Patent ID: 8049788

Claim:
An image signal processing device for correcting at least two color difference signals comprising: a first correcting unit configured to set a correction amount for input color difference signals to “0” and generating output color difference signals when a colorless area containing the original point of a color difference space in which the two color difference signals are set as two intersecting axes, a first boundary line through which the inside and outside of the colorless area are partitioned, a suppression area which is nearer to the original point than the first boundary line and defined by a color difference suppression width, and a second boundary line through which the interior of suppression area and the inside area of the suppression area are partitioned are set in the color difference space and the values of the color difference signals are outside of the colorless area; a second correcting unit configured to correct the input color difference signals so that the values of the input color difference signals approach to “0,” when the values of the color difference signals are inside of the suppression area, thereby and generate the output color difference signals; and a third correcting unit configured to correct the input color difference signals so that the value of each of the input color difference signals is located between a value on the first boundary line and a value on the second boundary line when the values of the color difference signals are within the colorless area and outside the suppression area, and configured to generate the output color difference signals.