Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Reexamination Certificate
2004-10-13
2009-06-16
Tran, Trang U (Department: 2622)
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
C348S620000, C348S701000
Reexamination Certificate
active
07548277
ABSTRACT:
The disclosure relates to a device and a method for estimating the noise level of a video signal representing image sequences. The device comprises a movement compensated interpolation means, a recursive filter designed to receive on a first input the output of the recursive filter movement compensated by the movement compensated interpolation means and on a second input the video signal, means of calculating the difference between the video signal and the output of the recursive filter movement compensated by the movement compensated interpolation means. In accordance with the principles of the invention, the device comprises means of estimating the noise level of the video signal according to the difference and a maximum threshold delimiting this difference.
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Search Report.
Babonneau Jean-Yves
Dieumegard Jacky
Le Meur Olivier
Eriksen Guy H.
Kiel Paul P.
Shedd Robert D.
Thomson Licensing
Tran Trang U
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