CN103019537B - A kind of image preview method and device - Google Patents
A kind of image preview method and device Download PDFInfo
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- CN103019537B CN103019537B CN201210468076.8A CN201210468076A CN103019537B CN 103019537 B CN103019537 B CN 103019537B CN 201210468076 A CN201210468076 A CN 201210468076A CN 103019537 B CN103019537 B CN 103019537B
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Abstract
The present invention is applicable to technical field of mobile terminals, provides a kind of image preview method and device, comprising: comprising: obtain the details area selected in image preview; In the original image of described image preview, extract the image-region with described details area same position, described same position refers to that the position of described details area in described image preview is identical with the position of described image-region in original image; Described image-region is generated in default display box on screen.In embodiments of the present invention, by the screen of the mobile terminal, amplification display is directly carried out to details area, to make user without the need to carrying out the manual adjustments zoom operation of repetition to mobile terminal camera, thus improves user operation efficiency.
Description
Technical field
The invention belongs to technical field of mobile terminals, particularly relate to a kind of image preview method and device.
Background technology
Along with popularizing of mobile terminal camera function, increasing user takes image by mobile terminal, at the moment of different places shooting excellence or the scenery of grace, keeps fine moment so that slowly aftertaste here.Usual user, when taking image, first carries out image preview by the screen of mobile terminal, then presses shutter key and complete the shooting of finding a view.
But, if user need in image preview to details area carry out amplification check time, then need the zoom of manual adjustments mobile terminal camera, when there is different details area, then inevitably manual adjustments zoom repeatedly, the preview effect in full details region can be checked, to take group picture, need manual adjustments zoom, amplify the preview effect of certain member in collective, thus ensure the quality of group picture, if user also needs the preview shooting effect seeing another one member, then need manual adjustments zoom again, complex operation, reduce the operating efficiency of user.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of image preview method, is intended to solve existing user in image preview to details area inspection method complex operation, causes the inefficient problem of user operation.
The embodiment of the present invention is achieved in that a kind of image preview method, comprising:
Obtain the details area selected in image preview;
In the original image of described image preview, extract the image-region with described details area same position, described same position refers to that the position of described details area in described image preview is identical with the position of described image-region in original image;
Described image-region is generated in default display box on screen.
Another object of the embodiment of the present invention is to provide a kind of image preview device, comprising:
Acquiring unit, for obtaining the details area selected in image preview;
Extraction unit, for extracting the image-region with described details area same position in the original image of described image preview, described same position refers to that the position of described details area in described image preview is identical with the position of described image-region in original image;
Generation unit, generates described image-region in the default display box on screen.
In embodiments of the present invention, by the screen of the mobile terminal, amplification display is directly carried out to details area, to make user without the need to carrying out the manual adjustments zoom operation of repetition to mobile terminal camera, thus improves user operation efficiency.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the image preview method that the embodiment of the present invention provides;
Fig. 2 is the structured flowchart of the image preview device that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In embodiments of the present invention, by the screen of the mobile terminal, amplification display is directly carried out to details area, to make user without the need to carrying out the manual adjustments zoom operation of repetition to mobile terminal camera, thus improves user operation efficiency.
Fig. 1 shows the realization flow of a kind of image preview method that the embodiment of the present invention provides, and details are as follows:
In step S101, obtain the details area selected in image preview.
In the present embodiment, camera lens catches image by fixing frame rate, the data of the pixel of original image is preserved in the buffer, and therefrom extraction data carry out image preview on screen.User can select the details area needing to check in image preview, the mode of selection, includes but not limited to that touch-control is selected, button is selected.The figure choosing the display mode of details area to comprise according to presetting shows, and the figure preset includes but not limited to the geometric figure such as star, pentagon, rectangle, square, trapezoidal, parallelogram, circle, trapezoidal, fan-shaped, pentagram.The frame line of figure, includes but not limited to dotted line, solid line.
In addition, obtain details area, Intelligent Recognition can also be carried out in conjunction with recognition of face, using including the region of face as details area, choose, screen demonstrates all details area.
In step s 102, in the original image of image preview, extract the image-region with this details area same position, same position refers to that the position of this details area in this image preview is identical with the position of this image-region in original image.
Due to the resolution of original image and the inconsistent of screen resolution, need matching resampling to realize, the resolution of original image is original resolution, such as, original resolution is the image of 600*600, if when the resolution of screen is 500*500, then need to carry out compression display, namely the neighbor pixel merging viewfinder image meets the resolution requirement of screen, and the image display resolution therefore after compression, compared with the image display resolution of original resolution, exists decline to a certain degree.
As the preferred embodiments of the present invention, in the original image of image preview, extract the image-region with details area same position, comprising:
Obtain the scaling of this image preview, and the scope of this details area and the center at this image preview, this scaling refers to the ratio of the resolution of this image preview and the resolution of original image;
According to scaling, and scope and center, in the original image of this image preview, determine the image-region with this details area same position;
In the present embodiment, in the parameter of picture, obtain scaling, in the screen assembly of system, obtain the scope of the details area that user selects, go out center according to the range computation that user chooses, and obtain the screen coordinate of center.
Screen coordinate is converted to pixel coordinate, the distance at details area edge and image preview edge is generated according to pixel coordinate, the scope of this distance and details area is multiplied by scaling respectively, can determine the center of image-region and the size of image-region in original image respectively.
As an alternative embodiment of the invention, the image-region with details area same position is extracted in the original image of image preview, can when details area be selected, the edge of details area is recorded on backstage, set up a painting canvas simultaneously, point centered by the center of the image preview of screen, image preview carries out amplifying until identical with original image size, obtain the pixel coordinate at details area edge, this pixel coordinate and the image-region pixel coordinate in original image is identical, thus determines the position of image-region in original image.
As an alternative embodiment of the invention, the image-region with details area same position is extracted in the original image of image preview, encode by storing array to the pixel of original image, each pixel storage array distributes a unique mark, this mark and pixel store array one_to_one corresponding, be convenient to size and the position of determining image-region subsequently through the mark in details area, extract the image-region with details area same position.
By above-mentioned steps, extract and the image-region of details area same position in original image, be convenient to follow-uply in default display box, call display, and ensure that the sharpness that image shows.
In step s 103, synthetic image region in the default display box on screen.
In the present embodiment, obtain the resolution of image-region resolution and default display box, according to both resolution determination zoom factors, by zooming in or out algorithm, process the pixel value of original image, the image-region read in this original image stores array, calls storage array, decoding process is carried out to original pixel value, shows in default display box.
As the preferred embodiments of the present invention, obtain and preset the default display position of display box and the predeterminable range of this default display box and details area, according to this default display position and this predeterminable range, synthetic image region in the default display box on screen.Display position includes but not limited to top, below, right, left, and the unit of distance includes but not limited to centimetre.
As the preferred embodiments of the present invention, obtain the real-time resolution presetting display box, according to this real-time resolution, synthetic image region in the default display box on screen.By a control, setup times parameter, recording user operation time, when user to establish in advance show frame carry out zoom operations time, the real-time resolution of this default display box also correspondingly changes, thus carries out different displays to image-region, meets user's checking details area further.
As the preferred embodiments of the present invention, the corresponding default display box of each details area, obtain default the default of display box to put in order, according to this preset put in order, synthetic image region in default display box on screen, presetting puts in order includes but not limited to from top to bottom, from left to right.By being arranged by presetting to put in order by default display box, effectively show details area at screen.Be convenient to user and once check multiple details area.
Fig. 2 shows the structured flowchart of a kind of image preview device that the embodiment of the present invention provides, this device can run on the various terminals possessing camera, include but not limited to mobile phone, pocket computer (PocketPersonalComputer, PPC), palm PC, computing machine, notebook computer, personal digital assistant (PersonalDigitalAssistant, PDA), MP4, MP3 etc.For convenience of explanation, illustrate only part related to the present embodiment.
With reference to Fig. 2, this image preview device comprises:
Acquiring unit 21, obtains the details area selected in image preview.
Extraction unit 22, in the original image of this image preview, extract the image-region with this details area same position, same position refers to that the position of this details area in this image preview is identical with the position of this image-region in original image.
Generation unit 23, synthetic image region in the default display box on screen.
Particularly, described extraction unit 22, comprising:
Obtain subelement 221, obtain the scaling of image preview, and the scope of details area and the center at this image preview, this scaling refers to the ratio of the resolution of this image preview and the resolution of original image.
Determine subelement 222, according to scaling, and scope and this center, in the original image of this image preview, determine the image-region with this details area same position.
Extract subelement 223, in original image, this image-region determined is extracted.
Alternatively, generation unit 22, also for the predeterminable range of the default display position and this default display position and details area that obtain described default display box, according to this default display position and this predeterminable range, synthetic image region in this default display box on screen.
Alternatively, generation unit 22, also puts in order for obtaining the default of default display box, according to this preset put in order, synthetic image region in the default display box on screen.
Alternatively, generation unit 22, also for obtaining the real-time resolution of default display box, according to this real-time resolution, synthetic image region in this default display box on screen.
In embodiments of the present invention, by the screen of the mobile terminal, amplification display is directly carried out to details area, to make user without the need to carrying out the manual adjustments zoom operation of repetition to mobile terminal camera, thus improves user operation efficiency.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection size of the present invention.
Claims (10)
1. an image preview method, is characterized in that, comprising:
Obtain the details area selected in image preview;
In the original image of described image preview, extract the image-region with described details area same position, described same position refers to that the position of described details area in described image preview is identical with the position of described image-region in original image;
Described image-region is generated in default display box on screen;
Wherein, generate described image-region in described default display box on screen, be specially:
Obtain the resolution of image-region resolution and default display box, according to both resolution determination zoom factors, by zooming in or out algorithm, the pixel value of original image is processed, the image-region read in this original image stores array, call storage array, decoding process is carried out to original pixel value.
2. method as claimed in claim 1, is characterized in that, describedly in the original image of described image preview, extracts the step with the image-region of described details area same position, is specially:
Obtain the scaling of described image preview, and the scope of described details area and center, described scaling refers to the ratio of the resolution of described image preview and the resolution of original image;
According to described scaling, and the scope of described details area and described center, in the original image of described image preview, determine the image-region with described details area same position;
In described original image, the described image-region determined is extracted.
3. method as claimed in claim 1, is characterized in that, generate described image-region, comprising in described default display box on screen:
Obtain the default display position of described default display box and the predeterminable range of described default display position and details area, according to described default display position and described predeterminable range, in described default display box on the screen, generate described image-region.
4. method as claimed in claim 1, is characterized in that, generate described image-region, also comprise in described default display box on screen:
Obtain the real-time resolution of described default display box, according to described real-time resolution, in described default display box on the screen, generate described image-region.
5. method as claimed in claim 1, is characterized in that, generate described image-region, also comprise in described default display box on screen:
Obtain described the default of default display box to put in order, put in order according to described presetting, in described default display box on the screen, generate described image-region.
6. an image preview device, is characterized in that, comprising:
Acquiring unit, for obtaining the details area selected in image preview;
Extraction unit, for extracting the image-region with described details area same position in the original image of described image preview, described same position refers to that the position of described details area in described image preview is identical with the position of described image-region in original image;
Generation unit, generates described image-region in the default display box on screen;
Wherein, generate described image-region in described default display box on screen, be specially:
Obtain the resolution of image-region resolution and default display box, according to both resolution determination zoom factors, by zooming in or out algorithm, the pixel value of original image is processed, the image-region read in this original image stores array, call storage array, decoding process is carried out to original pixel value.
7. device as claimed in claim 6, it is characterized in that, described extraction unit, comprising:
Obtain subelement, for obtaining the scaling of described image preview, and the scope of described details area and center, described scaling refers to the ratio of the resolution of described image preview and the resolution of original image;
Determine subelement, for according to described scaling, and the scope of described details area and described center, in the original image of described image preview, determine the image-region with described details area same position;
Extract subelement, for extracting the described image-region determined in described original image.
8. device as claimed in claim 6, it is characterized in that, described generation unit, also for the predeterminable range of the default display position and described default display position and details area that obtain described default display box, according to described default display position and described predeterminable range, in described default display box on the screen, generate described image-region.
9. device as claimed in claim 6, is characterized in that, described generation unit, also for obtaining the real-time resolution of described default display box, according to described real-time resolution, generating described image-region in described default display box on the screen.
10. device as claimed in claim 6, is characterized in that, described generation unit, also putting in order for obtaining described the default of default display box, puts in order, generate described image-region in described default display box on the screen according to described presetting.
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| CN201210468076.8A CN103019537B (en) | 2012-11-19 | 2012-11-19 | A kind of image preview method and device |
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| CN201210468076.8A CN103019537B (en) | 2012-11-19 | 2012-11-19 | A kind of image preview method and device |
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| CN103513879B (en) * | 2013-04-26 | 2017-10-24 | 展讯通信（上海）有限公司 | Touch control device and its display control method and device |
| JP6659090B2 (en) * | 2014-08-11 | 2020-03-04 | キヤノン株式会社 | Information processing apparatus, control method for information processing apparatus, and computer program |
| US10175264B2 (en) * | 2014-11-21 | 2019-01-08 | Shimadzu Corporation | Data display processing device, data display processing method and control program for scanning probe microscope |
| CN106464799A (en) * | 2015-03-27 | 2017-02-22 | 华为技术有限公司 | Automatic zooming method and device |
| CN107547727B (en) * | 2016-06-24 | 2020-12-29 | 中兴通讯股份有限公司 | Image preview method and device |
| CN107645628B (en) * | 2016-07-21 | 2021-08-06 | 中兴通讯股份有限公司 | Information processing method and device |
| CN106161945A (en) * | 2016-08-01 | 2016-11-23 | 乐视控股（北京）有限公司 | Take pictures treating method and apparatus |
| CN106293589B (en) * | 2016-08-31 | 2019-04-12 | 宇龙计算机通信科技(深圳)有限公司 | A kind of method, apparatus and terminal that preview resolution is set |
| CN106612396B (en) * | 2016-11-15 | 2020-06-16 | 努比亚技术有限公司 | Photographing device, terminal and method |
| CN110896451B (en) * | 2019-11-20 | 2022-01-28 | 维沃移动通信有限公司 | Preview picture display method, electronic device and computer readable storage medium |
| CN110941375B (en) * | 2019-11-26 | 2023-09-05 | 腾讯科技（深圳）有限公司 | Method, device and storage medium for locally amplifying image |
| CN112764650B (en) * | 2021-01-29 | 2022-08-23 | 久瓴(江苏)数字智能科技有限公司 | Graph scaling method and device, electronic equipment and storage medium |
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