JP2022518169A - ビデオエンコーダ、ビデオデコーダ、および対応する方法 - Google Patents
ビデオエンコーダ、ビデオデコーダ、および対応する方法 Download PDFInfo
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Abstract
Description
本出願は、参照によって本明細書に組み込まれる、「Sub-Pictures in Video Coding」という表題の、Ye-Kui Wang他により2019年1月9日に出願された米国仮特許出願第62/790,207号の利益を主張する。
SubpicWidthInLumaSamples[i]=subpic_width_in_luma_samples[i]
SubpicHeightInLumaSamples[i]=subpic_height_in_luma_samples[i]
SubPicRightBorderInPic[i]=SubpictureXOffset[i]+PicWidthInLumaSamples[i]
SubPicBottomBorderInPic[i]=SubpictureYOffset[i]+PicHeightInLumaSamples[i]
SubpicWidthInCtbsY[i]=Ceil(SubpicWidthInLumaSamples[i]÷CtbSizeY)
SubpicHeightInCtbsY[i]=Ceil(SubpicHeightInLumaSamples[i]÷CtbSizeY)
SubpicSizeInCtbsY[i]=SubpicWidthInCtbsY[i]*SubpicHeightInCtbsY[i]
SubpicWidthInMinCbsY[i]=SubpicWidthInLumaSamples[i]/MinCbSizeY
SubpicHeightInMinCbsY[i]=SubpicHeightInLumaSamples[i]/MinCbSizeY
SubpicSizeInMinCbsY[i]=SubpicWidthInMinCbsY[i]*SubpicHeightInMinCbsY[i]
SubpicSizeInSamplesY[i]=SubpicWidthInLumaSamples[i]*SubpicHeightInLumaSamples[i]
SubpicWidthInSamplesC[i]=SubpicWidthInLumaSamples[i]/SubWidthC
SubpicHeightInSamplesC[i]=SubpicHeightInLumaSamples[i]/SubHeightC
PicWidthInLumaSamples=SubpicWidthInLumaSamples[tile_group_subpic_id]
PicHeightInLumaSamples=PicHeightInLumaSamples[tile_group_subpic_id]
SubPicRightBorderInPic=SubPicRightBorderInPic[tile_group_subpic_id]
SubPicBottomBorderInPic=SubPicBottomBorderInPic[tile_group_subpic_id]
PicWidthInCtbsY=SubPicWidthInCtbsY[tile_group_subpic_id]
PicHeightInCtbsY=SubPicHeightInCtbsY[tile_group_subpic_id]
PicSizeInCtbsY=SubPicSizeInCtbsY[tile_group_subpic_id]
PicWidthInMinCbsY=SubPicWidthInMinCbsY[tile_group_subpic_id]
PicHeightInMinCbsY=SubPicHeightInMinCbsY[tile_group_subpic_id]
PicSizeInMinCbsY=SubPicSizeInMinCbsY[tile_group_subpic_id]
PicSizeInSamplesY=SubPicSizeInSamplesY[tile_group_subpic_id]
PicWidthInSamplesC=SubPicWidthInSamplesC[tile_group_subpic_id]
PicHeightInSamplesC=SubPicHeightInSamplesC[tile_group_subpic_id]
xColBr=xCb+cbWidth (8-355)
yColBr=yCb+cbHeight (8-356)
xColBr=xCb+cbWidth (8-392)
yColBr=yCb+cbHeight (8-393)
xColBr=xCb+cbWidth (8-566)
yColBr=yCb+cbHeight (8-567)
201 区分されたビデオ信号
211 汎用コーダ制御コンポーネント
213 変換スケーリングおよび量子化コンポーネント
215 イントラピクチャ推定コンポーネント
217 イントラピクチャ予測コンポーネント
219 動き補償コンポーネント
221 動き推定コンポーネント
223 復号ピクチャバッファコンポーネント
225 ループ内フィルタコンポーネント
227 フィルタ制御分析コンポーネント
229 スケーリングおよび逆変換コンポーネント
231 ヘッダフォーマッティングおよびCABACコンポーネント
301 区分されたビデオ信号
313 変換および量子化コンポーネント
317 イントラピクチャ予測コンポーネント
321 動き補償コンポーネント
323 復号ピクチャバッファコンポーネント
325 ループ内フィルタコンポーネント
329 逆変換および量子化コンポーネント
331 エントロピーコーディングコンポーネント
417 イントラピクチャ予測コンポーネント
421 動き補償コンポーネント
423 復号ピクチャバッファコンポーネント
425 ループ内フィルタコンポーネント
429 逆変換および量子化コンポーネント
433 エントロピー復号コンポーネント
500 ビットストリーム
501 サブビットストリーム
510 SPS
512 PPS
514 スライスヘッダ
515 SEIメッセージ
520 画像データ
521 ピクチャ
522 サブピクチャ
523 サブピクチャ
524 スライス
525 スライス
531 サブピクチャサイズ
532 サブピクチャ位置
533 サブピクチャID
534 動き制約サブピクチャフラグ
535 サブピクチャレベル
600 ピクチャ
622 サブピクチャ
631 サブピクチャサイズ
631a サブピクチャ幅
631b サブピクチャ高さ
632 位置
633 サブピクチャID
634 時間動き制約サブピクチャ
642 左上サンプル
700 機構
722 サブピクチャ
724 スライス
733 サブピクチャID
742 左上の角
801 ピクチャの右の境界
802 ピクチャの下の境界
822 サブピクチャ
825 CTU
900 ビデオコーディングデバイス
910 送信機/受信機
914 コーディングモジュール
920 ダウンストリームポート
930 プロセッサ
932 メモリ
950 アップストリームポート
960 I/Oデバイス
1200 システム
1201 区分モジュール
1202 ビデオエンコーダ
1203 決定モジュール
1205 符号化モジュール
1207 記憶モジュール
1209 送信モジュール
1210 ビデオデコーダ
1211 受信モジュール
1213 解析モジュール
1215 割り振りモジュール
1217 復号モジュール
1219 転送モジュール
Claims (20)
- デコーダにおいて実施される方法であって、
前記デコーダの受信機によって、ピクチャから区分された1つまたは複数のサブピクチャと、現在のサブピクチャを復号するためのリソース要件を示すサブピクチャレベルインジケータとを備えるビットストリームを受信するステップと、
前記デコーダのプロセッサによって、前記ビットストリームを解析して前記サブピクチャレベルインジケータおよび前記現在のサブピクチャを取得するステップと、
前記プロセッサによって、前記サブピクチャレベルインジケータに基づいて前記現在のサブピクチャを復号するためにリソースを割り振るステップと、
前記プロセッサによって、前記現在のサブピクチャを復号して、前記割り振られたリソースを利用することによってビデオシーケンスを作成するステップと、
前記プロセッサによって、前記ビデオシーケンスを表示のために転送するステップとを備える、方法。 - 前記サブピクチャレベルインジケータが、前記ビットストリームの中の補足強化情報(SEI)メッセージに含まれる、請求項1に記載の方法。
- 前記サブピクチャレベルインジケータが、前記ビットストリームの中のシーケンスパラメータセット(SPS)に含まれる、請求項1に記載の方法。
- 前記サブピクチャレベルインジケータが、サブピクチャサイズ、サブピクチャピクセルカウント、サブピクチャビットレート、またはこれらの組合せを示す、請求項1から3のいずれか一項に記載の方法。
- 前記ビットストリームが、前記サブピクチャの各々のサブピクチャ識別子(ID)を備えるSPSを含む、請求項1から4のいずれか一項に記載の方法。
- 前記SPSがさらに、前記サブピクチャの各々のサブピクチャ位置を備える、請求項1から6のいずれか一項に記載の方法。
- 前記SPSがさらに、前記サブピクチャの各々のサブピクチャサイズを備える、請求項1から7のいずれか一項に記載の方法。
- エンコーダにおいて実施される方法であって、
前記エンコーダのプロセッサによって、ピクチャを複数のサブピクチャへと区分するステップと、
前記プロセッサによって、前記複数のサブピクチャのうちの1つまたは複数をビットストリームへと符号化するステップと、
前記プロセッサによって、前記1つまたは複数のサブピクチャの各々を復号するためのリソース要件を決定するステップと、
前記プロセッサによって、前記1つまたは複数のサブピクチャを復号するための前記リソース要件を示すサブピクチャレベルインジケータをビットストリームへと符号化するステップと、
前記エンコーダのメモリに、デコーダへの通信のために前記ビットストリームを記憶するステップとを備える、方法。 - 前記サブピクチャレベルインジケータが、前記ビットストリームの中の1つまたは複数の補足強化情報(SEI)メッセージへと符号化される、請求項8に記載の方法。
- 前記サブピクチャレベルインジケータが、前記ビットストリームの中のシーケンスパラメータセット(SPS)へと符号化される、請求項8に記載の方法。
- 前記サブピクチャレベルインジケータが、サブピクチャサイズ、サブピクチャピクセルカウント、サブピクチャビットレート、またはこれらの組合せを示す、請求項8から10のいずれか一項に記載の方法。
- 前記プロセッサによって、前記サブピクチャの各々のサブピクチャ識別子(ID)を備えるSPSを前記ビットストリームへと符号化するステップをさらに備える、請求項8から11のいずれか一項に記載の方法。
- 前記プロセッサによって、前記サブピクチャの各々のサブピクチャ位置を備えるSPSを前記ビットストリームへと符号化するステップをさらに備える、請求項8から12のいずれか一項に記載の方法。
- 前記プロセッサによって、前記サブピクチャの各々のサブピクチャサイズを備えるSPSを前記ビットストリームへと符号化するステップをさらに備える、請求項8から13のいずれか一項に記載の方法。
- プロセッサと、メモリと、前記プロセッサに結合された受信機と、前記プロセッサに結合された送信機とを備え、前記プロセッサ、メモリ、受信機、および送信機が、請求項1から14のいずれか一項に記載の方法を実行するように構成される、ビデオコーディングデバイス。
- ビデオコーディングデバイスが使用するためのコンピュータプログラム製品を備える非一時的コンピュータ可読媒体であって、前記コンピュータプログラム製品が、プロセッサによって実行されると前記ビデオコーディングデバイスに請求項1から14のいずれか一項に記載の方法を実行させる、前記非一時的コンピュータ可読媒体に記憶されるコンピュータ実行可能命令を備える、非一時的コンピュータ可読媒体。
- ピクチャから区分された1つまたは複数のサブピクチャと、現在のサブピクチャを復号するためのリソース要件を示すサブピクチャレベルインジケータとを備える、ビットストリームを受信するための受信手段と、
前記ビットストリームを解析して前記サブピクチャレベルインジケータおよび前記現在のサブピクチャを取得するための解析手段と、
前記サブピクチャレベルインジケータに基づいて前記現在のサブピクチャを復号するためにリソースを割り振るための割り振り手段と、
前記現在のサブピクチャを復号して、前記割り振られたリソースを利用することによりビデオシーケンスを作成するための復号手段と、
前記ビデオシーケンスを表示のために転送するための転送手段とを備える、デコーダ。 - 前記デコーダがさらに、請求項1から7のいずれか一項に記載の方法を実行するように構成される、請求項17に記載のデコーダ。
- ピクチャを複数のサブピクチャへと区分するための区分手段と、
前記1つまたは複数のサブピクチャの各々を復号するためのリソース要件を決定するための決定手段と、
前記1つまたは複数のサブピクチャを復号するための前記リソース要件を示すサブピクチャレベルインジケータをビットストリームへと符号化し、
前記複数のサブピクチャのうちの1つまたは複数を前記ビットストリームへと符号化する
ための符号化手段と、
デコーダへの通信のために前記ビットストリームを記憶するための記憶手段とを備える、エンコーダ。 - 前記エンコーダがさらに、請求項8から14のいずれか一項に記載の方法を実行するように構成される、請求項19に記載のエンコーダ。
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