WO2003045069A3 - Block size assignment using local contrast ratio - Google Patents
Block size assignment using local contrast ratio Download PDFInfo
- Publication number
- WO2003045069A3 WO2003045069A3 PCT/US2002/036779 US0236779W WO03045069A3 WO 2003045069 A3 WO2003045069 A3 WO 2003045069A3 US 0236779 W US0236779 W US 0236779W WO 03045069 A3 WO03045069 A3 WO 03045069A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- block
- contrast ratio
- pixels
- determined
- mean
- 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
- H04N19/10—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
- H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
-
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform 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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/96—Tree coding, e.g. quad-tree coding
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002346413A AU2002346413A1 (en) | 2001-11-16 | 2002-11-15 | Block size assignment using local contrast ratio |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US33248801P | 2001-11-16 | 2001-11-16 | |
US60/332,488 | 2001-11-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003045069A2 WO2003045069A2 (en) | 2003-05-30 |
WO2003045069A3 true WO2003045069A3 (en) | 2004-02-26 |
Family
ID=23298452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/036779 WO2003045069A2 (en) | 2001-11-16 | 2002-11-15 | Block size assignment using local contrast ratio |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2002346413A1 (en) |
WO (1) | WO2003045069A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9392272B1 (en) | 2014-06-02 | 2016-07-12 | Google Inc. | Video coding using adaptive source variance based partitioning |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7792188B2 (en) * | 2004-06-27 | 2010-09-07 | Apple Inc. | Selecting encoding types and predictive modes for encoding video data |
PL3595301T3 (en) * | 2009-10-01 | 2021-01-25 | Sk Telecom Co., Ltd | Method and apparatus for encoding/decoding image using variable-sized macroblocks |
US9578324B1 (en) | 2014-06-27 | 2017-02-21 | Google Inc. | Video coding using statistical-based spatially differentiated partitioning |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5021891A (en) * | 1990-02-27 | 1991-06-04 | Qualcomm, Inc. | Adaptive block size image compression method and system |
US5585944A (en) * | 1994-05-10 | 1996-12-17 | Kaleida Labs, Inc. | Method for compressing and decompressing images by subdividing pixel color distributions |
US5724451A (en) * | 1994-09-27 | 1998-03-03 | Samsung Electronics Co., Ltd. | Image compression method and apparatus using conditional quadtree split sysyem |
WO2001035673A1 (en) * | 1999-11-08 | 2001-05-17 | Qualcomm Incorporated | Variance based adaptive block size dct image compression |
-
2002
- 2002-11-15 WO PCT/US2002/036779 patent/WO2003045069A2/en not_active Application Discontinuation
- 2002-11-15 AU AU2002346413A patent/AU2002346413A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5021891A (en) * | 1990-02-27 | 1991-06-04 | Qualcomm, Inc. | Adaptive block size image compression method and system |
US5585944A (en) * | 1994-05-10 | 1996-12-17 | Kaleida Labs, Inc. | Method for compressing and decompressing images by subdividing pixel color distributions |
US5724451A (en) * | 1994-09-27 | 1998-03-03 | Samsung Electronics Co., Ltd. | Image compression method and apparatus using conditional quadtree split sysyem |
WO2001035673A1 (en) * | 1999-11-08 | 2001-05-17 | Qualcomm Incorporated | Variance based adaptive block size dct image compression |
Non-Patent Citations (3)
Title |
---|
CARBONARO A ET AL: "A comprehensive approach to image-contrast enhancement", IMAGE ANALYSIS AND PROCESSING, 1999. PROCEEDINGS. INTERNATIONAL CONFERENCE ON VENICE, ITALY 27-29 SEPT. 1999, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, 27 September 1999 (1999-09-27), pages 241 - 246, XP010354161, ISBN: 0-7695-0040-4 * |
GOLCHIN F ET AL: "QUADTREE BASED CLASSIFICATION WITH ARITHMETIC AND TRELLIS CODED QUANTIZATION FOR SUBBAND IMAGE CODING", 1997 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. MULTIDIMENSIONAL SIGNAL PROCESSING, NEURAL NETWORKS. MUNICH, APR. 21 - 24, 1997, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), LOS A, vol. 4, 21 April 1997 (1997-04-21), pages 2921 - 2924, XP000788023, ISBN: 0-8186-7920-4 * |
VERTAN C ET AL: "A Family Of Order Statistic Based Dissimilarity Measures And Their Application In Image Processing", OPTIM 1998. PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON OPTIMIZATION OF ELECTRICAL AND ELECTRONIC EQUIPMENTS, vol. 3, 14 May 1998 (1998-05-14), pages 711 - 714, XP010295773 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9392272B1 (en) | 2014-06-02 | 2016-07-12 | Google Inc. | Video coding using adaptive source variance based partitioning |
Also Published As
Publication number | Publication date |
---|---|
WO2003045069A2 (en) | 2003-05-30 |
AU2002346413A1 (en) | 2003-06-10 |
AU2002346413A8 (en) | 2003-06-10 |
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