US Patent 6898321 Method and apparatus for blocking effect reduction
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Patent abstract
By utilizing parameters derivable from a compressed bit-stream, measures are obtained of the subjective quality of a decoded picture, without the necessity for reference to source material. A blockiness measure is derived both locally and globally and used to control a de-blocking filter. An estimate of signal-to-noise ratio is derived from quantization values.
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Patent Inventor Names
Jonathan Diggins0
Michael James Knee0
Date of Patent
May 24, 2005
0Patent Application Number
098069680
Date Filed
October 11, 1999
0Patent Primary Examiner
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US Patent 6898321 Method and apparatus for blocking effect reduction
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