CN1672422A - 用于减少图像中块状假像的数字滤波器 - Google Patents
用于减少图像中块状假像的数字滤波器 Download PDFInfo
- Publication number
- CN1672422A CN1672422A CNA038176246A CN03817624A CN1672422A CN 1672422 A CN1672422 A CN 1672422A CN A038176246 A CNA038176246 A CN A038176246A CN 03817624 A CN03817624 A CN 03817624A CN 1672422 A CN1672422 A CN 1672422A
- Authority
- CN
- China
- Prior art keywords
- data
- conversion
- filtering
- filter
- filter circuit
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 title abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 claims description 83
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 24
- 238000007792 addition Methods 0.000 description 22
- 238000012937 correction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000009021 linear effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000001915 proofreading effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
Images
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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
- H04N19/527—Global motion vector 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
- H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
-
- 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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Mathematical Optimization (AREA)
- Software Systems (AREA)
- Databases & Information Systems (AREA)
- Algebra (AREA)
- General Engineering & Computer Science (AREA)
- Discrete Mathematics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Image Processing (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Picture Signal Circuits (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
kwped | Q<10 | Q>10 | ||
FILe | FILo | FILe | FILo | |
2 | - | 3,5,7 | 4,6 | 3,5,7 |
4 | - | 5,7 | 6 | 5,7 |
6 | - | 7 | - | 7 |
8 | - | - | - | - |
配置 | 滤波后的数据 | 加法 | 乘法 |
传统 | 76 | 32 | |
滤波步骤 | - | 18 | 6 |
A | 7 | 33 | 14 |
B | 5,7 | 44 | 22 |
C | 3,5,7 | 37 | 14 |
D | 5,6,7 | 49 | 24 |
E | 3,4,5,6,7 | 42 | 16 |
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR02/09391 | 2002-07-24 | ||
FR0209391A FR2842981A1 (fr) | 2002-07-24 | 2002-07-24 | Circuit de filtrage de donnees numeriques |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1672422A true CN1672422A (zh) | 2005-09-21 |
CN1330187C CN1330187C (zh) | 2007-08-01 |
Family
ID=30011445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB038176246A Expired - Fee Related CN1330187C (zh) | 2002-07-24 | 2003-07-08 | 用于减少图像中块状假像的数字滤波器 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7725515B2 (zh) |
EP (1) | EP1527609A1 (zh) |
JP (1) | JP2005534223A (zh) |
KR (1) | KR100994908B1 (zh) |
CN (1) | CN1330187C (zh) |
AU (1) | AU2003247013A1 (zh) |
FR (1) | FR2842981A1 (zh) |
WO (1) | WO2004010705A1 (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100715512B1 (ko) * | 2005-05-16 | 2007-05-04 | 엠텍비젼 주식회사 | 이미지 처리 장치 및 그 방법 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3883726A (en) * | 1971-09-22 | 1975-05-13 | Interstate Electronics Corp | Redundant fast fourier transform data handling computer |
US4237551A (en) * | 1978-12-22 | 1980-12-02 | Granger Associates | Transmultiplexer |
US5819035A (en) | 1995-10-20 | 1998-10-06 | Matsushita Electric Industrial Co., Ltd. | Post-filter for removing ringing artifacts of DCT coding |
KR100243225B1 (ko) | 1997-07-16 | 2000-02-01 | 윤종용 | 블록화효과 및 링잉잡음 감소를 위한 신호적응필터링방법 및신호적응필터 |
US6134571A (en) * | 1998-04-29 | 2000-10-17 | Hewlett-Packard Company | Implicit DST-based filter operating in the DCT domain |
-
2002
- 2002-07-24 FR FR0209391A patent/FR2842981A1/fr not_active Withdrawn
-
2003
- 2003-07-08 EP EP03765242A patent/EP1527609A1/en not_active Withdrawn
- 2003-07-08 AU AU2003247013A patent/AU2003247013A1/en not_active Abandoned
- 2003-07-08 KR KR1020057001128A patent/KR100994908B1/ko not_active IP Right Cessation
- 2003-07-08 US US10/522,084 patent/US7725515B2/en not_active Expired - Fee Related
- 2003-07-08 CN CNB038176246A patent/CN1330187C/zh not_active Expired - Fee Related
- 2003-07-08 JP JP2004522625A patent/JP2005534223A/ja active Pending
- 2003-07-08 WO PCT/IB2003/003065 patent/WO2004010705A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FR2842981A1 (fr) | 2004-01-30 |
US7725515B2 (en) | 2010-05-25 |
EP1527609A1 (en) | 2005-05-04 |
CN1330187C (zh) | 2007-08-01 |
JP2005534223A (ja) | 2005-11-10 |
KR100994908B1 (ko) | 2010-11-16 |
KR20050027253A (ko) | 2005-03-18 |
AU2003247013A1 (en) | 2004-02-09 |
US20050248363A1 (en) | 2005-11-10 |
WO2004010705A1 (en) | 2004-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1112045C (zh) | 用反复误差数据编码方法进行视频压缩 | |
CN1110961C (zh) | 用于消除dct编码的振铃现象的滤波装置和方法 | |
CN1214645C (zh) | 用于减少量化效应的图像数据后处理方法和装置 | |
CN1565083A (zh) | 减少位深的量子化方法 | |
CN1219327A (zh) | 用于hdtv下变换系统的上升抽样滤波器与半象素发生器 | |
CN1713730A (zh) | 估计图像噪声的方法和设备和消除噪声的方法和记录介质 | |
CN101068364A (zh) | 视频编码器与图形处理单元 | |
CN1592410A (zh) | 图象数据的自适应可变长度编码方法 | |
CN1549988A (zh) | 以无损的方式编码数字图像数据的设备和方法 | |
CN1287598C (zh) | 用于消除区块效应和/或铃振噪声的滤波方法和装置 | |
CN101272489B (zh) | 视频图像质量增强的编解码装置与编解码方法 | |
CN100340117C (zh) | 照片图象杂波清除方法 | |
CN1235483A (zh) | 预测滤波器 | |
CN1882083A (zh) | 一种降低图像方块效应的方法 | |
CN1650635A (zh) | 对低速率应用的数字图像进行处理的方法 | |
CN1290335C (zh) | 对被编码的视频信号同时进行格式压缩和解码的方法 | |
CN1246242A (zh) | 用于从压缩图像数据恢复高频成分的改进的估算器 | |
CN1193621C (zh) | 调整计算复杂度的方法、对离散余弦反变换进行近似计算的方法和一种解码器 | |
CN1878308A (zh) | 用于图像和视频压缩的正交变换方法 | |
CN1914926A (zh) | 运动图像编码方法和设备以及运动图像解码方法和设备 | |
CN1201592C (zh) | 检测是否按照根据块编码技术对图像进行编码的方法 | |
CN1672422A (zh) | 用于减少图像中块状假像的数字滤波器 | |
CN1445999A (zh) | 运用于图象编码和视频编码的整数变换方法和装置 | |
CN1758758A (zh) | 可变换或逆变换不同大小的块的变换或逆变换方法和设备 | |
CN1449196A (zh) | 低比特率应用的数字图像处理方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: NXP CO., LTD. Free format text: FORMER OWNER: KONINKLIJKE PHILIPS ELECTRONICS N.V. Effective date: 20070727 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20070727 Address after: Holland Ian Deho Finn Patentee after: Koninkl Philips Electronics NV Address before: Holland Ian Deho Finn Patentee before: Koninklijke Philips Electronics N.V. |
|
ASS | Succession or assignment of patent right |
Owner name: TRIDENT MICROSYSTEMS (FAR EAST)CO., LTD. Free format text: FORMER OWNER: KONINKL PHILIPS ELECTRONICS NV Effective date: 20100819 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: EINDHOVEN, NETHERLANDS TO: CAYMAN ISLANDS, GRAND CAYMAN ISLAND |
|
TR01 | Transfer of patent right |
Effective date of registration: 20100819 Address after: Grand Cayman, Cayman Islands Patentee after: Trident Microsystems (Far East) Ltd. Address before: Holland Ian Deho Finn Patentee before: Koninkl Philips Electronics NV |
|
ASS | Succession or assignment of patent right |
Owner name: ENTROPY COMMUNICATION CO., LTD. Free format text: FORMER OWNER: TRIDENT MICROSYSTEMS (FAR EAST) LTD. Effective date: 20130218 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20130218 Address after: American California Patentee after: Entropic Communications, Inc. Address before: Grand Cayman, Cayman Islands Patentee before: Trident Microsystems (Far East) Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20170708 |
|
CF01 | Termination of patent right due to non-payment of annual fee |