Method and apparatus for picture motion measurement using pictur

Details Method and apparatus for picture motion measurement using pictur Method and apparatus for picture motion measurement using pictur

1989-08-02

1991-04-16

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358140, H04N 712

Patent

active

050087444

ABSTRACT:
A method of picture motion measurement in which two pictures are correlated to determine correlation as a function of displacement to determine peak correlation values corresponding to motion vectors. In the method a maximum sample point (P) associated with a peak in a correlation surface is located and a second sample point (D) of those immediately surrounding said point (P) selected having the steepest gradient with respect to the said point (P). The difference (d1) in magnitude between these points is determined as is the corresponding difference (d2) between the said point (P) and a point (H) colinear therewith. A comparison of these differences (d1 and d2) is used to determine the location of the peak to an accuracy better than the interval between adjacent sample points.

REFERENCES:
patent: 4661846 (1987-04-01), Kondo
patent: 4777530 (1988-10-01), Kondo
patent: 4853775 (1989-08-01), Rouvrais et al.
"Television Motion Measurement for DATV and Other Applications", BBC Research Report; Thomas; Sep. '87.

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