Hierarchical motion estimation for interlaced video

Details Hierarchical motion estimation for interlaced video Hierarchical motion estimation for interlaced video

1996-02-05

1998-04-07

Au, Amelia

Television

Bandwidth reduction system

Data rate reduction

348399, H04N 736

Patent

active

057370230

ABSTRACT:
A system and method for performing motion estimation. Interlaced frames are reduced in resolution using field based scaling, and a first search is performed on the reduced resolution frames. This first search is performed by computing motion errors between the fields of a current frame and the fields of a reference frame to obtain vectors that approximately describe inter-field motion. These same motion errors are used to compute frame errors, which are used to obtain vectors that approximately describe inter-frame motion. The approximate field and frame vectors are then refined to get more precise vectors.

REFERENCES:
patent: 5134478 (1992-07-01), Golin
patent: 5193003 (1993-03-01), Kondo
patent: 5270813 (1993-12-01), Puri et al.
patent: 5436665 (1995-07-01), Ueno et al.
patent: 5463422 (1995-10-01), Simpson et al.
patent: 5565922 (1996-10-01), Krause

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