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CE7-related: Simplified two-pass transform-skip residual coding
Abstract
This contribution proposes a two-pass transform skip (TS) residual coding method. The proposed method reduces the worst case number of checking of whether to perform bypass or context coding from 8 per coefficient position to 1 per coefficient position. Similar to VVC6 transform residual coding, after reaching to the maximum limit of the context coded bin, the proposed method switches to the Rice-Golomb coding. Following results are reported.
JVET-P0397 CE7-related: Simplified two-pass transform-skip residual coding [M. G. Sarwer, R. L. Liao, J. Luo, Y. Ye (Alibaba)]
This contribution proposes a two-pass transform skip (TS) residual coding method. The proposed method reduces the worst case number of checking of whether to perform bypass or context coding from 8 per coefficient position to 1 per coefficient position. Similar to VVC6 transform residual coding, after reaching to the maximum limit of the context coded bin, the proposed method switches to the Rice-Golomb coding. Following results are reported.
- CTC QP:
- Overall: 0.00% (AI), 0.01% (RA), -0.05% (LB) luma BD-rate
- Class SCC: 0.25% (AI), 0.17% (RA), -0.03% (LB) luma BD-rate
- Low QP:
- Class SCC: -0.69% (AI), -1.46% (RA), -0.46% (LB) luma BD-rate
There was no need for presentation after CE7-1.3b* adoption.
Cited:
PATENTS:
EP4668752A2
0.34
2025-12-24
US11425427B2
0.32
2022-08-23
JP2025113279A
0.30
2025-08-01
US12445651B2
0.28
2025-10-14
RS67292B1
0.26
2025-11-28
US12549728B2
0.24
2026-02-10
US20250337888A1
0.22
2025-10-30
WO2021050193A1
0.20
2021-03-18
Decisions
adopted
There was no need for presentation after CE7-1.3b* adoption.
Citation