04890160 is referenced by 100 patents and cites 7 patents.

A correlation surface is derived by phase correlating two pictures selectively displaced in the X and Y directions. The illustrative surface shows a large peak at zero displacement, corresponding to a stationary background, and a fairly large peak corresponding to a moving object, the X, Y position of the peak indicating the magnitude (pixels per field period) and direction of the motion vector. A set of motion vectors is thus determined and testing is then carried out, on a pixel by pixel basis or pixel block by pixel block basis, to determine which of the motion vectors gives the best match in deriving the second picture from the first. The motion vector thus assigned may be used in temporal interpolation of the pictures.

Title
TV picture motion vector measurement by correlation of pictures
Application Number
7/126108
Publication Number
4890160
Application Date
January 19, 1988
Publication Date
December 26, 1989
Inventor
Graham A Thomas
Tadworth
GB
Agent
Robert F O Connell
Assignee
British Broadcasting Corporation
GB
IPC
H04N 7/12
H04N 7/18
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