Image reading apparatus and image reading method
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United States of America Patent
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Jun 18, 2019
Grant Date -
Jan 11, 2018
app pub date -
Feb 25, 2016
filing date -
Mar 16, 2015
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Abstract
An image reading apparatus includes: N sensor chips arranged in a first direction and each including a plurality of image pickup elements arranged in the first direction; N optical systems that form, on the N sensor chips, reduced-size images of N reading ranges arranged in the first direction on a document; and an image processing section that uses image data of overlap regions to obtain positions of the overlap regions, obtains, based on the positions and predetermined synthesis reference positions in the overlap regions, magnifications of read images and synthesis positions, performs image processing of correcting the magnifications in the first direction of the image data of the N reading ranges, and combines the image data of the N reading ranges subjected to the image processing, thereby generating synthesized image data.
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