JP5801032B2 - インループのアーチファクト除去フィルタリングのための方法および装置 - Google Patents
インループのアーチファクト除去フィルタリングのための方法および装置 Download PDFInfo
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- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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Description
abstraction layer)ユニット・ヘッダレベルのそれぞれの規則を指す。
(1)新しい残差信号[数3]を算出する。
(4)c’の逆変換をr’とし、Pと加算して、最終的な予測x’=P+r’を得る。
method)の信号を送信するということである。
Claims (16)
- イメージ領域をエンコードするためのエンコーダを有し、前記エンコーダは、それぞれ少なくとも第1および第2のタイプの量子化アーチファクトを減少させるためにインループフィルタリングを連鎖して実行するための少なくとも2つのフィルタを含み、前記少なくとも2つのフィルタは、ブロッキング・アーチファクトを減少させるために初回パスを実行するためのデブロッキングフィルタ、およびノイズを減少させるために第2のパスを実行するための散在的ノイズ除去フィルタを含み、前記散在的ノイズ除去フィルタは、ピクチャタイプに依存して、マクロブロック、スライス、ピクチャ、又はシーケンスレベルにおいて、選択的に使用可能にされる、装置。
- 前記少なくとも2つのフィルタのうちの少なくとも1つは、少なくとも1つの圧縮制約を適用するために用いられる、請求項1記載の装置。
- 前記少なくとも2つのフィルタのうちの少なくとも1つは、前記イメージ領域に対応する少なくとも1つのデータ特性およびデータ統計によって、適応的に、使用可能または使用不可能にされる、請求項1記載の装置。
- 前記少なくとも2つのフィルタは前記イメージ領域をエンコードすることに対応するインループフィルタであり、かつ、表示される前記イメージ領域のバージョンは、前記少なくとも2つのインループフィルタの後で前記イメージ領域に対応する出力信号および前記少なくとも2つのインループフィルタの前で前記イメージ領域に対応する最初の入力信号のうちの少なくとも1つと異なる、請求項1記載の装置。
- 連鎖して少なくとも2つのフィルタを使用してインループフィルタリングを実行することによって、イメージ領域をエンコードするステップを有し、
前記インループフィルタリングは:
ブロッキングアーチファクトを減少させるためのデブロッキングフィルタによる初回パスを実行するステップと、
ピクチャタイプに依存して、マクロブロック、スライス、ピクチャ、又はシーケンスレベルにおいて、散在的ノイズ除去フィルタを選択的に使用可能にさせるステップであって、前記散在的ノイズ除去フィルタが使用可能である場合、ノイズを減少させるための前記散在的ノイズ除去フィルタにより第2のパスが実行される、ステップと、
を含む、方法。 - 前記少なくとも2つのフィルタのうちの少なくとも1つは、少なくとも1つの圧縮制約を適用するために用いられる、請求項5記載の方法。
- 2以上のフィルタのうちの少なくとも1つは、前記イメージ領域に対応する少なくとも1つのデータ特性およびデータ統計によって、適応的に、使用可能または使用不可能にされる、請求項5記載の方法。
- 前記少なくとも2つのフィルタは前記イメージ領域をエンコードするステップに対応するインループフィルタであり、かつ、表示される前記イメージ領域のバージョンは、前記少なくとも2つのインループフィルタの後で前記イメージ領域に対応する出力信号および前記少なくとも2つのインループフィルタの前で前記イメージ領域に対応する最初の入力信号のうちの少なくとも1つと異なる、請求項5記載の方法。
- イメージ領域をデコードするためのデコーダを有し、前記デコーダは、それぞれ少なくとも第1および第2のタイプの量子化アーチファクトを減少させるためにインループフィルタリングを連鎖して実行するための少なくとも2つのフィルタを含み、前記少なくとも2つのフィルタは、ブロッキング・アーチファクトを減少させるために初回パスを実行するためのデブロッキングフィルタ、およびノイズを減少させるために第2のパスを実行するための散在的ノイズ除去フィルタを含み、前記散在的ノイズ除去フィルタは、ピクチャタイプに依存して、マクロブロック、スライス、ピクチャ、又はシーケンスレベルにおいて、選択的に使用可能にされる、装置。
- 前記少なくとも2つのフィルタのうちの少なくとも1つは、少なくとも1つの圧縮制約を適用するために用いられる、請求項9記載の装置。
- 前記少なくとも2つのフィルタのうちの少なくとも1つは、前記イメージ領域に対応する少なくとも1つのデータ特性およびデータ統計によって、適応的に、使用可能または使用不可能にされる、請求項9記載の装置。
- 前記少なくとも2つのフィルタは前記イメージ領域をデコードすることに対応するインループフィルタであり、かつ、表示される前記イメージ領域のバージョンは、前記少なくとも2つのインループフィルタの後で前記イメージ領域に対応する出力信号および前記少なくとも2つのインループフィルタの前で前記イメージ領域に対応する最初の入力信号のうちの少なくとも1つと異なる、請求項9記載の装置。
- 連鎖して少なくとも2つのフィルタを使用してインループフィルタリングを実行することによって、イメージ領域をデコードするステップを有し、
前記インループフィルタリングは:
ブロッキングアーチファクトを減少させるためのデブロッキングフィルタによる初回パスを実行するステップと、
ピクチャタイプに依存して、マクロブロック、スライス、ピクチャ、又はシーケンスレベルにおいて、散在的ノイズ除去フィルタを選択的に使用可能にさせるステップであって、前記散在的ノイズ除去フィルタが使用可能である場合、ノイズを減少させるための前記散在的ノイズ除去フィルタにより第2のパスが実行される、ステップと、
を含む、方法。 - 前記少なくとも2つのフィルタのうちの少なくとも1つは、少なくとも1つの圧縮制約を適用するために用いられる、請求項13記載の方法。
- 2以上のフィルタのうちの少なくとも1つは、前記イメージ領域に対応する少なくとも1つのデータ特性およびデータ統計によって、適応的に、使用可能または使用不可能にされる、請求項13記載の方法。
- 前記少なくとも2つのフィルタは前記イメージ領域をデコードするステップに対応するインループフィルタであり、かつ、表示される前記イメージ領域のバージョンは、前記少なくとも2つのインループフィルタの後で前記イメージ領域に対応する出力信号および前記少なくとも2つのインループフィルタの前に前記イメージ領域に対応する最初の入力信号のうちの少なくとも1つと異なる、請求項13記載の方法。
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US86491706P | 2006-11-08 | 2006-11-08 | |
US60/864,917 | 2006-11-08 | ||
PCT/US2007/022795 WO2008057308A2 (en) | 2006-11-08 | 2007-10-25 | Methods and apparatus for in-loop de-artifact filtering |
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JP2010509842A JP2010509842A (ja) | 2010-03-25 |
JP5801032B2 true JP5801032B2 (ja) | 2015-10-28 |
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US (5) | US9277243B2 (ja) |
EP (2) | EP4224853A1 (ja) |
JP (1) | JP5801032B2 (ja) |
CN (17) | CN105392005A (ja) |
BR (1) | BRPI0717936B1 (ja) |
HK (4) | HK1214706A1 (ja) |
WO (1) | WO2008057308A2 (ja) |
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