Method and system for content adaptive analog video noise...

Details Method and system for content adaptive analog video noise... Method and system for content adaptive analog video noise...

2011-04-26

2011-04-26

Tran, Trang U (Department: 2422)

Television

Image signal processing circuitry specific to television

Motion dependent key signal generation or scene change...

C348S607000, C348S620000, C348S622000

Reexamination Certificate

active

07932955

ABSTRACT:
A method and system for content adaptive analog video noise detection are provided. A motion metric (MM) value, an edge detection value, and a content detection value may be determined for pixels in a video image. The MM values of pixels with edge detection values smaller than an edge threshold value and with content detection values smaller than a content threshold value may be collected and accumulated for a portion of the noise level intervals when the MM values fall in this interval. The MM values collected and accumulated may be utilized to determine an average noise level for each of the intervals. A noise level indicator (NLI) for the current video image may be determined based on the noise level of the current image or on the noise levels of the current and at least one previous video images.

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patent: 7145607 (2006-12-01), Hui
patent: 2002/0027610 (2002-03-01), Jiang et al.

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