CA2326785A1 - Methods and apparatus for context selection of block transform coefficients - Google Patents
Methods and apparatus for context selection of block transform coefficients Download PDFInfo
- Publication number
- CA2326785A1 CA2326785A1 CA002326785A CA2326785A CA2326785A1 CA 2326785 A1 CA2326785 A1 CA 2326785A1 CA 002326785 A CA002326785 A CA 002326785A CA 2326785 A CA2326785 A CA 2326785A CA 2326785 A1 CA2326785 A1 CA 2326785A1
- Authority
- CA
- Canada
- Prior art keywords
- block transform
- block
- transform coefficient
- context selection
- selection value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000000007 visual effect Effects 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000013139 quantization Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010187 selection method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- H04N19/10—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
- H04N19/124—Quantisation
- H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
-
- 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/452,990 | 1999-12-02 | ||
| US09/452,990 US6680974B1 (en) | 1999-12-02 | 1999-12-02 | Methods and apparatus for context selection of block transform coefficients |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2326785A1 true CA2326785A1 (en) | 2001-06-02 |
Family
ID=23798784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002326785A Abandoned CA2326785A1 (en) | 1999-12-02 | 2000-11-22 | Methods and apparatus for context selection of block transform coefficients |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6680974B1 (enExample) |
| EP (1) | EP1107608B1 (enExample) |
| JP (6) | JP5220247B2 (enExample) |
| CA (1) | CA2326785A1 (enExample) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030228068A1 (en) * | 2002-06-11 | 2003-12-11 | General Electric Company | Progressive transmission and reception of image data using modified hadamard transform |
| US7656319B2 (en) | 2004-07-14 | 2010-02-02 | Agency For Science, Technology And Research | Context-based encoding and decoding of signals |
| JP2008042497A (ja) * | 2006-08-04 | 2008-02-21 | Seiko Epson Corp | デコード装置、情報再生装置及び電子機器 |
| CN100583649C (zh) * | 2007-07-23 | 2010-01-20 | 华为技术有限公司 | 矢量编/解码方法、装置及流媒体播放器 |
| FR2955730A1 (fr) * | 2010-01-25 | 2011-07-29 | Thomson Licensing | Procedes de codage et de decodage |
| KR101502495B1 (ko) | 2010-04-13 | 2015-03-13 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 유효성 맵 및 변환 계수 블록의 코딩 |
| US9042440B2 (en) | 2010-12-03 | 2015-05-26 | Qualcomm Incorporated | Coding the position of a last significant coefficient within a video block based on a scanning order for the block in video coding |
| US8976861B2 (en) | 2010-12-03 | 2015-03-10 | Qualcomm Incorporated | Separately coding the position of a last significant coefficient of a video block in video coding |
| US20120163456A1 (en) | 2010-12-22 | 2012-06-28 | Qualcomm Incorporated | Using a most probable scanning order to efficiently code scanning order information for a video block in video coding |
| US10142637B2 (en) * | 2011-03-08 | 2018-11-27 | Texas Instruments Incorporated | Method and apparatus for parallelizing context selection in video processing |
| US9106913B2 (en) | 2011-03-08 | 2015-08-11 | Qualcomm Incorporated | Coding of transform coefficients for video coding |
| US10499059B2 (en) | 2011-03-08 | 2019-12-03 | Velos Media, Llc | Coding of transform coefficients for video coding |
| US9491469B2 (en) | 2011-06-28 | 2016-11-08 | Qualcomm Incorporated | Coding of last significant transform coefficient |
| CN104137541B (zh) * | 2011-10-31 | 2018-07-20 | 南洋理工大学 | 无损图像和视频压缩方法及装置 |
| US9621894B2 (en) | 2012-01-13 | 2017-04-11 | Qualcomm Incorporated | Determining contexts for coding transform coefficient data in video coding |
| US9538175B2 (en) * | 2012-09-26 | 2017-01-03 | Qualcomm Incorporated | Context derivation for context-adaptive, multi-level significance coding |
| US9813760B2 (en) | 2012-10-31 | 2017-11-07 | Nanyang Technological University | Multi-screen media delivery systems and methods |
| CN103686173B (zh) * | 2014-01-09 | 2017-03-01 | 英特尔公司 | 变换与反变换电路 |
| CN108616686B (zh) * | 2016-12-12 | 2020-09-11 | 南京理工大学 | 一种全哈达玛矩阵编码成像方法 |
| US10484695B2 (en) | 2017-10-23 | 2019-11-19 | Google Llc | Refined entropy coding for level maps |
| EP4213096A1 (en) | 2018-01-18 | 2023-07-19 | BlackBerry Limited | Methods and devices for entropy coding point clouds |
| JP7119488B2 (ja) * | 2018-03-27 | 2022-08-17 | セイコーエプソン株式会社 | プロジェクター、及び、プロジェクターの制御方法 |
| EP3937132B1 (en) * | 2018-04-09 | 2025-05-28 | BlackBerry Limited | Methods and devices for binary entropy coding of point clouds |
| US10645381B2 (en) | 2018-04-30 | 2020-05-05 | Google Llc | Intra-prediction for smooth blocks in image/video |
| US11006150B2 (en) * | 2018-09-24 | 2021-05-11 | Tencent America LLC | Method and apparatus for video coding |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2865847B2 (ja) * | 1990-10-16 | 1999-03-08 | 株式会社日立製作所 | 動画像符号化方法 |
| US6222881B1 (en) * | 1994-10-18 | 2001-04-24 | Intel Corporation | Using numbers of non-zero quantized transform signals and signal differences to determine when to encode video signals using inter-frame or intra-frame encoding |
| US5644361A (en) * | 1994-11-30 | 1997-07-01 | National Semiconductor Corporation | Subsampled frame storage technique for reduced memory size |
| JP3792762B2 (ja) * | 1995-09-22 | 2006-07-05 | キヤノン株式会社 | 画像処理装置および画像処理方法 |
| GB2311183A (en) | 1996-03-13 | 1997-09-17 | Innovision Plc | Gradient based motion estimation |
| GB2321375B (en) * | 1997-01-21 | 2002-02-27 | Fujitsu Ltd | Data encoding method and apparatus and data decoding method and apparatus |
| FI107496B (fi) * | 1997-07-18 | 2001-08-15 | Nokia Mobile Phones Ltd | Kuvan kompressointi |
| SE512291C2 (sv) * | 1997-09-23 | 2000-02-28 | Ericsson Telefon Ab L M | Inbäddad DCT-baserad stillbildskodningsalgoritm |
| EP0914004A1 (en) | 1997-10-29 | 1999-05-06 | Ntec Media GmbH | Coding system and method for lossless and lossy compression of still and motion images |
| US6272180B1 (en) * | 1997-11-21 | 2001-08-07 | Sharp Laboratories Of America, Inc. | Compression and decompression of reference frames in a video decoder |
| US6219457B1 (en) * | 1998-05-26 | 2001-04-17 | Silicon Graphics, Inc. | Method and system for decoding data encoded in a variable length code word |
| US6625215B1 (en) | 1999-06-07 | 2003-09-23 | Lucent Technologies Inc. | Methods and apparatus for context-based inter/intra coding mode selection |
-
1999
- 1999-12-02 US US09/452,990 patent/US6680974B1/en not_active Expired - Lifetime
-
2000
- 2000-11-22 CA CA002326785A patent/CA2326785A1/en not_active Abandoned
- 2000-11-27 EP EP00310521.0A patent/EP1107608B1/en not_active Expired - Lifetime
- 2000-12-01 JP JP2000366551A patent/JP5220247B2/ja not_active Expired - Lifetime
-
2012
- 2012-09-28 JP JP2012215856A patent/JP5693539B2/ja not_active Expired - Lifetime
- 2012-09-28 JP JP2012215857A patent/JP5693540B2/ja not_active Expired - Lifetime
-
2014
- 2014-09-29 JP JP2014198367A patent/JP5869642B2/ja not_active Expired - Lifetime
- 2014-11-07 JP JP2014226938A patent/JP2015065671A/ja active Pending
-
2016
- 2016-04-08 JP JP2016078018A patent/JP2016167831A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US6680974B1 (en) | 2004-01-20 |
| EP1107608B1 (en) | 2013-07-24 |
| JP5869642B2 (ja) | 2016-02-24 |
| JP2013051694A (ja) | 2013-03-14 |
| EP1107608A2 (en) | 2001-06-13 |
| JP5693540B2 (ja) | 2015-04-01 |
| JP2001204031A (ja) | 2001-07-27 |
| JP2015065671A (ja) | 2015-04-09 |
| JP2015027096A (ja) | 2015-02-05 |
| JP5220247B2 (ja) | 2013-06-26 |
| JP2016167831A (ja) | 2016-09-15 |
| EP1107608A3 (en) | 2004-01-14 |
| JP2013038809A (ja) | 2013-02-21 |
| JP5693539B2 (ja) | 2015-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |