Image analysis – Histogram processing – For setting a threshold
Patent
1992-03-12
1995-02-07
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
258461, 382 61, G06K 938
Patent
active
053881672
ABSTRACT:
A file document image input can have shading removed to produce a deshaded image that is useful for highly efficient compression encoding, to be thereafter stored and transmitted in such efficient encoded form. When the image is retrieved or received, the decoded and deshaded image may have shading returned to it by combining with a shaded template image stored in the template image memory or by synthesizing shading in specified regions. By removing shading from regions, optical character recognition, shading identification or other processing such as smear prevention can be enhanced.
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Fujinawa Masaaki
Fujisawa Hiromichi
Kinoshita Kazunori
Koga Masashi
Kurino Kiyomichi
Hitachi , Ltd.
Mancuso Joseph
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