Document image scanning device that provides image of proper appearance while preserving image density
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 26, 2008
Grant Date -
May 23, 2002
app pub date -
Sep 25, 2001
filing date -
Sep 26, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for scanning a document includes a photoelectric conversion unit which scans a document, and supplies image data of the scanned document, a background detecting unit which detects a background level of the image data, an image processing unit which applies one or more types of image processing to the image data, and applies image processing identical to the one or more types of image processing to the detected background level, and a background removal unit which removes background noise from the image data having undergone the image processing according to a threshold that is derived from the background level having undergone the image processing.
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