Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1992-03-31
1994-05-03
Kostak, Victor R.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
H04N 5213
Patent
active
053092376
ABSTRACT:
The present invention apparatus and method uses a recursive filter to estimate the instantaneous intensity and temporal rate of change in intensity for object points in consecutive images of an image-sequence. The estimates of the intensity and its temporal rate of change are updated for each new image in the image sequence. The amount of smoothing introduced by the recursive filter is dependant upon the estimates computed for the intensity and temporal rate of change. As such, the recursive filter corrects the image sequence in accordance with each new set of estimates. Since motion in an image-sequence is implicit in the rate of change of intensity, the recursive filter is able to achieve motion compensated enhancements.
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"Detection and Tracking of Moving Objects by Adaptive Background Extraction", Karmann et al., The 6th Scandinavian Conference on Image Analysis, Oulu, Finland, Jun. 19-22, 1989, pp. 1051-1058.
Ahmed Adel A.
Kostak Victor R.
Siemens Corporate Research Inc.
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