Patent Document ID: 9160868
Application ID: 14275587
Patent Status: 1

Claim One:
1. A document reading apparatus comprising: a first light source configured to irradiate light toward a reading area; a second light source configured to irradiate light toward the reading area from a position different from that of the first light source, a light amount of the second light source being smaller than that of the first light source; a photoelectric conversion unit configured to receive reflected light from a document in the reading area, and to photoelectrically convert the received reflected light to image data; a first determination unit configured to determine a document type of a target pixel based on a first image data of the target pixel and a second image data of the target pixel, the first image data is obtained through a photoelectric conversion of the reflected light irradiated from the first light source and the second image data is obtained through a photoelectric conversion of the reflected light irradiated from the second light source; a second determination unit configured to re-determine a document type of the target pixel based on the determination result of the target pixel and the determination result of peripheral pixel of the target pixel, and a generation unit configured to generate image data of the target pixel based on the first image data and the second image data in accordance with the document type determined by the first discrimination unit or the second discrimination unit.