Motion compensation circuit

Details Motion compensation circuit Motion compensation circuit

1994-07-21

1995-11-21

Boudreau, Leo H.

Image analysis

Image compression or coding

Quantization

348398, 348413, 348416, 348699, G06K 936

Patent

active

054695171

ABSTRACT:
A motion compensation circuit comprises finite impulse response (FIR) filters divided into N groups according to N subbands of input video signal samples. One of the FIR filters of each group receives a delayed version of the subband of the group, and the remainder of the group receives a delayed version of one or more of the subbands which are adjacent to the subband of the group. Each FIR filter has tap-weight multipliers controlled in response to an estimated motion vector for shifting sample points of each subband. N adders are provided corresponding respectively to the N groups of FIR filters for summing the outputs of the FIR filters of the corresponding groups to produce N motion compensation signals.

REFERENCES:
patent: 4949176 (1990-08-01), Levy
patent: 4969040 (1990-11-01), Gharavi
patent: 5218435 (1993-06-01), Lim et al.
patent: 5223926 (1993-06-01), Stone et al.

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