Rapid white balance method for color digital images
AssigneeDestiny Technology Corporation
InventorsYi-Shen Xia, Po-Chiang Yeh, Rui-Jing Dong
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Abstract
A rapid white balance method for color digital image is disclosed. This method is applied to RGB color regions in an image. First, the image is divided into several blocks to obtain the G parameter, then the averaged R and B parameters of each block, thereby obtaining the R and B parameters of the whole image. Using the R and B parameters, the method obtains an R gain and a B gain. Finally, the image is adjusted. The method only uses one RGB value for each pixel. The processing time is reduced, while the quality of the image is increased.
Claims19
A rapid white balance method for processing a color digital image applied to an RGB color space of the image, the method comprising the steps of:
- dividing the image into a plurality of blocks to obtain a reference G parameter, Gref;
- obtaining an averaged R value, Rsavg, and an averaged B value, Bsavg, of each of the blocks according to the division;
- computing a reference R parameter, Rref, and a reference B parameter, Bref, according to the averaged R value and the averaged B value of each block;
- computing a R gain, Rgain, and a B gain, Bgain, from the reference R parameter and the reference B parameter;
- and
- adjusting the image according to the R gain and the B gain.
Dependencies are inferred from the claim text.