CN107517347A

CN107517347A - A kind of asterism image pickup method and mobile terminal

Info

Publication number: CN107517347A
Application number: CN201710680245.7A
Authority: CN
Inventors: 旷伟
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-08-10
Filing date: 2017-08-10
Publication date: 2017-12-26
Anticipated expiration: 2037-08-10
Also published as: CN107517347B

Abstract

The present invention, which provides a kind of asterism image pickup method and mobile terminal, this method, to be included：Obtain a frame preview image of camera collection；Detect in the preview image with the presence or absence of highlighted spot light；If detecting there is highlighted spot light in present filming scene, obtain the highlighted point source image region in the preview image；Based on the highlighted point source image region, increase asterism line.So, by increasing asterism line based on highlighted point source image region, without extra increase asterism camera lens or eyeglass, the operation complexity of asterism effect shooting is reduced and using difficulty.

Description

A kind of asterism image pickup method and mobile terminal

Technical field

The present invention relates to communication technical field, more particularly to a kind of asterism image pickup method and mobile terminal.

Background technology

With developing rapidly for mobile terminal, mobile terminal has become a kind of instrument essential in people's life, And it is greatly convenient to be brought for the various aspects that user lives.

At present, in mobile terminal user during the high bright spot light source scenes such as shooting night scene starry sky, light, sunshine, When user needs to shoot asterism line projecting point light source scene effect, it is necessary to additionally increase asterism mirror, or combined using blade Formula adjustable aperture camera lens, asterism effect is shot by small aperture.It is big using difficulty for asterism mirror, while also can be thin to image quality Section has an impact.And for blade combined type adjustable aperture camera lens, because volume is larger, it is difficult at increasingly light and handy portable mobile end It is used widely in end.It follows that current asterism shooting solution add asterism shooting operation complexity and Use difficulty.

The content of the invention

The embodiment of the present invention provides a kind of asterism image pickup method and mobile terminal, to solve mobile terminal shooting asterism effect Method need special capture apparatus, add the operation complexity of asterism shooting and the problem of using difficulty.

In a first aspect, the embodiments of the invention provide a kind of asterism image pickup method, applied to the mobile end with camera End, including：

Obtain a frame preview image of the camera collection；

Detect in the preview image with the presence or absence of highlighted spot light；

If detecting there is highlighted spot light in present filming scene, obtain the highlighted spot light figure in the preview image As region；

Based on the highlighted point source image region, increase asterism line.

Second aspect, the embodiment of the present invention also provide a kind of mobile terminal, including camera, and the mobile terminal also wraps Include：

First acquisition module, for obtaining a frame preview image of the camera collection；

First detection module, for detecting in the preview image with the presence or absence of highlighted spot light；

Second acquisition module, if detecting that present filming scene has highlighted spot light for the first detection module, Then obtain the highlighted point source image region in the preview image；

Increase module, for based on the highlighted point source image region, increasing asterism line.

The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, including：Memory, processor and it is stored in institute The computer program that can be run on memory and on the processor is stated, when the computer program is by the computing device The step of realizing above-mentioned asterism image pickup method.

Fourth aspect, the embodiment of the present invention also provide a kind of computer-readable recording medium, the computer-readable storage Computer program is stored with medium, the computer program realizes the step of above-mentioned asterism image pickup method when being executed by processor Suddenly.

So, in the embodiment of the present invention, a frame preview image of camera collection is obtained；Detecting in the preview image is It is no highlighted spot light to be present；If detecting there is highlighted spot light in present filming scene, obtain the height in the preview image Bright spot light source image region；Based on the highlighted point source image region, increase asterism line.So, by based on high bright spot light Source image regions increase asterism line, without extra increase asterism camera lens or eyeglass, reduce the shooting of asterism effect Operation complexity and use difficulty.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed for being described below to the embodiment of the present invention The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, For those of ordinary skill in the art, without having to pay creative labor, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is one of flow chart of asterism image pickup method provided in an embodiment of the present invention；

Fig. 2 is the two of the flow chart of asterism image pickup method provided in an embodiment of the present invention；

Fig. 3 is the schematic diagram of asterism effect provided in an embodiment of the present invention；

Fig. 4 is one of structure chart of mobile terminal provided in an embodiment of the present invention；

Fig. 5 is the structure chart of the first detection module of mobile terminal provided in an embodiment of the present invention；

Fig. 6 is the structure chart of the second acquisition module of mobile terminal provided in an embodiment of the present invention；

Fig. 7 is the structure chart of the first determination sub-module of mobile terminal provided in an embodiment of the present invention；

Fig. 8 is one of structure chart of increase module of mobile terminal provided in an embodiment of the present invention；

Fig. 9 is one of structure chart of the 5th determination sub-module of mobile terminal provided in an embodiment of the present invention；

Figure 10 is the two of the structure chart of the 5th determination sub-module of mobile terminal provided in an embodiment of the present invention；

Figure 11 is the structure chart of the generation submodule of mobile terminal provided in an embodiment of the present invention；

Figure 12 is one of structure chart of setting unit of mobile terminal provided in an embodiment of the present invention；

Figure 13 is the two of the structure chart of the setting unit of mobile terminal provided in an embodiment of the present invention；

Figure 14 is the two of the increase function structure chart of mobile terminal provided in an embodiment of the present invention；

Figure 15 is the two of the structure chart of mobile terminal provided in an embodiment of the present invention；

Figure 16 is the three of the structure chart of mobile terminal provided in an embodiment of the present invention；

Figure 17 is the four of the structure chart of mobile terminal provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.

Referring to Fig. 1, Fig. 1 is the flow chart of asterism image pickup method provided in an embodiment of the present invention, as shown in figure 1, including with Lower step：

Step 101, the frame preview image for obtaining the camera collection.

In the embodiment of the present invention, above-mentioned camera can be the front camera or mobile terminal of mobile terminal Rear camera.It above-mentioned preview image, can be the preview image of personage, can be the preview image of animal, can build The preview image built, or can also be preview image of scenery with hills and waters etc..

With the presence or absence of highlighted spot light in step 102, the detection preview image.

In the embodiment of the present invention, with the presence or absence of highlighted spot light in above-mentioned detection preview image, the inspection of brightness can be passed through Survey to judge whether highlighted spot light.Such as region of the brightness more than a predetermined threshold value can be defined as high bright spot Light source, threshold value here can be 230,240,250 or a user-defined numerical value etc..

If step 103, detecting that present filming scene has highlighted spot light, obtain highlighted in the preview image Point source image region.

In the embodiment of the present invention, the highlighted point source image region in above-mentioned acquisition preview image, it will directly can highlight Spot light can justify the minimum envelop of highlighted spot light as highlighted point source image area as highlighted point source image region Domain, or can also be using the least surrounding boxes of highlighted spot light as highlighted point source image region etc..Need what is illustrated It is that if detecting, highlighted spot light is not present in present filming scene, can continue to detect, and can also terminate flow, and the present invention is real Fig. 1 in example is applied to be illustrated to terminate flow.

Step 104, based on the highlighted point source image region, increase asterism line.

It is above-mentioned based on highlighted point source image region in the embodiment of the present invention, increase asterism line, can be from high bright spot light The outside of source image regions, increase asterism line clockwise；Can be from the outside in highlighted point source image region, counterclockwise increase Asterism line；Or can also increase star successively to away from highlighted point source image region from close to highlighted point source image region Awns line etc..

In the embodiment of the present invention, above-mentioned mobile terminal can be mobile phone, tablet personal computer (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable device (Wearable Device) etc..

A kind of asterism image pickup method of the embodiment of the present invention, obtain a frame preview image of camera collection；Described in detection With the presence or absence of highlighted spot light in preview image；If detecting there is highlighted spot light in present filming scene, obtain described pre- Look at the highlighted point source image region in image；Based on the highlighted point source image region, increase asterism line.So, pass through Asterism line is increased based on highlighted point source image region, without extra increase asterism camera lens or eyeglass, reduces star The operation complexity and use difficulty that awns effect is shot.

Referring to Fig. 2, Fig. 2 is the flow chart of asterism image pickup method provided in an embodiment of the present invention.The present embodiment and last reality Applying the main distinction of example can show in this method for indicating the mark into asterism screening-mode, if detecting in mark Touch control operation, the opening and closing of asterism screening-mode can be controlled.As shown in Fig. 2 comprise the following steps：

Step 201, the frame preview image for obtaining the camera collection.

With the presence or absence of highlighted spot light in step 202, the detection preview image.

If step 203, detecting that present filming scene has highlighted spot light, obtain highlighted in the preview image Point source image region.

In the embodiment of the present invention, the highlighted point source image region in above-mentioned acquisition preview image, it will directly can highlight Spot light can justify the minimum envelop of highlighted spot light as highlighted point source image area as highlighted point source image region Domain, or can also be using the least surrounding boxes of highlighted spot light as highlighted point source image region etc..Need what is illustrated It is that if detecting, highlighted spot light is not present in present filming scene, can continue to detect, and can also terminate flow, and the present invention is real Fig. 2 in example is applied to be illustrated to terminate flow.

Step 204, based on the highlighted point source image region, increase asterism line.

Step 205, show for indicating the mark into asterism screening-mode.

In the embodiment of the present invention, above-mentioned mark can show the word of " asterism ", or can also be some icons Etc..Such as：One small five-pointed star, small triangle, small circular or some other shapes etc..Certainly, " star is shown The word of awns ", can there are different colors or different fonts etc., this embodiment of the present invention is not construed as limiting.With Family can control the opening and closing of asterism screening-mode, simple operation by operating this mark.

Touch control operation in step 206, the detection mark.

It the touch control operation in above-mentioned mark, can be the one click to mark in the embodiment of the present invention, can be to mark The once double-click known, or can also be once slip etc. to mark.Except of course that these touch control operations can also be one A little other touch control operations, are not construed as limiting to this embodiment of the present invention.

If step 207, detecting the touch control operation, according to the touch control operation, control asterism screening-mode is opened Open and close.

In the embodiment of the present invention, according to the touch control operation, the opening and closing of control asterism screening-mode can be so Understand.Such as：When clicking on the mark, if not starting asterism screening-mode, asterism screening-mode is switched on；If Start asterism screening-mode, be shut off asterism screening-mode.Certainly it or can also be that one click is carried out to the mark, just open Open asterism screening-mode；The mark is once double-clicked, is shut off asterism screening-mode etc..Except of course that these touch-controls are grasped Some other touch control operations is can also be, this embodiment of the present invention is not construed as limiting.So, can be by being touched to mark Control operation, is quickly turned on or off asterism screening-mode, mobile terminal can be made more intelligent, and the operation of user is also more It is convenient.

Certainly, in addition, the asterism screening-mode can be configured in the setting of mobile terminal, such as can be set Put automatic opening, enforced opening or closing etc..As long as automatic opening can be to have detected high bright light source, star is automatically turned on Awns screening-mode, when not detecting high bright light source, then it is not turned on asterism screening-mode；Enforced opening can be regardless of either with or without height Bright light source, it is switched on asterism screening-mode；Closing is then not turned on asterism screening-mode, and high bright light source is not dealt with, and can be with The screening-mode given tacit consent to using mobile terminal is shot.

Optionally, the step of in the detection preview image with the presence or absence of highlighted spot light, including：Determine described pre- The number for the high luminance pixels look in image；Obtain the arrangement information of all high luminance pixels；Based on the arrangement information, by highlighted picture The largest number of a line of element are defined as target line；Based on the arrangement information, the largest number of row of high luminance pixels are defined as Target column；Obtain the length of the target line and the length of the target column, and using length it is longer as the first length, length The shorter length of conduct second；Judge whether twice of second length is more than or equal to first length；It is if described Twice of second length is more than or equal to first length, it is determined that highlighted spot light in the preview image be present；Institute The step of obtaining the highlighted point source image region in the preview image is stated, including：It is described using second length as diameter The midpoint of row or column corresponding to second length is that a circle is made in the center of circle；The round area defined is defined as described highlighted Point source image region.

In present embodiment, the number of the high luminance pixels in the above-mentioned determination preview image, the bright of pixel can be passed through Degree is determined.The brightness value of each pixel can be read first, then judged that the brightness of each pixel is whether to be more than and preset Threshold value, the pixel that brightness value is more than to predetermined threshold value are defined as high luminance pixels.Predetermined threshold value here can be 230, 240th, 250 or a user-defined threshold value.It is determined that after high luminance pixels, the number of high luminance pixels is counted, so that it may To determine the number of the high luminance pixels in the preview image.The arrangement information of above-mentioned all high luminance pixels of acquisition, can be line by line The information of each high luminance pixels is read, so that it is determined that the arrangement information of all high luminance pixels；Or it can also read by column each The information of high luminance pixels, so that it is determined that the arrangement information of all high luminance pixels.Based on the arrangement information, by high luminance pixels number Most a line are defined as target line.Such as：It can be obtained from arrangement information, high luminance pixels one share three rows, the height of the first row The number of bright pixel is 400, and the number of the high luminance pixels of the second row is 600, and the number of the high luminance pixels of the third line is 500 It is individual, then the second row is just defined as target line.Similarly, make in this way we can also determine target column.Above-mentioned acquisition It the length of the target line, can be the number for the pixel that mobile terminal first obtains target line, be then multiplied by using the number pre- If the length of each pixel obtain the length of target line；Or can also be for the pixel that mobile terminal first obtains target line Number, then in default corresponding relation, search length corresponding with the number etc..Similarly, make in this way we The length of target column can be determined.After the length and the length of target column for obtaining target line, it can compare between them Size, so as to using length it is longer as the first length, the shorter length of conduct second of length.If second length It is more than or equal to first length twice, it is determined that highlighted spot light in the preview image be present.Because the second length The first length can be less than, and twice of the second length can be more than or equal to the first length, the shape of so highlighted spot light In certain error can approximation regard an ellipse as, it is thus approximate to meet circular spot light, such as the moon or street lamp Etc., judge highlighted spot light be present so as to approximation.

In present embodiment, using second length as diameter, the midpoint of row or column is corresponding to second length A circle is made in the center of circle, and the round area defined is defined as into the highlighted point source image region, can so make the circle Area defined includes more high luminance pixels as far as possible.Because if using first length as diameter, described first The midpoint of row or column corresponding to length is that a circle is made in the center of circle, may so include relatively more non-high luminance pixels, cause really Fixed highlighted point source image region is comparatively less accurate.By using second length as diameter, second length The midpoint of corresponding row or column is that a circle is made in the center of circle, and the region that the circle surrounds is defined as into highlighted point source image region, It is more accurate that highlighted spot light determines, is also advantageous to directly to this circle addition asterism line, so as to form preferable asterism effect.

Optionally, the step of number of the high luminance pixels in the determination preview image, including：Obtain the preview The brightness value of each pixel in image；The number that brightness value is more than the pixel of predetermined threshold value is counted, obtains the highlighted picture The number of element.

In present embodiment, the brightness value of above-mentioned each pixel can directly read acquisition by mobile terminal.It is above-mentioned Predetermined threshold value can be 230,240,250 or any customized numerical value of user, and this present embodiment is not construed as limiting. So, by counting number of the brightness value more than the pixel of predetermined threshold value, the high luminance pixels of user's request can be met Number.

Optionally, it is described to be based on the highlighted point source image region, the step of increasing asterism line, including：Determine asterism The asterism parameter of line；Based on the asterism parameter, asterism line is generated；Based on the highlighted point source image region, increase asterism Line；Wherein, the asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, institute State the shape that isosceles triangle is the asterism line.

In present embodiment, the asterism parameter of asterism line is determined, can be the parameter that user is configured, or can also It is that mobile terminal default configuration there are some parameters, directly transfers these parameters etc..Asterism parameter includes of isosceles triangle At least one of in several, base length and high length, certainly, user can set a certain item parameter therein, so as to it His parameter is called the parameter of acquiescence by mobile terminal；Or can also be that user all sets these parameters, so that it is determined that Asterism parameter.When asterism parameter setting, it is possible to according to asterism line corresponding to the generation of asterism parameter.Based on the highlighted spot light Image-region, increase asterism line, the pin that can take advantage of a situation addition, or can also be added counterclockwise etc..In order to preferably manage The effect of asterism is solved, we can refer to Fig. 3.It will be seen that there is a light source in image A in Fig. 3, the light source does not increase Add asterism effect；There is a light source in image B, the light source adds asterism effect.It can easily be seen that add asterism effect for light source The image B of fruit effect seems more life-like than image A.

In present embodiment, by determining that asterism parameter so as to generate asterism line, can make asterism line more conform to user Personalized shape, user can also be adjusted to the asterism parameter of asterism line at any time, asterism effect is more conformed to user Demand.

Optionally, the step of asterism parameter of the determination asterism line, including：Obtain default isosceles triangle number N； Obtain the girth of the circle；The girth is divided equally into N sections；Each section of both ends after division are connected into shape with straight line Into line segment；Each line segment is defined as to the base of each self-corresponding isosceles triangle, and the length of each line segment is defined as respectively The length on the base of self-corresponding isosceles triangle；Obtain the high length of default isosceles triangle；Wherein, N is more than 1 Positive integer.

The number N of above-mentioned default isosceles triangle, can be the numerical value that user is set in present embodiment, or Person can also be a numerical value of mobile terminal default setting, directly read the numerical value and be obtained with isosceles triangle number N. The girth of the above-mentioned acquisition circle, due to circle it has been determined that the number of the pixel on the round week can be counted directly, so that The length that each pixel is multiplied by with the number obtains the girth of the circle；Or of the pixel on the radius of circle can also be counted Number, the length of each pixel is multiplied by thereby using the number can obtain the length of the radius of circle, reuse circumference calculating formula The girth of the circle is calculated in can.Above-mentioned that the girth is divided equally into N-terminal, the mode of division can have a variety of.Example The circle is such as divided into 4 sections, can be in the starting point of the surface of circumference, as first point.So as to circumferentially suitable by first point The position that hour hands are rotated by 90 °, as second point.Again can be by second point, the position that circumferentially dextrorotation is turn 90 degrees, make For thirdly.Again can will thirdly, the position that circumferentially dextrorotation is turn 90 degrees, as the 4th point.So girth just by Four sections have been divided into it, first point of part-circular periphery between second point, second point are with part-circular periphery thirdly, thirdly with the 4 points of part-circular periphery and the 4th point of part-circular periphery with first point.Certainly, except circumference can also be divided into other by 4 sections Several sections of quantity, are not construed as limiting to this present embodiment.Above-mentioned each section of the both ends by after division are connected to be formed with straight line Line segment, you can so that first point to be connected with second point, second point with being thirdly connected, thirdly with four point attachment and the 4th Point is connected to form the line segment with first point.After line segment determination, it is possible to which each line segment is defined as into each self-corresponding isosceles The base of triangle, the length of each line segment is defined as to the length on the base of each self-corresponding isosceles triangle.Certainly, here The length of each line segment can be by determining the numbers of the high luminance pixels on line segment, and the length for being multiplied by each high luminance pixels obtains； Or round positive inscribed polygon can also be obtained by calculation formula etc. it is determined that after the girth of circle.It is above-mentioned default Isosceles triangle high length, can be the numerical value that user is set, or can also be mobile terminal default setting A numerical value, directly read the high length that the numerical value is obtained with isosceles triangle.By the way that each line segment is defined as The base of each self-corresponding isosceles triangle, and the length of each line segment is defined as to the base of each self-corresponding isosceles triangle Length, then can obtain the high length of isosceles triangle, it is determined that the base of isosceles triangle and height, so as to isosceles three Angular shape is just determined, is also determined so as to the shape of asterism line.So, isoceles triangle is limited by some parameters The shape of shape, so that it is determined that the shape of asterism line, so can make asterism line more conform to users ' individualized requirement.

Optionally, the step of asterism parameter of the determination asterism line, including：Obtain the base of default isosceles triangle Length；Obtain default isosceles triangle number N；Obtain the f-number of the camera of the mobile terminal；Based on the light Circle value, determine the high length of the isosceles triangle；Wherein, the high length of the f-number and the isosceles triangle into Inverse ratio, N are the positive integer more than 1.

The length on the base of the above-mentioned default isosceles triangle of acquisition, can be the one of user's setting in present embodiment Individual numerical value, or can also be a numerical value of mobile terminal default setting, directly read the numerical value and be obtained with isosceles three The length on the base at angle.The above-mentioned default isosceles triangle number N of acquisition, can be user set a numerical value, Huo Zheye It can be a numerical value of mobile terminal default setting, directly read the numerical value and be obtained with isosceles triangle number N.It is above-mentioned The f-number of the camera of the mobile terminal is obtained, because f-number can be the numerical value that user is set, or can also be One numerical value of mobile terminal default setting, directly reads the f-number that the numerical value is obtained with camera.It is above-mentioned to be based on institute F-number is stated, determines that the high length of the isosceles triangle is understood that.Due to f-number and the height of isosceles triangle Length be inversely proportional, proportionality coefficient here can be a coefficient of acquiescence, or can also be the ratio that user is set Example coefficient.For example, when proportionality coefficient is 20, if f-number is 2, the high length of isosceles triangle can be thought 10；If f-number is 4, the high length of isosceles triangle can think 5 etc..Certainly, proportionality coefficient here can be The suitable coefficient that any user is set, is not construed as limiting to this present embodiment.Said aperture value, it can be understood as Jiao of camera lens Away from divided by the relative value that draws of camera lens thang-kng diameter.F-number is bigger, and aperture is smaller；Conversely, f-number is smaller, aperture is bigger. Because the high length of the f-number and the isosceles triangle is inversely proportional, so it is determined that after f-number, it is possible to To the high length of isosceles triangle.So, the high length of isosceles triangle directly can be determined by f-number, from It is configured without user, it is convenient to have provided the user.And the shape of asterism line can be limited by other specification It is fixed, asterism line can be made to more conform to the individual demand of user.

Optionally, it is described to be based on the asterism parameter, the step of generating asterism line, including：It is raw based on the asterism parameter Into asterism line；The brightness of each pixel in the asterism line is set.

Above-mentioned to be based on the asterism parameter in present embodiment, generation asterism line is understood that.The asterism of asterism line It parameter, can be the parameter that user is configured, or can also be that mobile terminal default configuration has some parameters, directly transfer These parameters etc..Asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, when So, user can set a certain item parameter therein, so as to which other parameters call the parameter given tacit consent to by mobile terminal；Or Can be that user all sets these parameters, so that it is determined that asterism parameter.When asterism parameter setting, it is possible to join according to asterism Asterism line corresponding to number generation.The brightness of each pixel, can set one by one to each asterism line in the above-mentioned setting asterism line Brightness is put, or brightness etc. can also be set to multiple asterism lines together.Certainly, the brightness set here for each pixel can , can also be different with identical.Such as the brightness between pixel has some difference, or successively decreased according to certain regular brightness or Person progressively increases etc..So, by the limitation of asterism parameter and each pixel intensity, asterism line can be made to more conform to of user Property demand.

Optionally, the described the step of brightness of each pixel in the asterism line is set, including：By in the asterism line The brightness of the pixel of one number is arranged to the brightness in the center of circle；According to the rate of change of brightness to successively decrease, reduce the asterism respectively The brightness of the pixel of second number in line；Wherein, the pixel of first number is in preset range apart from the center of circle of the circle Interior all pixels；The pixel of second number is all pictures in the preset range apart from the center of circle of the circle Element；The brightness of each pixel and the distance and the pixel in the center of circle of the circle in the pixel of second number is inversely proportional.

The above-mentioned rate of change of brightness to successively decrease, can be that brightness declines 1 every 1 millimeter in present embodiment；Or also may be used To be every 1 millimeter, brightness declines 10 etc..Certainly, the rate of change of brightness to successively decrease here, can be the number that user is arbitrarily set Value, is not construed as limiting to this present embodiment.Above-mentioned preset range, can be that 2 millimeters, 3 millimeters, 4 millimeters or any user set Numerical value put etc..So, pixel is divided into the pixel of first number and the pixel of second number by preset range, The pixel of one number is the pixel closer from the center of circle, can then be set the brightness of the pixel of first number relatively It is high；The pixel of second number is the pixel distant from the center of circle, the phase that can then set the brightness of the pixel of second number To lower slightly.And the brightness of each pixel in the pixel of second number and the distance and the pixel in the center of circle of the circle is into anti- Than so making the asterism line to be formed relatively have a sense of hierarchy, being more conform with real asterism effect, can be that user has and preferably regarded Feel impression.

Optionally, the described the step of brightness of each pixel in the asterism line is set, including it is at least one of following：Pass through Exposure compensating is adjusted, the brightness of each pixel in the asterism line is set；Synthesized, set each in the asterism line by multiframe The brightness of pixel；By replicating the pixel in highlighted point source image region, the brightness of each pixel in the asterism line is set.

In present embodiment, above-mentioned exposure compensating is a kind of spectrum assignment mode, if environment light source is partially dark, you can increase Exposure value is to highlight the definition of picture.Exposure compensating is exactly " suitable " the exposure ginseng that change camera auto computing goes out consciously Number, makes photo brighter or more dim shooting gimmick.Photographer can adjust the light and shade journey of photo according to the idea of oneself Degree, create visual effect of uniqueness etc..In general phase chance changes f-number or shutter speed to be exposed value Regulation.Above-mentioned multiframe synthesis is appreciated that simply to be superimposed using multiple image or synthesized so as to adjust using certain algorithm Save the brightness of each pixel.Above by the pixel for replicating highlighted point source image region, each picture in the asterism line is set The brightness of element, it can be understood as directly by the brightness of the pixel of highlighted spot light, the brightness of each pixel in asterism line is arranged to, It can so make the brightness ratio of pixel in asterism line higher.It is of course also possible to comprehensive certain several regulative mode therein enter together Row regulation etc., is not construed as limiting to this present embodiment.So, can be set by different modes each in the asterism line The brightness of pixel, make the mode of the setting of the brightness of each pixel in asterism line more diversified, can meet that user is different Demand.

Optionally, it is described to be based on the highlighted point source image region, the step of increasing asterism line, including：Based on described Highlighted point source image region, determine the maximum inscribed circle in the highlighted point source image region；Determine the maximum inscribed circle Circumference；The direction away from the center of circle increases asterism line successively on the circumference.

In present embodiment, by determining the maximum inscribed circle in highlighted point source image region, maximum inscribed circle can be made As far as possible comprising relatively more high luminance pixels, and highlighted point source image region can be made full use of.After determining inscribed circle, Can is readily available the circumference of maximum inscribed circle, and the direction so as to the remote center of circle on the circumference increases star successively Awns line.Here it can be addition clockwise or addition etc. counterclockwise, this present embodiment is not construed as limiting.So, By determining the maximum inscribed circle in highlighted point source image region, highlighted point source image region was both made full use of, can also have been made Maximum inscribed circle comprising relatively more high luminance pixels, makes the determination in the region more reasonable as far as possible.

A kind of asterism image pickup method of the embodiment of the present invention, obtain a frame preview image of the camera collection；Detection With the presence or absence of highlighted spot light in the preview image；If detecting there is highlighted spot light in present filming scene, obtain institute State the highlighted point source image region in preview image；Based on the highlighted point source image region, increase asterism line；Display is used Mark in instruction into asterism screening-mode；Detect the touch control operation in the mark；If detecting the touch control operation, According to the touch control operation, the opening and closing of asterism screening-mode are controlled.So, by based on highlighted point source image region Increase asterism line, without extra increase asterism camera lens or eyeglass, reduce the operation complexity that asterism effect is shot The opening and closing of asterism screening-mode, simple operation can be controlled by operating this mark with using difficulty, user.

Referring to Fig. 4, Fig. 4 is the structure chart of mobile terminal provided in an embodiment of the present invention, and the mobile terminal includes shooting Head, can realize the details of asterism image pickup method in above-described embodiment, and reach identical effect.As shown in figure 4, mobile terminal 400 include the first acquisition module 401, first detection module 402, the second acquisition module 403 and increase module 404, and first obtains Module 401 and first detection module 402 connect, and the acquisition module 403 of first detection module 402 and second connects, and second obtains mould Block 403 and increase module 404 connect, wherein：

First acquisition module 401, for obtaining a frame preview image of the camera collection；

First detection module 402, for detecting in the preview image with the presence or absence of highlighted spot light；

Second acquisition module 403, if detecting that present filming scene has high bright spot light for the first detection module Source, then obtain the highlighted point source image region in the preview image；

Increase module 404, for based on the highlighted point source image region, increasing asterism line.

Optionally, as shown in figure 5, the first detection module 402, including：

4021 first determination sub-modules, for determining the number of the high luminance pixels in the preview image；

4022 first acquisition submodules, for obtaining the arrangement information of all high luminance pixels；

4023 second determination sub-modules, for based on the arrangement information, the largest number of a line of high luminance pixels to be determined For target line；

4024 the 3rd determination sub-modules, user are based on the arrangement information, and the largest number of row of high luminance pixels are determined For target column；

4025 second acquisition submodules, for obtaining the length of the target line and the length of the target column, and will be long The longer length of conduct first of degree, the shorter length of conduct second of length；

4026 judging submodules, for judging whether twice of second length be more than or equal to the described first length Degree；

4027 the 4th determination sub-modules, if twice that judges second length for the judging submodule 4026 is more than Or equal to first length, it is determined that highlighted spot light in the preview image be present；

As shown in fig. 6, second acquisition module 403, including：

Make submodule 4031, for using second length as diameter, row or column corresponding to second length Midpoint is that a circle is made in the center of circle；

Determination sub-module 4032, for the round area defined to be defined as into the highlighted point source image region.

Optionally, as shown in fig. 7, first determination sub-module 4021, including：

First acquisition unit 40211, for obtaining the brightness value of each pixel in the preview image；

Statistic unit 40212, for counting number of the brightness value more than the pixel of predetermined threshold value, obtain the highlighted picture The number of element.

Optionally, as shown in figure 8, it is described increase module 404, including：

5th determination sub-module 4041, for determining the asterism parameter of asterism line；

Submodule 4042 is generated, for based on the asterism parameter, generating asterism line；

First increase submodule 4043, for based on the highlighted point source image region, increasing asterism line；

Wherein, the asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle , the isosceles triangle is the shape of the asterism line.

Optionally, as shown in figure 9, the 5th determination sub-module 4041, including：

Second acquisition unit 40411, for obtaining default isosceles triangle number N；

3rd acquiring unit 40412, for obtaining the girth of the circle；

Division unit 40413, for the girth to be divided equally into N sections；

Connection unit 40414, for connecting to form line segment with straight line by each section of both ends after division；

First determining unit 40415, for each line segment to be defined as to the base of each self-corresponding isosceles triangle, and will The length of each line segment is defined as the length on the base of each self-corresponding isosceles triangle；

4th acquiring unit 40416, for obtaining the high length of default isosceles triangle；

Wherein, N is the positive integer more than 1.

Optionally, as shown in Figure 10, the 5th determination sub-module 4041, including：

5th acquiring unit 40417, the length on the base for obtaining default isosceles triangle；

6th acquiring unit 40418, for obtaining default isosceles triangle number N；

7th acquiring unit 40419, the f-number of the camera for obtaining the mobile terminal；

Second determining unit 404110, for based on the f-number, determining the high length of the isosceles triangle；

Wherein, the high length of the f-number and the isosceles triangle is inversely proportional, and N is the positive integer more than 1.

Optionally, as shown in figure 11, the generation submodule 4042, including：

Generation unit 40421, for based on the asterism parameter, generating asterism line；

Setting unit 40422, for setting the brightness of each pixel in the asterism line.

Optionally, as shown in figure 12, the setting unit 40422, including：

First sets subelement 404221, for the brightness of the pixel of first number in the asterism line to be arranged into described The brightness in the center of circle；

Reduce subelement 404222, for according to the rate of change of brightness to successively decrease, reducing in the asterism line second respectively The brightness of several pixels；

Wherein, the pixel of first number is all pixels apart from the center of circle of the circle within a preset range；It is described The pixel of second number is all pixels in the preset range apart from the center of circle of the circle；The picture of second number The brightness of each pixel and the distance and the pixel in the center of circle of the circle in element is inversely proportional.

Optionally, as shown in figure 13, the setting unit 40422, including it is at least one of following：

Second sets subelement 404223, for by adjusting exposure compensating, setting each pixel in the asterism line Brightness；

3rd sets subelement 404224, for being synthesized by multiframe, sets the brightness of each pixel in the asterism line；

4th sets subelement 404225, for the pixel by replicating highlighted point source image region, sets the star The brightness of each pixel in awns line.

Optionally, as shown in figure 14, the increase module 404, including：

6th determination sub-module 4044, for based on the highlighted point source image region, determining the highlighted spot light The maximum inscribed circle of image-region；

7th determination sub-module 4045, for determining the circumference of the maximum inscribed circle；

Second increase submodule 4046, the direction for the remote center of circle on the circumference increase asterism line successively.

Optionally, as shown in figure 15, the mobile terminal 400 also includes：

Display module 405, it is used to indicate the mark into asterism screening-mode for showing；

Second detection module 406, for detecting the touch control operation in the mark；

Control module 407, if detecting the touch control operation for second detection module 406, touched according to described Control operation, controls the opening and closing of asterism screening-mode.

Mobile terminal 400 can realize each process that mobile terminal is realized in Fig. 1 to Fig. 2 embodiment of the method, to avoid Repeat, repeat no more here.

The mobile terminal 400 of the embodiment of the present invention, obtain a frame preview image of camera collection；Detect the preview graph With the presence or absence of highlighted spot light as in；If detecting there is highlighted spot light in present filming scene, obtain the preview image In highlighted point source image region；Based on the highlighted point source image region, increase asterism line.So, by based on height Bright spot light source image region increases asterism line, without extra increase asterism camera lens or eyeglass, reduces asterism effect The operation complexity of shooting and use difficulty.

Referring to Figure 16, Figure 16 is the structure chart of mobile terminal provided in an embodiment of the present invention, can be realized in above-described embodiment The details of image pickup method, and reach identical effect.As shown in figure 16, mobile terminal 1600 includes：At least one processor 1601st, memory 1602, at least one network interface 1604, user interface 1603 and camera 1606.In mobile terminal 1600 Each component be coupled by bus system 1605.It is understood that bus system 1605 is used to realize between these components Connection communication.Bus system 1605 is in addition to including data/address bus, in addition to power bus, controlling bus and status signal are total Line.But for the sake of clear explanation, various buses are all designated as bus system 1605 in figure 16.

Wherein, user interface 1603 can include display, keyboard or pointing device (for example, mouse, trace ball (track ball), touch-sensitive plate or touch-screen etc..

It is appreciated that the memory 1602 in the embodiment of the present invention can be volatile memory or non-volatile memories Device, or may include both volatibility and nonvolatile memory.Wherein, nonvolatile memory can be read-only storage (Read-Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), erasable programmable are only Read memory (Erasable P ROM, EPROM), Electrically Erasable Read Only Memory (Electrically EP ROM, ) or flash memory EEPROM.Volatile memory can be random access memory (Random Access Memory, RAM), and it is used Make External Cache.By exemplary but be not restricted explanation, the RAM of many forms can use, such as static random-access Memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random-access Memory (Synchronous D RAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate SD RAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SD RAM, ESDRAM), synchronized links dynamic random access memory (Synch link D RAM, SLDRAM) and direct rambus are random Access memory (Direct Rambus RAM, DRRAM).The memory 1602 of system and method described herein is intended to include But it is not limited to the memory of these and any other suitable type.

In some embodiments, memory 1602 stores following element, can perform module or data structure, or Their subset of person, or their superset：Operating system 16021 and application program 16022.

Wherein, operating system 16021, comprising various system programs, such as ccf layer, core library layer, driving layer etc., it is used for Realize various basic businesses and the hardware based task of processing.Application program 16022, include various application programs, such as matchmaker Body player (Media Player), browser (Browser) etc., for realizing various applied business.Realize that the present invention is implemented The program of example method may be embodied in application program 16022.

In embodiments of the present invention, mobile terminal 1600 also includes：It is stored on memory 1602 and can be in processor The computer program run on 1601, computer program realize following steps when being performed by processor 1601：Camera is obtained to adopt One frame preview image of collection；Detect in the preview image with the presence or absence of highlighted spot light；If detecting, present filming scene is deposited In highlighted spot light, then the highlighted point source image region in the preview image is obtained；Based on the highlighted point source image Region, increase asterism line.

The method that the embodiments of the present invention disclose can apply in processor 1601, or real by processor 1601 It is existing.Processor 1601 is probably a kind of IC chip, has the disposal ability of signal.In implementation process, the above method Each step can be completed by the instruction of the integrated logic circuit of the hardware in processor 1601 or software form.Above-mentioned Processor 1601 can be general processor, digital signal processor (Digital Signal Processor, DSP), special Integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA) either other PLDs, discrete gate or transistor logic, Discrete hardware components.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general Processor can be microprocessor or the processor can also be any conventional processor etc..With reference to institute of the embodiment of the present invention The step of disclosed method, can be embodied directly in hardware decoding processor and perform completion, or with the hardware in decoding processor And software module combination performs completion.Software module can be located at random access memory, flash memory, read-only storage, may be programmed read-only In the ripe storage medium in this area such as memory or electrically erasable programmable memory, register.The storage medium is located at Memory 1602, processor 1601 read the information in memory 1602, with reference to the step of its hardware completion above method.

It is understood that embodiments described herein can use hardware, software, firmware, middleware, microcode or its Combine to realize.Realized for hardware, processing unit can be realized in one or more application specific integrated circuit (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor, In controller, microcontroller, microprocessor, other electronic units for performing herein described function or its combination.

Realize, can be realized herein by performing the module (such as process, function etc.) of function described herein for software Described technology.Software code is storable in memory and passes through computing device.Memory can within a processor or Realized outside processor.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Determine the preview image In high luminance pixels number；Obtain the arrangement information of all high luminance pixels；Based on the arrangement information, by high luminance pixels number Most a line are defined as target line；Based on the arrangement information, the largest number of row of high luminance pixels are defined as target column； Obtain the length of the target line and the length of the target column, and using longer shorter as the first length, length of length As the second length；Judge whether twice of second length is more than or equal to first length；If second length Twice of degree is more than or equal to first length, it is determined that highlighted spot light in the preview image be present；With described Two length are diameter, and the midpoint of row or column corresponding to second length is that a circle is made in the center of circle；The circle is surrounded Region is defined as the highlighted point source image region.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Obtain the preview image In each pixel brightness value；The number that brightness value is more than the pixel of predetermined threshold value is counted, obtains the high luminance pixels Number.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Determine the asterism of asterism line Parameter；Based on the asterism parameter, asterism line is generated；Based on the highlighted point source image region, increase asterism line；Wherein, The asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, the isosceles three The angular shape for the asterism line.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Obtain default isosceles three Angular number N；Obtain the girth of the circle；The girth is divided equally into N sections；Each section of both ends after division are used Straight line connects to form line segment；Each line segment is defined as to the base of each self-corresponding isosceles triangle, and by the length of each line segment Degree is defined as the length on the base of each self-corresponding isosceles triangle；Obtain the high length of default isosceles triangle；Wherein, N is the positive integer more than 1.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Obtain default isosceles three The length on angular base；Obtain default isosceles triangle number N；Obtain the f-number of the camera of the mobile terminal； Based on the f-number, the high length of the isosceles triangle is determined；Wherein, the f-number and the isosceles triangle High length is inversely proportional, and N is the positive integer more than 1.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Based on the asterism parameter, Generate asterism line；The brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed by processor 1601：By in the asterism line The brightness of the pixel of one number is arranged to the brightness in the center of circle；According to the rate of change of brightness to successively decrease, reduce the asterism respectively The brightness of the pixel of second number in line；Wherein, the pixel of first number is in preset range apart from the center of circle of the circle Interior all pixels；The pixel of second number is all pictures in the preset range apart from the center of circle of the circle Element；The brightness of each pixel and the distance and the pixel in the center of circle of the circle in the pixel of second number is inversely proportional.

Optionally, following steps can be also realized when computer program is performed by processor 1601：By adjusting exposure compensating, The brightness of each pixel in the asterism line is set；Synthesized by multiframe, the brightness of each pixel in the asterism line is set；It is logical The pixel for replicating highlighted point source image region is crossed, the brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Based on the high bright spot light Source image regions, determine the maximum inscribed circle in the highlighted point source image region；Determine the circumference of the maximum inscribed circle； The direction away from the center of circle increases asterism line successively on the circumference.

Optionally, following steps can be also realized when computer program is performed by processor 1601：Show for indicating to enter The mark of asterism screening-mode；Detect the touch control operation in the mark；If detecting the touch control operation, touched according to described Control operation, controls the opening and closing of asterism screening-mode.

Mobile terminal 1600 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, this In repeat no more.

The mobile terminal 1600 of the embodiment of the present invention, obtain a frame preview image of camera collection；Detect the preview With the presence or absence of highlighted spot light in image；If detecting there is highlighted spot light in present filming scene, obtain the preview graph Highlighted point source image region as in；Based on the highlighted point source image region, increase asterism line.So, by based on Highlighted point source image region increase asterism line, without extra increase asterism camera lens or eyeglass, reduce asterism effect The operation complexity and use difficulty that fruit shoots.

Referring to Figure 17, Figure 17 is the structure chart for the mobile terminal that the present invention implements offer, and the mobile terminal can be realized The details of image pickup method is stated, and reaches identical effect.As shown in figure 17, mobile terminal 1700 includes radio frequency (Radio Frequency, RF) circuit 1710, memory 1720, input block 1730, display unit 1740, processor 1750, audio-frequency electric Road 1760, communication module 1770, power supply 1780 and camera 1790.

Wherein, input block 1730 is available for the numeral or character information for receiving user's input, and generation and movement are eventually The signal input that the user at end 1700 is set and function control is relevant.Specifically, in the embodiment of the present invention, the input block 1730 can include contact panel 1731.Contact panel 1731, also referred to as touch-screen, collect user's touching on or near it Operation (for example user uses the operations of any suitable object or annex on contact panel 1731 such as finger, stylus) is touched, and Corresponding attachment means are driven according to formula set in advance.Optionally, contact panel 1731 may include touch detecting apparatus and Two parts of touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect the letter that touch operation is brought Number, transmit a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into Contact coordinate, then give the processor 1750, and the order sent of reception processing device 1750 and can be performed.Furthermore, it is possible to Contact panel 1731 is realized using polytypes such as resistance-type, condenser type, infrared ray and surface acoustic waves.Except contact panel 1731, input block 1730 can also include other input equipments 1732, and other input equipments 1732 can include but is not limited to One kind or more in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc. Kind.

Wherein, display unit 1740 can be used for display by the information of user's input or be supplied to information and the movement of user The various menu interfaces of terminal 1700.Display unit 1740 may include display panel 1741, optionally, can use LCD or have The forms such as machine light emitting diode (Organic Light-Emitting Diode, OLED) configure display panel 1741.

It should be noted that contact panel 1731 can cover display panel 1741, touch display screen is formed, when the touch display screen After detecting the touch operation on or near it, processor 1750 is sent to determine the type of touch event, is followed by subsequent processing Device 1750 provides corresponding visual output according to the type of touch event in touch display screen.

Touch display screen includes Application Program Interface viewing area and conventional control viewing area.The Application Program Interface viewing area And arrangement mode of the conventional control viewing area does not limit, can be arranged above and below, left-right situs etc. can distinguish two it is aobvious Show the arrangement mode in area.The Application Program Interface viewing area is displayed for the interface of application program.Each interface can be with The interface element such as the icon comprising at least one application program and/or widget desktop controls.The Application Program Interface viewing area It can also be the empty interface not comprising any content.The conventional control viewing area is used to show the higher control of utilization rate, for example, Application icons such as settings button, interface numbering, scroll bar, phone directory icon etc..

Wherein processor 1750 is the control centre of mobile terminal 1700, utilizes various interfaces and connection whole mobile phone Various pieces, by running or performing the software program and/or module that are stored in first memory 1721, and call and deposit The data in second memory 1722 are stored up, perform the various functions and processing data of mobile terminal 1700, so as to mobile whole End 1700 carries out integral monitoring.Optionally, processor 1750 may include one or more processing units.

In embodiments of the present invention, by call store the first memory 1721 in software program and/or module and/ Or the data in the second memory 1722, following steps can be realized when computer program is performed by processor 1750：Acquisition is taken the photograph The frame preview image gathered as head；Detect in the preview image with the presence or absence of highlighted spot light；If detect current shooting There is highlighted spot light in scene, then obtain the highlighted point source image region in the preview image；Based on the high bright spot light Source image regions, increase asterism line.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Determine the preview image In high luminance pixels number；Obtain the arrangement information of all high luminance pixels；Based on the arrangement information, by high luminance pixels number Most a line are defined as target line；Based on the arrangement information, the largest number of row of high luminance pixels are defined as target column； Obtain the length of the target line and the length of the target column, and using longer shorter as the first length, length of length As the second length；Judge whether twice of second length is more than or equal to first length；If second length Twice of degree is more than or equal to first length, it is determined that highlighted spot light in the preview image be present；With described Two length are diameter, and the midpoint of row or column corresponding to second length is that a circle is made in the center of circle；The circle is surrounded Region is defined as the highlighted point source image region.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Obtain the preview image In each pixel brightness value；The number that brightness value is more than the pixel of predetermined threshold value is counted, obtains the high luminance pixels Number.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Determine the asterism of asterism line Parameter；Based on the asterism parameter, asterism line is generated；Based on the highlighted point source image region, increase asterism line；Wherein, The asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, the isosceles three The angular shape for the asterism line.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Obtain default isosceles three Angular number N；Obtain the girth of the circle；The girth is divided equally into N sections；Each section of both ends after division are used Straight line connects to form line segment；Each line segment is defined as to the base of each self-corresponding isosceles triangle, and by the length of each line segment Degree is defined as the length on the base of each self-corresponding isosceles triangle；Obtain the high length of default isosceles triangle；Wherein, N is the positive integer more than 1.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Obtain default isosceles three The length on angular base；Obtain default isosceles triangle number N；Obtain the f-number of the camera of the mobile terminal； Based on the f-number, the high length of the isosceles triangle is determined；Wherein, the f-number and the isosceles triangle High length is inversely proportional, and N is the positive integer more than 1.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Based on the asterism parameter, Generate asterism line；The brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed by processor 1750：By in the asterism line The brightness of the pixel of one number is arranged to the brightness in the center of circle；According to the rate of change of brightness to successively decrease, reduce the asterism respectively The brightness of the pixel of second number in line；Wherein, the pixel of first number is in preset range apart from the center of circle of the circle Interior all pixels；The pixel of second number is all pictures in the preset range apart from the center of circle of the circle Element；The brightness of each pixel and the distance and the pixel in the center of circle of the circle in the pixel of second number is inversely proportional.

Optionally, following steps can be also realized when computer program is performed by processor 1750：By adjusting exposure compensating, The brightness of each pixel in the asterism line is set；Synthesized by multiframe, the brightness of each pixel in the asterism line is set；It is logical The pixel for replicating highlighted point source image region is crossed, the brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Based on the high bright spot light Source image regions, determine the maximum inscribed circle in the highlighted point source image region；Determine the circumference of the maximum inscribed circle； The direction away from the center of circle increases asterism line successively on the circumference.

Optionally, following steps can be also realized when computer program is performed by processor 1750：Show for indicating to enter The mark of asterism screening-mode；Detect the touch control operation in the mark；If detecting the touch control operation, touched according to described Control operation, controls the opening and closing of asterism screening-mode.

Mobile terminal 1700 can realize each process that mobile terminal is realized in previous embodiment, to avoid repeating, this In repeat no more.

The mobile terminal 1700 of the embodiment of the present invention, obtain a frame preview image of camera collection；Detect the preview With the presence or absence of highlighted spot light in image；If detecting there is highlighted spot light in present filming scene, obtain the preview graph Highlighted point source image region as in；Based on the highlighted point source image region, increase asterism line.So, by based on Highlighted point source image region increase asterism line, without extra increase asterism camera lens or eyeglass, reduce asterism effect The operation complexity and use difficulty that fruit shoots.

The embodiment of the present invention also provides a kind of computer-readable recording medium, is stored on the computer-readable recording medium There is computer program, the computer program realizes following steps when being executed by processor：The frame for obtaining camera collection is pre- Look at image；Detect in the preview image with the presence or absence of highlighted spot light；If detecting there is high bright spot light in present filming scene Source, then obtain the highlighted point source image region in the preview image；Based on the highlighted point source image region, increase star Awns line.

Optionally, following steps can be also realized when computer program is performed：Determine the highlighted picture in the preview image The number of element；Obtain the arrangement information of all high luminance pixels；Based on the arrangement information, by the largest number of a line of high luminance pixels It is defined as target line；Based on the arrangement information, the largest number of row of high luminance pixels are defined as target column；Obtain the mesh The length of row and the length of the target column are marked, and is grown length is longer as the first length, the shorter conduct of length second Degree；Judge whether twice of second length is more than or equal to first length；If second length is big twice In or equal to first length, it is determined that highlighted spot light in the preview image be present；It is straight using second length Footpath, the midpoint of row or column corresponding to second length are that a circle is made in the center of circle；The round area defined is defined as The highlighted point source image region.

Optionally, following steps can be also realized when computer program is performed：Obtain each pixel in the preview image The brightness value of point；The number that brightness value is more than the pixel of predetermined threshold value is counted, obtains the number of the high luminance pixels.

Optionally, following steps can be also realized when computer program is performed：Determine the asterism parameter of asterism line；Based on institute Asterism parameter is stated, generates asterism line；Based on the highlighted point source image region, increase asterism line；Wherein, the asterism parameter At least one of in the length and high length of number, base including isosceles triangle, the isosceles triangle is the star The shape of awns line.

Optionally, following steps can be also realized when computer program is performed：Obtain default isosceles triangle number N； Obtain the girth of the circle；The girth is divided equally into N sections；Each section of both ends after division are connected into shape with straight line Into line segment；Each line segment is defined as to the base of each self-corresponding isosceles triangle, and the length of each line segment is defined as respectively The length on the base of self-corresponding isosceles triangle；Obtain the high length of default isosceles triangle；Wherein, N is more than 1 Positive integer.

Optionally, following steps can be also realized when computer program is performed：Obtain the base of default isosceles triangle Length；Obtain default isosceles triangle number N；Obtain the f-number of the camera of the mobile terminal；Based on the light Circle value, determine the high length of the isosceles triangle；Wherein, the high length of the f-number and the isosceles triangle into Inverse ratio, N are the positive integer more than 1.

Optionally, following steps can be also realized when computer program is performed：Based on the asterism parameter, asterism is generated Line；The brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed：By the picture of first number in the asterism line The brightness of element is arranged to the brightness in the center of circle；According to the rate of change of brightness to successively decrease, reduce in the asterism line second respectively The brightness of several pixels；Wherein, the pixel of first number is all pictures apart from the center of circle of the circle within a preset range Element；The pixel of second number is all pixels in the preset range apart from the center of circle of the circle；Described second The brightness of each pixel and the distance and the pixel in the center of circle of the circle in the pixel of number is inversely proportional.

Optionally, following steps can be also realized when computer program is performed：By adjusting exposure compensating, the star is set The brightness of each pixel in awns line；Synthesized by multiframe, the brightness of each pixel in the asterism line is set；It is highlighted by replicating The pixel in point source image region, the brightness of each pixel in the asterism line is set.

Optionally, following steps can be also realized when computer program is performed：Based on the highlighted point source image region, Determine the maximum inscribed circle in the highlighted point source image region；Determine the circumference of the maximum inscribed circle；On the circumference Direction away from the center of circle increases asterism line successively.

Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed The scope of the present invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.

In embodiment provided herein, it should be understood that disclosed apparatus and method, others can be passed through Mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, is only A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit Connect, can be electrical, mechanical or other forms.

The unit illustrated as separating component can be or may not be physically separate, show as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize scheme of the embodiment of the present invention according to the actual needs Purpose.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units it is integrated in a unit.

If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention. And foregoing storage medium includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes Medium.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims

A kind of 1. asterism image pickup method, applied to the mobile terminal with camera, it is characterised in that including：

Obtain a frame preview image of the camera collection；

Detect in the preview image with the presence or absence of highlighted spot light；

If detecting there is highlighted spot light in present filming scene, obtain the highlighted point source image area in the preview image Domain；

Based on the highlighted point source image region, increase asterism line.
2. according to the method for claim 1, it is characterised in that whether there is high bright spot in the detection preview image The step of light source, including：

Determine the number of the high luminance pixels in the preview image；

Obtain the arrangement information of all high luminance pixels；

Based on the arrangement information, the largest number of a line of high luminance pixels are defined as target line；

Based on the arrangement information, the largest number of row of high luminance pixels are defined as target column；

Obtain the length of the target line and the length of the target column, and using length it is longer as the first length, length compared with The short length of conduct second；

Judge whether twice of second length is more than or equal to first length；

If twice of second length is more than or equal to first length, it is determined that exists in the preview image highlighted Spot light；

It is described obtain in the preview image highlighted point source image region the step of, including：

Using second length as diameter, the midpoint of row or column corresponding to second length is that a circle is made in the center of circle；

The round area defined is defined as the highlighted point source image region.
3. according to the method for claim 2, it is characterised in that for determining the high luminance pixels in the preview image Several steps, including：

Obtain the brightness value of each pixel in the preview image；

The number that brightness value is more than the pixel of predetermined threshold value is counted, obtains the number of the high luminance pixels.
4. according to the method for claim 2, it is characterised in that described to be based on the highlighted point source image region, increase The step of asterism line, including：

Determine the asterism parameter of asterism line；

Based on the asterism parameter, asterism line is generated；

Based on the highlighted point source image region, increase asterism line；

Wherein, the asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, institute State the shape that isosceles triangle is the asterism line.
5. according to the method for claim 4, it is characterised in that it is described determine asterism line asterism parameter the step of, including：

Obtain default isosceles triangle number N；

Obtain the girth of the circle；

The girth is divided equally into N sections；

Each section of both ends after division are connected to form line segment with straight line；

Each line segment is defined as to the base of each self-corresponding isosceles triangle, and the length of each line segment is defined as it is each right The length on the base for the isosceles triangle answered；

Obtain the high length of default isosceles triangle；

Wherein, N is the positive integer more than 1.
6. according to the method for claim 4, it is characterised in that it is described determine asterism line asterism parameter the step of, including：

Obtain the length on the base of default isosceles triangle；

Obtain default isosceles triangle number N；

Obtain the f-number of the camera of the mobile terminal；

Based on the f-number, the high length of the isosceles triangle is determined；

Wherein, the high length of the f-number and the isosceles triangle is inversely proportional, and N is the positive integer more than 1.
7. according to the method for claim 4, it is characterised in that it is described to be based on the asterism parameter, generate the step of asterism line Suddenly, including：

Based on the asterism parameter, asterism line is generated；

The brightness of each pixel in the asterism line is set.
8. according to the method for claim 7, it is characterised in that described that the brightness of each pixel in the asterism line is set Step, including：

The brightness of the pixel of first number in the asterism line is arranged to the brightness in the center of circle；

According to the rate of change of brightness to successively decrease, reduce the brightness of the pixel of second number in the asterism line respectively；

Wherein, the pixel of first number is all pixels apart from the center of circle of the circle within a preset range；Described second The pixel of number is all pixels in the preset range apart from the center of circle of the circle；In the pixel of second number The brightness of each pixel and the distance and the pixel in the center of circle of the circle be inversely proportional.
9. according to the method for claim 7, it is characterised in that described that the brightness of each pixel in the asterism line is set Step, including it is at least one of following：

By adjusting exposure compensating, the brightness of each pixel in the asterism line is set；

Synthesized by multiframe, the brightness of each pixel in the asterism line is set；

By replicating the pixel in highlighted point source image region, the brightness of each pixel in the asterism line is set.
10. according to the method for claim 1, it is characterised in that described to be based on the highlighted point source image region, increase The step of asterism line, including：

Based on the highlighted point source image region, the maximum inscribed circle in the highlighted point source image region is determined；

Determine the circumference of the maximum inscribed circle；

The direction away from the center of circle increases asterism line successively on the circumference.
11. according to the method for claim 1, it is characterised in that with the presence or absence of highlighted in the detection preview image After the step of spot light, methods described also includes：

Show for indicating the mark into asterism screening-mode；

Detect the touch control operation in the mark；

If detecting the touch control operation, according to the touch control operation, the opening and closing of asterism screening-mode are controlled.
12. a kind of mobile terminal, including camera, it is characterised in that the mobile terminal also includes：

First acquisition module, for obtaining a frame preview image of the camera collection；

First detection module, for detecting in the preview image with the presence or absence of highlighted spot light；

Second acquisition module, if detecting that present filming scene has highlighted spot light for the first detection module, obtain Take the highlighted point source image region in the preview image；

Increase module, for based on the highlighted point source image region, increasing asterism line.
13. mobile terminal according to claim 12, it is characterised in that first detection module, including：

First determination sub-module, for determining the number of the high luminance pixels in the preview image；

First acquisition submodule, for obtaining the arrangement information of all high luminance pixels；

Second determination sub-module, for based on the arrangement information, the largest number of a line of high luminance pixels to be defined as into target line；

3rd determination sub-module, user are based on the arrangement information, and the largest number of row of high luminance pixels are defined as into target column；

Second acquisition submodule, for obtaining the length of the target line and the length of the target column, and length is longer As the first length, the shorter length of conduct second of length；

Judging submodule, for judging whether twice of second length be more than or equal to first length；

4th determination sub-module, if judging twice of second length to be more than or equal to for the judging submodule described First length, it is determined that highlighted spot light in the preview image be present；

Second acquisition module, including：

Submodule is made, for using second length as diameter, the midpoint of row or column corresponding to second length to be circle The heart makees a circle；

Determination sub-module, for the round area defined to be defined as into the highlighted point source image region.
14. mobile terminal according to claim 13, it is characterised in that first determination sub-module, including：

First acquisition unit, for obtaining the brightness value of each pixel in the preview image；

Statistic unit, for counting number of the brightness value more than the pixel of predetermined threshold value, obtain the number of the high luminance pixels.
15. mobile terminal according to claim 13, it is characterised in that the increase module, including：

5th determination sub-module, for determining the asterism parameter of asterism line；

Submodule is generated, for based on the asterism parameter, generating asterism line；

First increase submodule, for based on the highlighted point source image region, increasing asterism line；

Wherein, the asterism parameter includes at least one in the number, the length on base and high length of isosceles triangle, institute State the shape that isosceles triangle is the asterism line.
16. mobile terminal according to claim 15, it is characterised in that the 5th determination sub-module, including：

Second acquisition unit, for obtaining default isosceles triangle number N；

3rd acquiring unit, for obtaining the girth of the circle；

Division unit, for the girth to be divided equally into N sections；

Connection unit, for connecting to form line segment with straight line by each section of both ends after division；

First determining unit, for each line segment to be defined as to the base of each self-corresponding isosceles triangle, and by each line segment Length be defined as each self-corresponding isosceles triangle base length；

4th acquiring unit, for obtaining the high length of default isosceles triangle；

Wherein, N is the positive integer more than 1.
17. mobile terminal according to claim 15, it is characterised in that the 5th determination sub-module, including：

5th acquiring unit, the length on the base for obtaining default isosceles triangle；

6th acquiring unit, for obtaining default isosceles triangle number N；

7th acquiring unit, the f-number of the camera for obtaining the mobile terminal；

Second determining unit, for based on the f-number, determining the high length of the isosceles triangle；

Wherein, the high length of the f-number and the isosceles triangle is inversely proportional, and N is the positive integer more than 1.
18. mobile terminal according to claim 15, it is characterised in that the generation submodule, including：

Generation unit, for based on the asterism parameter, generating asterism line；

Setting unit, for setting the brightness of each pixel in the asterism line.
19. mobile terminal according to claim 18, it is characterised in that the setting unit, including：

First sets subelement, for the brightness of the pixel of first number in the asterism line to be arranged into the bright of the center of circle Degree；

Reduce subelement, for according to the rate of change of brightness to successively decrease, reducing the pixel of second number in the asterism line respectively Brightness；

Wherein, the pixel of first number is all pixels apart from the center of circle of the circle within a preset range；Described second The pixel of number is all pixels in the preset range apart from the center of circle of the circle；In the pixel of second number The brightness of each pixel and the distance and the pixel in the center of circle of the circle be inversely proportional.
20. mobile terminal according to claim 18, it is characterised in that the setting unit, including it is at least one of following：

Second sets subelement, for by adjusting exposure compensating, setting the brightness of each pixel in the asterism line；

3rd sets subelement, for being synthesized by multiframe, sets the brightness of each pixel in the asterism line；

4th sets subelement, for the pixel by replicating highlighted point source image region, sets each in the asterism line The brightness of pixel.
21. mobile terminal according to claim 12, it is characterised in that the increase module, including：

6th determination sub-module, for based on the highlighted point source image region, determining the highlighted point source image region Maximum inscribed circle；

7th determination sub-module, for determining the circumference of the maximum inscribed circle；

Second increase submodule, the direction for the remote center of circle on the circumference increase asterism line successively.
22. mobile terminal according to claim 12, it is characterised in that the mobile terminal also includes：

Display module, it is used to indicate the mark into asterism screening-mode for showing；

Second detection module, for detecting the touch control operation in the mark；

Control module, if detecting the touch control operation for second detection module, according to the touch control operation, control The opening and closing of asterism screening-mode.
23. a kind of mobile terminal, it is characterised in that including processor, memory and be stored on the memory and can be in institute State the computer program run on processor, the computer program realized during the computing device as claim 1 to The step of asterism image pickup method any one of 11.
24. a kind of computer-readable recording medium, it is characterised in that be stored with computer on the computer-readable recording medium Program, the asterism shooting side as any one of claim 1 to 11 is realized when the computer program is executed by processor The step of method.