Patent ID: 8452121

Claim:
An image processor that corrects an image signal, comprising: a frequency analysis section that analyzes a spatial frequency of a luminance component of the image signal; a luminance component correction amount calculating section that calculates an amount of correction of the luminance component of the image signal according to the analysis result of the frequency analysis section only for an image signal in a predetermined luminance level range of a predetermined spatial frequency band; and a luminance component correcting section that corrects the luminance component of the image signal by using the amount of correction calculated by the luminance component correction amount calculating section, wherein the frequency analysis section includes a high frequency component extracting section that extracts a predetermined high frequency component of the luminance component of the image signal, and the luminance component correction amount calculating section includes a frequency gain calculating section, which calculates a frequency gain corresponding to the high frequency component extracted by the high frequency component extracting section, and calculates the amount of correction of the luminance component on the basis of the luminance component in the predetermined luminance level range of the spatial frequency band and the frequency gain calculated by the frequency gain calculating section.