DERIVATION OF RESAMPLING FILTERS FOR SCALABLE VIDEO CODING
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United States of America Patent
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Oct 9, 2014
app pub date -
Apr 8, 2014
filing date -
Apr 8, 2013
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Abstract
A method for determining a resampling filter for resampling a video signal used in scalable video coding includes estimating a set of row filters based on a video signal. The video signal has a base resolution that is resampled to provide an output signal that enables more efficient coding of the video signal with an enhanced resolution higher than a base resolution. The set of row filters is applied to the video signal to generate a first output signal having rows that are interpolated to the enhanced resolution. A set of column filters is estimated based on the first output signal for resampling the columns in the video signal. The set of column filters is applied to the first output signal to generate a second output signal having columns as well as rows that are interpolated to the enhanced resolution.
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