Patent ID: 7391919

Claim:
An edge correction apparatus comprising: a high-frequency extraction device for extracting high-frequency signals not less than a predetermined frequency from an input pixel signal output from image sensing elements; a suppression device for suppressing signal components not more than a suppression level from the extracted high-frequency signals; a setting device for setting the suppression level used by said suppression device in correspondence with a signal level of each of the input pixel signal, wherein the signal level is determined on the basis of an output signal level of the image sensing elements; and a high-frequency emphasis device for emphasizing the high-frequency signal suppressed by said suppression device, wherein said setting device sets the suppression level in unit of a pixel, which is set in proportion to an optical shot noise of an image sensing element increasing in accordance with the input signal level, wherein the suppression level is set in accordance with the dark noise level of the image sensing elements.