JVET-N0866 Non-CE6: Combined Test of JVET-N0172/JVET-N0375/JVET-N0419/JVET-N0420 on Unification of Implicit Transform Selection [H. Gao, S. Esenlik, B. Wang, A. M. Kotra, J. Chen (Huawei), H. E. Egilmez, A. K. Ramasubramonian, A. Said, N. Hu, V. Seregi, G. Van-der Auwera, M. Karczewicz (Qualcomm), S.-C. Lim, J. Kang, J. Lee, H. Lee, H. Y. Kim (ETRI)] [late]
In VVC Draft 4.0, two separate implicit transform selection methods based on intra mode and block-shape are introduced for ISP and implicit MTS, respectively. This joint contribution describes the unified design adopted in the 14th JVET meeting, where the components of the unified design are independently proposed and tested in JVET-N0172, JVET-N0375, JVET-N0419 and JVET-N0420:
- The implicit MTS part of the adoption is proposed and tested in JVET-N0172 and JVET-N0419.
- The transform derivation for ISP is proposed and tested in JVET-N0172, JVET-N0375 and JVET-N0420.
The adopted unified method provides -0.01%, 0.00%, and -0.01% coding efficiency over VTM4.0 for AI, RA, and LDB cases under CTC, respectively. As compared to the current implicit MTS design in VTM-4.0, -0.11%, -0.02%, and 0.02% are achieved for AI, RA, and LDB cases, respectively.
Was presented in Track A Tue 26 morning
Text in v2 was presented and confirmed to be simplified as suggested.
Decision: Adopt JVET-N0866
CE7 related – Quantization and coefficient coding (14)
Contributions in this category were discussed Thursday 21 March 1600–1945 (Track A chaired by JRO).