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37th Meeting: Geneva, CH, January 2025 2025-01-15 16:47
Non-EE2: Improvements on inter AMVP candidate list construction
Authors: S. Park SKKU H. Jeong SKKU B. Jeon SKKU
Abstract
This contribution proposes to put zero MV into the AMVP candidate list unless the list is already full so that the zero MV can be subjected to MVP refinement and reordering process. The proposed method achieves BDBR gain compared to ECM-15.0 as follows:
Meeting Notes
JVET-AK0137 Non-EE2: Improvements on inter AMVP candidate list construction [S. Park, H. Jeong, B. Jeon (SKKU)] [late]

This contribution proposes to put zero MV into the AMVP candidate list unless the list is already full so that the zero MV can be subjected to MVP refinement and reordering process. The proposed method achieves BDBR gain compared to ECM-15.0 as follows:

RA: -0.01% (Y) / -0.03% (Cb) / 0.01% (Cr), Enc: xxx.x%, Dec: xxx.x%.

LDB: -0.01% (Y) / -0.12% (Cb) / 0.25% (Cr), Enc: xxx.x%, Dec: xxx.x%

JVET-AK0254 is related and was presented before presenting this proposal. This is a study showing that the zero MV is often selected in AMVP candidate list.

The maximum size of the list is not increased, but one more candidate needs to be checked when the list is not full yet, at the last position of the list after reordering.

Significantly more gain in screen content classes, also loss in some classes.

No interest was expressed for an EE on this. As it is beneficial for screen content, it was suggested to further study if a better position of the zero candidate in the list could be found, dependent on content characteristics.

Cited:
JVET-AK0270 X
ARCHIVE :
JVET-AK0137-v2.docx JVET-AK0137-v2.pdf JVET-AK0137-v2.xlsm
Decisions
No interest was expressed for an EE on this. As it is beneficial for screen content, it was suggested to further study if a better position of the zero candidate in the list could be found, dependent on content characteristics.
Citation