JP5087624B2 - 解析的且つ実験的な複合型の符号化歪みモデル化のための方法及び装置 - Google Patents
解析的且つ実験的な複合型の符号化歪みモデル化のための方法及び装置 Download PDFInfo
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- JP5087624B2 JP5087624B2 JP2009526636A JP2009526636A JP5087624B2 JP 5087624 B2 JP5087624 B2 JP 5087624B2 JP 2009526636 A JP2009526636 A JP 2009526636A JP 2009526636 A JP2009526636 A JP 2009526636A JP 5087624 B2 JP5087624 B2 JP 5087624B2
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/115—Selection of the code volume for a coding unit prior to coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
(外1)
は、フレームの元のピクセル及び再構成されるピクセルを表し、Aは、フレームにおけるピクセルの総数を表す。留意すべきは、MPEG−4AVC標準で、QPは0から51の範囲を有し、QPとQとの間の関係は大体
(1)初期化:∀QP、ρ(QP)=0、DZ(QP)=0;
(2)ワンパスのテーブルルックアップ:夫々の係数Coeffiについて:
(a)レベルi=|Coeffi|;
(b)QPi=QP_レベル_テーブル[レベルi]。QP_レベル_テーブルは、夫々の係数レベルについて、その特定のレベルの係数を零であるよう量子化する最小の量子化パラメータ(QP)を示す表である;
(c)ρ(QPi)=ρ(QPi)+1、DZ(QPi)=DZ(QPi)+Coeffi 2;
(3)総和:夫々のQPについて、QPminからスタートしてQPmaxまで:
Claims (11)
- ビデオ符号化歪み演算を、零量子化係数歪みに割り当てられる第1歪み部分演算と、非零量子化係数歪みに割り当てられる第2歪み部分演算とに分けることによって、ビデオ符号化歪みをモデル化し、実験計算を用いることによって前記第1歪み部分演算を計算し、解析計算を用いることによって前記第2歪み部分演算を計算する歪み計算器を有し、
前記零量子化係数歪みは正確に計算され、
前記第1歪み部分演算は、零量子化係数の値を用いて実質的に網羅的に全てのステップサイズについて前記零量子化係数歪みの値を計算し、
前記非零量子化係数歪みは、一様な歪みを有するランダムな変数を用いて推定される、装置。 - 前記歪み計算器は、全ての零量子化係数にわたるワンパスのルックアップにより全ての量子化ステップサイズについて前記零量子化係数歪みの値を計算する、請求項1記載の装置。
- 前記歪み計算器は、前記ビデオ符号化歪みによりフレームビットバジェットを配分するビデオエンコーダに含まれる、請求項1記載の装置。
- 前記ビデオ符号化歪みは、ソース符号化平均二乗誤差歪みである、請求項1記載の装置。
- 画像データのビデオ符号化歪みをモデル化することによって該画像データを符号化するビデオエンコーダを有し、
前記ビデオエンコーダは、ビデオ符号化歪み演算を、零量子化係数歪みに割り当てられる第1歪み部分演算と、非零量子化係数歪みに割り当てられる第2歪み部分演算とに分けることによって、前記ビデオ符号化歪みをモデル化し、実験計算を用いることによって前記第1歪み部分演算を計算し、解析計算を用いることによって前記第2歪み部分演算を計算し、
前記零量子化係数歪みは正確に計算され、
前記第1歪み部分演算は、零量子化係数の値を用いて実質的に網羅的に全てのステップサイズについて前記零量子化係数歪みの値を計算し、
前記非零量子化係数歪みは、一様な歪みを有するランダムな変数を用いて推定される、装置。 - 前記ビデオエンコーダは、全ての零量子化係数にわたるワンパスのルックアップにより全ての量子化ステップサイズについて前記零量子化係数歪みの値を計算する、請求項5記載の装置。
- 前記ビデオ符号化歪みは、ソース符号化平均二乗誤差歪みである、請求項5記載の装置。
- ビデオ符号化歪みをモデル化するモデル化工程を有し、
前記モデル化工程は、
ビデオ符号化歪み演算を、零量子化係数歪みに割り当てられる第1歪み部分演算と、非零量子化係数歪みに割り当てられる第2歪み部分演算とに分ける分割工程と、
実験計算を用いることによって前記第1歪み部分演算を計算する工程と、
解析計算を用いることによって前記第2歪み部分演算を計算する工程と
を有し、
前記零量子化係数歪みは正確に計算され、
前記第1歪み部分演算は、零量子化係数の値を用いて実質的に網羅的に全てのステップサイズについて前記零量子化係数歪みの値を計算し、
前記非零量子化係数歪みは、一様な歪みを有するランダムな変数を用いて推定される、方法。 - 前記第1の部分を計算する工程は、全ての零量子化係数にわたるワンパスのルックアップにより全ての量子化ステップサイズについて前記零量子化係数歪みの値を計算する工程を有する、請求項8記載の方法。
- 前記ビデオ符号化歪みによりフレームビットバジェットを配分するビデオエンコーダで実行される、請求項8記載の方法。
- 前記ビデオ符号化歪みは、ソース符号化平均二乗誤差歪みである、請求項8記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US82394206P | 2006-08-30 | 2006-08-30 | |
US60/823,942 | 2006-08-30 | ||
PCT/US2007/018481 WO2008027250A2 (en) | 2006-08-30 | 2007-08-21 | Method and apparatus for analytical and empirical hybrid encoding distortion modeling |
Publications (2)
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JP2010503265A JP2010503265A (ja) | 2010-01-28 |
JP5087624B2 true JP5087624B2 (ja) | 2012-12-05 |
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JP2009526636A Expired - Fee Related JP5087624B2 (ja) | 2006-08-30 | 2007-08-21 | 解析的且つ実験的な複合型の符号化歪みモデル化のための方法及び装置 |
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US (1) | US8265172B2 (ja) |
EP (1) | EP2060125B1 (ja) |
JP (1) | JP5087624B2 (ja) |
KR (1) | KR101377833B1 (ja) |
CN (1) | CN101513072B (ja) |
DE (1) | DE602007013775D1 (ja) |
WO (1) | WO2008027250A2 (ja) |
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US8982947B2 (en) * | 2007-07-20 | 2015-03-17 | The Hong Kong University Of Science And Technology | Rate control and video denoising for noisy video data |
KR20120084168A (ko) * | 2011-01-19 | 2012-07-27 | 삼성전자주식회사 | 비디오 인코딩 모드 선택 방법 및 이를 수행하는 비디오 인코딩 장치 |
EP2544450B1 (en) | 2011-07-07 | 2016-04-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Model parameter estimation for a rate- or distortion-quantization model function |
KR102114252B1 (ko) | 2013-07-05 | 2020-05-22 | 삼성전자 주식회사 | 영상을 부호화하기 위한 영상 예측 모드 결정 방법 및 장치 |
JP6145069B2 (ja) * | 2014-04-30 | 2017-06-07 | 日本電信電話株式会社 | 主観画質推定装置及び主観画質推定プログラム |
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DE69605523T2 (de) * | 1995-04-25 | 2000-07-06 | Koninkl Philips Electronics Nv | Vorrichtung und verfahren zur kodierung von videobildern. |
US6434196B1 (en) * | 1998-04-03 | 2002-08-13 | Sarnoff Corporation | Method and apparatus for encoding video information |
JP2003530736A (ja) * | 1999-11-29 | 2003-10-14 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | マルチメディアデータの符号化及び復号化方法 |
JP2002185966A (ja) * | 2000-12-15 | 2002-06-28 | Matsushita Electric Ind Co Ltd | 映像符号化装置 |
US6687294B2 (en) * | 2001-04-27 | 2004-02-03 | Koninklijke Philips Electronics N.V. | Distortion quantizer model for video encoding |
US7194035B2 (en) | 2003-01-08 | 2007-03-20 | Apple Computer, Inc. | Method and apparatus for improved coding mode selection |
US20060204115A1 (en) * | 2003-03-03 | 2006-09-14 | Dzevdet Burazerovic | Video encoding |
WO2004093462A1 (en) * | 2003-04-17 | 2004-10-28 | Koninklijke Philips Electronics N.V. | Content analysis of coded video data |
US7327786B2 (en) * | 2003-06-02 | 2008-02-05 | Lsi Logic Corporation | Method for improving rate-distortion performance of a video compression system through parallel coefficient cancellation in the transform |
KR100594056B1 (ko) * | 2003-09-01 | 2006-07-03 | 삼성전자주식회사 | 효율적인 비트율 제어를 위한 h.263/mpeg 비디오인코더 및 그 제어 방법 |
JP2006140758A (ja) * | 2004-11-12 | 2006-06-01 | Toshiba Corp | 動画像符号化方法、動画像符号化装置および動画像符号化プログラム |
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- 2007-08-21 JP JP2009526636A patent/JP5087624B2/ja not_active Expired - Fee Related
- 2007-08-21 DE DE602007013775T patent/DE602007013775D1/de active Active
- 2007-08-21 WO PCT/US2007/018481 patent/WO2008027250A2/en active Application Filing
- 2007-08-21 CN CN2007800323913A patent/CN101513072B/zh not_active Expired - Fee Related
- 2007-08-21 US US12/310,460 patent/US8265172B2/en not_active Expired - Fee Related
- 2007-08-21 EP EP07837138A patent/EP2060125B1/en not_active Expired - Fee Related
- 2007-08-21 KR KR1020097004287A patent/KR101377833B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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WO2008027250A2 (en) | 2008-03-06 |
CN101513072B (zh) | 2011-07-27 |
EP2060125A2 (en) | 2009-05-20 |
US20090232225A1 (en) | 2009-09-17 |
CN101513072A (zh) | 2009-08-19 |
EP2060125B1 (en) | 2011-04-06 |
KR101377833B1 (ko) | 2014-03-26 |
KR20090057236A (ko) | 2009-06-04 |
JP2010503265A (ja) | 2010-01-28 |
US8265172B2 (en) | 2012-09-11 |
DE602007013775D1 (de) | 2011-05-19 |
WO2008027250A3 (en) | 2008-05-22 |
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