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Method and device for realizing fast color correction
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A color correction and fast technology, applied in the field of video and image processing, can solve the problems of inaccurate correction results, overflow of RGB values, waste of system resources, etc., to ensure the continuity of RGB values, fast color correction, and achieve the effect of color correction
Inactive Publication Date: 2012-10-24
CHINA DIGITAL VIDEO BEIJING
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[0005] Since the RGB component range of the image is 0-255, when the color correction is performed step by step according to the selected color correction item, the RGB value overflow phenomenon will occur. If there are multiple color corrections, the final correction result will be inaccurate;
[0006] Moreover, the item-by-item calculation of multiple color corrections wastes system resources and is inefficient
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Embodiment 1
[0031] Embodiment of the present invention - a method for realizing fast color correction, such as figure 1 shown, including the following steps:
[0032] Step S101, obtaining the original RGB value of the image;
[0033] Step S102, acquiring at least one color correction parameter of the image;
[0034] Step S103, obtaining a corresponding color correction formula according to the at least one color correction parameter;
[0035] Step S104, generating corrected RGB values of the image according to the original RGB values and the color correction formula corresponding to the at least one color correction parameter.
[0036] The acquisition of at least one color correction parameter of the image includes:
[0037] Dark area, gray area, HSL middle of bright area, bright area, dark area saturation, overall boost, gain, Gamma RGB boost, Gamma RGB gain, Gamma film exposure factor, exposure value of RGB component, RGB curve and brightness adjustment curve , to obtain at leas...
Embodiment 2
[0045] Embodiment 2 of the present invention is a method for realizing fast color correction, such as figure 2 shown, including:
[0046] The acquiring unit 201 is configured to acquire the original RGB value of the image; and is also configured to acquire at least one color correction parameter of the image;
[0047] A color correction formula acquiring unit 202, configured to acquire a corresponding color correction formula according to the at least one color correction parameter;
[0048] The color correction unit 203 is configured to generate corrected RGB values of the image according to the original RGB values and the color correction formula corresponding to the at least one color correction parameter.
[0049] The acquisition of at least one color correction parameter of the image includes:
[0050] Dark area, gray area, HSL middle of bright area, bright area, dark area saturation, overall boost, gain, Gamma RGB boost, Gamma RGB gain, Gamma film exposure factor,...
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Abstract
The embodiment of the invention discloses a method and a device for realizing fast color correction. The method comprises the following steps of obtaining the original RGB (red, green and blue) value of images; obtaining at least one color correcting parameters of the images; obtaining a corresponding color correcting formula according to at least one color correcting parameter; and generating the image correcting RGB value according to the original RGB value and the color correcting formula corresponding to at least one color correcting parameter. In the embodiment of the method and the device, the color correcting parameters are calculated in a unified way, in addition, the floating point calculation is adopted, the fast color correction is realized, and in addition, the continuity of the RGB value after the color correction is ensured.
Description
technical field [0001] The invention relates to the technical field of video and image processing, in particular to a method and device for realizing fast color correction. Background technique [0002] The RGB (red, green, blue) color space is a common color space in computers, which generates other colors by adding the three primary colors of red, green, and blue. Among them, RGB24 uses 24 bits to represent the color of a pixel, and red, green, and blue each occupy 8 bits, and 256*256*256 colors can be obtained. [0003] In actual work, we need to color correct the image to achieve better results. In the actual image, if it is an RGB24 image, the RGB components use 8 bits to describe the information, and the range of R, G, and B is 0-255. [0004] In the process of realizing the present invention, the inventor finds that the prior art has the following technical problems: [0005] Since the RGB component range of the image is 0-255, when the color correction is performe...
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