Patent ID: 6501563
Filing Date: 2002-12-31
Classification: G06T,H04N

Abstract:
An image processing apparatus comprising:judgement means for inputting input image signals of n color components (n is a positive integer not less than three) forming colors of a plurality of image pixels transferred from an external device in time series, for calculating a synthesis signal value of a target image pixel per input color component in said input image signals by performing a division of a sum of signal strength values of said input image signals about said target image pixel by a value of the n-th power of 2, and for calculating a synthesis signal value of reference image pixels per color component in said input image signals by performing a division of a sum of signal strength values of said input image signals about said reference image pixels adjacent to said target image pixel by using the value of the n-th power of 2, for calculating a ratio of said synthesis signal values of each reference image pixel and said target image pixel per reference image pixel, and for calculating a conversion parameter indicating a change rate of signal strength values of said input image signals per color component based on a total sum of said ratios of said synthesis values; and conversion means for converting said input image signals to output image signals without a change of a ratio of signal strength values between said input image signals per n-color component based on said conversion parameter per color component obtained by said judgement means.