RE-SAMPLING FILTERS FOR SCALABLE VIDEO CODING
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United States of America Patent
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Issued Date -
Dec 18, 2014
app pub date -
Jun 13, 2014
filing date -
Jun 14, 2013
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Abstract
In one embodiment, a method receives a plurality of sample values. The method then determines a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] or [0, 1, −4, 13, 60, −8, 3, −1] assigned to the filter. The up-sampled value is determined by applying the set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] or [0, 1, −4, 13, 60, −8, 3, −1] to the plurality of sample values. The method then outputs the up-sampled value for use in coding a second layer of a higher resolution than the first layer. The up-sampled values may be for the 3/16 and −3/16 phase offsets.
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