Video signal coding and decoding method

Details Video signal coding and decoding method Video signal coding and decoding method

1995-06-01

1998-05-26

Razavi, Michael T.

Image analysis

Image compression or coding

Contour or chain coding

382197, 382199, G06K 948

Patent

active

057579725

ABSTRACT:
The feature points of the input video signal are detected by canny edge detecting method, the coordinates of the feature points detected are detected is chain coded, the length of the region, including the feature points, of which edge intensity is the specified value or more in the edge intensity maximum change direction at the feature point coordinates obtained when the feature point is detected, are coded. The chain-coded data and the region length coded data are then multiplexed. Thereby, the amount of bits required for coding of the coordinates information can be reduced, as a result the total amount of codes can be reduced.

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patent: 4972495 (1990-11-01), Blike et al.
patent: 5335298 (1994-08-01), Hevenor et al.
patent: 5424556 (1995-06-01), Symosek et al.

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