Patent ID: 7324236
Filing Date: 2008-01-29
Classification: H04N

Abstract:
1. An image sensing apparatus comprising: an image sensor which separately reads out image signals from a plurality of photoreceptive pixels via a plurality of output channels; a reference level acquisition unit adapted to acquire a first reference level by selecting a maximum of the image signals read via said plurality of output channels when said image sensor reads a white member, and acquire a second reference level by selecting a minimum of the image signals via said plurality of output channels when said image sensor reads a reference density member having a predetermined density of half tone; a reference value setting means for setting reference values by fitting said first and second reference levels; and a plurality of adjustment units, respectively corresponding to said plurality of output channels, each adapted to adjust levels of the image signals output via corresponding one of said plurality of output channels to said corresponding reference values set by said reference value setting means.