Picture block motion detecting apparatus

Details Picture block motion detecting apparatus Picture block motion detecting apparatus

1996-01-24

1998-07-07

Stoll, Thomas L.

Image analysis

Image compression or coding

Adaptive coding

348409, 348415, 348416, G06K 936

Patent

active

057780994

ABSTRACT:
The invention selects a plurality of search ranges so that picture block motion detection can be controlled by feed forward sequence. A picture block motion detecting apparatus obtains an activity of blocks to be detected in advance, and then controls detection range of blocks to be detected next according to said activity. In the picture block motion detecting apparatus, motion vector is detected while picture block motion detection is not carried out, and backward inter-frame picture block motion detecting circuit in idle state operates when forward inter-frame picture block motion detection is operating, which provides an enlarged search range rather than that of bidirectional inter-frame picture block motion detection.

REFERENCES:
patent: 4992869 (1991-02-01), Samad et al.
patent: 5025495 (1991-06-01), Avis
patent: 5103295 (1992-04-01), Uwabata
patent: 5208667 (1993-05-01), Saunders
patent: 5400087 (1995-03-01), Uramoto et al.

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