Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-08-19
1992-10-13
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 27, H04N 336, H04N 911
Patent
active
051555867
ABSTRACT:
A method and system for digitally performing flare correction on digitized color film images. Each digitized image may include a red data stream, a blue data stream, and a green data stream collectively corresponding to a digitized color image (or frame). The system of the invention digitally generates flare correction signals, and employs the flare correction signals to compensate for undesired luminance variations from frame to frame within each color channel. In a preferred embodiment, the system also generates lift variation correction signals, and employs these signals to achieve a desired balance between the color channels. In one embodiment, the invention generates digitized color film images from a motion picture film, and digitally performs flare correction on the digitized images to correct for changes in the average luminance of consecutive images, and lift correction to achieve a desired balance between red, blue, and green color channels. Additional processing operations, such as color correction, are then performed digitally on the corrected digitized images.
REFERENCES:
patent: 4410908 (1983-10-01), Belmares-Sarabia et al.
patent: 4866511 (1989-09-01), Belmares-Sarabia et al.
P. Swinson, R. Cintel, "URSA", International Broadcast Engineer, pp. 100-102.
L. J. D'Luna, K. A. Parulski, D. C. Maslyn, M. A. Hadley et al., "A Digital Video Signal Post-Processor for Color Image Sensors", IEEE 1989 Custom Integrated Circuits Conference, 1989, pp. 24.2.1-24.2.4.
R. Dean (reports), "Telecine--The State of the Manufacturers", Equipment Focus, 3 pages in length.
Brochure Entitled "DaVinci Unified Color Correction System", Dynatech Broadcast Group Limited, Oct. 1987, 8 pages in length.
Hodgson David O.
Levy Yoram
Groody James J.
Powell Mark R.
Sony Corporation of America
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