CN101073075B - 用于改进的逆变换计算的方法和设备 - Google Patents
用于改进的逆变换计算的方法和设备 Download PDFInfo
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- CN101073075B CN101073075B CN200480028894XA CN200480028894A CN101073075B CN 101073075 B CN101073075 B CN 101073075B CN 200480028894X A CN200480028894X A CN 200480028894XA CN 200480028894 A CN200480028894 A CN 200480028894A CN 101073075 B CN101073075 B CN 101073075B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004364 calculation method Methods 0.000 title description 4
- 238000013139 quantization Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 11
- 230000009466 transformation Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 230000007704 transition Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
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Classifications
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
- G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
-
- 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
- H04N19/134—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
-
- 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
-
- 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
- H04N19/42—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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Discrete Mathematics (AREA)
- Mathematical Analysis (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Algebra (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Complex Calculations (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0323038.0 | 2003-10-02 | ||
GBGB0323038.0A GB0323038D0 (en) | 2003-10-02 | 2003-10-02 | Method and apparatus for improved inverse transform calculation |
PCT/IB2004/051918 WO2005033966A2 (en) | 2003-10-02 | 2004-09-29 | Method and apparatus for improved inverse transform calculation |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101073075A CN101073075A (zh) | 2007-11-14 |
CN101073075B true CN101073075B (zh) | 2010-10-27 |
Family
ID=29415339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200480028894XA Expired - Fee Related CN101073075B (zh) | 2003-10-02 | 2004-09-29 | 用于改进的逆变换计算的方法和设备 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070003153A1 (zh) |
EP (1) | EP1668535A2 (zh) |
JP (1) | JP2007507785A (zh) |
KR (1) | KR20060090987A (zh) |
CN (1) | CN101073075B (zh) |
GB (1) | GB0323038D0 (zh) |
WO (1) | WO2005033966A2 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8699810B2 (en) * | 2006-06-26 | 2014-04-15 | Qualcomm Incorporated | Efficient fixed-point approximations of forward and inverse discrete cosine transforms |
US8385424B2 (en) * | 2006-06-26 | 2013-02-26 | Qualcomm Incorporated | Reduction of errors during computation of inverse discrete cosine transform |
US8300698B2 (en) * | 2006-10-23 | 2012-10-30 | Qualcomm Incorporated | Signalling of maximum dynamic range of inverse discrete cosine transform |
JP5482474B2 (ja) * | 2010-06-09 | 2014-05-07 | 富士通株式会社 | 符号化装置及び符号化プログラム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1142162A (zh) * | 1995-01-28 | 1997-02-05 | 大宇电子株式会社 | 二维逆离散余弦变换电路 |
EP1349395A2 (en) * | 2002-03-29 | 2003-10-01 | Seiko Epson Corporation | Moving picture coding method, moving picture coding apparatus, and moving picture coding program |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6400680B1 (en) * | 1997-12-30 | 2002-06-04 | Koninklijke Philips Electronics N.V. | Data transformation of the inverse-fourier type |
US20020027954A1 (en) * | 1998-06-30 | 2002-03-07 | Kenneth S. Singh | Method and device for gathering block statistics during inverse quantization and iscan |
US7079697B2 (en) * | 2001-03-19 | 2006-07-18 | Texas Instruments Incorporated | Image compression with transform coefficient analysis |
-
2003
- 2003-10-02 GB GBGB0323038.0A patent/GB0323038D0/en not_active Ceased
-
2004
- 2004-09-29 EP EP04770129A patent/EP1668535A2/en not_active Withdrawn
- 2004-09-29 CN CN200480028894XA patent/CN101073075B/zh not_active Expired - Fee Related
- 2004-09-29 JP JP2006530948A patent/JP2007507785A/ja active Pending
- 2004-09-29 WO PCT/IB2004/051918 patent/WO2005033966A2/en active Application Filing
- 2004-09-29 US US10/573,738 patent/US20070003153A1/en not_active Abandoned
- 2004-09-29 KR KR1020067006315A patent/KR20060090987A/ko not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1142162A (zh) * | 1995-01-28 | 1997-02-05 | 大宇电子株式会社 | 二维逆离散余弦变换电路 |
EP1349395A2 (en) * | 2002-03-29 | 2003-10-01 | Seiko Epson Corporation | Moving picture coding method, moving picture coding apparatus, and moving picture coding program |
Non-Patent Citations (4)
Title |
---|
M.Zhou ET AL.IDCT output range before clipping in MPEG video coding.SIGNAL PROCESSING:IMAGE COMMUNICAION11 2.1997,11(2),137-145. |
M.Zhou ET AL.IDCT output range before clipping in MPEG video coding.SIGNAL PROCESSING:IMAGE COMMUNICAION11 2.1997,11(2),137-145. * |
周璇等.H.263中预先判别全零系数的新方法.上海交通大学学报32 9.1998,32(9),107-109. |
周璇等.H.263中预先判别全零系数的新方法.上海交通大学学报32 9.1998,32(9),107-109. * |
Also Published As
Publication number | Publication date |
---|---|
US20070003153A1 (en) | 2007-01-04 |
WO2005033966A3 (en) | 2006-07-06 |
CN101073075A (zh) | 2007-11-14 |
EP1668535A2 (en) | 2006-06-14 |
JP2007507785A (ja) | 2007-03-29 |
WO2005033966A2 (en) | 2005-04-14 |
KR20060090987A (ko) | 2006-08-17 |
GB0323038D0 (en) | 2003-11-05 |
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Owner name: NXP CO., LTD. Free format text: FORMER OWNER: KONINKLIJKE PHILIPS ELECTRONICS N.V. Effective date: 20080509 |
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