VVC/VTM：第14次会议接收提案汇总

JVET-N0671：Support of 4:4:4 and 4:2:2 chroma formats in VVC
为了支持4:4:4 和 4:2:2 格式对CCLM和Affine进行修改。
JVET-N0266 test 2：CE2-related: Disabling bi-prediction or inter-prediction for small blocks-test2
• Disable inter prediction for 44 CUs and disable bi-prediction for 48 and 8*4 CUs: there is 0.08% and 0.11% coding loss in RA and LDB Main10 configurations respectively.
JVET-N0068 :with a max difference of 2 integer positions
JVET-N0271:CE3-1.5: CCLM derived from four neighbouring samples
JVETN0137, test 3-2.1.1:CE3-2.1: Intra chroma partitioning and prediction
方法： Disable 2x2/4x2/2x4 in dual tree only
目的： alleviate intra chroma throughput issues（separate tree中帧内的色度块的处理pipeline太长）；
resolving the dependency issues of small chroma blocks. ???
JVET-N0217：CE3: Affine linear weighted intra prediction (CE3-4.1, CE3-4.2)？？？？
JVET-N0324：CE4: Regular merge flag coding (CE4-1.2.a and CE4-1.2.b)
Test 4-1.2：The modified signalling order is: Regular merge, MMVD, subblock, CIIP, and TPM, rather than MMVD, subblock, CIIP, TPM, and then regular merge.
show -0.01% and -0.07% BD-rate improvements under RA and LDB, respectively
JVET-N0242： version 5-3.2
JVET-N0415：,version 5-4.2
JVET-N0415：version 5-4.2
JVET-N0193：version from CE6-3.1d. CTC for AI and RA, not LB.
JVET-N0054：
JVET-N0188：
JVET-N0280： method 8-4.4a， counter-based limitation with 2 context coded bins. It was later reported by the cross-checker that there were initially some misalignments between text and software, which were however resolved in the upload JVET-N0280v3.
JVET-N0407：CE-9-1.1a
JVET-N0178： CE9-2.4
JVET-N0302：CE10-1.1
JVET-N0340：CE4-related
JVET-N0866：
JVET-N0103-V3
JVET-N0492：CBF flags signalling in VVC，去除hierarchical chroma CBF的冗余。
JVET-N0847
JVET-N0473
JVET-N0246, method 6
JVET-N0600 method 2
JVET-N0220 aspects 2,3, and 4

…好像太多了，有很多小的idea，先写到这里吧，后面再整理这次会议接收的重要提案。

根据最新的标准文档JVET-N1001得到下面的主要接收提案
• JVET-N0067: NAL unit header.
• JVET-N0278: Layer concept without inter-layer referencing.
• JVET-N0349: Decoding parameter set (DPS).
• JVET-N0869: Semantics of DPS ID equal to 0.
• JVET-N0805: APS types (with loop).
• JVET-N0100: Signalling information about long-term reference picture POC LSB.
• JVET-N0100: Conditional signalling of num_ref_idx_active_overwrite_flag.
• JVET-N0288: Inference rule for num_bricks_in_slice_minus1.
• JVET-N0124: Inference rule for single_brick_per_slice_flag and signalling the bottom right brick index as a delta from top left brick index.
• JVET-N0047: Ref pic list for IDR.
• JVET-N0276: 5 new constraint flags.
• JVET-N0276: Sub-profile indication.
• JVET-N0865: Gradual random access (GRA).
• JVET-N0101: CRA decoding process.
• JVET-N0070: Ref pic wraparound cleanups.
• JVET-N0352: Conformance window.
• JVET-N0438: Loop filtering disabling aross virtual boundaries.
• JVET-N0498: Uniform tile partitioning.
• JVET-N0150: WPP with 1-CTU lag.
• JVET-N0120: Editorial improvements to the general decoding process to clarify the difference between a CVS and a bitstream.
• JVET-N0857: Tile and brick partitioning.
• JVET-N0706: Decoded picture hash SEI message.
• JVET-N0494: Dependent RAP indication SEI message.
• JVET-N0353: Buffering period & picture timing SEI messages.
• JVET-N0867: Temporal scalability HRD parameters.
• JVET-N0063: VUI design.
• JVET-N0423 & N0350: HRD starting point.
• JVET-N0266: Remove 4x4 unipred, and 4x8/8x4 bipred regular inter modes, and remove the use of for shared merge candidates in the regular merge list.
• JVET-N0821: 6-tap interpolation filter for affine MC.
• JVET-N0068: Restriction of memory bandwidth consumption of affine MC.
• JVET-N0481: BCW index inheritance for constructed affine merge candidate.
• JVET-N0334: MV clipping for MMVD, DMVR and CPMV of constructed affine merge candidadates.
• JVET-N0407: Disable 8x8/4xN CUs for DMVR.
• JVET-N0178: Implicitly split BDOF application region along 16x16 boundaries.
• JVET-N0146: Disabling BDOF for BCW and WP, and align the condidtion of DMVR and BIO.
• JVET-N0444: Condition check of block height is not equal to 4 for BDOF.
• JVET-N0325: 8-bit fixed precision for BDOF calculations.
• JVET-N0127: MMVD enabling signalling in SPS
• JVET-N0332: disable MVD scaling for MMVD for LTRP.
• JVET-N0448/JVET-N0380: infer the number of MMVD base merge candidate to 1.
• JVET-N0302: CIIP with position-independent weights.
• JVET-N0324: Signal a regular merge flag right after the merge flag and skip flag.
• JVET-N0851/N0447/N0400/N0500: align triangle merge candidate number and regular merge candidate number.
• JVET-N0340: regular merge candidate list is re-used for triangle.
• JVET-N0483: disable sub-block transform when triangle mode is used.
• JVET-M0335: Round MVs toward zero.
• JVET-N0235: Add an SPS-level flag to turn on and off symmetric MVD
• JVET-N0213: Remove TMVP from merge and AMVP list for 4x8 and 8x4 CUs
• JVET-N0868: Revised spec text for DMVR reconciling with software ticket #214

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VVC/VTM：第14次会议接收提案汇总

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