WO2008126139A1 - 画像データ圧縮装置及び復号装置 - Google Patents
画像データ圧縮装置及び復号装置 Download PDFInfo
- Publication number
- WO2008126139A1 WO2008126139A1 PCT/JP2007/000339 JP2007000339W WO2008126139A1 WO 2008126139 A1 WO2008126139 A1 WO 2008126139A1 JP 2007000339 W JP2007000339 W JP 2007000339W WO 2008126139 A1 WO2008126139 A1 WO 2008126139A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency component
- prediction
- filter coefficients
- image data
- high frequency
- Prior art date
Links
Classifications
-
- 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
- H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
- H04N19/635—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by filter definition or implementation details
-
- 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
- H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
-
- 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
- H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
-
- 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
-
- 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
- H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
画像データを1次元サブバンド符号化により圧縮する際、まず画像データを1次元サブバンド符号化にしたがった低周波成分と高周波成分に分離してフィルタ係数を算出するとともに、算出した低周波成分と高周波成分に係るフィルタ係数についてスラント変換(SLT)をベースにしたフィルタ係数予測を行う。この場合、算出された現ラインの低周波成分と高周波成分に係る各フィルタ係数の予測を行うためにラインメモリに保持された前ラインで算出された低周波成分と高周波成分に係るフィルタ係数の予測値を参照してフィルタ係数毎に異なる予測手段に切り替えて予測を行う。このような予測方法を採ることにより予測誤差の少ない予測を少ない計算量で実現することができ、1次元サブバンド符号化を採る画像データの圧縮であっても画質および圧縮率を向上させることができる。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/000339 WO2008126139A1 (ja) | 2007-03-30 | 2007-03-30 | 画像データ圧縮装置及び復号装置 |
JP2009508693A JP4729118B2 (ja) | 2007-03-30 | 2007-03-30 | 画像データ圧縮装置及び復号装置 |
US12/568,099 US8306341B2 (en) | 2007-03-30 | 2009-09-28 | Image data compression apparatus and decoding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2007/000339 WO2008126139A1 (ja) | 2007-03-30 | 2007-03-30 | 画像データ圧縮装置及び復号装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/568,099 Continuation US8306341B2 (en) | 2007-03-30 | 2009-09-28 | Image data compression apparatus and decoding apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008126139A1 true WO2008126139A1 (ja) | 2008-10-23 |
Family
ID=39863325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/000339 WO2008126139A1 (ja) | 2007-03-30 | 2007-03-30 | 画像データ圧縮装置及び復号装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8306341B2 (ja) |
JP (1) | JP4729118B2 (ja) |
WO (1) | WO2008126139A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101492930B1 (ko) * | 2010-09-14 | 2015-02-23 | 블랙베리 리미티드 | 변환 도메인 내의 어댑티브 필터링을 이용한 데이터 압축 방법 및 장치 |
US9813711B2 (en) * | 2012-10-03 | 2017-11-07 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Hybrid transform-based compression |
US8879858B1 (en) | 2013-10-01 | 2014-11-04 | Gopro, Inc. | Multi-channel bit packing engine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961279A (ja) * | 1982-09-29 | 1984-04-07 | Fuji Photo Film Co Ltd | 画像信号の適応形量子化方式 |
JPS63280576A (ja) * | 1987-05-12 | 1988-11-17 | Nec Corp | 圧縮符号化方法 |
JP2005218124A (ja) * | 1996-05-03 | 2005-08-11 | Ricoh Co Ltd | データ圧縮システム |
JP2006517065A (ja) * | 2003-01-13 | 2006-07-13 | ノキア コーポレイション | 限定されたビット数を用いる画像処理 |
JP2006270392A (ja) * | 2005-03-23 | 2006-10-05 | Canon Inc | 画像予測符号化装置 |
WO2007010690A1 (ja) * | 2005-07-22 | 2007-01-25 | Mitsubishi Electric Corporation | 画像符号化装置、画像復号装置、および画像符号化方法、画像復号方法、画像符号化プログラム、画像復号プログラム、ならびに画像符号化プログラムを記録したコンピュータ読み取り可能な記録媒体、画像復号プログラムを記録したコンピュータ読み取り可能な記録媒体 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0482180B1 (en) * | 1990-05-14 | 1997-07-23 | Eastman Kodak Company | Block adaptive linear predictive coding with adaptive gain and bias |
JPH0779251B2 (ja) | 1990-05-15 | 1995-08-23 | 日本電信電話株式会社 | サブバンドフィルタ及びサブバンド符号化方式 |
JP2933457B2 (ja) * | 1993-02-18 | 1999-08-16 | 日本電気株式会社 | ウェーブレット変換符号化方法 |
US5748786A (en) * | 1994-09-21 | 1998-05-05 | Ricoh Company, Ltd. | Apparatus for compression using reversible embedded wavelets |
US5881176A (en) * | 1994-09-21 | 1999-03-09 | Ricoh Corporation | Compression and decompression with wavelet style and binary style including quantization by device-dependent parser |
US5777678A (en) * | 1995-10-26 | 1998-07-07 | Sony Corporation | Predictive sub-band video coding and decoding using motion compensation |
US6765963B2 (en) * | 2001-01-03 | 2004-07-20 | Nokia Corporation | Video decoder architecture and method for using same |
US8150183B2 (en) * | 2006-09-25 | 2012-04-03 | Research Foundation Of The City University Of New York | Predictive-transform source coding with subbands |
-
2007
- 2007-03-30 WO PCT/JP2007/000339 patent/WO2008126139A1/ja active Application Filing
- 2007-03-30 JP JP2009508693A patent/JP4729118B2/ja not_active Expired - Fee Related
-
2009
- 2009-09-28 US US12/568,099 patent/US8306341B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5961279A (ja) * | 1982-09-29 | 1984-04-07 | Fuji Photo Film Co Ltd | 画像信号の適応形量子化方式 |
JPS63280576A (ja) * | 1987-05-12 | 1988-11-17 | Nec Corp | 圧縮符号化方法 |
JP2005218124A (ja) * | 1996-05-03 | 2005-08-11 | Ricoh Co Ltd | データ圧縮システム |
JP2006517065A (ja) * | 2003-01-13 | 2006-07-13 | ノキア コーポレイション | 限定されたビット数を用いる画像処理 |
JP2006270392A (ja) * | 2005-03-23 | 2006-10-05 | Canon Inc | 画像予測符号化装置 |
WO2007010690A1 (ja) * | 2005-07-22 | 2007-01-25 | Mitsubishi Electric Corporation | 画像符号化装置、画像復号装置、および画像符号化方法、画像復号方法、画像符号化プログラム、画像復号プログラム、ならびに画像符号化プログラムを記録したコンピュータ読み取り可能な記録媒体、画像復号プログラムを記録したコンピュータ読み取り可能な記録媒体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008126139A1 (ja) | 2010-07-15 |
US20100080479A1 (en) | 2010-04-01 |
JP4729118B2 (ja) | 2011-07-20 |
US8306341B2 (en) | 2012-11-06 |
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