IMAGING SIGNAL PROCESSOR

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PROBLEM TO BE SOLVED : To suppress color slurring or color noise in edge portions of R, G and B signals outputted from a sensor unit, and further, to improve the sense of resolution in the edge portions or to take false color measures. SOLUTION : In an image pickup signal processor, a wavelength demultiplexing means for demultiplexing wavelengths of light is disposed on the front face of a photoelectric converting element for converting an optical signal into an electron. And a color signal is processed which is generated by separating an optical signal into at least R, G and B components by a sensor unit, wherein pixels are disposed in a two-dimensional manner. Within a predetermined pixel array that includes one pixel at a certain position of the sensor unit 111 and a plurality of pixels surrounding the one pixel, the color signal of the center pixel and the color signals of the plurality of surrounding pixels are added to produce a first addition signal S. An S contour signal is then produced from signals previous to addition, and this is added to the first addition signal to produce a second addition signal Sa. Ratio coefficients of respective averages Rave, Gave and Bave of color signals, outputted from the pixels within the predetermined pixel array and an average Save of the second addition signal, are calculated, respectively. These ratio coefficients and the second addition signal are used to produce new R, G and B. COPYRIGHT : (C)2009, JPO&INPIT