Custom Query (1442 matches)
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| Ticket | Resolution | Summary | Owner | Reporter |
|---|---|---|---|---|
| #1137 | fixed | 8.6.2 Normalisation of transform skip coefficients for blocksizes > 4x4 | davidf | |
| Description |
During integration, there was a conflict between two like proposals that extended transform skip to all TU sizes (JCTVC-N0288 and JCTVC-N0167). N0288 normalises transform skip coefficients (left shift) according to block size: r[x][y] = d[x][y] << 7 Becomes r[x][y] = d[x][y] << (5 + Log2(nTbS)) N0167 does not change this process. The current text follows N0167. Not performing the shift causes loss of coefficient precision equivalent to an increase of QP by 6*(Log2(nTbS)-2). Eg, for an 8x8 TU, the lossless QP for transform skip is QP=10. |
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| #652 | fixed | 8.7.1. General in In-loop filter | bbross | djpark0115 |
| Description |
"The three in-loop filters" => "The two in-loop filters" |
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| #732 | wontfix | 8.7.2.3 Derivation process of boundary filtering strength | bbross | azaam |
| Description |
In the paragraph (8.7.2.3 Derivation process of boundary filtering strength) page 148. 1-The sentence : ((If the sample p0 or q0 is in the luma coding block of a coding unit coded with intra prediction mode, the variable bS[ xDi ][ yDj ] is set equal to 2. Otherwise, if the block edge is also a transform block edge and the sample p0 or q0 is in a luma transform block which contains non-zero transform coefficient level----)). The boundary strength (BS) for the last condition is not specified!! 2-The sentence : ((For the prediction of the luma prediction block containing the sample p0 different reference pictures or a different number of motion vectors are used than for the prediction of the luma prediction block containing the sample q0.)) is not clear!! |
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