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Chroma enhancing system and method

A technology for enhancing system and chromaticity, applied in the field of television, can solve the problem that image chromaticity enhancement cannot meet the requirements of TV images, and achieve the effect of improving pertinence and adjustment accuracy

Active Publication Date: 2009-08-12
上海顺久电子科技有限公司
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  • Application Information

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Problems solved by technology

[0007] The problem solved by the present invention is that the chromaticity enh

Method used

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  • Chroma enhancing system and method

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Embodiment Construction

[0026] refer to figure 2 As shown, one embodiment of the chroma enhancement system of the present invention may include:

[0027] The color detection unit 1, based on the built-in custom color degree system, calculates the corresponding color angle value for the U and V values ​​of the obtained image signal;

[0028] The saturation adjustment unit 2 calculates a corresponding saturation adjustment ratio according to the color angle value obtained by the color detection unit, and performs saturation adjustment on the image signal;

[0029] The hue adjustment unit 3 calculates the corresponding hue adjustment angle according to the color angle value obtained by the color detection unit, and adjusts the hue of the image signal,

[0030] Wherein, the self-defining color degree system includes several colors, each color has a self-defining central value, and the self-defining central value is extended to a larger angle and a smaller angle to form a color gamut of the color. The ...

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Abstract

The invention provides a system and a method for increasing chromaticity. The chromaticity-increasing method comprises the following steps that: a color-degree self-defining system is established; the color-degree self-defining system comprises a plurality of colors; each color has a self-defined central value; the self-defined central value is subjected to self-defined extension towards a larger angle and a smaller angle so as to form the color gamut of the color; the sum of the angles of the color gamut is 360 degrees; based on the color-degree self-defining system, the value of a color angle corresponding to the U and V values of an obtained image signal is calculated; according to the obtained value of the color angle, the corresponding proportion of saturation adjustment is calculated so as to adjust the saturation of the image signal; and according to the obtained value of the color angle, the corresponding angle of tone adjustment is calculated so as to adjust the tone of the image signal after saturation adjustment. The system and the method for increasing chromaticity have the advantages of meeting the requirements of different users on TV images better and improving the effect of increasing chromaticity.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a chroma enhancement system and method in television signal processing. Background technique [0002] Traditional analog television broadcasting systems mainly include National Television Standards Committee (NTSC, National Television Standards Committee) system and Phase Alternating Line (PAL, Phase Alternating Line) system. Among them, the NTSC system is mainly used in Japan, the United States, Canada, etc., and its field frequency is 60 fields per second, while the PAL system is mainly used in Western European countries, China, New Zealand, etc., and its field frequency is 50 fields per second. In addition, PAL is sometimes used to refer to the interlaced television system. [0003] At present, the interlaced scanning TV system is used to solve the problem that the progressive scanning TV system cannot process high frame rate TV signals due to bandwidth limitations. An in...

Claims

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Application Information

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IPC IPC(8): H04N9/68
Inventor 张杰德张圣德王江
Owner 上海顺久电子科技有限公司