Signalling of filtering information
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United States of America Patent
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-
Aug 13, 2019
Grant Date -
Nov 9, 2017
app pub date -
May 8, 2017
filing date -
May 9, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A video decoder is configured to, for a group of video blocks of the video data, determine a number of merged groups for a plurality of classes is equal to one merged group; receive a first flag indicating that filter coefficient information for at least one merged group is not coded in the video data; receive for the one merged group, a second flag, wherein a first value for the second flag indicates that filter coefficient information mapped to the one merged group is coded in the video data, and wherein a second value for the second flag indicates that the filter coefficient information mapped to the one merged group is all zero values; determine the second flag is equal to the second value; and determine one or more filters from the set of filters using the all zero values.
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