Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-03-15
1992-06-09
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358133, 358136, 358339, H04N 1104, H04N 980, H04N 713
Patent
active
051211912
ABSTRACT:
A method and apparatus for compressing motion pictures is disclosed. The frames of the motion picture are divided into adjacent groups. Each group is treated as a three-dimensional image. The three-dimensional image is then filtered via a three-dimensional FIR filter to generate three-dimensional component images that are more efficiently quantized. The degree of quantization of each component image is determined in part by the spatial frequencies represented by the component image in question. For motion pictures derrived from interlaced scanning devices, the quantization of specific component images is altered to prevent artifacts.
REFERENCES:
patent: 4663660 (1987-05-01), Fedele
patent: 4785349 (1988-11-01), Keith
patent: 4827336 (1989-05-01), Acampora
patent: 4864398 (1989-05-01), Avis
Cassereau Philippe M.
Devine Johnathan D.
Huffman John C.
Zettler, Jr. William R.
Aware Inc.
Britton Howard W.
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