Back to Search Document details
39th Meeting: Daejeon, KR, June 2025 2025-06-26 10:25
EE2-related: Candidate replacement in MPM list
Authors: H. Tian Shandong Univ. Yiling Gao Shandong Univ. S. Li Hisense J. Lei Hisense Bin Li Hisense Fang Xing Hisense Pengfei Han Hisense yanbo gao
Abstract
In EE2, the MPM list is constructed based on the best RD mode of neighbors. In MPM list, it already has an advantage of bitrate saving. Thus the candidates in MPM list should be the mode of neighbors with the lowest distortion. In this proposal, a candidate replacement in MPM list is presented based on the mode of neighbors with the lowest distortion.
Meeting Notes
JVET-AM0105 EE2-related: Candidate replacement in MPM list [H. Tian, Y. Gao, S. Li, J. Lei (Shandong Univ.), B. Li, F. Xing, P. Han (Hisense)] [late]

In EE2, the MPM list is constructed based on the best RD mode of neighbours. In MPM list, it already has an advantage of bitrate saving. Thus the candidates in MPM list should be the mode of neighbours with the lowest distortion. In this proposal, a candidate replacement in MPM list is presented based on the mode of neighbours with the lowest distortion.

On top of ECM-13.0, results of the proposed method are:

AI: %, %, %, EncT: % , DecT: %.

All Intra Main 10

Over ECM-13.0

Y

U

V

EncT

DecT

EncVmPeak

DecVmPeak

Class A1

Class A2

Class B

-0.02%

-0.06%

0.00%

111%

Class C

-0.01%

0.02%

0.03%

107%

Class E

-0.09%

-0.14%

0.03%

124%

Overall

Class D

-0.01%

-0.20%

-0.12%

113%

Class F

0.01%

0.10%

0.05%

123%

According to current results, the tradeoff of compression vs. encoder runtime is not acceptable. This happens likely due to increased number of mode checks. Further study to demonstrate if compression benefit with better tradeoff can be achieved.

It is also noted that the results are compared to an outdated version of ECM.

ARCHIVE :
JVET-AM0105.docx
Decisions
noted
It is also noted that the results are compared to an outdated version of ECM.
Citation