Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-03-06
1991-04-09
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358135, 358136, H04N 712
Patent
active
050069292
ABSTRACT:
A redundancy reduction algorithm, such as hybrid DCT, is applied to a video signal and is subsequently encoded by pixel blocks, and motion vectors are generated for each image block. At least one global motion vector is then generated for the entire image, the block motion vectors are substracted from the global vector to obtain local motion vectors representing the shifts from the global vector, the global vector is encoded with fixed length, the local vectors are encoded with variable length, and the coded global vector and the coded local vectors are multiplexed into the coded video signal to be transmitted.
REFERENCES:
patent: 4689673 (1987-08-01), Ohki et al.
patent: 4769826 (1988-09-01), Kubo et al.
patent: 4845566 (1989-07-01), Kondo et al.
Marzio Barbero et al., "Coding Strategies Besed on DCT for the Transmission of HDTV", Feb. 1988, 2nd Int'l Wkshop in Signal Processing of HDTV, vol. 2, pp. 3-8.
M. Barbero et al., "A Flexible Architecture for a HDTV Code Based on DCT", Aug. 1989, 3rd Int'l Wkshp on HDTV, vol. 3.
Barbero Marzio
Muratori Mario
Stroppiana Mario
Coleman Henry D.
Kostak Victor R.
Rai Radiotelevisione Italiana
Sudol R. Neil
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