INTERPOLATION PROCESSOR AND RECORDING MEDIUM RECORDING INTERPOLATION PROCESSING PROGRAM

摘要

An interpolation processing apparatus that performs interpolation processing on an image generated by an image-capturing sensor constituted by two-dimensionally arraying a plurality of lattice points each of which outputs color information corresponding to a first color component achieving a highest spatial frequency and a plurality of vacancies each of which outputs color information corresponding to a second color component or a third color component with a lower spatial frequency than the first color component instead of outputting color information corresponding to the first color component, to determine an interpolation quantity equivalent to color information corresponding to the first color component for each of the vacancies, includes: a means for similarity degree calculation that calculates similarity degrees along a plurality of directions for each interpolation target vacancy to undergo the interpolation processing by using color information corresponding to three colors, which are the first color component through the third color component; a means for similarity judgment that makes a judgment with respect to a direction manifesting pronounced similarity for the interpolation target vacancy based upon the similarity degrees along the plurality of directions calculated by the means for similarity degree calculation; and a means for interpolation quantity calculation that calculates the interpolation quantity for the interpolation target vacancy in conformance to results of the judgment made by the means for similarity judgment. <IMAGE>