Method and apparatus for producing binary picture with detection

Details Method and apparatus for producing binary picture with detection Method and apparatus for producing binary picture with detection

1991-08-01

1992-06-09

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358448, H04N 1393

Patent

active

051212226

ABSTRACT:
Binary picture reducing method and apparatus are disclosed, wherein an original picture is divided for a block of a pattern matrix composed of a predetermined number of picture elements, thereby extracting a plurality of binary picture blocks. When the plurality of binary picture blocks each agree with a predetermined thin line pattern, the binary picture block is detected as a thin line block. The thin line block thus detected is retained on an output picture at a position corresponding to a predetermined reduction ratio.

REFERENCES:
patent: 4783838 (1988-11-01), Matsunawa

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