Two-step gamma correction method and system

Details Two-step gamma correction method and system Two-step gamma correction method and system

1995-10-24

2000-05-16

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06F 1500

Patent

active

06064396&

ABSTRACT:
The current methods and systems for correcting image information improve input and output characteristics. Although .gamma. correction curves have been used in prior art, the current invention allows more refined control in the correction process without additional parameters or hardware. The refined control includes adjustments at a localized area of the correction curve, an efficient conversion between a standard range value and a device-dependent value, a color-specific correction and a flexible user interface. Furthermore, the above described advantages are provided on demand rather than storing the pre-calculated information.

REFERENCES:
patent: 5065234 (1991-11-01), Hung et al.
patent: 5406394 (1995-04-01), Numakura et al.

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