CN106791451B - Photographing method of intelligent terminal - Google Patents
Photographing method of intelligent terminal Download PDFInfo
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- CN106791451B CN106791451B CN201710113330.5A CN201710113330A CN106791451B CN 106791451 B CN106791451 B CN 106791451B CN 201710113330 A CN201710113330 A CN 201710113330A CN 106791451 B CN106791451 B CN 106791451B
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- photographing
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- intelligent terminal
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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
- H04N23/62—Control of parameters via user interfaces
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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
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
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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
- H04N23/71—Circuitry for evaluating the brightness variation
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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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
Abstract
The invention provides a photographing method of an intelligent terminal, which comprises the following steps: s1, starting the device photographing program; s2, acquiring the brightness value in the selected shooting area and the coordinates of each brightness area; s3, acquiring the difference value between the maximum brightness value and the minimum brightness value in the shooting area; s4, judging whether the difference value is larger than a threshold value; s5, if the difference is larger than the threshold, automatically starting an ISP (Internet service provider), and segmenting AE compensation configuration of the intelligent terminal according to the coordinates of each brightness area; if the difference value is less than or equal to the threshold value, continuing to use a default photographing mode; s6, the photographing is completed. The photographing method can realize automatic adjustment of AE exposure configuration according to the brightness difference in scenes, can realize normal display of images even in scenes with obvious light and shade difference, and meets the requirements of non-professional photographing users on the photographing quality.
Description
Technical Field
The invention relates to the technical field of intelligent terminals, in particular to a photographing method of an intelligent terminal.
Background
At present, a photographing device carried by an intelligent terminal in the market mostly adopts a full automatic exposure mode (AE), that is, an exposure mode of an exposure combination (aperture/shutter) is automatically determined according to the brightness of a subject and the focal length of a lens. However, the AE exposure technique has only one exposure value, and it is difficult to satisfy the exposure requirement when a scene with a large difference in brightness is photographed, such as when a portrait in which dark skin color and light skin color coexist.
An Image Signal Processor (ISP) is a means currently used to handle linear correction, noise removal, dead pixel removal, interpolation, white balance, automatic exposure control, and the like. ISP is essentially a digital circuit solution to the problems of aperture adjustment, shutter setting, negative film printing, etc. The ISP can correct many of the determinations in the shooting process online in time. Depending on the ISP technology, the site details can be well restored under different optical conditions, and the ISP technology can determine the imaging quality of the camera equipment to a great extent.
The invention provides a novel exposure method of photographing equipment by combining with an ISP (internet service provider) technology, and solves the problem that in the prior art, when a scene with large light and shade difference is shot, such as a portrait with dark skin color and light skin color, the AE technology is difficult to meet the exposure requirement.
Disclosure of Invention
The novel intelligent terminal photographing method provided by the invention can automatically calculate the brightness value of the regional picture, and when the brightness difference value is judged to be larger than a certain threshold value, the ISP is started to compensate and segment the AE, so that different exposure degrees of the same picture are realized, and the problem that in the prior art, an over-bright or over-dark image cannot be normally displayed due to large difference of brightness of a photographed scene is solved.
Specifically, the invention provides a photographing method of an intelligent terminal, which comprises the following steps: s1, starting the photographing program of the mobile terminal; s2, acquiring the brightness value in the selected shooting area and the coordinates of each brightness area; s3, acquiring the difference value between the maximum brightness value and the minimum brightness value in the shooting area; s4, judging whether the difference value is larger than a threshold value; s5, if the difference is larger than the threshold, automatically starting an ISP (Internet service provider), and segmenting AE compensation configuration of the intelligent terminal according to the coordinates of each brightness area; if the difference value is less than or equal to the threshold value, continuing to use a default photographing mode; s6, the photographing is completed.
Preferably, a database is disposed in the intelligent terminal and is used for storing the brightness value and the coordinate value obtained in step S2.
Preferably, the photographing region is a face recognition region.
Preferably, the threshold is a brightness value preset in the intelligent terminal.
Preferably, the intelligent terminal is provided with a data processing module for calculating the brightness difference value in different shooting areas and comparing the brightness difference value with the threshold value.
Preferably, the photographing program is a photographing program carried by the intelligent terminal.
Preferably, the photographing program is an application program developed based on an operating system of the intelligent terminal.
Preferably, the intelligent terminal is a digital camera, a tablet computer or a smart phone.
Compared with the prior art, the invention has the technical advantages that:
1) the invention can realize automatic adjustment of AE exposure configuration according to brightness difference in scenes, and can realize normal display of images even in scenes with obvious brightness difference.
2) The invention can automatically adjust the exposure configuration of the intelligent terminal and meet the requirements of non-professional photography users on the photographic image quality.
Drawings
Fig. 1 is a flowchart of a photographing method of an intelligent terminal according to a preferred embodiment of the present invention.
Detailed Description
The advantages of the invention are described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a flowchart of a photographing method of an intelligent terminal according to a preferred embodiment of the present invention. As can be seen from the figure, the embodiment provides a photographing method for an intelligent terminal, which specifically includes the following steps:
s1, starting the photographing program of the mobile terminal; when a user needs to take a picture, a shooting button can be selected from a shortcut icon or a shortcut pull-down menu of the desktop of the intelligent terminal, and a shooting program is started.
Preferably, the photographing program may be a photographing program carried by the intelligent terminal itself, or may also be an application program developed based on an operating system of the intelligent terminal.
S2, acquiring the brightness value in the selected shooting area and the coordinates of each brightness area; after the intelligent terminal enters a photographing program, the system automatically acquires the brightness value/coordinate value in the photographing scene selected by the user, correspondingly acquires the coordinate value/brightness value corresponding to the brightness value, and feeds back the acquired brightness value and the coordinate value corresponding to the brightness value to the terminal. For example, the system may first detect a face and obtain position information, i.e., coordinate values, corresponding to the face, and feed back the coordinate values of the face position to the intelligent terminal, and the system obtains a brightness value Y of each face region in the scene according to the position data, and feeds back the value Y and the coordinate values corresponding to the value Y to the intelligent terminal.
Preferably, a database is provided in the intelligent terminal in this embodiment, and is used to store the brightness value and the coordinate value obtained in step S2, and the terminal may automatically extract corresponding data from the database during the photographing process.
S3, acquiring the difference value between the maximum brightness value and the minimum brightness value in the shooting area; and after receiving the brightness value of the brightness condition in the response scene, the intelligent terminal automatically counts and calculates the difference value delta Y between the maximum brightness value and the minimum brightness value in the scene.
Preferably, the intelligent terminal in this embodiment is further provided with a data processing module, which can read the brightness value in the shot picture and calculate the brightness difference in different shooting areas by relying on a mathematical computation system thereof.
S4, judging whether the difference value is larger than a threshold value; and the intelligent terminal automatically compares the brightness difference value delta Y in the scene calculated by the system with a brightness threshold value. In this embodiment, the data processing module provided in the intelligent terminal may further compare the calculated brightness difference values in different shooting areas with the threshold.
Preferably, the threshold used in this embodiment is a brightness value preset in the intelligent terminal according to the brightness recognition capability of human eyes.
S5, according to the comparison result in the step S4, if the difference is larger than the threshold value, the terminal automatically starts an ISP to process the image data, divides the AE compensation configuration of the intelligent terminal according to the brightness distribution of each area, and configures corresponding AE compensation intensity for each brightness area according to the corresponding coordinate of the brightness area; and if the difference value is less than or equal to the threshold value, continuing to use the default photographing mode.
And S6, finishing photographing, and obtaining a picture for better restoring the site details even under different optical conditions based on the setting.
Preferably, the intelligent terminal mentioned in this embodiment may be an intelligent device which is provided with a data processing module and can realize a photographing function, such as a digital camera, a tablet computer, or a smart phone.
In summary, it can be seen that the present invention can realize automatic adjustment of AE exposure configuration according to brightness difference in a scene, and can realize normal display of an image even in a scene with a significant light-dark difference; meanwhile, the exposure configuration of the intelligent terminal is automatically adjusted, so that the requirements of non-professional photographing users on the photographing image quality are met.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (8)
1. A photographing method of an intelligent terminal is characterized by comprising the following steps:
s1, starting the photographing program of the mobile terminal;
s2, acquiring the brightness value in the selected shooting area and the coordinate value of each brightness area;
s3, acquiring the difference value between the maximum brightness value and the minimum brightness value in the shooting area;
s4, judging whether the difference value is larger than a threshold value;
s5, if the difference is larger than the threshold, automatically starting an ISP (Internet service provider), segmenting the AE compensation configuration of the intelligent terminal according to the brightness distribution of each area, and configuring corresponding AE compensation intensity according to the corresponding coordinate value of each brightness area; if the difference value is less than or equal to the threshold value, continuing to use a default photographing mode;
s6, the photographing is completed.
2. The photographing method of claim 1, wherein a database is provided in the intelligent terminal for storing the brightness value and the coordinate value acquired in step S2.
3. The photographing method according to claim 1, wherein the photographing region is a face recognition region.
4. The photographing method of claim 1, wherein the threshold is a brightness value previously set in the smart terminal.
5. The photographing method of claim 1, wherein the intelligent terminal has a data processing module for calculating a brightness difference value in different photographing regions and comparing it with the threshold value.
6. The photographing method of claim 1, wherein the photographing program is a photographing program carried by the intelligent terminal itself.
7. The photographing method of claim 1, wherein the photographing program is an application program developed based on an operating system of the smart terminal.
8. The photographing method of claim 1, wherein the smart terminal is a digital camera, a tablet computer or a smart phone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710113330.5A CN106791451B (en) | 2017-02-28 | 2017-02-28 | Photographing method of intelligent terminal |
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| CN201710113330.5A CN106791451B (en) | 2017-02-28 | 2017-02-28 | Photographing method of intelligent terminal |
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| CN106791451B true CN106791451B (en) | 2020-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107155063B (en) * | 2017-06-19 | 2020-10-20 | 深圳市泰衡诺科技有限公司上海分公司 | Night scene shooting control method, system and equipment |
| CN108040209B (en) * | 2017-12-20 | 2019-12-13 | 维沃移动通信有限公司 | Shooting method and mobile terminal |
| CN108683859A (en) * | 2018-08-16 | 2018-10-19 | Oppo广东移动通信有限公司 | It takes pictures optimization method, device, storage medium and terminal device |
| CN109727212B (en) * | 2018-12-24 | 2021-05-04 | 维沃移动通信有限公司 | Image processing method and mobile terminal |
| CN117560552A (en) * | 2024-01-10 | 2024-02-13 | 荣耀终端有限公司 | Shooting control method, electronic device and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101340523A (en) * | 2008-08-14 | 2009-01-07 | 北京中星微电子有限公司 | Method and apparatus for exposure compensating digital image |
| CN104853110A (en) * | 2015-04-30 | 2015-08-19 | 广东欧珀移动通信有限公司 | Flash lamp control method and terminal |
| CN105657289A (en) * | 2016-03-28 | 2016-06-08 | 广东欧珀移动通信有限公司 | Control method and device and electronic device |
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| KR100510144B1 (en) * | 2003-08-04 | 2005-08-25 | 삼성전자주식회사 | Method for compensating difference of screen from burn-in effects on screen of display device and device thereof |
| KR100590529B1 (en) * | 2003-11-04 | 2006-06-15 | 삼성전자주식회사 | Method and apparatus for enhancing local luminance of image, and computer-readable recording media for storing computer program |
| KR100809349B1 (en) * | 2006-09-25 | 2008-03-05 | 삼성전자주식회사 | Apparatus and method for compensating brightness of image |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340523A (en) * | 2008-08-14 | 2009-01-07 | 北京中星微电子有限公司 | Method and apparatus for exposure compensating digital image |
| CN104853110A (en) * | 2015-04-30 | 2015-08-19 | 广东欧珀移动通信有限公司 | Flash lamp control method and terminal |
| CN105657289A (en) * | 2016-03-28 | 2016-06-08 | 广东欧珀移动通信有限公司 | Control method and device and electronic device |
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