Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2006-12-05
2006-12-05
Natnael, Paulos M. (Department: 2622)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
Reexamination Certificate
active
07145607
ABSTRACT:
A method and system for digital video noise reduction which includes a picture analyser (103) for analysing pictures in a video sequence to determine the amount of moving regions therein, a noise level detector (102) for estimating the noise level (N) in the video sequence, a filtering level estimator (105, 103) for determining a maximum filtering level (L) for each picture based on the amount of moving regions and the estimated noise level (N) and a spatial filter (106) and a temporal filter (107), the temporal filter being coupled to the filter level estimator for controlling the level of filtering of each picture in the sequence in accordance with the maximum filtering level.
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Iannucci Robert
Jorgensen Lisa K.
Seed IP Law Group PLLC
STMicroelectronics Asia Pacific Pte. Ltd.
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