Patent ID: 7391532
Filing Date: 2008-06-24
Classification: H04N

Abstract:
1. An image sensing system constituted by connecting an image sensing apparatus and image processing apparatus, said image sensing apparatus comprising: an image sensing unit adapted to sense an original and output image data of the original, wherein said image sensing unit includes an image sensor which has a plurality of photoelectric conversion element arrays for respectively photoelectrically converting light of a plurality of colors; a shading correction unit adapted to apply shading correction to the image data output from said image sensing unit; a storage medium adapted to hold data on image sensing characteristic including spacing between the plurality of photoelectric conversion element arrays and spatial positional deviations of the plurality of colors of pixel signals, obtained by said plurality of photoelectric conversion element arrays within a single chip of said image sensor, with respect to one of said pixel signals obtained by one of said plurality of photoelectric conversion element arrays; and an output unit adapted to output shading-corrected image data and the data on image sensing characteristic held in said storage medium to said image processing apparatus, and said image processing apparatus comprising: an input unit adapted to receive the image data and the data on image sensing characteristic output from said image sensing apparatus; a line spacing correction unit adapted to correct the image data for line deviations between the plurality of colors based on the spacing between the plurality of photoelectric conversion element arrays; a generation unit adapted to generate image sensing characteristic correction data on the basis of the spatial positional deviations of the plurality of colors of pixel signals; and an image sensing characteristic correction unit adapted to correct influence of an image sensing characteristic on the line-deviation-corrected image data using the image sensing characteristic correction data generated by said generation unit.