Motion vector detection circuit used in hierarchical processing

Details Motion vector detection circuit used in hierarchical processing Motion vector detection circuit used in hierarchical processing

1991-03-05

1992-08-25

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, H04N 713

Patent

active

051423600

ABSTRACT:
In this motion detection circuit, in detecting motion vectors by using a block of L.times.M pixels as a unit between images An and Bn of respective hierarchies in which predetermined sampling operations are implemented to an input image A and a comparative image B at n-stages in both horizontal and vertical directions, motion vectors of adjacent blocks of motion vectors detected at the (i-1) stage are taken into consideration as an initial value of motion vector detection at the i-th stage. This detection circuit further comprises a circuit for providing the initial value by using image data at the (i-1)-th stage corresponding to motion vectors of the adjacent blocks.

REFERENCES:
patent: 4853775 (1989-08-01), Rouvrais et al.
patent: 4864398 (1989-09-01), Avis et al.
patent: 4989087 (1991-01-01), Pele et al.
patent: 5031039 (1991-07-01), Haghiri et al.

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