Moving body recognition circuit using luminance signal and movin

Details Moving body recognition circuit using luminance signal and movin Moving body recognition circuit using luminance signal and movin

1988-04-15

1989-07-11

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358126, 358 96, H04N 718

Patent

active

048476889

ABSTRACT:
In a moving body tracking apparatus having a moving body recognition circuit and TV camera, the moving body recognition circuit includes: a contour signal generator for producing a first contour signal indicative of contour of an image defined by at least one field, a second contour signal subsequent to the first contour signal, and a third contour signal subsequent to the second contour signal, a first and a second memory for temporarily storing, respectively the first and the second contour signals; contour line width increasing circuit responsive to the first and second memory for increasing the width of contour line represented by output signals of the first and second memory; and comparator responsive to the third contour signal and output signal from the contour line width increasing circuit for producing an output signal when a contour line represented by the third contour signal is out of phase with a contour line represented by the output signal from the contour line width increasing circuit. As a result, moving body except for undesired small movement can be satisfactorily extracted.

REFERENCES:
patent: 3733434 (1973-05-01), Weinstein
patent: 4130835 (1978-12-01), Guildford
patent: 4656594 (1987-04-01), Ledley
"A Comparison of Image Tracking Techniques Using Correlation" by James Fawcett, 1980 IEEE pp. 892-899.

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