Image signal processing apparatus with code amount control for inter-frame and intra-frame encoding

Abstract

An object of this invention is to effectively reduce a luminance flicker caused by noise while suppressing an adverse effect such as an afterimage and a decrease in the resolution upon smoothing as much as possible even when the S/N ratio of an image photographed at an increased gain is low. An image signal processing apparatus includes a smoothing circuit () to execute smoothing processing of an image signal, a compression encoding circuit () to compression-encode the image signal, a setting circuit () capable of setting, for the compression encoding circuit, the code amount for each picture type, and a control circuit () that controls in accordance with a gain setting value acquired from a camera () to change the intensity of smoothing processing and the assignment ratio of code amount for each picture type.