Signaling syntax elements for transform coefficients for sub-sets of a leaf-level coding unit
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United States of America Patent
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Nov 21, 2017
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app pub date -
Mar 6, 2012
filing date -
Jun 30, 2011
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Abstract
This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video encoder divides a leaf-level unit of video data into a plurality of transform coefficient sub-sets. The video encoder generates, for a sub-set of the plurality of transform coefficient sub-sets, a syntax element that indicates whether or not the sub-set includes any non-zero coefficients. In some examples, the video encoder may selectively determine whether to generate the syntax element for each sub-set. A decoder may read an entropy encoded bit stream that includes the syntax element, and determine whether to decode the sub-set based on the syntax element.
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