The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 1995
Filed:
Mar. 12, 1992
Masashi Koga, Kokubunji, JP;
Hiroshi Sakou, Shiki, JP;
Masaaki Fujinawa, Odawara, JP;
Hiromichi Fujisawa, Tokorozawa, JP;
Tatsuya Murakami, Tachikawa, JP;
Yoshihiro Shima, Tokorozawa, JP;
Tsugio Takahashi, Hadano, JP;
Kazunori Kinoshita, Odawara, JP;
Kiyomichi Kurino, Ashigarashimo, JP;
Hidefumi Masuzaki, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
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.