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16th Meeting: Geneva, October 2019 2019-10-04 11:05
Interaction between dual tree and minimum CU size
Authors: T.-D. Chuang MediaTek C.-Y. Chen MediaTek C.-W. Hsu MediaTek Y.-W. Huang MediaTek Shawmin Lei MediaTek
Abstract
In VVC Draft 6, qtbtt_dual_tree_intra_flag equal to 1 and MinCbSizeY equal to 128 can occur at the same time. When this occurs, a 128x128-luma/2x64x64-chroma coding tree unit (CTU) will be partitioned to four 64x64-luma/2x32x32-chroma child nodes with inferred quadtree (QT) split, which is contradictory to the MinCbSizeY setting. Three methods are proposed to solve this issue. In the Method 1, qtbtt_dual_tree_intra_flag is inferred to be 0 in the sequence parameter set (SPS) when MinCbSizeY is 128. In Method 2, qtbtt_dual_tree_intra_flag is signalled, but the dual tree is not applied when MinCbSizeY is 128. In Method 3, when qtbtt_dual_tree_intra_flag is 1, MinCbSizeY shall not be larger than 64.
Meeting Notes
JVET-P0578 Interaction between dual tree and minimum CU size [T.-D. Chuang, C.-Y. Chen, C.-W. Hsu, Y.-W. Huang, S.-M. Lei (MediaTek)]

This was an HLS contribution and was considered in the HLS BoG; see JVET-P0968.

References:
JVET-O2001
Cited:
JVET-P0968 JVET-P2001 JVET-Q0002 JVET-Q0003 JVET-Q0041 JVET-Q0085 JVET-Q0097 JVET-Q0124 JVET-Q0125 JVET-Q0132 JVET-Q0148 JVET-Q0165 JVET-Q0168 JVET-Q0173 JVET-Q0175 JVET-Q0184 JVET-Q0185 JVET-Q0188 JVET-Q0199 JVET-Q0243 more than 20
PATENTS:
US12231685B2 0.71 2025-02-18 TWI729446B 0.34 2021-06-01 WO2020200298A1 0.30 2020-10-08 US11212523B2 0.28 2021-12-28 EP3866468B1 0.26 2025-11-19 TWI692973B 0.24 2020-05-01 TWI749584B 0.22 2021-12-11 US11240524B2 0.20 2022-02-01
ARCHIVE v2 :
JVET-P0578-v1.docx JVET-P0578_Presentation.pdf
Decisions
This was an HLS contribution and was considered in the HLS BoG; see JVET-P0968.
Citation