Image analysis – Histogram processing – For setting a threshold
Patent
1983-07-18
1986-01-21
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
358260, 382 60, G06K 948
Patent
active
045661286
ABSTRACT:
A method for compressing the data of character images primarily for a font set for kanji (Chinese character) photo-type-setting characterized by the steps of dividing up an original picture image into a plurality of partial picture images, identifying the contour lines in each of the partial picture images by finding a start point and an end point for each of the contour line segments as well as those points which characterize the configuration of each contour line segment, connecting the start points with the corresponding end points so as to determine a group of closed-loop line segments as an aggregate of the contour lines and to represent the original picture image, and storing the date of this original picture in the form of a group of closed-loop line segments in a memory in a highly compressed form through elimination of coordinate point data which may be identified by less redundant information.
REFERENCES:
patent: 4150401 (1979-04-01), Yamamoto et al.
patent: 4355337 (1982-10-01), Sekigawa
patent: 4365273 (1982-12-01), Yamada et al.
patent: 4375654 (1983-03-01), Evans et al.
patent: 4409623 (1983-10-01), Kobayashi et al.
Boudreau Leo H.
Dainippon Screen Seizo Kabushiki Kaisha
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