Facsimile and static presentation processing – Natural color facsimile
Patent
1992-03-10
1994-01-25
Ro, Bentsu
Facsimile and static presentation processing
Natural color facsimile
345152, G03G 1501
Patent
active
052820262
ABSTRACT:
A device for judging the type of color of a document judges in real time on the basis of read data whether or not a document is a color document or a black-and-white document. It is judged whether or not each pixel is a color pixel on the basis of the read data. When not less than a predetermined number of color pixels are continuously detected, the presence of a color block is detected. When there are not less than a predetermined number of color blocks in one line or there is a relatively long color block having not less than a constant length in one line, it is judged that the line is a color line. When not less than a predetermined number of color lines, for example, 100 color lines are detected, it is judged that the document is a color document.
REFERENCES:
patent: 4149152 (1979-04-01), Russo
patent: 4206457 (1980-06-01), Weisbecker et al.
patent: 4839738 (1989-06-01), Kaku et al.
Patent Abstracts of Japan, vol. 10, No. 370 (E-463) Dec. 10, 1986 & JP-A-61 166 273 (Matsushita Electric Ind. Co. Ltd.) Jul. 26, 1986.
Patent Abstracts of Japan, vol. 14, No. 31 (P-993) Jan. 22, 1990 & JP-A-1 269 957 (Cannon Inc.) Oct. 27, 1989.
Patent Abstracts of Japan, vol. 12, No. 339 (P-757) Sep. 12, 1988 & JP-A-63 098 671 (Ricoh Co. Ltd.) Apr. 30, 1988.
Mita Industrial Co. Ltd.
Ro Bentsu
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