Patent ID: 8699106
Filing Date: 2014-04-15
Classification: H04N

Abstract:
1. An image processing apparatus comprising: a first reading unit configured to read a first face of a document; a second reading unit configured to read a second face of the document, the second face being the backside of the first face; a first color conversion unit configured to use a first color conversion table to allow a value indicated in a first color space and read by the first reading unit to be converted into a value indicated in a second color space; a storage unit configured to store a correction LUT, wherein a value indicated in the second color space is inputted to and a value indicated in the second color space is outputted from the correction LUT; a modification unit configured to modify an output value of the correction LUT stored in the storage unit by using the difference between a first read value obtained by reading a chart with the first reading unit and a second read value obtained by reading the chart with the second reading unit; and a correction unit configured to correct the first color conversion table by using the correction LUT modified by the modification unit, wherein the correction unit approximates the first read value read by the first reading unit to the second read value read by the second reading unit.