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Method and device for color range adjustment

An adjustment method and color gamut technology, applied in the field of image processing, can solve problems such as high system cost and low image brightness, and achieve the effects of ensuring image output quality, improving image brightness, and reducing system cost

Inactive Publication Date: 2011-01-12
HISENSE VISUAL TECH CO LTD
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Problems solved by technology

[0004] In the process of realizing the color output of the above-mentioned three-color light source, the inventor found that there are at least the following problems in the prior art: since only one primary-color light source is outputting at each time point, the brightness of the image is low, and the number of three-color light sources must be increased to Guaranteed image brightness, high system cost

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  • Method and device for color range adjustment

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Embodiment Construction

[0027] The color gamut adjustment method and device according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] The present invention can be applied to single-chip or three-chip projection displays, and can also be applied to LED lighting systems. The present invention can also be applied to backlight TVs, PDAs, computers and other products.

[0029] An embodiment of the color gamut adjustment method of the present invention, such as figure 2 shown, including:

[0030] S201. Acquire an image signal in a unified format from an output image.

[0031] S202. Analyzing the brightness ratio of the three primary color light sources of the output image from the image signal.

[0032] S203. Adjust duty ratios of the three primary colors of a single three-color light source to partially overlap each other according to the luminance ratio of the three-primary-color light sources.

[0033] Set the duty c...

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Abstract

The invention discloses a method and a device for color range adjustment, which relates to the image processing field and aims at solving the problem that the image brightness is low because only one primary-color light source is used for output at each time point in the prior art, and the quantity of tricolor light sources is increased to ensure the image brightness but high system cost can be caused. The method provided by the embodiment of the invention comprises the following steps: acquiring an image signal in a unified format from an output image; analyzing the tricolor light source brightness ratio of the output image from the image signal; adjusting the tricolor duty ratio of single tricolor light sources according to the tricolor light source brightness ratio to realize partial overlapping with each other; and using the tricolor light sources to output the tricolor according to the partial overlapping of the adjusted tricolor duty ratio so as to adjust the color of the image. The invention is applicable to a terminal having a display function.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a color gamut adjustment method and device. Background technique [0002] At present, in the field of projection display, new light sources such as LED and LASER are gradually replacing traditional light sources such as UHP (Ultra High Pressure Mercury Lamp). The use of three-color light sources (LED, laser) has the advantages of rich display colors, adjustable color temperature, and dynamic controllability. Therefore, the research on the control system of the three-color projection light source is also more important. In addition, with the popularity of LCD TVs and the maturity of backlight technology, the application of LED lights has become more and more extensive. How to improve the color output and effective use of LED light sources has become an important issue in the field of energy saving and consumption reduction. [0003] A color output method of an existing three-color...

Claims

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Application Information

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IPC IPC(8): H04N9/64H04N9/31G09G3/20G09G3/36
Inventor 郭大勃陈昱张海翔刘卫东
Owner HISENSE VISUAL TECH CO LTD
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