Resolution conversion with preservation of fine lines and of hue

Details Resolution conversion with preservation of fine lines and of hue Resolution conversion with preservation of fine lines and of hue

1997-02-04

2000-09-12

Jankus, Almis R.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06T 1500

Patent

active

061184578

ABSTRACT:
An image processing method and apparatus which prestore a mask pattern generated using a pseudo-random number in a ROM within the apparatus, and perform image data conversion using the mask pattern. This avoids overlap between the pixel pattern of the image data and the mask pattern in a large area, and conserves the respective color densities. Accordingly, the method and apparatus enable image processing conserving the color hue and tonality of the original image data.

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patent: 5200839 (1993-04-01), Uchizono
patent: 5297217 (1994-03-01), Hamilton, Jr. et al.
patent: 5394252 (1995-02-01), Holladay et al.

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