JPWO2020263493A5 - - Google Patents
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- JPWO2020263493A5 JPWO2020263493A5 JP2021570780A JP2021570780A JPWO2020263493A5 JP WO2020263493 A5 JPWO2020263493 A5 JP WO2020263493A5 JP 2021570780 A JP2021570780 A JP 2021570780A JP 2021570780 A JP2021570780 A JP 2021570780A JP WO2020263493 A5 JPWO2020263493 A5 JP WO2020263493A5
- Authority
- JP
- Japan
- Prior art keywords
- block
- chroma
- picture
- luma samples
- boundary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Claims (16)
ビットストリームを受信すること、及び
前記ビットストリームのコード化された情報を使用して、1つ又は複数のピクチャを復号すること、
を含み、
前記復号することは、
第2のブロックに関連する複数のルマサンプルの平均値を決定することであって、前記第2のブロックは、前記1つ又は複数のピクチャのうちのピクチャに関連する、決定すること、
前記平均値に基づいて、前記ピクチャに関連する第1のブロックのためのクロマスケール因子を決定すること、及び
前記クロマスケール因子を使用して、前記第1のブロックのクロマ残差スケーリングを行うこと
を含み、
前記クロマスケール因子は、前記第2のブロックに関連する複数のルマサンプルに基づいて決定され、
前記複数のルマサンプルのうちの第1のルマサンプルがピクチャの境界の外にある場合、前記複数のルマサンプルを使用して前記クロマスケール因子を決定する前に、前記第1のサンプルの値は、前記複数のルマサンプルのうち、前記ピクチャの前記境界上にある第2のサンプルの値と等しい値に設定される、
方法。 A method for decoding a bitstream to output one or more pictures of a video stream, comprising:
receiving a bitstream and decoding one or more pictures using coded information in the bitstream;
including
The decrypting includes:
determining an average value of a plurality of luma samples associated with a second block, the second block associated with a picture of the one or more pictures;
determining a chromascale factor for a first block associated with the picture based on the average value; and using the chromascale factor to perform chroma residual scaling of the first block. including
the chroma scale factor is determined based on a plurality of luma samples associated with the second block;
Before determining the chroma scale factor using the plurality of luma samples, if the first luma sample of the plurality of luma samples is outside a picture boundary, the value of the first sample is , set to a value equal to the value of a second sample of the plurality of luma samples that lies on the boundary of the picture;
Method.
ピクチャ内の第1のブロック及び第2のブロックを表すデータを受信することであって、前記データは、前記第1のブロックに関連する複数のクロマサンプル及び前記第2のブロックに関連する複数のルマサンプルを含む、受信すること、
前記第2のブロックに関連する前記複数のルマサンプルの平均値を決定すること、
前記平均値に基づいて、前記第1のブロックのためのクロマスケール因子を決定すること、及び
前記クロマスケール因子を使用して、前記第1のブロックに関連する前記複数のクロマサンプルを処理すること
を含む方法を使用して復号可能である、非一時的コンピュータ可読媒体。 A non-transitory computer-readable medium storing a bitstream associated with a video sequence, the bitstream comprising:
Receiving data representing a first block and a second block in a picture, the data comprising a plurality of chroma samples associated with the first block and a plurality of chroma samples associated with the second block. to receive, including luma samples;
determining an average value of the plurality of luma samples associated with the second block;
determining a chroma-scale factor for the first block based on the average value; and using the chroma-scale factor to process the plurality of chroma samples associated with the first block. A non-transitory computer-readable medium that is decryptable using a method comprising:
映像シーケンスを受信すること、
前記映像シーケンスの1つ又は複数のピクチャを符号化すること、及び
ビットストリームを生成すること
を含み、
前記符号化することは、
第1のブロックに関連する複数のクロマサンプル及び第2のブロックに関連する複数のルマサンプルを決定することであって、前記複数のルマサンプルのうちの第1のルマサンプルがピクチャの境界の外にある場合、前記第1のサンプルの値は、前記複数のルマサンプルのうち、前記ピクチャの前記境界上にある第2のサンプルの値と等しい値に設定される、決定すること、
前記複数のルマサンプルに基づいて前記第1のコード化ブロックのためのクロマスケール因子を決定すること、及び
前記クロマスケール因子を使用して、前記第1のコード化ブロックに関連する前記複数のクロマサンプルを処理すること
を含む、方法。 A method for encoding a video sequence into a bitstream, comprising:
receiving a video sequence;
encoding one or more pictures of the video sequence and generating a bitstream;
The encoding includes:
determining a plurality of chroma samples associated with a first block and a plurality of luma samples associated with a second block, wherein a first luma sample of the plurality of luma samples is outside a picture boundary; the value of the first sample is set equal to the value of a second sample of the plurality of luma samples that is on the boundary of the picture;
determining a chroma-scale factor for the first coded block based on the plurality of luma samples; and using the chroma-scale factor, the plurality of chroma-scale factors associated with the first coded block. A method comprising processing a sample.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962865815P | 2019-06-24 | 2019-06-24 | |
US62/865,815 | 2019-06-24 | ||
PCT/US2020/035049 WO2020263493A1 (en) | 2019-06-24 | 2020-05-29 | Method and system for processing luma and chroma signals |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022538747A JP2022538747A (en) | 2022-09-06 |
JPWO2020263493A5 true JPWO2020263493A5 (en) | 2023-05-31 |
Family
ID=74038645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021570780A Pending JP2022538747A (en) | 2019-06-24 | 2020-05-29 | Method and system for processing luma and chroma signals |
Country Status (6)
Country | Link |
---|---|
US (3) | US11051022B2 (en) |
EP (1) | EP3977737A4 (en) |
JP (1) | JP2022538747A (en) |
KR (1) | KR20220024912A (en) |
CN (1) | CN114375582A (en) |
WO (1) | WO2020263493A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220061247A (en) * | 2019-09-29 | 2022-05-12 | 에이치에프아이 이노베이션 인크. | Method and apparatus of combined inter and intra prediction using different chroma formats for video coding |
KR20220146491A (en) | 2020-03-11 | 2022-11-01 | 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 | Adaptive loop filtering |
US11601657B2 (en) * | 2020-04-02 | 2023-03-07 | Qualcomm Incorporated | LUMA mapping with chroma scaling (LMCS) in video coding |
US11330266B2 (en) * | 2020-05-18 | 2022-05-10 | Tencent America LLC | Signaling method for chroma intra prediction mode |
WO2021244420A1 (en) * | 2020-05-31 | 2021-12-09 | Beijing Bytedance Network Technology Co., Ltd. | Palette mode with local dual tree modetype definition |
US11800102B2 (en) * | 2021-08-27 | 2023-10-24 | Mediatek Inc. | Low-latency video coding methods and apparatuses for chroma separated tree |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8761531B2 (en) * | 2009-07-09 | 2014-06-24 | Qualcomm Incorporated | Image data compression involving sub-sampling of luma and chroma values |
WO2013006986A1 (en) * | 2011-07-12 | 2013-01-17 | Intel Corporation | Luma-based chroma intra prediction |
WO2013102293A1 (en) * | 2012-01-04 | 2013-07-11 | Mediatek Singapore Pte. Ltd. | Improvements of luma-based chroma intra prediction |
US9686561B2 (en) * | 2013-06-17 | 2017-06-20 | Qualcomm Incorporated | Inter-component filtering |
US9648330B2 (en) * | 2013-07-15 | 2017-05-09 | Qualcomm Incorporated | Inter-color component residual prediction |
US10397607B2 (en) * | 2013-11-01 | 2019-08-27 | Qualcomm Incorporated | Color residual prediction for video coding |
SG11201706978TA (en) * | 2015-03-02 | 2017-09-28 | Hfi Innovation Inc | Method and apparatus for intrabc mode with fractional-pel block vector resolution in video coding |
US10623740B2 (en) | 2015-09-23 | 2020-04-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Determination of QP values |
US10484712B2 (en) * | 2016-06-08 | 2019-11-19 | Qualcomm Incorporated | Implicit coding of reference line index used in intra prediction |
WO2018016381A1 (en) * | 2016-07-22 | 2018-01-25 | Sharp Kabushiki Kaisha | Systems and methods for coding video data using adaptive component scaling |
US10778978B2 (en) * | 2017-08-21 | 2020-09-15 | Qualcomm Incorporated | System and method of cross-component dynamic range adjustment (CC-DRA) in video coding |
US20200288126A1 (en) * | 2019-03-08 | 2020-09-10 | Qualcomm Incorporated | Reshaping filter average calculation for video coding |
US20200288159A1 (en) * | 2019-03-08 | 2020-09-10 | Qualcomm Incorporated | Combined residual coding in video coding |
US11451826B2 (en) * | 2019-04-15 | 2022-09-20 | Tencent America LLC | Lossless coding mode and switchable residual coding |
-
2020
- 2020-05-29 KR KR1020227002429A patent/KR20220024912A/en unknown
- 2020-05-29 US US16/887,048 patent/US11051022B2/en active Active
- 2020-05-29 EP EP20831392.4A patent/EP3977737A4/en active Pending
- 2020-05-29 WO PCT/US2020/035049 patent/WO2020263493A1/en unknown
- 2020-05-29 CN CN202080043294.XA patent/CN114375582A/en active Pending
- 2020-05-29 JP JP2021570780A patent/JP2022538747A/en active Pending
-
2021
- 2021-06-28 US US17/360,625 patent/US11711517B2/en active Active
-
2023
- 2023-06-09 US US18/332,244 patent/US20230353745A1/en active Pending
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