Is a
Patent attributes
Patent Applicant
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jonathan Diggins0
Michael James Knee0
Date of Patent
May 24, 2005
0Patent Application Number
098069680
Date Filed
October 11, 1999
0Patent Citations Received
Patent Primary Examiner
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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