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Method and system for regulating image chromaticity

A chromaticity and image technology, applied in the field of adjusting image chromaticity, can solve problems such as large amount of calculation, high consumption of resources, complicated process, etc., and achieve the effect of improving efficiency and saving computing resources.

Active Publication Date: 2009-01-28
北京中星天视科技有限公司
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Problems solved by technology

[0005] Since the conversion calculation between RGB and YUV needs to occupy relatively large computing resources, and the above-mentioned processing process requires multiple conversion calculation processes, the process of adjusting image chromaticity using the above-mentioned prior art is complicated, the amount of calculation is large, and resource consumption is large. many

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  • Method and system for regulating image chromaticity

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Embodiment Construction

[0036] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] refer to figure 1 , showing an embodiment of a method for adjusting image chromaticity, which can be used to adjust image chromaticity in display systems such as digital cameras, cameras, and digital televisions, and can specifically include:

[0038] Step 101, preset the relational expression of the RGB value after adjusting the chromaticity of the image and the RGB value before the image adjusted chromaticity, the preset relational expression is converted from RGB to the formula of YUV, the formula of adjusting the image chromaticity, and YUV is converted into RGB The formula is calculated; preferably, the preset relational formula can be expressed in the form of a matrix.

[0039] Step 102, receiving parameters for adju...

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Abstract

The invention provides a method and a system for adjusting image chroma. The method comprises the following: the relational expression of an RGB value after the image chroma is adjusted and an RGB value before the image chroma is adjusted is preset, preset relational expression is obtained by calculating the formula for converting the RGB into YUV, the formula for adjusting the image chroma, and the formula for converting the YUV to the RGB; the parameter for adjusting the image chroma is received; aiming at the RGB value of the image to be adjusted, the parameter is substituted to the presetrelational expression, the RGB value after the chroma is adjusted is obtained by calculation; the RGB value after the image chroma is adjusted is outputted to finish the adjustment of the image chroma. When the image chroma is adjusted, because the converting process of the RGB and the YUV consumes resources, while the conversion needed in each time of adjustment in the prior art is simplified toone time of conversion, therefore, the method and the system greatly save the calculation resources and improve the efficiency of adjusting the chroma.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and system for adjusting image chromaticity. Background technique [0002] The most common use of the RGB (red, green, blue) color space is the display system. For example, color cathode ray tubes, color raster graphics displays, etc. all use R, G, and B values ​​​​to drive R, G, and B electron guns to emit electrons. The fluorescent powders of R, G, and B on the fluorescent screen are respectively excited to emit light of different brightness, and various colors are produced by addition and mixing. The scanner also absorbs the R, G, and B components of the light sent by the original through reflection or transmission, and uses it to represent the color of the original. [0003] YUV (also known as YCrCb) is a color coding method adopted by the European television system, where Y stands for brightness, UV stands for chroma (Chrominance or Chroma), and chroma defines two a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/60H04N9/64
Inventor 卢虹王浩
Owner 北京中星天视科技有限公司
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