MX9708188A - Metodo y aparato de postprocesamiento mejorado para su uso en un sistema de descodificacion de señal de imagen. - Google Patents
Metodo y aparato de postprocesamiento mejorado para su uso en un sistema de descodificacion de señal de imagen.Info
- Publication number
- MX9708188A MX9708188A MX9708188A MX9708188A MX9708188A MX 9708188 A MX9708188 A MX 9708188A MX 9708188 A MX9708188 A MX 9708188A MX 9708188 A MX9708188 A MX 9708188A MX 9708188 A MX9708188 A MX 9708188A
- Authority
- MX
- Mexico
- Prior art keywords
- pixel data
- target pixel
- filtered
- selection
- selection signal
- Prior art date
Links
- 238000012805 post-processing Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 abstract 2
- 230000004044 response Effects 0.000 abstract 2
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
-
- 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
- H04N19/85—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)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
Se presenta un aparato de filtracion de postprocesamiento para su uso en un sistema de descodificacion de señales, capaz de mejorar la calidad de la imagen del sistema, que comprende: un dispositivo de memoria para almacenar los datos descodificados de imagen del cuadro actual; una memoria intermedia para almacenar un dato de pixel blanco; un dispositivo para facilitar un dato de pixel blanco; un dispositivo para filtrar un dato de pixel blanco para proporcionar un dato de pixel blanco filtrado; un dispositivo para adicionar un umbral predeterminado al dato de pixel blanco, proporcionando así un valor superior; un primer dispositivo de comparacion para comparar el dato de pixel blanco filtrado con el valor superior para proporcionar una primera señal de seleccion; un primer dispositivo de seleccion para seleccionar, en respuesta a la primera señal de seleccion, el dato de pixel blanco almacenado en la memoria intermedia o bien el dato de pixel blanco filtrado; un dispositivo para sustraer el umbral blanco filtrado; un dispositivo para sustraer el umbral predeterminado del dato de pixel blanco, proporcionando así un valor inferior; un segundo dispositivo de comparacion para comparar ya sea los datos de pixel blanco filtrados o bien el dato de pixel blanco seleccionado en el primer dispositivo una segunda señal de seleccion; un segundo dispositivo de seleccion para seleccionar, en respuesta a la segunda señal de seleccion, el dato de pixel blanco, o bien el dato de pixel blanco filtrado o bien el dato de pixel blanco seleccionado en el primer dispositivo de seleccion para proporcionar de esta forma un resultado filtrado; y un dispositivo para actualizar el dato de pixel blanco almacenado en el dispositivo de memoria con el resultado filtrado.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950010440A KR960039992A (ko) | 1995-04-29 | 1995-04-29 | 블록화 현상 제거 장치 및 이를 이용한 동영상 복호화기 |
PCT/KR1996/000055 WO1996035295A1 (en) | 1995-04-29 | 1996-04-25 | Improved post-processing method and apparatus for use in an image signal decoding system |
Publications (1)
Publication Number | Publication Date |
---|---|
MX9708188A true MX9708188A (es) | 1997-12-31 |
Family
ID=19413343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9708188A MX9708188A (es) | 1995-04-29 | 1996-04-25 | Metodo y aparato de postprocesamiento mejorado para su uso en un sistema de descodificacion de señal de imagen. |
Country Status (11)
Country | Link |
---|---|
US (1) | US5734757A (es) |
EP (1) | EP0886972B1 (es) |
JP (1) | JPH11504482A (es) |
KR (1) | KR960039992A (es) |
CN (1) | CN1139255C (es) |
CA (1) | CA2219746A1 (es) |
DE (1) | DE69619707T2 (es) |
MX (1) | MX9708188A (es) |
PL (1) | PL180169B1 (es) |
RU (1) | RU2154917C2 (es) |
WO (1) | WO1996035295A1 (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100219628B1 (ko) * | 1997-02-15 | 1999-09-01 | 윤종용 | 루프필터링 방법 및 루프필터 |
KR100251549B1 (ko) * | 1997-02-28 | 2000-04-15 | 구자홍 | 블로킹 효과 제거 기능을 갖는 디지탈 영상 복호화 장치 |
US7003174B2 (en) * | 2001-07-02 | 2006-02-21 | Corel Corporation | Removal of block encoding artifacts |
KR100679035B1 (ko) | 2005-01-04 | 2007-02-06 | 삼성전자주식회사 | 인트라 bl 모드를 고려한 디블록 필터링 방법, 및 상기방법을 이용하는 다 계층 비디오 인코더/디코더 |
JP4747975B2 (ja) * | 2006-07-14 | 2011-08-17 | ソニー株式会社 | 画像処理装置および方法、プログラム、並びに、記録媒体 |
EP2375747B1 (en) | 2010-04-12 | 2019-03-13 | Sun Patent Trust | Filter positioning and selection |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60120482A (ja) * | 1983-12-02 | 1985-06-27 | Canon Inc | 画像信号処理装置 |
US4941043A (en) * | 1988-06-14 | 1990-07-10 | Siemens Aktiengesellschaft | Method for reducing blocking artifacts in video scene coding with discrete cosine transformation (DCT) at a low data rate |
FR2661063B1 (fr) * | 1990-04-13 | 1992-06-19 | Thomson Csf | Procede et dispositif de post-filtrage pour codage d'images par transformation cosinus discrete. |
US5454051A (en) * | 1991-08-05 | 1995-09-26 | Eastman Kodak Company | Method of reducing block artifacts created by block transform compression algorithms |
KR0148130B1 (ko) * | 1992-05-18 | 1998-09-15 | 강진구 | 블럭킹아티팩트를 억제시키는 부호화/복호화 방법 및 그 장치 |
KR100229783B1 (ko) * | 1994-07-29 | 1999-11-15 | 전주범 | 디지탈 전송 화상의 적응적후 처리장치 |
-
1995
- 1995-04-29 KR KR1019950010440A patent/KR960039992A/ko not_active Application Discontinuation
-
1996
- 1996-04-25 CA CA002219746A patent/CA2219746A1/en not_active Abandoned
- 1996-04-25 RU RU97119861/09A patent/RU2154917C2/ru active
- 1996-04-25 JP JP8533186A patent/JPH11504482A/ja active Pending
- 1996-04-25 PL PL96322974A patent/PL180169B1/pl unknown
- 1996-04-25 MX MX9708188A patent/MX9708188A/es unknown
- 1996-04-25 EP EP96912311A patent/EP0886972B1/en not_active Expired - Lifetime
- 1996-04-25 WO PCT/KR1996/000055 patent/WO1996035295A1/en active IP Right Grant
- 1996-04-25 DE DE69619707T patent/DE69619707T2/de not_active Expired - Lifetime
- 1996-04-25 CN CNB961935499A patent/CN1139255C/zh not_active Expired - Lifetime
- 1996-04-29 US US08/639,418 patent/US5734757A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5734757A (en) | 1998-03-31 |
WO1996035295A1 (en) | 1996-11-07 |
CA2219746A1 (en) | 1996-11-07 |
EP0886972B1 (en) | 2002-03-06 |
DE69619707D1 (de) | 2002-04-11 |
RU2154917C2 (ru) | 2000-08-20 |
DE69619707T2 (de) | 2002-08-08 |
JPH11504482A (ja) | 1999-04-20 |
CN1183199A (zh) | 1998-05-27 |
PL180169B1 (pl) | 2000-12-29 |
CN1139255C (zh) | 2004-02-18 |
PL322974A1 (en) | 1998-03-02 |
EP0886972A1 (en) | 1998-12-30 |
KR960039992A (ko) | 1996-11-25 |
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