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40th Meeting: Geneva, CH, October 2025 2025-10-04 10:58
AhG 11/AHG 14: Harmonization of Deep Reference Frame (DRF) with RPR in NNVC14.1
Authors: Nisha Bhaskar Huawei Timofey Solovyev Huawei Elena Alshina Huawei
Abstract
In NNVC14.1, it was observed that when the tools Deep Reference Frame (DRF) and RPR were enabled in combination, the encoder crashed for some of the test sequences. Several bugs in the DRFG software were detected and fixed. These bugs occurred in relation to the DRF frames when RPR is applied. The fixes are available as a merge request. This input contribution explains details of the modifications needed to enable simultaneous functionalities DRF and RPR in NNVC.
Meeting Notes
JVET-AN0209 AhG 11/AHG 14: Harmonization of Deep Reference Frame (DRF) with RPR in NNVC14.1 [N. Bhaskar, T. Solovyev, E. Alshina (Huawei)]

In NNVC14.1, it was observed that when the tools Deep Reference Frame (DRF) and RPR were enabled in combination, the encoder crashed for some of the test sequences. Several bugs in the DRFG software were detected and fixed. These bugs occurred in relation to the DRF frames when RPR is applied. The fixes are available as a merge request. This input contribution explains details of the modifications needed to enable simultaneous functionalities DRF and RPR in NNVC.

This contribution resolves the problem that DRF so far requires pictures of identical size to generate the new reference. RPR filters are used for re-sizing.

It is noted that this was not included in the CfE response JVET-AN0212, as it would be a normative change of the NNVC software.

Decision: Adopt JVET-AN0209 (non-CTC). Software coordinators will investigate appropriateness of the change by the time of merge request.

JVET-AN0209 (non-CTC). Software coordinators were to investigate appropriateness by time of merge request.

JVET-AN0215 (non-CTC). Also needs description in JVET-AN2019.

ARCHIVE :
AN0209 Harmonization of Deep Reference Frame (DRF) with RPR in NNVC14.1.pptx CfE_Comparison_GoPbasedRPR_BugFixes.xlsm CfE_Comparison_RPR_DRF_BugFixes.xlsm CTC_Results_DRF_afterFix.xlsm CTC_Results_RPR+DRF_afterFix.xlsm CTC_Results_RPR+DRF_beforeFix.xlsm CTC_Results_RPR_afterFix.xlsm CTC_ToolsOff_Anchor__fdf5fad3.csv JVET-AN0209-v4-clean.docx JVET-AN0209-v4.docx
Decisions
adopted
Adopt JVET-AN0209 (non-CTC). Software coordinators will investigate appropriateness of the change by the time of merge request
JVET-AN0215 (non-CTC). Also needs description in JVET-AN2019.
Citation