JP7201700B2 - 履歴ベースの動きベクトル予測のための方法並びにその装置及びコンピュータプログラム - Google Patents
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Description
本願は、2018年11月28日に出願された米国特許出願第16/203,364号「METHOD AND APPARATUS FOR HISTORY-BASED MOTION VECTOR PREDICTION」の優先権の利益を主張する。同出願は、2018年7月16日に出願された米国仮出願第62/698,559号「METHOD AND APPARATUS FOR HISTORY-BASED MOTION VECTOR PREDICTITION」の優先権の利益を主張している。これらの全内容は参照により明細書に組み込まれる。
本開示は、一般的にビデオ符号化に関連する実施形態を説明する。
付録A:頭字語
MV:動きベクトル
HEVC:高効率ビデオ符号化
SEI:補足強調情報
VUI:ビデオユーザビリティ情報
GOP:グループオブピクチャ
TU:変換ユニット
PU:予測ユニット
CTU:符号化ツリーユニット
CTB:符号化ツリーブロック
PB:予測ブロック
HRD:仮想参照デコーダ
SNR:信号雑音比
CPU:中央処理ユニット
GPU:グラフィクス処理ユニット
CRT:陰極線管
LCD:液晶ディスプレイ
OLED:有機発光ダイオード
CD:コンパクトディスク
DVD:デジタルビデオディスク
ROM:読取専用メモリ
RAM:ランダムアクセスメモリ
ASIC:特定用途向け集積回路
PLD:プログラマブルロジックデバイス
LAN:ローカルエリアネットワーク
GSM:モバイル通信用グローバルシステム
LTE:ロングタームエボリューション
CANBus:コントローラエリアネットワークバス
USB:ユニバーサルシリアルバス
PCI:周辺コンポーネント相互接続
FPGA:フィールドプログラマブルゲートエリア
SSD:ソリッドステートドライブ
IC:集積回路
CU:符号化ユニット
Claims (10)
- デコーダが実行するビデオ復号の方法であって、
符号化されたビデオビットストリームから現在のピクチャを取得するステップであって、前記現在のピクチャは複数のユニットに分割され、かつ複数のタイルに分割され、各タイルは少なくとも1つのユニットを含む、ステップと、
前記複数のタイルのうちの第一のタイルにおける第一の現在のユニットを復号するステップと、
復号された前記第一の現在のユニットの動きベクトルで第一のHMVPバッファを更新するステップと、
前記複数のタイルのうちの前記第一のタイルにおける前記第一の現在のユニットの位置を決定するステップと、
前記第一の現在のユニットが前記第一のタイルの先頭の列に位置すると決定したことに応じて、前記第一のHMVPバッファをリセットするステップと、
を含む、方法。 - 前記第一の現在のユニットが前記第一のタイルの先頭の列に位置すると決定したことに応じて、第一の行バッファの内容を前記第一のHMVPバッファにコピーするステップを更に含む、
請求項1に記載の方法。 - 前記第一の現在のユニットが前記第一のタイルの最後の列に位置すると決定したことに応じて、前記第一のHMVPバッファの内容を前記第一の行バッファにコピーするステップを更に含む、
請求項2に記載の方法。 - 前記複数のタイルのうちの第二のタイルにおける第二の現在のユニットを復号するステップと、
復号された前記第二の現在のユニットの動きベクトルで第二のHMVPバッファを更新するステップと、
前記複数のタイルのうちの前記第二のタイルにおける前記第二の現在のユニットの位置を決定するステップと、
前記第二の現在のユニットが前記第二のタイルの先頭の列に位置すると決定したことに応じて、前記第二のHMVPバッファをリセットするステップと、
を更に含む、
請求項1乃至3のうちいずれか1項に記載の方法。 - 前記第二の現在のユニットが前記第二のタイルの先頭の列に位置すると決定したことに応じて、第二の行バッファの内容を前記第二のHMVPバッファにコピーするステップを更に含む、
請求項4に記載の方法。 - 前記第二の現在のユニットが前記第二のタイルの最後の列に位置すると決定したことに応じて、前記第二のHMVPバッファの内容を前記第二の行バッファにコピーするステップを更に含む、
請求項5に記載の方法。 - 前記第一の現在のユニットの復号は、前記第二の現在のユニットの復号と並行して実行される、
請求項4乃至6のうちいずれか1項に記載の方法。 - 前記第一のHMVPバッファ及び前記第二のHMVPバッファは、先入れ先出し(FIFO)バッファであり、
復号された前記第一の現在のユニットの動きベクトルで前記第一のHMVPバッファを更新するステップは、該動きベクトルを前記第一のHMVPバッファの最後のエントリーに格納し、前記第一のHMVPバッファの最初のエントリーを削除するステップを含み、
復号された前記第二の現在のユニットの動きベクトルで前記第二のHMVPバッファを更新するステップは、該動きベクトルを前記第二のHMVPバッファの最後のエントリーに格納し、前記第二のHMVPバッファの最初のエントリーを削除するステップを含む、
請求項4乃至7のうちいずれか1項に記載の方法。 - コンピュータに、請求項1乃至8のうちいずれか1項に記載の方法を実行させるためのプログラム。
- 処理回路を含むビデオデコーダであって、
前記処理回路は、請求項1乃至8のうちいずれか1項に記載の方法を実行するように構成される、ビデオデコーダ。
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JP2022205285A JP7426465B2 (ja) | 2018-07-16 | 2022-12-22 | 履歴ベースの動きベクトル予測のための方法並びにその装置及びコンピュータプログラム |
JP2024007222A JP2024041998A (ja) | 2018-07-16 | 2024-01-22 | 履歴ベースの動きベクトル予測のための方法並びにその装置及びコンピュータプログラム |
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US16/203,364 US10491902B1 (en) | 2018-07-16 | 2018-11-28 | Method and apparatus for history-based motion vector prediction |
US16/203,364 | 2018-11-28 | ||
PCT/US2019/040715 WO2020018297A1 (en) | 2018-07-16 | 2019-07-05 | Method and apparatus for history-based motion vector prediction |
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WO2019234600A1 (en) | 2018-06-05 | 2019-12-12 | Beijing Bytedance Network Technology Co., Ltd. | Interaction between pairwise average merging candidates and intra-block copy (ibc) |
WO2020003274A1 (en) | 2018-06-29 | 2020-01-02 | Beijing Bytedance Network Technology Co., Ltd. | Checking order of motion candidates in lut |
CN113115046A (zh) | 2018-06-21 | 2021-07-13 | 北京字节跳动网络技术有限公司 | 分量相关的子块分割 |
WO2019244117A1 (en) | 2018-06-21 | 2019-12-26 | Beijing Bytedance Network Technology Co., Ltd. | Unified constrains for the merge affine mode and the non-merge affine mode |
CN115134599A (zh) | 2018-06-29 | 2022-09-30 | 抖音视界有限公司 | 更新查找表(lut)的条件 |
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