JP5216710B2 - 復号化処理方法 - Google Patents
復号化処理方法 Download PDFInfo
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- JP5216710B2 JP5216710B2 JP2009172670A JP2009172670A JP5216710B2 JP 5216710 B2 JP5216710 B2 JP 5216710B2 JP 2009172670 A JP2009172670 A JP 2009172670A JP 2009172670 A JP2009172670 A JP 2009172670A JP 5216710 B2 JP5216710 B2 JP 5216710B2
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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
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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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
- H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
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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
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
- H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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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
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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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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- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Description
符号化部103については後述する。
逆量子化・逆周波数変換部203では、周波数変換・量子化部202にて行った処理とは逆の処理を行う。
図8に符号化/復号化対象領域Xの周辺領域(A、B、C、D)の予測画像が補間予測画像であるか、画面内予測画像または画面間予測画像であるか、を示した分布図の一例を示す。まず、符号化/復号化対象領域の周辺の領域の予測画像がすべて補間予測画像である場合(図8(a))、補間予測画像決定部にて符号化/復号化対象領域の予測画像として補間予測画像を用いることを決定する。なぜなら、対象領域の予測画像も補間予測画像である確率が高いためである。
Claims (5)
- 符号化ストリームを入力する入力ステップと、
前記符号化ストリームを復号化し、復号画像データを生成する生成ステップと、
前記復号画像データを出力する出力ステップと、を有し、
前記生成ステップにおいて、
画面内予測処理または前記符号化ストリームに含まれる動き情報を用いた画面間予測処理により生成した予測画像を用いて復号化処理を行うのか、または既に復号化された複数のフレーム間の動きベクトル探索を復号側で行い、該動きベクトル探索に基づいて補間処理を行って生成した補間予測画像を用いて復号化処理を行うのか、を既に復号化された複数の所定の領域の動きベクトル間の類似度に基づいて前記領域単位で決定する
ことを特徴とする復号化処理方法。 - 請求項1に記載の復号化処理方法であって、
前記既に復号化された複数の所定の領域は、
復号化対象領域と同フレーム内の領域であって、復号化対象領域に隣接する複数の領域である
ことを特徴とする復号化処理方法。 - 請求項1に記載の復号化処理方法であって、
前記既に復号化された複数の所定の領域は、
復号化対象領域が存在するフレームとは時間的に異なる既に復号化されたフレーム内の領域であって、復号化対象領域と同座標にある領域と該領域に隣接する領域である
ことを特徴とする復号化処理方法。 - 請求項1乃至3に記載の復号化処理方法であって、
前記類似度は、復号化対象領域に隣接する既に復号化された領域の動きベクトル間の差分に基づいた値である
ことを特徴とする復号化処理方法。 - 請求項1乃至3に記載の復号化処理方法であって、
前記類似度は、前記既に復号化された複数の所定の領域の動きベクトルの分散値に基づいた値である
ことを特徴とする復号化処理方法。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009172670A JP5216710B2 (ja) | 2009-07-24 | 2009-07-24 | 復号化処理方法 |
| US12/788,954 US20110019740A1 (en) | 2009-07-24 | 2010-05-27 | Video Decoding Method |
| CN201010194854XA CN101964908B (zh) | 2009-07-24 | 2010-05-31 | 解码处理方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009172670A JP5216710B2 (ja) | 2009-07-24 | 2009-07-24 | 復号化処理方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011029863A JP2011029863A (ja) | 2011-02-10 |
| JP5216710B2 true JP5216710B2 (ja) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009172670A Active JP5216710B2 (ja) | 2009-07-24 | 2009-07-24 | 復号化処理方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110019740A1 (ja) |
| JP (1) | JP5216710B2 (ja) |
| CN (1) | CN101964908B (ja) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6765964B1 (en) | 2000-12-06 | 2004-07-20 | Realnetworks, Inc. | System and method for intracoding video data |
| US9654792B2 (en) | 2009-07-03 | 2017-05-16 | Intel Corporation | Methods and systems for motion vector derivation at a video decoder |
| US8462852B2 (en) | 2009-10-20 | 2013-06-11 | Intel Corporation | Methods and apparatus for adaptively choosing a search range for motion estimation |
| US8917769B2 (en) | 2009-07-03 | 2014-12-23 | Intel Corporation | Methods and systems to estimate motion based on reconstructed reference frames at a video decoder |
| TW201204054A (en) * | 2010-01-14 | 2012-01-16 | Intel Corp | Techniques for motion estimation |
| US9509995B2 (en) | 2010-12-21 | 2016-11-29 | Intel Corporation | System and method for enhanced DMVD processing |
| JP5995583B2 (ja) * | 2012-07-26 | 2016-09-21 | キヤノン株式会社 | 画像符号化装置、画像復号装置、画像符号化方法、画像復号方法、及びプログラム |
| WO2014141964A1 (ja) * | 2013-03-14 | 2014-09-18 | ソニー株式会社 | 画像処理装置および方法 |
| JP6942892B2 (ja) * | 2018-08-01 | 2021-09-29 | オリンパス株式会社 | 内視鏡装置、内視鏡装置の作動方法及びプログラム |
| US10997731B2 (en) * | 2019-06-14 | 2021-05-04 | Rockwell Collins, Inc. | Motion vector vision system integrity monitor |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002152752A (ja) * | 2000-11-13 | 2002-05-24 | Sony Corp | 画像情報変換装置及び方法 |
| JP2003153271A (ja) * | 2001-11-08 | 2003-05-23 | Nec Corp | 動画像符号列変換装置、動画像符号列変換方法、およびそのプログラム |
| US9210441B2 (en) * | 2003-06-25 | 2015-12-08 | Thomson Licensing | Fast mode-decision encoding for interframes |
| JP4638874B2 (ja) * | 2004-08-11 | 2011-02-23 | 株式会社日立製作所 | 符号化ストリーム記録媒体、及び画像符号化装置 |
| JP2006246431A (ja) * | 2005-02-07 | 2006-09-14 | Matsushita Electric Ind Co Ltd | 画像符号化装置および画像符号化方法 |
| JP5013040B2 (ja) * | 2005-09-29 | 2012-08-29 | 株式会社メガチップス | 動き探索方法 |
| JP2007184800A (ja) * | 2006-01-10 | 2007-07-19 | Hitachi Ltd | 画像符号化装置、画像復号化装置、画像符号化方法及び画像復号化方法 |
| JP2007300209A (ja) * | 2006-04-27 | 2007-11-15 | Pioneer Electronic Corp | 動画像再符号化装置およびその動きベクトル判定方法 |
| JP2008017304A (ja) * | 2006-07-07 | 2008-01-24 | Nippon Hoso Kyokai <Nhk> | 画像符号化装置、画像復号装置、画像符号化方法、及び画像符号化するプログラム |
| JP2008154015A (ja) * | 2006-12-19 | 2008-07-03 | Hitachi Ltd | 復号化方法および符号化方法 |
| KR101383540B1 (ko) * | 2007-01-03 | 2014-04-09 | 삼성전자주식회사 | 복수의 움직임 벡터 프리딕터들을 사용하여 움직임 벡터를추정하는 방법, 장치, 인코더, 디코더 및 복호화 방법 |
| JP5185266B2 (ja) * | 2007-07-02 | 2013-04-17 | 日本電信電話株式会社 | 動画像スケーラブル符号化方法及び復号方法、それらの装置、それらのプログラム並びにプログラムを記録した記録媒体 |
| JP2009094828A (ja) * | 2007-10-10 | 2009-04-30 | Hitachi Ltd | 画像符号化装置及び画像符号化方法、画像復号化装置及び画像復号化方法 |
-
2009
- 2009-07-24 JP JP2009172670A patent/JP5216710B2/ja active Active
-
2010
- 2010-05-27 US US12/788,954 patent/US20110019740A1/en not_active Abandoned
- 2010-05-31 CN CN201010194854XA patent/CN101964908B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101964908A (zh) | 2011-02-02 |
| US20110019740A1 (en) | 2011-01-27 |
| JP2011029863A (ja) | 2011-02-10 |
| CN101964908B (zh) | 2013-12-11 |
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