White balance regulation device and white balance regulation method

Abstract

The invention provides a white balance regulation method, comprising the following steps: acquiring an initial distribution proportion of white balance reference points of each light source under the current environment; detecting an exposure factor of the current environment, and judging type of the current environment; according to the type of the current environment, inquiring a preset weight regulation table to obtain a weight value of each light source of the current environment; and according to the weight value of each light source of the current environment, regulating the initial distribution proportion to obtain a final white balance parameter. According to the device and the method provided by the invention, by means of acquiring the initial distribution proportion of the white balance reference points of each light source under the current environment, further judging the type of the current environment according to the exposure factor of the current environment and inquiring the weight regulation table according to the type of the current environment, the weight value of each light source is obtained. Finally, the initial distribution proportion is regulated according to the weight value of each light source, and the final white balance parameter is obtained, thereby, interference on calculation of the final white balance caused by erroneous judgment to the environment type is eliminated directly, and the aim of optimizing the white balance reference points is achieved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, and in particular to a white balance adjustment device and method. Background technique [0002] White balance (white balance) is an important indicator of the camera's red, green, and blue primary colors to generate white accuracy. At present, both mobile phone cameras and SLRs support automatic white balance adjustment, which has high requirements for the accuracy and timeliness of camera white balance. An important factor affecting white balance is the color temperature of the current environment, for example, A, H, TL84, D65, D50, etc. represent different color temperature values. From the perspective of camera debugging, you can accurately adjust the white balance parameters under different color temperatures under the light box, namely red gain (R-gain), blue gain (B-gain) and green gain (G-gain). The camera will also show the best white balance effect under the light box, bu...

AI Technical Summary

Problems solved by technology

Under normal circumstances, this method can meet the white balance calculation requirements, but there may be ISP estimation errors or deviations from the actual situation (usually at the junction of the two color temperatures), resulting in certain differences in the actual white balance. error, causing the overall color cast of the picture

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