Patent ID: 8120678

Claim:
A method for eliminating image noise, comprising: taking an image of a uniform light source; sequentially recording exposure values by pixels of an image sensor; calculating a sum of the exposure values of each channel in each line, wherein the channel is one selected from an R channel, a G R channel, a G B channel, and a B channel; calculating an average of the sum of exposure values of each channel and another sum of the exposure values of several adjacent channels in each line; obtaining a channel compensation value for each channel in each line from a difference between the average and the sum of exposure values of pixels of each channel in each line; obtaining a compensation average for each pixel with equivalent channel in each line by dividing the channel compensation value by a pixel number of each channel in each line, wherein the compensation average has a first part and a second part; obtaining a pixel compensation value for each pixel by allotting the first part and the second part of the compensation average; performing a shift process which shifts a target value of the compensation for each pixel for benefiting calculation; performing a tone shift for the image sensor for calibrating color aberration after the shift process; and recording the pixel compensation value for each pixel for compensating the exposure value as photographing.