System and method for processing an image having edges

Details System and method for processing an image having edges System and method for processing an image having edges

1991-11-25

1999-02-02

Mengistu, Amare

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

358447, 382269, G09G 536

Patent

active

058671420

ABSTRACT:
A method of processing an image to reduce false granularity, or "aliasing", resulting from the reproduction of edges using fixed size pixels. In the preferred embodiment of the invention, certain pixels adjacent to black pixels corresponding to an edge are set to a gray level. The setting of certain pixels to a gray level involves detecting a pattern in a block of pixels by detecting subpatterns within the block of pixels.

REFERENCES:
patent: 4259694 (1981-03-01), Liao
patent: 4698778 (1987-10-01), Ito et al.
patent: 4703363 (1987-10-01), Kitamura
patent: 4805033 (1989-02-01), Nishikawa
patent: 4817174 (1989-03-01), Nakatani
patent: 4866534 (1989-09-01), Tada
patent: 5036405 (1991-07-01), Kojima
patent: 5126726 (1992-06-01), Howard et al.
"Anti-Aliasing Video Lookup Table" IBM Technical Disclosure Bulletin, vol. 27 No. 10B, Mar. 1985.

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