Video picture processing including movement detection
First Claim
1. A video detector system for detecting picture movement and/or noise on a video signal, said detector system including:
- first detector means for detecting differences frame by frame on a portion of picture having a plurality of picture points from more than one line;
second detector means for detecting differences frame by frame on a portion of picture having a plurality of picture points from the same line;
third detector means for detecting differences frame by frame on a portion of picture comprising a single picture point, andoutput means for receiving an output from said first, second and third detectors to determine that movement has occured in dependence on the outputs from said first, second and third detector means.
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Accused Products
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.
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Citations
14 Claims
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1. A video detector system for detecting picture movement and/or noise on a video signal, said detector system including:
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first detector means for detecting differences frame by frame on a portion of picture having a plurality of picture points from more than one line; second detector means for detecting differences frame by frame on a portion of picture having a plurality of picture points from the same line; third detector means for detecting differences frame by frame on a portion of picture comprising a single picture point, and output means for receiving an output from said first, second and third detectors to determine that movement has occured in dependence on the outputs from said first, second and third detector means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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- 13. A method of detecting picture movement on video data comprising detecting differences frame by frame on a portion of picture having a plurality of picture points from more than one line, detecting differences frame by frame on a portion of picture having a plurality of picture points from the same line, detecting differences frame by frame on a portion of picture comprising a single picture point, so as to determine that movment has occured in dependence on the outputs from said first, second and third detection steps.
Specification