Method and apparatus for vector aligned dithering

Details Method and apparatus for vector aligned dithering Method and apparatus for vector aligned dithering

1992-07-06

1993-11-23

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

358457, G09G 510

Patent

active

052648400

ABSTRACT:
A method and apparatus for dithering vectors in which the dither matrix is aligned to the vector and not to the display coordinate space. The dither matrix is aligned to the vector according to the major axis of the vector. In a preferred embodiment the dither matrix is rectangular in shape to correspond to the shape of the vector. The vector aligned dither matrix ensures that the individual pixels which make up the vector are dithered with elements more likely to simulate the original intermediate intensities.

REFERENCES:
patent: 3937878 (1976-02-01), Judice
patent: 4586037 (1986-04-01), Rosener et al.
patent: 4612540 (1986-09-01), Pratt
Shenk, Al; "Calculus and Analytic Geometry"; Goodyear Publishing Company, Inc.; copyright 1977; p. 409.

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