Method, device, system and computer device for white balance gain correction
A technology of gain correction and white balance algorithm, which is applied in the field of image processing, can solve the problems of low accuracy of results, and achieve the effect of improving accuracy and reliability, and the purpose and advantages are concise and easy to understand
Active Publication Date: 2022-03-01
ZHEJIANG DAHUA TECH CO LTD
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[0005] Embodiments of the present application provide a white balance gain correction method, device, system, computer device, and computer-readable storage medium, so as to at least solve the problem in the related art by calculating the white balance of each white block in the scene of mixed light sources. Weight, the problem of low accuracy of the result of white balance adjustment for the entire image
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[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0047] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. In addition, it can also be understood that although such development efforts may be complex and lengthy, for those of or...
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The present application relates to a white balance gain correction method, device, system and computer equipment, wherein the white balance gain correction method includes: dividing the target image into multiple color temperature regions according to the color temperature of each pixel in the target image, Select the color temperature area where the number of white blocks reaches the preset condition as the calibration reference area, obtain the number of white blocks in the calibration reference area, obtain the gain confidence based on the number of white blocks and the total number of white blocks, and obtain the preset gain according to the preset white balance algorithm coefficient and the weight of the correction reference area, in the case that the gain confidence and weight meet the correction conditions, according to the reference gain coefficient, the preset gain coefficient and the gain confidence, the target image is corrected for white balance gain, which solves the problem in the related art In the scene of mixed light sources, by calculating the white balance weight of each white block, the accuracy of the white balance adjustment of the entire image is low, and the accuracy and reliability of the white balance gain correction are improved.
Description
technical field [0001] The present application relates to the technical field of image processing, in particular to a method, device, system and computer device for white balance gain correction. Background technique [0002] Due to the different spectral characteristics of different light sources, objects appear in different hues under different color temperatures of light. The higher the color temperature of the light source, the bluer the object, and the lower the color temperature of the light source, the more yellowish the object. Therefore, it is necessary to perform white balance correction on images captured by the camera under light sources with different color temperatures. The white scene has the same reflection on the three channels of red, green and blue, so the values of the three channels of red, green and blue in the white scene are equal, so the color cast caused by light sources with different color temperatures can be corrected based on white. For examp...
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IPC IPC(8): H04N9/73
CPCH04N23/88
Inventor 方震东
Owner ZHEJIANG DAHUA TECH CO LTD