Image signal processing apparatus

Details Image signal processing apparatus Image signal processing apparatus

1982-02-16

1985-05-14

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358283, 358298, H04N 140

Patent

active

045176051

ABSTRACT:
An image signal processing apparatus provides both improved tonal rendition and resolving power by utilizing a dither matrix in which dither data indicating threshold values are formed by a dither matrix divided into plural sub-dither matrices for providing dither data arranged in a low spatial frequency and such dither data are compared with the density signals from an image.

REFERENCES:
patent: 3739082 (1973-06-01), Lippel
patent: 4194221 (1980-03-01), Stoffel
patent: 4245258 (1981-01-01), Holladay
patent: 4288821 (1981-09-01), Lavallee et al.
patent: 4340912 (1982-07-01), Troxel
patent: 4345276 (1982-08-01), Colomb
patent: 4349846 (1982-09-01), Sekigawa

Affiliated with

Also associated with

Rating

Image signal processing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-771569