Method, device and microprocessor for selectively compressing video frames of a motion compensated prediction-based video codec
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United States of America Patent
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Jun 9, 1998
Grant Date -
N/A
app pub date -
Oct 26, 1995
filing date -
Oct 26, 1995
priority date (Note) -
Expired
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Abstract
A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based video codec based on a predetermined set of compression techniques. An energy estimate of the current displaced frame difference, DFD, is used to compute a ratio between the estimate and a historical mean of energy estimates. The ratio is iteratively compared to a predetermined set of thresholds which are associated with the predetermined set of compression techniques. The comparisons are used to choose a technique based on the thresholds, and a technique is selected to be used for encoding the current DFD.
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