Apparatus for processing halftone image

Details Apparatus for processing halftone image Apparatus for processing halftone image

1989-06-27

1990-02-20

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358458, 358459, H04N 140

Patent

active

049031422

ABSTRACT:
The present invention provides an image processing apparatus for estimating a halftone image from an original binary coded image, wherein there are provided a plurality of line memories for introducing the original binary coded image data and for transferring the data into a shift-register being set therein plural kinds of scanning windows, a computing circuit for counting black pixels within each of the plural kinds of scanning windows, a density pattern-discriminating circuit for performing the comparison judgment between the original binary image and the rebinary image based on the computed value, a conditional formula circuit for performing conditional inequality algorism, and a window judgment circuit having a predetermined truth table for selecting one optimum scanning window.

REFERENCES:
patent: 4667251 (1987-05-01), Hasegawa
patent: 4698688 (1987-10-01), Ochi
patent: 4701811 (1987-10-01), Moriguchi
patent: 4717964 (1988-01-01), Abe
patent: 4741046 (1988-04-01), Matsunawa
patent: 4752822 (1988-06-01), Kawamura

Affiliated with

Also associated with

Rating

Apparatus for processing halftone image does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for processing halftone image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for processing halftone image will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1620512