CN110891145A - Method for obtaining image by photographing and electronic equipment - Google Patents
Method for obtaining image by photographing and electronic equipment Download PDFInfo
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- CN110891145A CN110891145A CN201911215341.XA CN201911215341A CN110891145A CN 110891145 A CN110891145 A CN 110891145A CN 201911215341 A CN201911215341 A CN 201911215341A CN 110891145 A CN110891145 A CN 110891145A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The embodiment of the application discloses a method for obtaining images by photographing and electronic equipment, wherein when a photographing image is collected and stored in response to a photographing instruction, a light compensation element is started, and light compensation is carried out on an area with darker light in a scene to be photographed by using the light compensation element, so that the photographing image is collected and stored based on the light compensation of the light compensation element, and the brightness of an image corresponding to the dark area in a preview image in the photographing image is improved. In addition, when the brightness of the image corresponding to the dark area in the preview image in the photographed image is improved, the light compensation element is used for directly performing real light compensation on the area where the scene corresponding to the dark area in the preview image is located, instead of performing post-processing on the picture through a software method, so that the obtained photographed image is natural, and the user experience is high.
Description
Technical Field
The present application relates to the field of photographing technologies, and in particular, to a method for obtaining an image by photographing and an electronic device.
Background
With the development of electronic technology, the application of image capturing elements is becoming more and more extensive, and the image capturing elements become essential components of electronic devices. When the existing electronic equipment shoots pictures in a backlight scene (namely a high-light-ratio scene), the collection of images of a bright part area and a dark part area in the pictures is realized mainly by continuously shooting a plurality of pictures of the same scene with different exposure amounts and extracting parts with rich details in different pictures. However, this method is mainly implemented by post-processing the picture by a software method, and therefore, the image quality of the finally obtained picture is affected, and the taken picture is unnatural, which affects the user experience.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a method for obtaining an image by taking a picture, where the method includes:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to a shooting instruction and starting a light compensation element;
acquiring and storing a photographed image based on the light compensation of the light compensation element, wherein the brightness of a first area in the photographed image is improved compared with the brightness of a dark area in a preview image;
wherein the first region in the photographed image corresponds to a dark region in the preview image.
Optionally, the method further includes:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a brightness parameter of the light compensation element acting on the shooting image based on the preview image so as to improve the brightness of a first object in the shooting image obtained by responding to the shooting instruction, wherein the first object is an image of an object relatively close to a shooting module in the electronic equipment in the shooting scene.
Optionally, the method further includes:
and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a first shooting parameter of a camera module acting on the shooting image based on the preview image so as to reduce the brightness of the shooting image obtained by responding to the shooting instruction.
Optionally, the method further includes:
acquiring a photographing instruction, wherein the photographing instruction is used for instructing the camera module to acquire an image based on the first photographing parameter and enabling the light compensation element to be lightened based on the brightness parameter;
the light compensation based on the light compensation element is used for collecting and storing the photographed image and comprises the following steps:
and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image based on the first photographing parameter by using the camera module.
Optionally, the method further includes:
obtaining the preview image;
and determining whether the photographed scene of the electronic equipment belongs to a high-light-ratio scene or not based on the preview image.
Optionally, the determining, based on the preview image, whether the photographed scene of the electronic device belongs to a high-light-ratio scene includes:
acquiring the brightness value of each pixel point in the preview image;
and if the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value, determining that the shooting scene where the electronic equipment is located belongs to a high-light-ratio scene.
Optionally, the method further includes:
distinguishing a foreground region and a background region based on the depth information of the preview image;
if the method comprises the step of determining the first photographing parameter of the camera module group for acting on the photographed image based on the preview image, the step of determining the first photographing parameter of the camera module group for acting on the photographed image based on the preview image comprises the following steps: generating a first photographing parameter for acting on a camera module of a photographed image based on the brightness parameter of the background area;
if the method includes determining a brightness parameter of the light compensation element for acting on a photographed image based on the preview image, the determining a brightness parameter of the light compensation element for acting on a photographed image based on the preview image includes: and generating the brightness parameter of the light compensation element used for acting on the photographed image based on the brightness parameter of the foreground area.
In a second aspect, an embodiment of the present application provides an electronic device, including: light compensation component, shooting module and processing element, processing element is used for carrying out:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to a shooting instruction, starting a light compensation element, and acquiring and storing a shooting image by utilizing the shooting module based on the light compensation of the light compensation element, wherein the brightness of a first area in the shooting image is improved compared with the brightness of a dark area in a preview image;
wherein the first region corresponds to a dark region in the preview image.
Optionally, the camera module includes a shutter and an inductive coupling element, and the processing element is further configured to:
and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a first shooting parameter of the shutter and the inductive coupling element in the camera module acting on the shooting image based on the preview image so as to reduce the brightness of the shooting image obtained by responding to the shooting instruction.
Optionally, the camera module includes a first image capturing element and a second image capturing element, and the processing element is further configured to:
based on a first preview image acquired by the first image acquisition element and a second preview image acquired by the second acquisition element, distinguishing a foreground region from a background region in the preview image;
the first preview image and the second preview image are preview images generated by the first image acquisition element and the second image acquisition element based on the same shooting scene at the same time, and the first preview image and the second preview image have parallax.
According to the method for obtaining the image by photographing, when the photographing image is collected and stored in response to the photographing instruction, the light compensation element is started, and light compensation is performed on the area with darker light in the scene to be photographed by the light compensation element, so that the photographing image is collected and stored based on the light compensation of the light compensation element, and the brightness of the image corresponding to the dark area in the preview image in the photographing image is improved.
In addition, according to the method for obtaining the image by photographing provided by the embodiment of the application, when the brightness of the image corresponding to the dark region in the preview image in the photographed image is improved, the light compensation element is directly used for performing real light compensation on the region where the scene corresponding to the dark region in the preview image is located, instead of performing post-processing on the picture by a software method, so that the obtained photographed image is relatively natural, and the user experience is relatively high.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for obtaining an image by photographing according to an embodiment of the present application;
FIG. 2 is a flowchart of a method for obtaining images by taking pictures according to another embodiment of the present application;
fig. 3 is a schematic diagram of the number of pixels corresponding to each brightness value in the preview image, in which the abscissa represents the brightness value, and the ordinate represents the number of pixels corresponding to each brightness value;
FIG. 4 is a flowchart of a method for obtaining images by taking pictures according to another embodiment of the present application;
fig. 5 is a schematic diagram of the number of pixels corresponding to each brightness value in the first image, in which the abscissa represents the brightness value and the ordinate represents the number of pixels corresponding to each brightness value;
FIG. 6 is a diagram illustrating an effect of obtaining a photographed image by using the method for obtaining an image by photographing provided by the embodiment of the present application;
FIG. 7 is a diagram illustrating the effect of obtaining a photographed image by a conventional photographing image obtaining method;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
As described in the background section, when the existing electronic device collects the image of the backlight scene, the taken picture is unnatural, which affects the user experience
In view of this, an embodiment of the present application provides a method for obtaining an image by taking a picture, as shown in fig. 1, the method includes:
s1: and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to the shooting instruction and starting the light compensation element.
Specifically, in an embodiment of the present application, the photographing scene of the electronic device belongs to a high light ratio scene includes that the photographing scene of the electronic device is a backlight scene, and for example, when a user of the electronic device photographs a scene in front of the electronic device by using the electronic device, light emitted by a light source (such as a sun, a lamp, and the like) is emitted from the back of the user to the user, the photographing scene of the electronic device is the backlight scene, but the present application does not limit this, and in other embodiments of the present application, the photographing scene of the electronic device may also be another high light ratio scene, as the case may be.
Optionally, on the basis of the above embodiments, in an embodiment of the present application, the light compensation element is a light compensation element built in the electronic device, such as a flash lamp of the electronic device, but the present application does not limit this, and in other embodiments of the present application, the light compensation element may also be a light compensation element independent from the electronic device, as the case may be.
Based on any of the above embodiments, in an embodiment of the present application, as shown in fig. 2, the method further includes: based on the current shooting mode of the electronic device, whether the shooting scene where the electronic device is located belongs to a high-light-ratio scene is determined, that is, in the embodiment of the application, a user can manually select the current shooting mode of the electronic device, so that the shooting scene where the electronic device is located belongs to the high-light-ratio scene.
In another embodiment of the present application, the method further comprises: and determining whether the photographed scene where the electronic equipment is positioned is in a high-light ratio scene or not based on the preview image for previewing. Specifically, in one embodiment of the present application, the method includes: obtaining the preview image; and determining whether the photographed scene of the electronic equipment belongs to a high-light-ratio scene or not based on the preview image.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, the determining, based on the preview image, whether the shooting scene of the electronic device belongs to a high-light-ratio scene includes: acquiring the brightness value of each pixel point in the preview image; and if the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value, determining that the shooting scene where the electronic equipment is located belongs to a high-light-ratio scene.
Specifically, in an embodiment of the present application, the obtaining the brightness value of each pixel point in the preview image includes: obtaining a gray image corresponding to the preview image based on the preview image; determining the brightness value of each pixel point in the preview image based on the gray image corresponding to the preview image; and then determining whether the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value or not based on the brightness value of each pixel in the preview image, if so, determining that the shooting scene of the electronic equipment belongs to a high-light-ratio scene, and otherwise, determining that the shooting scene of the electronic equipment does not belong to the high-light-ratio scene.
In another embodiment of the present application, the obtaining the brightness value of each pixel point in the preview image includes: obtaining a YUV format image corresponding to the preview image based on the preview image; determining the brightness value of each pixel point in the preview image based on the YUV format image corresponding to the preview image; and then determining whether the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value or not based on the brightness value of each pixel in the preview image, if so, determining that the shooting scene of the electronic equipment belongs to a high-light-ratio scene, and otherwise, determining that the shooting scene of the electronic equipment does not belong to the high-light-ratio scene. It should be noted that, in the embodiment of the present application, the larger the Y component corresponding to each pixel point in the YUV format image corresponding to the preview image is, the larger the brightness value corresponding to the pixel point is.
Optionally, on the basis of the above embodiments, in an embodiment of the present application, the first luminance range is 0 to 50 inclusive, the second luminance range is 200 to 255 inclusive, and the first ratio is 40%, but the present application is not limited thereto, and in other embodiments of the present application, the first ratio may also be 30% or other values, as the case may be. As shown in fig. 3, fig. 3 is a schematic diagram illustrating the number of pixels corresponding to each brightness value in the preview image. The abscissa represents the brightness value, and the ordinate represents the number of pixel points corresponding to each brightness value.
S2: and acquiring and storing a shot image based on the light compensation of the light compensation element, wherein the brightness of a first area in the shot image is improved compared with the brightness of a dark area in a preview image, and the first area corresponds to the dark area in the preview image. It should be noted that, in this application embodiment, the picture of shooing with the scene of shooing that the preview image corresponds is same scene of shooing, the preview image is before the electronic equipment response instruction of shooing the image that electronic equipment gathered, the picture of shooing is for based on the image that the preview image formed, if the scene of shooing that electronic equipment was located is the high optical ratio scene, there are bright region and dark zone in the preview image before receiving the instruction of shooing by electronic equipment, wherein, in the scene of shooing, the light intensity of the scene that bright region corresponds is greater than the scene light intensity that the dark zone corresponds.
Specifically, in an embodiment of the present application, acquiring and saving a captured image based on the light compensation of the light compensation element includes acquiring and saving a captured image based on the light compensation of the light compensation element by using a camera module.
On the basis of the foregoing embodiment, in an embodiment of the present application, a camera module in the electronic device is a rear camera module, and the photographed image is a photographed scene image of a side of the electronic device away from a user, which is acquired by the electronic device; in another embodiment of the present application, a camera module in the electronic device is a front camera module, and the photographed image is a photographed scene image of the side of the electronic device facing a user, which is acquired by the electronic device; in another embodiment of the present application, the electronic device only has a rear light compensation element and no front light compensation element, and in this embodiment of the present application, no matter the photographed image is the photographed scene image of the side of the electronic device away from the user or the photographed scene image of the side of the electronic device toward which the electronic device is oriented, the light compensation element is the rear light compensation element of the electronic device, in yet another embodiment of the present application, the electronic device only has a front light compensation element and no rear light compensation element, and in this embodiment of the present application, no matter the photographed image is the photographed scene image of the side of the electronic device away from the user or the photographed scene image of the side of the electronic device toward which the electronic device is oriented, the light compensation element is the front light compensation element of the electronic device, the present application does not limit this, as long as the light compensation element is turned on, the light of the shooting scene portion corresponding to the dark area in the preview image can be enhanced
According to the method for obtaining the image by photographing, when the photographing image is collected and stored in response to the photographing instruction, the light compensation element is started, and light compensation is performed on the area with darker light in the scene to be photographed by the light compensation element, so that the photographing image is collected and stored based on the light compensation of the light compensation element, and the brightness of the image corresponding to the dark area in the preview image in the photographing image is improved.
In addition, according to the method for obtaining the image by photographing provided by the embodiment of the application, when the brightness of the image corresponding to the dark region in the preview image in the photographed image is improved, the light compensation element is directly used for performing real light compensation on the region where the scene corresponding to the dark region in the preview image is located, instead of performing post-processing on the picture by a software method, so that the obtained photographed image is relatively natural, and the user experience is relatively high.
On the basis of the above embodiment, in an embodiment of the present application, as shown in fig. 4, before responding to the photographing instruction, the method further includes: and if the shooting scene of the electronic equipment is in a high light ratio scene, determining the brightness parameter of the light compensation element acting on the shooting image based on the preview image so as to improve the brightness of the first object in the shooting image obtained by responding to the shooting instruction. In this embodiment of the application, the acquiring and storing the photographed image based on the light compensation of the light compensation element includes: and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image by using a camera module of the electronic equipment.
Specifically, in an embodiment of the present application, when determining the brightness parameter of the light compensation element, which is used for acting on the photographed image, based on the preview image, the brightness parameters of the light compensation element, which are corresponding to different preview images, acting on the photographed image are not identical, so that when acquiring and storing the photographed image based on the light compensation of the light compensation element, the brightness compensation parameter adapted to the photographed scene corresponding to the preview image can be determined based on the preview image, thereby improving the quality of the photographed image.
In an embodiment of the present application, on the basis of the above embodiment, the first object is a scene of an object relatively close to the shooting module in the electronic device in the shooting scene, that is, the first object corresponds to an object in a foreground region in the shooting scene, so as to improve the brightness of a scene in the foreground region in the shooting scene in the shooting image.
It should be noted that, during actual shooting, if a shooting scene where the electronic device is located is a high light ratio scene, under the condition of no light compensation, in a normal case, light in a background area in the shooting scene is brighter and light in a foreground area is darker, so as to avoid influencing a light compensation effect of the light compensation element by determining a brightness parameter of the light compensation element based on light intensity of the background area, on the basis of the above embodiment, in an embodiment of the present application, the method further includes: the method comprises the steps of distinguishing a foreground area and a background area based on depth of field information of a preview image, wherein the foreground area is close to a camera module and belongs to a close-range area, and the background area is far away from the camera module and belongs to a distant-range area, so that the adjustment of photographing parameters and brightness parameters is performed based on the light intensity of different areas in a photographing scene, and the quality of the photographed image is improved.
Specifically, on the basis of the above embodiment, in an embodiment of the present application, the camera module includes a first image capturing element and a second image capturing element, and the method further includes: a foreground region and a background region are distinguished based on a first preview image acquired by the first image acquisition element and a second preview image acquired by the second image acquisition element. The first preview image and the second preview image are preview images generated by the first image acquisition element and the second image acquisition element based on the same shooting scene at the same time, and the first preview image and the second preview image have parallax. Optionally, the first image acquisition element and the second image acquisition element are cameras, that is, the shooting module is a dual-camera structure.
It should be noted that, when an image is acquired by using a dual-camera structure, the smaller the parallax of the object in the shooting scene in the images acquired by the two cameras is, the closer the object on the surface is to the shooting module, the larger the parallax of the object in the shooting scene in the images acquired by the two cameras is, and the farther the object on the surface is from the shooting module, so that the method provided by the embodiment of the present application can distinguish the foreground area and the background area in the preview image based on the parallax of each image in the first preview image and the second preview image.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, determining the brightness parameter of the light compensation element for acting on the photographed image based on the preview image includes: and generating the brightness parameter of the light compensation element used for acting on the photographed image based on the brightness parameter of the foreground area so as to improve the light compensation effect of the light compensation element and improve the quality of the photographed image.
Because when actually taking a picture, if the scene of taking a picture that the electronic equipment is located is the scene of high light ratio, the light intensity of the background area in the scene of taking a picture is generally stronger, before carrying out light compensation to the foreground area, because the light of the foreground area is weaker, the light of the whole scene of taking a picture (including the foreground area and the background area) may accord with the demand of taking a picture, after carrying out light compensation to the foreground area, the whole light of the scene of taking a picture may be too strong, does not accord with the demand of taking a picture, therefore, on the basis of the above-mentioned embodiment, in an embodiment of this application, this method further includes: and if the shooting scene of the electronic equipment is in a high-light ratio scene, determining a first shooting parameter of a camera module acting on the shot image based on the preview image so as to reduce the brightness of the shot image obtained by responding to the shooting instruction.
It should be noted that, in the embodiment of the present application, when the light compensation element is not turned on (i.e., when the light compensation element is not used for light compensation), the brightness of the photographed image collected and stored by the camera module based on the first photographing parameter may be reduced. And because the light compensation range of the light compensation element is limited and basically limited to the foreground region in the shooting scene, when the light compensation element is started (namely, under the light compensation of the light compensation element), the shooting module is used for collecting and storing the shot image based on the first shooting parameter, the brightness of the background region is reduced, the brightness of the foreground region is improved, namely, the brightness of the image corresponding to the object relatively far away from the shooting module in the shooting scene is reduced, and the brightness of the image corresponding to the object relatively close to the shooting module in the shooting scene is improved.
Therefore, in the embodiment of the present application, acquiring and saving a photographed image based on the light compensation of the light compensation element includes: under the light compensation of the light compensation element, the camera module is utilized to collect and store the photographed image based on the first photographing parameter, so that the brightness of the image corresponding to the background area in the photographed image obtained by responding to the photographing instruction is reduced, the brightness of the image corresponding to the foreground area is improved, the brightness of the image corresponding to the background area is reduced on the basis of improving the brightness of the image corresponding to the foreground area in the photographed image, and the brightness balance of the photographed image is improved.
In order to improve the accuracy of the first photographing parameter, determined based on the preview image, for acting on the camera module of the photographed image, optionally, on the basis of the above embodiment, in an embodiment of the present application, the determining the first photographing parameter, determined based on the preview image, for acting on the camera module of the photographed image includes: and generating a first photographing parameter for acting on the camera module for photographing the image based on the brightness parameter of the background region so as to avoid generating the first photographing parameter for acting on the camera module for photographing the image based on the brightness parameter of the foreground region, thereby avoiding overhigh brightness of the photographed image.
On the basis of the foregoing embodiment, in an embodiment of the present application, if a photographing scene of the electronic device is a high light ratio scene, determining, based on the preview image, a first photographing parameter of a camera module that acts on the photographed image, so that a brightness reduction of the photographed image obtained in response to the photographing instruction includes: and if the scene of the electronic equipment is in a high-light-ratio scene, determining a first sensitivity and a first exposure time of a camera module acting on the photographed image based on the preview image so as to reduce the brightness of the photographed image obtained corresponding to the photographing instruction.
Specifically, in an embodiment of the present application, the image capturing module includes a shutter and an inductive coupling element, wherein the determining, based on the preview image, a first sensitivity and a first exposure time of the image capturing module acting on the photographed image includes: and determining a first sensitivity of an inductive coupling element and a first exposure time of a shutter in a camera module acting on the photographed image based on the preview image.
In addition to the above embodiments, in an embodiment of the present application, the method calculates the brightness parameter of the light compensation element on the basis of determining the first photographing parameter of the image capturing module acting on the photographed image based on the preview image, so that the light entering amount of the image capturing module is increased by 4 times (+2EV), but the present application is not limited thereto, and the method is determined as the case may be. Specifically, in one embodiment of the present application, the method adjusts the brightness parameter of the light compensation element by adjusting the driving current of the light compensation element.
In addition, since during actual photographing, if the photographing scene where the electronic device is located is a high light ratio scene, the light intensity of the distant view area in the photographing scene may occasionally be weak, on the basis of the above embodiment, in an embodiment of the present application, the method further includes: and if the shooting scene of the electronic equipment is in a high light ratio scene, determining a second shooting parameter of the camera module acting on the shot image based on the preview image so as to improve the brightness of the shot image obtained by responding to the shooting instruction. In the embodiment of the present application, the acquiring and storing the photographed image based on the light compensation of the light compensation element includes: under the light compensation of the light compensation element, the camera module is utilized to collect and store the photographed image based on the second photographing parameter, so that the brightness of the photographed image obtained by responding to the photographing instruction is improved, and the brightness of the image corresponding to the object relatively close to the camera module in the photographing scene is further improved.
It should be noted that, in this embodiment of the application, if the photographing scene of the electronic device is a high light ratio scene, determining, based on the preview image, a second photographing parameter for acting on the camera module of the photographed image, so that the brightness improvement of the photographed image obtained in response to the photographing instruction is as follows: and if the shooting scene of the electronic equipment is in a high light ratio scene, determining a second shooting parameter of the camera module acting on the shot image based on the preview image so as to improve the brightness of the images of the corresponding background area and the foreground area in the shot image obtained by responding to the shooting instruction and improve the quality of the shot image.
On the basis of the foregoing embodiment, in an embodiment of the present application, if the photographing scene of the electronic device is a high light ratio scene, determining, based on the preview image, a second photographing parameter for acting on the camera module of the photographed image, so that the brightness improvement of the photographed image obtained in response to the photographing instruction includes: and if the scene of the electronic equipment is in a high-light-ratio scene, determining second sensitivity and second exposure time of a camera module acting on the photographed image based on the preview image so as to improve the brightness of the photographed image obtained corresponding to the photographing instruction. Wherein the second sensitivity is greater than the first sensitivity, and the second exposure time is greater than the first exposure time.
Similarly, on the basis of the foregoing embodiment, in an embodiment of the present application, the determining, based on the preview image, the second photographing parameter of the camera module for acting on the photographed image includes: and generating a second photographing parameter of the camera module based on the brightness parameter of the background area, wherein the second photographing parameter is used for acting on a photographed image.
It should be noted that, during actual photographing, if the photographing scene where the electronic device is located is a high light ratio scene, the light intensity of the distant view region in the photographing scene may not meet the current photographing requirement (for example, the light is strong or weak), and may also meet the current photographing requirement, so as to avoid that the image quality of the photographed image is affected by misadjusting the photographing parameters of the camera module of the photographed image. On the basis of the above embodiment, in an embodiment of the present application, the method further includes: if the shooting scene of the electronic equipment is a high-light-ratio scene, judging whether an image corresponding to an object in a background area in the shooting scene meets a first condition or not based on the preview image; if the image corresponding to the object in the background area in the photographing scene in the preview image meets a first condition, determining the photographing parameters of the photographing module group acting on the photographed image based on the preview image so as to respond to the photographing instruction to obtain the brightness change of the photographed image is not executed, otherwise, determining the photographing parameters of the photographing module group acting on the photographed image based on the preview image so as to respond to the photographing instruction to obtain the brightness change of the photographed image.
On the basis of the foregoing embodiment, in an embodiment of the present application, determining whether an image corresponding to an object in a background area in the photo scene meets a first condition based on the preview image includes:
acquiring a first image corresponding to a background area in the photographing scene in the preview image and the brightness value of each pixel point in the first image;
determining the number of pixels corresponding to different brightness values in the first image;
if the proportion of the number of pixels in the third brightness range to the total number of pixels in the first image is within a first proportion value range, the image corresponding to the object in the background area in the photographing scene meets a first condition, otherwise, the image corresponding to the object in the background area in the photographing scene does not meet the first condition.
Optionally, on the basis of the above embodiment, in an embodiment of the present application, the first ratio value range is not less than 60%, but the present application does not limit this, and the first ratio value range may also be not less than 70% or other values, as the case may be.
On the basis of the foregoing embodiment, in an embodiment of the present application, the obtaining the brightness value of each pixel point in the first image includes: obtaining a gray level image corresponding to the first image based on the first image; the brightness value of each pixel point in the first image is obtained based on the gray-scale image corresponding to the first image, wherein the brightness value of each pixel point in the first image ranges from 0 to 255, and in an optional embodiment of the present application, the third brightness range is 50 to 200, but this is not limited in this application, and is specifically determined according to the circumstances.
As shown in fig. 5, fig. 5 is a schematic diagram illustrating the number of pixels corresponding to each brightness value in the first image. The abscissa represents the brightness value, and the ordinate represents the number of pixel points corresponding to each brightness value.
On the basis of the above embodiment, in an embodiment of the present application, the method further includes: and acquiring a photographing instruction, wherein the photographing instruction is used for instructing the camera module to acquire images based on the photographing parameters and the light compensation element to light based on the brightness parameters. In this embodiment of the application, the acquiring and storing the photographed image based on the light compensation of the light compensation element includes: and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image based on the photographing parameter by using the camera module. Wherein, utilize the module of making a video recording based on parameter acquisition and save the image of shooing includes: and acquiring and storing the photographed image based on the first photographing parameter by using the photographing module, or acquiring and storing the photographed image based on the second photographing parameter by using the photographing module.
As shown in fig. 6 and 7, fig. 6 is a diagram illustrating the effect of obtaining a photographed image by using the method for obtaining an image by photographing provided in the embodiment of the present application, and fig. 7 is a diagram illustrating the effect of obtaining a photographed image by using a conventional method for obtaining an image by photographing, as can be seen from fig. 6 and 7, the method for obtaining an image by photographing provided in the embodiment of the present application can significantly improve the quality of a photographed image.
Correspondingly, the embodiment of the application also provides the electronic equipment which can be mobile phones, computers, cameras and other electronic equipment with the photographing function. As shown in fig. 8, the electronic apparatus includes: the light compensation element 100, the camera module 200 and the processing element 300, wherein the processing element 300 is configured to perform:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to a shooting instruction, starting the light compensation element 100, and acquiring and storing a shooting image by utilizing the camera module 200 based on the light compensation of the light compensation element 100, wherein the brightness of a first area in the shooting image is improved compared with the brightness of a dark area in a preview image; wherein the first region in the photographed image corresponds to a dark region in the preview image.
Optionally, on the basis of the above embodiments, in an embodiment of the present application, the light compensation element is a light compensation element built in the electronic device, such as a flash lamp or a display screen of the electronic device, but the present application is not limited thereto, and in other embodiments of the present application, the light compensation element may also be a light compensation element independent from the electronic device, as the case may be.
On the basis of the foregoing embodiment, in an embodiment of the present application, the processing element is further configured to perform: determining whether the shooting scene of the electronic equipment belongs to a high-light-ratio scene or not based on the current shooting mode of the electronic equipment, and/or determining whether the shooting scene of the electronic equipment belongs to the high-light-ratio scene or not based on the preview image for previewing.
On the basis of the foregoing embodiment, in an embodiment of the present application, the processing element is configured to, when executing the step of determining whether the photographing scene where the electronic device is located is in the high-light ratio scene based on the preview image for previewing, specifically: acquiring the brightness value of each pixel point in the preview image; and if the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value, determining that the shooting scene where the electronic equipment is located belongs to a high-light-ratio scene.
The electronic equipment that this application embodiment provided, processing element when the response instruction of shooing is gathered and is preserved the image of shooing, starts the light compensation component, utilizes the light compensation component to treat the regional light compensation that is darker in the scene of shooing to light compensation based on the light compensation component is gathered and is preserved the image of shooing, in order to promote correspond the luminance of the image of dark zone in the preview image in the image of shooing.
Moreover, according to the electronic device provided by the embodiment of the application, when the brightness of the image corresponding to the dark region in the preview image in the photographed image is improved, the light compensation element is utilized to directly correspond to the scene region corresponding to the dark region in the preview image to perform real light compensation, instead of performing post-processing on the picture through a software method, so that the obtained photographed image is natural, and the user experience is high.
On the basis of any of the foregoing embodiments, in an embodiment of the present application, the processing element is further configured to, before responding to the photographing instruction: and if the shooting scene of the electronic equipment is in a high light ratio scene, determining the brightness parameter of the light compensation element acting on the shooting image based on the preview image so as to improve the brightness of the first object in the shooting image obtained by responding to the shooting instruction. In this embodiment of the application, the processing element, when being configured to perform the light compensation acquisition based on the light compensation element and store the photographed image, is specifically configured to: and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image by using a camera module of the electronic equipment.
In an embodiment of the present application, on the basis of the above embodiment, the first object is a scene of an object relatively close to the shooting module in the electronic device in the shooting scene, that is, the first object corresponds to an object in a foreground region in the shooting scene, so as to improve the brightness of a scene in the foreground region in the shooting scene in the shooting image.
It should be noted that, during actual shooting, if a shooting scene where the electronic device is located is a high light ratio scene, under the condition of no light compensation, in a normal case, light in a background area in the shooting scene is brighter and light in a foreground area is darker, so as to avoid that a brightness parameter of the light compensation element is determined based on light intensity of the background area to influence a light compensation effect of the light compensation element, on the basis of the above embodiment, in an embodiment of the present application, the processing element is further configured to perform: the method comprises the steps of distinguishing a foreground area and a background area based on depth of field information of a preview image, wherein the foreground area is close to a camera module and belongs to a close-range area, and the background area is far away from the camera module and belongs to a distant-range area, so that the adjustment of photographing parameters and brightness parameters is performed based on the light intensity of different areas in a photographing scene, and the quality of the photographed image is improved.
Specifically, on the basis of the above embodiment, in an embodiment of the present application, the camera module includes a first image capturing element and a second image capturing element, and the processing element is further configured to execute: a foreground region and a background region are distinguished based on a first preview image acquired by the first image acquisition element and a second preview image acquired by the second image acquisition element. The first preview image and the second preview image are preview images generated by the first image acquisition element and the second image acquisition element based on the same shooting scene at the same time, and the first preview image and the second preview image have parallax. Optionally, the first image acquisition element and the second image acquisition element are cameras, that is, the shooting module is a dual-camera structure.
It should be noted that, when an image is captured by using a dual-camera structure, the smaller the parallax of the object in the shooting scene in the images captured by the two cameras is, the closer the object on the surface is to the shooting module, the larger the parallax of the object in the shooting scene in the images captured by the two cameras is, the farther the object on the surface is from the shooting module, and therefore, in the electronic device provided in the embodiment of the present application, the processing element may distinguish the foreground area and the background area in the preview image based on the parallax of each image in the first preview image and the second preview image.
Optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, the processing element, when being configured to determine the brightness parameter of the light compensation element acting on the photographed image based on the preview image, is specifically configured to: and generating the brightness parameter of the light compensation element used for acting on the photographed image based on the brightness parameter of the foreground area so as to improve the light compensation effect of the light compensation element and improve the quality of the photographed image.
On the basis of any of the foregoing embodiments, in an embodiment of the present application, the image capturing module includes a shutter and an inductive coupling element, and the processing element is further configured to: and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining shooting parameters of the shutter and the inductive coupling element in the camera module acting on the shot image based on the preview image so as to reduce the brightness of the shot image obtained by responding to the shooting instruction.
Because when actually shooing, if the scene of shooing that electronic equipment was located is the scene of high optical ratio, the light intensity of the background region is generally stronger in the scene of shooing, before carrying out light compensation to the foreground region, because the light of foreground region is weaker, the light of the whole scene of shooing (including foreground region and background region) probably accords with the demand of shooing, carries out light compensation to the foreground region after, the whole light of the scene of shooing probably is too strong, does not accord with the demand of shooing, consequently, on the basis of above-mentioned embodiment, in an embodiment of this application, processing element still is used for carrying out: and if the shooting scene of the electronic equipment is in a high-light ratio scene, determining a first shooting parameter of the shutter and the inductive coupling element in the camera module acting on the shot image based on the preview image so as to reduce the brightness of the shot image obtained by responding to the shooting instruction. In this embodiment of the application, the processing element is specifically configured to perform, when performing the light compensation acquisition based on the light compensation element and saving the photographed image: and under the light compensation of the light compensation element, acquiring and storing a photographed image based on the first photographing parameter by using the camera module.
In order to improve the accuracy of the first photographing parameter of the camera module, which is determined based on the preview image and used for acting on the photographed image, optionally, on the basis of the foregoing embodiment, in an embodiment of the present application, the processing element is specifically configured to, when executing the determination of the first photographing parameter of the camera module used for acting on the photographed image based on the preview image: and generating a first photographing parameter for acting on the camera module for photographing the image based on the brightness parameter of the background region so as to avoid generating the first photographing parameter for acting on the camera module for photographing the image based on the brightness parameter of the foreground region, thereby avoiding overhigh brightness of the photographed image. Wherein the first photographing parameter includes a first exposure time of the shutter and a first sensitivity of the inductive coupling element.
It should be noted that, during actual photographing, if the photographing scene where the electronic device is located is a high light ratio scene, the light intensity of the distant view region in the photographing scene may not meet the current photographing requirement (for example, the light is strong), and may also meet the current photographing requirement, so as to avoid that the image quality of the photographed image is affected by misadjusting the photographing parameters of the camera module of the photographed image. On the basis of the foregoing embodiment, in an embodiment of the present application, the processing element is further configured to perform: if the shooting scene of the electronic equipment is a high-light-ratio scene, judging whether an image corresponding to an object in a background area in the shooting scene meets a first condition or not based on the preview image; if the image corresponding to the object in the background area in the shooting scene in the preview image meets a first condition, adjusting the shooting parameters of the shooting module based on the preview image, otherwise, adjusting the shooting parameters of the shooting module based on the preview image.
On the basis of the foregoing embodiment, in an embodiment of the present application, when the processing element determines, based on the preview image, whether an image corresponding to an object in a background area in the photographed scene meets a first condition, the processing element is specifically configured to:
acquiring a first image corresponding to a background area in the photographing scene in the preview image and the brightness value of each pixel point in the first image;
determining the number of pixels corresponding to different brightness values in the first image;
if the proportion of the number of pixels in the third brightness range to the total number of pixels in the first image is within a first proportion value range, the image corresponding to the object in the background area in the photographing scene meets a first condition, otherwise, the image corresponding to the object in the background area in the photographing scene does not meet the first condition.
On the basis of any of the foregoing embodiments, in an embodiment of the present application, the processing element is further configured to perform: and acquiring a photographing instruction, wherein the photographing instruction is used for instructing the camera module to acquire images based on the photographing parameters and the light compensation element to light based on the brightness parameters. In this embodiment of the application, the processing element, when being configured to perform the light compensation acquisition based on the light compensation element and store the photographed image, is specifically configured to: and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image based on the photographing parameter by using the camera module.
To sum up, in the electronic equipment that this application embodiment provided, processing element starts the light compensation component when responding the instruction collection of shooing and saving the image of shooing, utilizes the light compensation component to treat the regional light compensation that is darker in the scene of shooing to light compensation based on the light compensation component is gathered and is saved the image of shooing, in order to promote correspond the luminance of the image of dark zone in the preview image in the image of shooing.
Moreover, in the electronic device provided by the embodiment of the application, when the brightness of the image corresponding to the dark region in the preview image in the photographed image is improved, the light compensation element is used for directly performing real light compensation on the region where the scene corresponding to the dark region in the preview image is located, instead of performing post-processing on the picture by a software method, so that the obtained photographed image is relatively natural, and the user experience is relatively high.
In the description, each part is described in a progressive manner, each part is emphasized to be different from other parts, and the same and similar parts among the parts are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of obtaining an image by taking a picture, the method comprising:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to a shooting instruction and starting a light compensation element;
acquiring and storing a photographed image based on the light compensation of the light compensation element, wherein the brightness of a first area in the photographed image is improved compared with the brightness of a dark area in a preview image;
wherein the first region in the photographed image corresponds to a dark region in the preview image.
2. The method of claim 1, further comprising:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a brightness parameter of the light compensation element acting on the shooting image based on the preview image so as to improve the brightness of a first object in the shooting image obtained by responding to the shooting instruction, wherein the first object is an image of an object relatively close to a shooting module in the electronic equipment in the shooting scene.
3. The method of claim 2, further comprising:
and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a first shooting parameter of a camera module acting on the shooting image based on the preview image so as to reduce the brightness of the shooting image obtained by responding to the shooting instruction.
4. The method of claim 3, further comprising:
acquiring a photographing instruction, wherein the photographing instruction is used for instructing the camera module to acquire an image based on the first photographing parameter and enabling the light compensation element to be lightened based on the brightness parameter;
the light compensation based on the light compensation element is used for collecting and storing the photographed image and comprises the following steps:
and under the light compensation of lightening the light compensation element by the brightness parameter, acquiring and storing a photographed image based on the first photographing parameter by using the camera module.
5. The method of any of claims 1-4, further comprising:
obtaining the preview image;
and determining whether the photographed scene of the electronic equipment belongs to a high-light-ratio scene or not based on the preview image.
6. The method of claim 5, wherein the determining whether the photographed scene of the electronic device belongs to a high-light-ratio scene based on the preview image comprises:
acquiring the brightness value of each pixel point in the preview image;
and if the ratio of the sum of the number of the pixels meeting the first brightness range and the number of the pixels meeting the second brightness range to the total number of the pixels in the preview image exceeds a first numerical value, determining that the shooting scene where the electronic equipment is located belongs to a high-light-ratio scene.
7. The method of claim 6, further comprising:
distinguishing a foreground region and a background region based on the depth information of the preview image;
if the method comprises the step of determining the first photographing parameter of the camera module group for acting on the photographed image based on the preview image, the step of determining the first photographing parameter of the camera module group for acting on the photographed image based on the preview image comprises the following steps: generating a first photographing parameter for acting on a camera module of a photographed image based on the brightness parameter of the background area;
if the method includes determining a brightness parameter of the light compensation element for acting on a photographed image based on the preview image, the determining a brightness parameter of the light compensation element for acting on a photographed image based on the preview image includes: and generating the brightness parameter of the light compensation element used for acting on the photographed image based on the brightness parameter of the foreground area.
8. An electronic device, comprising: light compensation component, shooting module and processing element, processing element is used for carrying out:
if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, responding to a shooting instruction, starting a light compensation element, and acquiring and storing a shooting image by utilizing the shooting module based on the light compensation of the light compensation element, wherein the brightness of a first area in the shooting image is improved compared with the brightness of a dark area in a preview image;
wherein the first region corresponds to a dark region in the preview image.
9. The electronic device of claim 8, the camera module comprising a shutter and an inductive coupling element, the processing element further to:
and if the shooting scene of the electronic equipment belongs to a high-light-ratio scene, determining a first shooting parameter of the shutter and the inductive coupling element in the camera module acting on the shooting image based on the preview image so as to reduce the brightness of the shooting image obtained by responding to the shooting instruction.
10. The electronic device of claim 8, the camera module comprising a first image capture element and a second image capture element, the processing element further to:
based on a first preview image acquired by the first image acquisition element and a second preview image acquired by the second acquisition element, distinguishing a foreground region from a background region in the preview image;
the first preview image and the second preview image are preview images generated by the first image acquisition element and the second image acquisition element based on the same shooting scene at the same time, and the first preview image and the second preview image have parallax.
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