| 摘要 |
PROBLEM TO BE SOLVED: To provide an image reading apparatus capable of correcting images on the surface and backside of a original document which have been read while suppressing an increase in a circuit scale. SOLUTION: The image data of the surface of an original document 100 read by a surface reading section 106 are temporarily written into a writing address of a RAM 503 for a case that the original document 100 does not skewed. Then, the image data of the surface are subjected to rotation processing at a rotation angle corresponding to the skew angle of the original document 100. In this case, the writing address on the RAM 503 after rotation is obtained by Affine transformation. At the same time, for the image data on the backside, a writing address for a case that the skew angle of the original document 100 is not taken into consideration is changed depending on the actual skew angle of the original document 100, and the image data are written into the changed writing address. COPYRIGHT: (C)2011,JPO&INPIT
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