Restoration filter generation apparatus and method, image processing apparatus, imaging apparatus, restoration filter generation program, and recording medium

摘要

The restoration filter generation device uses the first transfer function acquisition unit 51 and the correction information acquisition unit 56 to convert the point spread function (first transfer function) of each color of RGB of the optical system and the chromatic aberration of magnification caused by the optical system into image data. The correction information indicating the correction amount of chromatic aberration of magnification or the remaining correction amount when correction is performed by the enlargement / reduction of. The second transfer function acquisition unit 52 acquires a second transfer function obtained by translating the first transfer function so as to cancel out the remaining correction amount, and the third transfer function calculation unit 53 sets the first transfer function for each color. Based on the second transfer function, a third transfer function for the luminance system image data is calculated, and the restoration filter generation unit 57 generates a restoration filter for performing restoration processing based on the third transfer function.