Digital video color processor with anti-aliasing filter

Details Digital video color processor with anti-aliasing filter Digital video color processor with anti-aliasing filter

1991-08-05

1992-11-24

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 80, 358214, H04N 5253

Patent

active

051667835

ABSTRACT:
A method and system for digitally performing a color transformation on digitized color film images. The digitized images may comprise frames of a digital video signal, with a red frame, a blue frame, and a green frame collectively corresponding to a digitized color image. The invention avoids aliasing error by employing a set of low pass filters, connected in parallel, to filter the digital input data prior to color correction. The output of each filter is processed digitally in a separate color correction circuit. Each color correction circuit implements a different polynomial term of a color transformation. The outputs of the color correction circuits are combined to generate a color corrected output data stream.

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"Digital Multi Effects DME-5000 (NTSC)", Sony Corporation brochure, seven pages.
D'Luna et al., "A Digital Video Signal Post-Processor For Color Image Sensors", IEEE 1989 Custom Integrated Circuits Conference, pp. 24.2.1 through 24.2.4.
"Telecine--The State of the Manufacturers", three pages.
Brochure entitled "DaVinci Unified Color Correction System", Dynatech Broadcast Group Limited, printed Oct. 1987.

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