JPWO2020177659A5 - - Google Patents
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- JPWO2020177659A5 JPWO2020177659A5 JP2021551506A JP2021551506A JPWO2020177659A5 JP WO2020177659 A5 JPWO2020177659 A5 JP WO2020177659A5 JP 2021551506 A JP2021551506 A JP 2021551506A JP 2021551506 A JP2021551506 A JP 2021551506A JP WO2020177659 A5 JPWO2020177659 A5 JP WO2020177659A5
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- 239000000523 sample Substances 0.000 claims 22
- 239000012723 sample buffer Substances 0.000 claims 18
- 238000006243 chemical reaction Methods 0.000 claims 14
- 238000000034 method Methods 0.000 claims 12
- 238000009795 derivation Methods 0.000 claims 4
- 238000001914 filtration Methods 0.000 claims 4
- 230000009466 transformation Effects 0.000 claims 2
- 238000003672 processing method Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
Claims (14)
映像の現在の映像ブロックと前記映像のビットストリームとの変換のために、第１のコーディングモードが前記現在の映像ブロックに適用されることを判定することと、
前記現在の映像ブロックにおける第１のブロックベクトル（ＢＶｘ，ＢＶｙ）を導出することと、
前記第１のブロックベクトル及びサンプルバッファに基づいて前記現在の映像ブロックの予測サンプルを生成することであって、フィルタリング演算を適用せずに前の映像ブロックの再構成サンプルを前記サンプルバッファに記憶し、前記第１のコーディングモードにおいて前記現在の映像ブロックを含む同じピクチャから前記予測サンプルを導出し、前記サンプルバッファのビット深度は前記変換時に使用される再構成バッファのビット深度と同一である、生成することと、
前記予測サンプルに基づいて前記変換を行うことと、
を含む方法。 It ’s a visual media processing method.
Determining that the first coding mode is applied to the current video block for conversion between the current video block of the video and the bitstream of the video.
Derivation of the first block vector (BVx, BVy) in the current video block and
By generating a prediction sample of the current video block based on the first block vector and the sample buffer, the reconstruction sample of the previous video block is stored in the sample buffer without applying a filtering operation. The predicted sample is derived from the same picture containing the current video block in the first coding mode, and the bit depth of the sample buffer is the same as the bit depth of the reconstruction buffer used during the conversion. To do and
Performing the conversion based on the prediction sample and
How to include.
請求項１に記載の方法。 The sample buffer is updated in the first order,
The method according to claim 1.
請求項２に記載の方法。 The first order is the order of the reconstructed samples at the time of conversion.
The method according to claim 2.
請求項２に記載の方法。 The first order is based on the first-in first-out rule.
The method according to claim 2.
請求項１～４のいずれか１項に記載の方法。 If the sample buffer is full, the earliest sample added to the sample buffer has been replaced with the latest reconstructed sample.
The method according to any one of claims 1 to 4.
前記サンプルバッファのサイズは、ビットストリーム表現に含まれるフィールドに基づいて示される、
請求項１～５のいずれか１項に記載の方法。 The sample buffer is a rectangular area.
The size of the sample buffer is indicated based on the fields contained in the bitstream representation.
The method according to any one of claims 1 to 5.
請求項１～６のいずれか１項に記載の方法。 A part of the previous video block is arranged in a coding tree block different from the current coding tree block including the current video block.
The method according to any one of claims 1 to 6.
請求項１～７のいずれか一項に記載の方法。 A position conversion operation is applied to (x0 + BVx, y0 + BVy) to generate a predicted sample of the first sample (x0, y0) in the current video block, and the position of the first predicted sample in the sample buffer. To derive,
The method according to any one of claims 1 to 7.
前記第１の予測サンプルの前記位置は、（（ｘ０＋ＢＶｘ）ｍｏｄＭ、（ｙ０＋ＢＶｙ）ｍｏｄＮ）で表され、
前記ｍｏｄは、モジュロ関数である、
請求項８に記載の方法。 The position conversion operation is a modulo operation, and is
The position of the first prediction sample is represented by ((x0 + BVx) modM, (y0 + BVy) modN).
The mod is a modulo function,
The method according to claim 8.
請求項１～９のいずれか１項に記載の方法。 The conversion comprises encoding the current video block into a bitstream.
The method according to any one of claims 1 to 9.
請求項１～９のいずれか１項に記載の方法。 The conversion comprises decoding the current video block from the bitstream.
The method according to any one of claims 1 to 9.
前記プロセッサは、前記命令を実行することで、
映像の現在の映像ブロックと前記映像のビットストリームとの変換のために、第１のコーディングモードが前記現在の映像ブロックに適用されることを判定することと、
前記現在の映像ブロックにおける第１のブロックベクトル（ＢＶｘ，ＢＶｙ）を導出することと、
前記第１のブロックベクトル及びサンプルバッファに基づいて前記現在の映像ブロックの予測サンプルを生成することであって、フィルタリング演算を適用せずに前の映像ブロックの再構成サンプルを前記サンプルバッファに記憶し、前記第１のコーディングモードにおいて前記現在の映像ブロックを含む同じピクチャから前記予測サンプルを導出し、前記サンプルバッファのビット深度は前記変換時に使用される再構成バッファのビット深度と同一である、生成することと、
前記予測サンプルに基づいて前記変換を行うことと、
を実行する装置。 A video data processing device that includes a processor and non-temporary memory with instructions.
The processor executes the instruction to execute the instruction.
Determining that the first coding mode is applied to the current video block for conversion between the current video block of the video and the bitstream of the video.
Derivation of the first block vector (BVx, BVy) in the current video block and
By generating a prediction sample of the current video block based on the first block vector and the sample buffer, the reconstruction sample of the previous video block is stored in the sample buffer without applying a filtering operation. The predicted sample is derived from the same picture containing the current video block in the first coding mode, and the bit depth of the sample buffer is the same as the bit depth of the reconstruction buffer used during the conversion. To do and
Performing the conversion based on the prediction sample and
A device that runs.
前記命令は、プロセッサに、
映像の現在の映像ブロックと前記映像のビットストリームとの変換のために、第１のコーディングモードが前記現在の映像ブロックに適用されることを判定することと、
前記現在の映像ブロックにおける第１のブロックベクトル（ＢＶｘ，ＢＶｙ）を導出することと、
前記第１のブロックベクトル及びサンプルバッファに基づいて前記現在の映像ブロックの予測サンプルを生成することであって、フィルタリング演算を適用せずに前の映像ブロックの再構成サンプルを前記サンプルバッファに記憶し、前記第１のコーディングモードにおいて前記現在の映像ブロックを含む同じピクチャから前記予測サンプルを導出し、前記サンプルバッファのビット深度は前記変換時に使用される再構成バッファのビット深度と同一である、生成することと、
前記予測サンプルに基づいて前記変換を行うことと、を実行させる、
記憶媒体。 A non-temporary computer-readable storage medium that stores instructions
The instruction is given to the processor.
Determining that the first coding mode is applied to the current video block for conversion between the current video block of the video and the bitstream of the video.
Derivation of the first block vector (BVx, BVy) in the current video block and
By generating a prediction sample of the current video block based on the first block vector and the sample buffer, the reconstruction sample of the previous video block is stored in the sample buffer without applying a filtering operation. The predicted sample is derived from the same picture containing the current video block in the first coding mode, and the bit depth of the sample buffer is the same as the bit depth of the reconstruction buffer used during the conversion. To do and
Performing the transformation based on the prediction sample and executing the transformation.
Storage medium.
前記方法は、
第１のコーディングモードが現在の映像ブロックに適用されることを判定することと、
前記現在の映像ブロックにおける第１のブロックベクトル（ＢＶｘ，ＢＶｙ）を導出することと、
前記第１のブロックベクトル及びサンプルバッファに基づいて前記現在の映像ブロックの予測サンプルを生成することであって、フィルタリング演算を適用せずに前の映像ブロックの再構成サンプルを前記サンプルバッファに記憶し、前記第１のコーディングモードにおいて前記現在の映像ブロックを含む同じピクチャから前記予測サンプルを導出し、前記サンプルバッファのビット深度は前記変換時に使用される再構成バッファのビット深度と同一である、生成することと、
前記予測サンプルに基づいて前記ビットストリームを生成することと、を含む、
記録媒体。 A non-temporary computer-readable recording medium that records a bitstream of video produced by a method performed by a video processor.
The method is
Determining that the first coding mode applies to the current video block,
Derivation of the first block vector (BVx, BVy) in the current video block and
By generating a prediction sample of the current video block based on the first block vector and the sample buffer, the reconstruction sample of the previous video block is stored in the sample buffer without applying a filtering operation. The predicted sample is derived from the same picture containing the current video block in the first coding mode, and the bit depth of the sample buffer is the same as the bit depth of the reconstruction buffer used during the conversion. To do and
Including generating the bitstream based on the prediction sample.
recoding media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023210570A JP2024028972A (en) | 2019-03-01 | 2023-12-13 | Direction-based prediction for intra block copy in video coding |
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| CNPCT/CN2019/076695 | 2019-03-01 | ||
| CN2019076695 | 2019-03-01 | ||
| PCT/CN2020/077415 WO2020177659A1 (en) | 2019-03-01 | 2020-03-02 | Direction-based prediction for intra block copy in video coding |
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| JP2022522739A JP2022522739A (en) | 2022-04-20 |
| JPWO2020177659A5 true JPWO2020177659A5 (en) | 2022-06-21 |
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| US (2) | US11882287B2 (en) |
| EP (1) | EP3915265A4 (en) |
| JP (2) | JP7405861B2 (en) |
| KR (1) | KR102688366B1 (en) |
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