HDTV encoder with forward estimation and constant rate motion ve

Details HDTV encoder with forward estimation and constant rate motion ve HDTV encoder with forward estimation and constant rate motion ve

1990-12-11

1992-09-01

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, H04N 712, H04N 718

Patent

active

051444232

ABSTRACT:
A motion compensated encoder where motion vectors are selected based on the prediction error generated in localized areas of the encoded image and based on an available bit budget. The motion vectors are created by dividing the image into blocks of two sizes and by considering the best mix of large and small size blocks, and their associated motion vectors, that minimize the overall prediction error, within the constraints of the bit budget. For convenience, the image division is arranged so that a given number of small sized blocks forms one large sized block (e.g. 16:1). Also, the block sizes are arranged so that employing only large sized blocks does not exceed the given bit budget, while employing only the small sized blocks does exceed the given bit budget.

REFERENCES:
patent: 4689672 (1987-08-01), Furukawa et al.
patent: 4851906 (1989-07-01), Koga et al.
patent: 5040062 (1991-08-01), Knauer et al.
patent: 5043808 (1991-08-01), Knauer et al.
patent: 5049990 (1991-09-01), Kondo et al.
patent: 5063444 (1991-11-01), Knauer et al.
"Digital Pictures", by A. N. Netravali and B. G. Haskell, Plenum Press, 1988, p. 334, et seq.

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