Patent ID: 9019569
Filing Date: 2015-04-28
Classification: H04N

Abstract:
1. An image reading apparatus, comprising: an image reading unit configured to read an image of a workpiece; a plurality of holding members each configured to hold the workpiece while image reading is performed by the image reading unit and each including an indicator identifying a type of holding member: an identification unit configured to identify the type of holding member based on a result of reading of the indicator by the image reading unit; and a correction unit configured to perform a shading correction of the image read by the image reading unit based on a result of identification by the identification unit, wherein the plurality of holding members include at least to first holding member and a second holding member, the first holding member including a holding portion configured to hold the workpiece, the second holding member including a holding portion configured to hold the workpiece and a reference portion configured for use in the shading correction, and wherein the correction unit, when the first holding member is identified by the identification unit, is configured to perform the shading correction based on a preset setting, and when the second holding member is identified by the identification unit, is configured to perform the shading correction based on the image data of the reference portion read by the image reading unit.