CN104050948A - Display method and system capable of automatically increasing image contrast - Google Patents
Display method and system capable of automatically increasing image contrast Download PDFInfo
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- CN104050948A CN104050948A CN201410285484.9A CN201410285484A CN104050948A CN 104050948 A CN104050948 A CN 104050948A CN 201410285484 A CN201410285484 A CN 201410285484A CN 104050948 A CN104050948 A CN 104050948A
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Abstract
The invention discloses a display method and system capable of automatically increasing the image contrast. The method comprises the steps that through image processing, the brightness of images is extracted and a brightness histogram is generated; according to the brightness range of the images, an image processing module conducts segment processing on the brightness histogram; a light sensing element detects the environment brightness and feeds back the environment brightness to an environment brightness processing module, and the environment brightness processing module generates external light source parameters and transmits the external light source parameters to the image processing module; the image processing module generates adjusting parameters according to the external light source parameters and the brightness range and conducts adjustment on the brightness of the images according to the adjusting parameters. By means of the method and system, the contrast of the images can be adjusted dynamically to enable the images to be more adapted to the external environment brightness. Moreover, the power consumption is low and the hardware cost cannot be increased.
Description
Technical field
The present invention relates to image processing method, relate in particular to a kind of method that automatically strengthens picture contrast demonstration based on external light source brightness.
Background technology
LCDs has been applied to various portable mobile apparatus on a large scale at present, conventionally people can easily see the content in LCDs clearly indoor, but arrive the place of sun-drenched open air or sunlight deficiency, originally the LCDs that can see clearly can seem one black, be difficult to see clearly content above.In order to see content above clearly, conventionally all allow people adopt the backlight of adjustable liquid crystal display display screen to solve.But adjust and backlightly can not meet all different lightness environment.Meanwhile, if blast is backlight, can greatly increase the power consumption of mobile device, in being inconvenient to charge, cause shorten the service time of mobile device.
Backlight except increasing, hardware, software manufacturer also can process for displaying contents, and at present displaying contents mainly adopts YCBCR, and YCBCR is the one of color space, have and the consistance of people's visually-perceptible, and brightness and the separate feature of colourity.The principle of at present YCBCR being carried out to histogram enhancement processing is: by the Y to picture, i.e. histogram processing is carried out in brightness, then reduces in brightness two ends the brightest, the darkest part, promote center section, thereby reach raising contrast, make picture seem object more clearly.But this disposal route can not adapt to different lightness environment, cannot meet people's demand.
Therefore, how providing a kind of low-power consumption, can being adapted to the method that the automatic enhancing picture contrast of varying environment shows is industry technical matters urgently to be resolved hurrily.
Summary of the invention
The object of the invention is in order to solve above-mentioned problems of the prior art, proposed a kind of method that automatic enhancing picture contrast shows, comprise the steps: that image processing module extracts the brightness of picture, generates brightness histogram; Image processing module, according to the brightness range of picture, carries out staging treating to brightness histogram; The brightness of photo-sensitive cell testing environment, and feed back to ambient brightness processing module, ambient brightness processing module generates external light source parameter, passes to image processing module; Image processing module, according to external light source parameter and described brightness range, generates and adjusts parameter, and according to adjusting parameter, the brightness of picture is adjusted.
The present invention also proposes the system that a kind of automatic enhancing picture contrast shows, comprising: photo-sensitive cell, for detection of ambient brightness; Ambient brightness processing module, the ambient brightness detecting for receiving photo-sensitive cell, and computing becomes external light source parameter; Image processing module, the brightness of extracting picture, generates brightness histogram, and according to the brightness range of picture, brightness histogram is carried out to staging treating, then according to external light source parameter, generates and adjust parameter, and the brightness of picture is adjusted.
The present invention according to external environment condition brightness picture is processed, make the electronic equipment can be according to the automatic brightness adjustment contrast of external environment condition, thereby show more clearly, the method is compared to and changes method backlight, power consumption is lower, can meet the demand of mobile device for stand-by time, and adjustment better effects if, and process carefullyyer than existing histogram processing methods, but also can dynamically adjust picture contrast, equipment can clearly be shown under various environment, the present invention is without LCDs is processed, therefore, do not increase hardware cost, can also reduce to a certain extent the cost of overall hardware device, meet the demand of user to cost control.
Brief description of the drawings
Below, the present invention is described in detail for contrast accompanying drawing and preferred embodiment, wherein:
Fig. 1 is workflow diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, invention is described in detail.Should be appreciated that the only technical scheme in order to explain that the present invention proposes of the explanation of specific embodiment, and non-limiting the present invention.
As shown in Figure 1, the method that the automatic enhancing picture contrast that embodiments of the invention propose shows, mainly comprises the steps:
The brightness of first being extracted picture by image processing module, generates brightness histogram;
Image processing module, according to the brightness range of picture, carries out staging treating to brightness histogram; The brightness of photo-sensitive cell testing environment, and feed back to ambient brightness processing module, ambient brightness processing module generates external light source parameter, passes to image processing module;
Image processing module, according to external light source parameter and described brightness range, generates and adjusts parameter, and according to adjusting parameter, the brightness of picture is adjusted.
The invention allows for the system that automatic enhancing picture contrast shows, mainly by being located at the photo-sensitive cell on portable mobile apparatus shell, ambient brightness processing module and image processing module three parts of being located in equipment form.Wherein, photo-sensitive cell can detect the brightness of external environment condition, ambient brightness processing module receives the ambient brightness that photo-sensitive cell detects, and computing becomes external light source parameter, the brightness of image processing module extraction picture, generate brightness histogram, and according to the brightness range of picture, brightness histogram is carried out to staging treating, then according to external light source parameter, generate and adjust parameter, the brightness of picture is adjusted.
Above specific embodiment is only in order to illustrate structure of the present invention, and those of ordinary skill in the art can make various deformation and variation under design of the present invention, and these distortion and variation include within protection scope of the present invention.
Claims (2)
1. automatically strengthen the method that picture contrast shows, it is characterized in that, comprise the steps:
Image processing module extracts the brightness of picture, generates brightness histogram;
Image processing module, according to the brightness range of picture, carries out staging treating to brightness histogram;
The brightness of photo-sensitive cell testing environment, and feed back to ambient brightness processing module, ambient brightness processing module generates external light source parameter, passes to image processing module;
Image processing module, according to external light source parameter and described brightness range, generates and adjusts parameter, and according to adjusting parameter, the brightness of picture is adjusted.
2. automatically strengthen the system that picture contrast shows, it is characterized in that, comprising:
Photo-sensitive cell, for detection of ambient brightness;
Ambient brightness processing module, the ambient brightness detecting for receiving photo-sensitive cell, and computing becomes external light source parameter;
Image processing module, the brightness of extracting picture, generates brightness histogram, and according to the brightness range of picture, brightness histogram is carried out to staging treating, then according to external light source parameter, generates and adjust parameter, and the brightness of picture is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410285484.9A CN104050948A (en) | 2014-06-24 | 2014-06-24 | Display method and system capable of automatically increasing image contrast |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410285484.9A CN104050948A (en) | 2014-06-24 | 2014-06-24 | Display method and system capable of automatically increasing image contrast |
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| CN104050948A true CN104050948A (en) | 2014-09-17 |
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| CN201410285484.9A Pending CN104050948A (en) | 2014-06-24 | 2014-06-24 | Display method and system capable of automatically increasing image contrast |
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Cited By (3)
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| CN107358572A (en) * | 2017-07-12 | 2017-11-17 | 杭州字节信息技术有限公司 | A kind of ambient light adaptive approach of modified based on tactical information terminal |
| WO2018076167A1 (en) * | 2016-10-25 | 2018-05-03 | 深圳市大疆创新科技有限公司 | Screen brightness adjustment method applicable to unmanned aerial vehicle control side, and unmanned aerial vehicle control side |
| CN113628137A (en) * | 2021-08-03 | 2021-11-09 | 武汉三江中电科技有限责任公司 | Image enhancement algorithm and device under insufficient light environment |
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| TW200839708A (en) * | 2007-03-30 | 2008-10-01 | Novatek Microelectronics Corp | Contrast control apparatus and contrast control method and image display |
| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
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| US20060077304A1 (en) * | 2004-10-08 | 2006-04-13 | Mstar Semiconductor, Inc. | Method and device for image contrast enhancement |
| CN1770254A (en) * | 2004-10-15 | 2006-05-10 | 创世纪微芯片公司 | Method for generating transfer curves for adaptive contrast enhancement |
| CN101076087A (en) * | 2006-05-17 | 2007-11-21 | 索尼株式会社 | Image correction circuit, image correction method and image display |
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| CN101620819A (en) * | 2009-06-25 | 2010-01-06 | 北京中星微电子有限公司 | Dynamic regulation method and dynamic regulation device for displaying image back light brightness, and moving display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018076167A1 (en) * | 2016-10-25 | 2018-05-03 | 深圳市大疆创新科技有限公司 | Screen brightness adjustment method applicable to unmanned aerial vehicle control side, and unmanned aerial vehicle control side |
| CN107358572A (en) * | 2017-07-12 | 2017-11-17 | 杭州字节信息技术有限公司 | A kind of ambient light adaptive approach of modified based on tactical information terminal |
| CN113628137A (en) * | 2021-08-03 | 2021-11-09 | 武汉三江中电科技有限责任公司 | Image enhancement algorithm and device under insufficient light environment |
| CN113628137B (en) * | 2021-08-03 | 2024-04-16 | 武汉三江中电科技有限责任公司 | Image enhancement algorithm and device under light deficient environment |
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Application publication date: 20140917 |
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