Patent ID: 6900838

Claim:
An image signal processing method for processing a color component signal obtained by a solid-state image pickup device including an arrangement of a plurality of a photoelectric elements and a color filter arranged in the light receiving section of each of the pixels corresponding to the photoelectric elements, comprising the steps of: storing a first color component signal from a designated pixel corresponding to the photoelectric element having a filter capable of passing at least green light on a line of said solid-state image pickup device in a memory device; storing a second color component signal from at least one pixel in the neighborhood of said designated pixel corresponding to said photoelectric element in said memory device, the neighboring pixel having a filter for transmitting at least the green light on a line different from said line; and interpolating the value of said first color component signal based on the value of said second color component signal in an interpolation processing unit, wherein said designated pixel is a pixel corresponding to the photoelectric element on a horizontal line, and the pixel in the neighborhood of said designated pixel includes a pixel on another horizontal line adjacent to said designated pixel, and wherein the average of said first and second color component signals is calculated, and the value of said first color component signal is interpolated based on said average of said first and second color component signals.