Facsimile and static presentation processing – Facsimile – Reduced time or bandwidth for static image communication
Patent
1997-10-06
1999-08-03
Au, Amelia
Facsimile and static presentation processing
Facsimile
Reduced time or bandwidth for static image communication
382284, 382176, H04N 141
Patent
active
059332492
ABSTRACT:
One object of the present invention is to cut out areas of different natures from an image hierarchically. For encoding, an area identifier identifies areas of an input image. A multivalued area is encoded in a multivalued encoding mode. As for a bicolor area, typical-color values are computed and then encoded in a binary encoding mode. For decoding, multivalued coded data is decoded in a multivalued decoding mode. As for binary-coded data, values of pixels of a binary image resulting from binary decoding are transformed into multivalued data using associated typical-color values. The multivalued data is structured according to structural information, wherein areas of the data may be superposed mutually. Thus, an image is reconstructed.
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Ishida Yoshihiro
Maeda Mitsuru
Shimura Norio
Yoshida Tadashi
Au Amelia
Bali Vikkram
Canon Kabushiki Kaisha
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