JP5587552B2 - スケーラブル映像符号化を用いた多視点映像符号化 - Google Patents
スケーラブル映像符号化を用いた多視点映像符号化 Download PDFInfo
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Description
Claims (16)
- 第1の立体視視点画像を基本レイヤとして符号化し、前記第1の立体視視点画像からの予測を用いて、奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤとして符号化する符号化器
を備え、
前記第1の立体視視点画像と、前記奥行きマップおよび前記ディスパリティマップのうちの少なくとも一方とは、各々、特定の立体視コンテンツに対応し、時間スケーラビリティ、空間スケーラビリティ、およびSNRスケーラビリティの各手法のうちからの選択に基づいて符号化されることを特徴とするスケーラブル映像符号化器。 - 前記基本レイヤおよび前記拡張レイヤは、映像ビットストリームに含まれ、
前記符号化器は、前記特定の立体視コンテンツの符号化されていない視点画像のレンダリングに関連する追加の三次元情報を、前記映像ビットストリームを伝達するメッセージに追加することを特徴とする請求項1に記載のスケーラブル映像符号化器。 - 前記符号化器は、前記空間スケーラビリティ手法が選択された場合、空間スケーリング係数を1以下に制限することを特徴とする請求項1に記載のスケーラブル映像符号化器。
- 前記符号化器は、前記空間スケーリング係数を2(-n)に設定し(nは1以上の整数)、前記基本レイヤから前記拡張レイヤへの多対1ブロックマッピングを実行し、前記基本レイヤの、イントラ予測モードを有する少なくともいくつかのブロックのいずれかをインター予測モードに変換し、並びに前記イントラ予測モードの動きベクトルおよび離散コサイン変換係数を強制的にゼロにすることによって、前記基本レイヤおよび前記拡張レイヤの少なくともいくつかのブロックを、インターレイヤ予測を用いて符号化することを特徴とする請求項3に記載のスケーラブル映像符号化器。
- 前記符号化器は、前記拡張レイヤのブロックの動きベクトルを、前記基本レイヤの、マッピングされたブロックの組の中の対応するマッピングされたブロックのコーナーの、スケーリングされた動きベクトルにマッピングし、前記拡張レイヤの前記ブロックの基準インデックスを、前記基本レイヤの、前記対応するマッピングされたブロックの前記コーナーの基準インデックスに割り当て、前記拡張レイヤの前記ブロック、および前記基本レイヤの、前記マッピングされたブロックの組は、前記少なくともいくつかのブロックに含まれ、前記拡張レイヤの前記ブロックは、前記基本レイヤの、前記マッピングされたブロックの組と同じ場所にあることを特徴とする請求項4に記載のスケーラブル映像符号化器。
- 前記符号化器は、前記空間スケーリング係数を2(-n)に設定し(nは1以上の整数)、および前記少なくともいくつかのブロックに対応する残差のテクスチャダウンサンプリングについての平均をとることによって、前記基本レイヤおよび前記拡張レイヤの少なくともいくつかのブロックを符号化することを特徴とする請求項3に記載のスケーラブル映像符号化器。
- スケーラブル映像符号化の方法であって、
第1の立体視視点画像を基本レイヤとして符号化するステップと、
前記第1の立体視視点画像からの予測を用いて、奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤとして符号化するステップと、
を備え、
前記第1の立体視視点画像と、前記奥行きマップおよび前記ディスパリティマップのうちの少なくとも一方とが、各々、特定の立体視コンテンツに対応し、時間スケーラビリティ、空間スケーラビリティ、およびSNRスケーラビリティの各手法のうちからの選択に基づいて符号化されることを特徴とする方法。 - 前記基本レイヤおよび前記拡張レイヤは、映像ビットストリームに含まれ、
前記特定の立体視コンテンツの符号化されていない視点画像のレンダリングに関連する追加の三次元情報を、前記映像ビットストリームを伝達するメッセージに追加することを特徴とする請求項7に記載の方法。 - 前記空間スケーラビリティ手法が選択された場合、空間スケーリング係数を1以下に制限することを特徴とする請求項7に記載の方法。
- 前記第1の立体視視点画像を基本レイヤとして符号化するステップ並びに前記奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤとして符号化するステップは、前記空間スケーリング係数を2(-n)に設定し(nは1以上の整数)、前記基本レイヤから前記拡張レイヤへの多対1ブロックマッピングを実行し、前記基本レイヤの、イントラ予測モードを有する少なくともいくつかのブロックのいずれかをインター予測モードに変換し、並びに前記イントラ予測モードの動きベクトルおよび離散コサイン変換係数を強制的にゼロにすることによって、前記基本レイヤおよび前記拡張レイヤの少なくともいくつかのブロックを、インターレイヤ予測を用いて符号化することを特徴とする請求項9に記載の方法。
- 前記第1の立体視視点画像を基本レイヤとして符号化するステップ並びに前記奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤとして符号化するステップは、前記拡張レイヤのブロックの動きベクトルを、前記基本レイヤの、マッピングされたブロックの組の中の対応するマッピングされたブロックのコーナーの、スケーリングされた動きベクトルにマッピングし、前記拡張レイヤの前記ブロックの基準インデックスを、前記基本レイヤの、前記対応するマッピングされたブロックの前記コーナーの基準インデックスに割り当て、前記拡張レイヤの前記ブロック、および前記基本レイヤの、前記マッピングされたブロックの組は、前記少なくともいくつかのブロックに含まれ、前記拡張レイヤの前記ブロックは、前記基本レイヤの、前記マッピングされたブロックの組と同じ場所にあることを特徴とする請求項10に記載の方法。
- 前記第1の立体視視点画像を基本レイヤとして符号化するステップ並びに前記奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤとして符号化するステップは、前記空間スケーリング係数を2(-n)に設定し(nは1以上の整数)、および前記少なくともいくつかのブロックに対応する残差のテクスチャダウンサンプリングについての平均をとることによって、前記基本レイヤおよび前記拡張レイヤの少なくともいくつかのブロックを符号化することを特徴とする請求項10に記載の方法。
- 第1の立体視視点画像を基本レイヤから復号し、前記第1の立体視視点画像からの予測を用いて、奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤから復号する復号器
を備え、
前記第1の立体視視点画像と、前記奥行きマップおよび前記ディスパリティマップのうちの少なくとも一方とが、各々、特定の立体視コンテンツに対応し、時間スケーラビリティ、空間スケーラビリティ、およびSNRスケーラビリティの各手法のうちからの選択に基づいて復号されることを特徴とするスケーラブル映像復号器。 - 前記基本レイヤおよび前記拡張レイヤは、映像ビットストリームに含まれ、
前記復号器は、前記特定の立体視コンテンツの符号化されていない視点画像のレンダリングに関連する追加の三次元情報を、前記映像ビットストリームを伝達するメッセージから読み取ることを特徴とする請求項13に記載のスケーラブル映像復号器。 - スケーラブル映像復号の方法であって、
第1の立体視視点画像を基本レイヤから復号するステップと、
前記第1の立体視視点画像からの予測を用いて、奥行きマップおよびディスパリティマップのうちの少なくとも一方を拡張レイヤから復号するステップと、
を備え、
前記第1の立体視視点画像と、前記奥行きマップおよび前記ディスパリティマップのうちの少なくとも一方とが、各々、特定の立体視コンテンツに対応し、時間スケーラビリティ、空間スケーラビリティ、およびSNRスケーラビリティの各手法のうちからの選択に基づいて復号されることを特徴とする方法。 - 前記基本レイヤおよび前記拡張レイヤは、映像ビットストリームに含まれ、
前記特定の立体視コンテンツの符号化されていない視点画像のレンダリングに関連する追加の三次元情報を、前記映像ビットストリームを伝達するメッセージから読み取るステップをさらに備えたことを特徴とする請求項15に記載の方法。
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US72814105P | 2005-10-19 | 2005-10-19 | |
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PCT/US2006/040658 WO2007047736A2 (en) | 2005-10-19 | 2006-10-17 | Multi-view video coding using scalable video coding |
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BRPI0616745A2 (pt) | 2011-06-28 |
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CN101292538B (zh) | 2012-11-28 |
EP1946563A2 (en) | 2008-07-23 |
WO2007047736A3 (en) | 2007-07-12 |
CN101292538A (zh) | 2008-10-22 |
MY159176A (en) | 2016-12-30 |
US9131247B2 (en) | 2015-09-08 |
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KR101475527B1 (ko) | 2014-12-22 |
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