Search Results for "JVET-M0066"
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Abstract
An updated version of Flexible Tile Partitioning for VTM-3.0. It is ported from JVET-L0359 version implemented on VTM-2.0 and added partial supports for new features in VTM-3.0. The experimental results with flexible tile partitioning which tile size unit is set to 16 reportedly show that luma BD-rate coding losses on average are 0.69%, 1.64% and 2.36% for All Intra, Random Access and Low Delay configuration respectively under the common test condition (CTC) for SDR sequences.
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JVET-M0066 AHG12: Flexible Tile Partitioning [Y. Yasugi, T. Ikai (Sharp)]
References:
PATENTS:
JP6580562B2
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2019-09-25
US20230308639A1
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US11665339B2
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EP3662664B1
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US11172208B2
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US12088847B2
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US20250159169A1
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KR102135997B1
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Decisions
JVET-M0066 AHG12: Flexible Tile Partitioning [Y. Yasugi, T. Ikai (Sharp)]
Citation
Abstract
This document reports the cross-check results for the results reported in input document JVET-L0066: AHG12: Flexible Tile Partitioning. The cross-checked contribution allows for flexible tile partitioning with granularity higher than CTU. The source code as well as the configuration for performed tests were provide by the proponent Sharp.
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JVET-M0423 Cross-check of JVET-M0066: AHG12: Flexible Tile Partitioning [A. Wieckowski (HHI)]
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Decisions
JVET-M0423 Cross-check of JVET-M0066: AHG12: Flexible Tile Partitioning [A. Wieckowski (HHI)]
Citation
Abstract
This contribution proposes software modifications for integrating encoder-only progressive intra refresh in the VTM model, in accordance with the mandates of AHG14 “Progressive intra refresh”. The proposed software modifications are the use of flexible tile partitioning in JVET-M0066 [5] and the methods described in JVET-L0079 “AHG14: Study of methods for progressive intra refresh” [4].
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JVET-M0197 AHG14: Software for ultra low-latency encoding [K. Kazui (Fujitsu)]
Presented Thursday 17 January 1850 (chaired by F. Bossen).
This contribution proposes software modifications for integrating encoder-only progressive intra refresh in the VTM model, in accordance with the mandates of AHG14 “Progressive intra refresh”. The proposed software modifications are the use of flexible tile partitioning in JVET-M0066 and the methods described in JVET-L0079 “AHG14: Study of methods for progressive intra refresh”.
Version 2 contains two additional test results. The first one is the comparison with low-delay B. The second one is the comparison with the proposal with normative changes.
Each CTU row is partitioned into 2 tiles, a “refreshed tile” and a “not-refreshed tile”.
Significant overhead was reported: +29% for LDB (RA results were incomplete).
The contribution suggested some normative changes to reduce the overhead.
This proposes to use the provided software for future AHG14 experiments.
No action was taken on this except to encourage AHG14 to consider / decide on the desirability and use of the proposed software. It could be uploaded to an AHG14 space on Gitlab.
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Cited:
Decisions
No action was taken on this except to encourage AHG14 to consider / decide on the desirability and use of the proposed software. It could be uploaded to an AHG14 space on Gitlab.
Citation
Abstract
Flexible tile splitting is proposed in JVET K0155, JVET-L0359 and JVET-M0066 as the possibility to define splitting of tiles with finer granularity than the CTU size. The granularity is defined as the tile unit. This contribution proposes modifications that are claimed to improve the signalling for the flexible tile splitting.
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JVET-M0376 AHG12: On signalling of flexible tiles [M. Damghanian, R. Sjöberg, M. Pettersson (Ericsson)]
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Decisions
JVET-M0376 AHG12: On signalling of flexible tiles [M. Damghanian, R. Sjöberg, M. Pettersson (Ericsson)]
Citation
Abstract
The purpose of this Core Experiment (CE) is to investigate the coding tools related to neural network (NN) based loop filter on top of the Test Model. In this CE, the impact of the position of the NN based filter in the filter chain, the benefit of the CTU level NN filter adaptive on/off switching, and the generalization capability when QP is different from the training QP will be investigated. In addition to the encoder and decoder run-times, the network information, e.g., network parameter numbers, number of layers, and convolution kernel size will also be evaluated. The list of tools and experiments to be performed are detailed in this document.
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JVET-M1033 Description of Core Experiment 13 (CE13): Neural-network based loop filtering [Y. Li, S. Liu, K. Kawamura]
Future meeting plans, expressions of thanks, and closing of the meeting
Future meeting plans were established according to the following guidelines:
Meeting under ITU-T SG 16 auspices when it meets (starting meetings on the Tuesday of the first week and closing it on the Wednesday of the second week of the SG 16 meeting – a total of 9 meeting days), and
Otherwise meeting under ISO/IEC JTC 1/SC 29/WG 11 auspices when it meets (starting meetings on the Wednesday prior to such meetings and closing it at lunchtime on the last day of the WG 11 meeting – a total of 9.5 meeting days).
In cases where an exceptionally high workload is expected for a meeting, an earlier starting date may be defined.
Some specific future meeting plans (to be confirmed) were established as follows:
T...
Decisions
Jian Qing Zhu (Fujitsu R&D Center)
Citation
Abstract
This contribution proposes flexible unit size tile with implementation friendly restriction, which allows tiling with tile size unit less than CTU size. In the tile BoG, the implementation difficulty for less than CTU size and loop filter control for 360 video has been discussed. In this contribution, it is asserted that CTU alignment is too restricted to enable important tile use cases. It is also argued that the proposed specific implementation friendly restrictions alleviate the concerns implementation cost increase.
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JVET-M0875 Request for flexible unit size tile with implementation friendly restriction [T. Ikai, Y. Yasugi (Sharp), G. Bang (ETRI), Y.-W. Chen, X. Wang (Kwai Inc.), M. Coban (Qualcomm), C.-C. Lin (ITRI), P.-H. Lin (Foxconn), A. Ichigaya (NHK), K. Kawamura (KDDI), K. Kazui (Fujitsu), R. Sjöberg (Ericsson), R. Skupin, K. Sühring, Y. Sanchez, T. Schierl (HHI), L. Zhang (Bytedance)] [late]
This contribution proposes flexible unit size tile with certain restrictions, allowing tiling with tile size unit that is not a multiple of the CTU size. In the tile BoG, the implementation difficulty for less than CTU size and loop filter control for 360° video has been discussed. In this contribution, it is asserted that CTU alignment is too restricted to enable important tile use cases. It is also argued that the proposed specific restrictions alleviate the concerns implementation cost increase.
In JVE...
References:
PATENTS:
US10203762B2
0.34
2019-02-12
CN106464871B
0.32
2019-04-23
US9451254B2
0.30
2016-09-20
EP3155560B1
0.28
2020-05-20
CN106464872B
0.26
2019-07-26
CN106464873B
0.24
2019-07-05
US11595667B2
0.22
2023-02-28
US20200267390A1
0.20
2020-08-20
Decisions
Option 3 of JVET-M0261 is effectively another way to achieve the flexible tiling functionality, through dividing pictures into rectangular sub-pictures and each sub-picture may refer to its own PPS and may hence have its own tile partitioning.
Citation
Abstract
The document summarizes activities of AHG on High-level parallelism and coded picture regions between the 12th and the 13th JVET meetings.
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JVET-M0012 JVET AHG report: High-level parallelism and coded picture regions (AHG12) [T. Ikai, M. M. Hannuksela, R. Sjöberg, R. Skupin, W. Wan, Y.-K. Wang, S. Wenger]
The document summarized activities of AHG on High-level parallelism and coded picture regions between the 12th and the 13th JVET meetings.
Related contributions to this meeting were categorized as follows:
Flexible size tiles
JVET-M0066 AHG12: Flexible Tile Partitioning [Y. Yasugi, T. Ikai (Sharp)]
JVET-M0423 Cross-check of JVET-M0066: AHG12: Flexible Tile Partitioning [A. Wieckowski (HHI)]
JVET-M0376 AHG12: On signalling of flexible tiles [M. Damghanian, R. Sjöberg, M. Pettersson (Ericsson)]
JVET-M0459 AHG12: On tiles with partial CTUs [R. Skupin, K. Suehring, Y. Sanchez, T. Schierl (HHI)]
JVET-M0527 AHG12: Comments on Tiles and Flexible Tile Partitioning [W. Wan, M. Zhou, T. Hellman, B. Heng, P. Chen (Broadcom)]
JVET-M053...
References:
JVET-M0066
JVET-M0070
JVET-M0071
JVET-M0121
JVET-M0123
JVET-M0129
JVET-M0130
JVET-M0134
JVET-M0136
JVET-M0137
JVET-M0155
JVET-M0160
JVET-M0209
JVET-M0261
JVET-M0300
JVET-M0325
JVET-M0373
JVET-M0374
JVET-M0375
JVET-M0376
JVET-M0388
JVET-M0416
JVET-M0423
JVET-M0430
JVET-M0445
JVET-M0459
JVET-M0527
JVET-M0530
JVET-M0536
JVET-M0593
Decisions
The AHG recommended to review the related contributions.
Citation