Method and apparatus for thinning printed images

Details Method and apparatus for thinning printed images Method and apparatus for thinning printed images

1990-12-31

1993-10-05

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

382 55, 358456, 345189, 345197, 345143, G09G 106

Patent

active

052509346

ABSTRACT:
A method and apparatus are shown for improving bit-image quality in video display terminals and xerographic processors. In one embodiment, each scan line of a source image is ANDed with the scan line above to remove half-bits and thin halftones. In other embodiments, entire blocks of data are processed by bit-block transfer operations, such as ANDing a copy of the source image with a copy of itself shifted by one bit. Also, a source image can be compared to a shifted copy of itself to locate diagonal lines in order to place gray pixels bordering these lines.

REFERENCES:
patent: 3846754 (1974-11-01), Oka et al.
patent: 4010446 (1977-03-01), Kawa
patent: 4204232 (1980-05-01), Mizuno
patent: 4517604 (1985-05-01), Lasher et al.
patent: 4531120 (1985-07-01), Brownwell et al.
patent: 4665551 (1987-05-01), Sternberg et al.
patent: 4688031 (1987-08-01), Haggerty
patent: 4780711 (1988-10-01), Doumas
patent: 4851825 (1989-07-01), Naiman

Affiliated with

Also associated with

Rating

Method and apparatus for thinning printed images does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for thinning printed images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for thinning printed images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1007616