Video picture processing including movement detection

Details Video picture processing including movement detection Video picture processing including movement detection

1980-03-14

1981-09-08

Murray, Richard

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358167, H04N 718

Patent

active

042888158

ABSTRACT:
A video movement detector suitable for detecting picture movement and/or noise on a video signal. A first detector detects differences frame by frame on a portion of picture having a plurality of picture points from more than one line. A second detector detects differences frame by frame from a portion of picture having a plurality of picture points from the same line, and a third detector detects differences frame by frame from a portion of a picture comprising a single picture point. Movement is determined to have taken place when the differences measured by the respective detectors exceed predetermined thresholds. The selected thresholds are typically of different values to provide the capability of distinguishing between noise and movement in varying conditions. The movement detection arrangement can be used to control picture manipulation during processing such as in a noise reduction system, standards conversion or picture size change arrangements.

REFERENCES:
patent: 3988533 (1976-10-01), Mick et al.
patent: 4107736 (1978-08-01), Lowry et al.

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