Image analysis – Histogram processing – For setting a threshold
Patent
1982-12-09
1986-05-13
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
235436, 250557, 364518, 382 9, G06K 920
Patent
active
045891443
ABSTRACT:
A character and image processing apparatus comprises a scanning section for photoelectrically converting data on a sheet in which character data and image data are mixedly arranged in a free format; an image buffer for storing the photoelectrically converted data; a scanning control circuit for scanning the stored data in the image buffer to detect control marks and for determining a character read mode, an image data output mode or a skip mode according to the control mark; a character recognizing circuit for recognizing characters from the image buffer when the scanning control circuit determines the control marks as the character read mode; a data compression circuit for compressing the image data from the image buffer when the scanning control circuit determines the control marks as the image data output mode; and a data editing circuit for discriminately editing the character data and the image data.
REFERENCES:
patent: 3496543 (1970-02-01), Greenly
patent: 3930237 (1975-12-01), Villers
patent: 3976982 (1976-08-01), Eiselen
patent: 4021777 (1977-05-01), Shepard
patent: 4300123 (1981-11-01), McMillin et al.
Patents Abstracts of Japan, vol. 5, No. 74 (E-57) [746], May 16, 1981.
Patents Abstracts of Japan, vol. 5, No. 86 (E-60) [758], Jun. 5, 1981.
Computer Design, "OCR Page Reader Recognizes Common Fonts, Skips Unreadable Data", vol. 18, No. 11, Nov. 1979, p. 68.
Boudreau Leo H.
Mancuso Joseph
Tokyo Shibaura Denki Kabushiki Kaisha
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