Patent ID: 7961348
Filing Date: 2011-06-14
Classification: H04N

Abstract:
1. An image scanning apparatus comprising: an area determining unit configured to determine an area where dust is present excluding an area where it was determined in the past that dust was present in a reference area, which is an object of scanning of reference data used for shading correction; a storage control unit configured to cause a storage device to store information concerning the area where it is determined by the area determining unit that dust is present; a scanning control unit configured to acquire, from the storage device, information concerning the area where it is determined by the area determining unit that dust is present and configured to cause the image scanning apparatus to scan the reference data from an area excluding the area where it is determined by the area determining unit that dust is present based on the information which is acquired; and a correction processing unit configured to perform shading correction on the basis of the reference data that the scanning control unit causes the image scanning apparatus to scan.