Back to Search Document details
13th Meeting: Marrakech, January 2019 2019-01-14 19:15
Removal of CIP from Multi-hypothesis Intra Prediction
Authors: CHUN-CHI CHEN Qualcomm W.-J. Chien Qualcomm Marta Karczewicz Qualcomm
Abstract
This report proposes to remove the constrained intra prediction (CIP) from multi-hypothesis intra prediction (MHIntra). Specifically, the CIP flag does take effect on the derivation process of reference samples when MHIntra flag is on. It is reported that the proposed method reduces the Y/U/V BD-rate loss from VTM-3.0 with CIP=1 by 0.83%/0.44%/0.43% for Random Access and 0.93%/2.01%/2.09% for Low Delay B.
Meeting Notes
JVET-M0514 Removal of CIP from Multi-hypothesis Intra Prediction [C.-C. Chen, W.-J. Chien, M. Karczewicz (Qualcomm)]

This contribution was presented Thursday 17 January 1830. Chaired by F. Bossen.

This contribution could arguably have been better classified as an intra prediction proposal, but was retained here since it was in this category when planning the agenda.

This report proposes to remove the constrained intra prediction (CIP) scheme from multi-hypothesis intra prediction (MHIntra). Specifically, the CIP flag was proposed to not take effect on the derivation process of reference samples when MHIntra flag is on. It was reported that the proposed method reduces the Y/U/V BD-rate loss from VTM-3.0 with CIP=1 by 0.83%/0.44%/0.43% for Random Access and 0.93%/2.01%/2.09% for Low Delay B.

It was remarked that there was no CIP in the current design, and had been no agreement to add it.

No action was thus taken on the proposal at this time.

References:
JVET-L0100 JVET-L1001 JVET-L1010
Cited:
JVET-M0667 X
ARCHIVE v3 :
JVET-M0514.docx JVET-M0514_r1.pdf JVET-M0514_Test-a.xlsm JVET-M0514_Test-b.xlsm
Decisions
No action was thus taken on the proposal at this time.
Citation