04695882 is referenced by 60 patents and cites 3 patents.

A movement of a small picture block in a frame of video signals is provided by recursively applying a gradient method to a picture block in a present frame and a preceding frame to provide a series of sub-movements until said sub-movement decreases less than a predetermined value, and the resultant movement is obtained by the sum of the sub-movements. The present invention provides high accuracy in estimation of movement of a block in a picture as compared with a conventional gradient method, and is attractive in hardware implementation.

Title
Movement estimation system for video signals using a recursive gradient method
Application Number
6/696371
Publication Number
4695882
Application Date
January 30, 1985
Publication Date
September 22, 1987
Inventor
Hirohisa Yamaguchi
Tokyo
JP
Masahiro Wada
Tokyo
JP
Agent
Armstrong Nikaido Marmelstein & Kubovcik
Assignee
Kokusai Denshin Denwa
JP
IPC
H04N 7/18
H04N 7/12
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