Patent ID: 8655098

Claim:
An image signal processing apparatus for performing an image signal process for a digitalized image signal from an image pickup device, comprising: a first tone conversion processing section for generating a first image signal by performing a space-variant tone conversion process for the image signal; a second tone conversion processing section for generating a second image signal by performing a space-invariant tone correction process for the image signal; and a synthesizing section for synthesizing the first image signal and the second image signal, wherein the space-variant tone conversion process is a process for deciding tone conversion characteristics variant among pixels or regions of the image signal, and performing a tone conversion for the pixels or the regions by using the tone conversion characteristics variant among the pixels or the regions, and wherein the space-invariant tone conversion process is a process for performing a tone conversion for the image signal by using a fixed tone conversion characteristic independent of the pixels or the regions, without deciding tone conversion characteristics variant among the pixels or the regions.