DE69717780D1 - Korrektur von ringförmigen bildartefakten - Google Patents
Korrektur von ringförmigen bildartefaktenInfo
- Publication number
- DE69717780D1 DE69717780D1 DE69717780T DE69717780T DE69717780D1 DE 69717780 D1 DE69717780 D1 DE 69717780D1 DE 69717780 T DE69717780 T DE 69717780T DE 69717780 T DE69717780 T DE 69717780T DE 69717780 D1 DE69717780 D1 DE 69717780D1
- Authority
- DE
- Germany
- Prior art keywords
- brightness values
- image
- correction
- ring
- shaped image
- 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.)
- Expired - Lifetime
Links
- 238000002591 computed tomography Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S378/00—X-ray or gamma ray systems or devices
- Y10S378/901—Computer tomography program or processor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96202151 | 1996-07-30 | ||
PCT/IB1997/000834 WO1998005003A1 (en) | 1996-07-30 | 1997-07-04 | Correction for ring-like image artefacts |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69717780D1 true DE69717780D1 (de) | 2003-01-23 |
DE69717780T2 DE69717780T2 (de) | 2003-07-17 |
Family
ID=8224245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69717780T Expired - Lifetime DE69717780T2 (de) | 1996-07-30 | 1997-07-04 | Korrektur von ringförmigen bildartefakten |
Country Status (5)
Country | Link |
---|---|
US (1) | US5825841A (de) |
EP (1) | EP0857337B1 (de) |
JP (1) | JP4430743B2 (de) |
DE (1) | DE69717780T2 (de) |
WO (1) | WO1998005003A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3700804B2 (ja) * | 1996-12-13 | 2005-09-28 | 富士写真フイルム株式会社 | 画像処理方法および装置 |
GB2349731B (en) | 1998-01-28 | 2003-06-04 | Ht Medical Systems Inc | Interface device and method for interfacing instruments to vascular access simulation systems |
EP1046134B1 (de) * | 1998-10-19 | 2003-12-03 | Koninklijke Philips Electronics N.V. | Röntgenuntersuchungsvorrichtung mit regelung der strahlendosis |
JP2001095793A (ja) * | 1999-10-04 | 2001-04-10 | Hitachi Medical Corp | X線ct装置 |
DE10106907C2 (de) * | 2001-02-13 | 2003-06-26 | Siemens Ag | Röntgendiagnostikeinrichtung mit Mitteln und Verfahren zur Korrektur von Kometenartefakten |
US6850589B2 (en) * | 2002-03-27 | 2005-02-01 | Agilent Technologies, Inc. | Tomography of curved surfaces |
DE10320233B4 (de) * | 2003-05-07 | 2012-11-08 | "Stiftung Caesar" (Center Of Advanced European Studies And Research) | Verfahren zur Reduzierung von durch Artefakte hervorgerufene Störungen |
US7860341B2 (en) * | 2006-07-21 | 2010-12-28 | Varian Medical Systems, Inc. | System and method for correcting for ring artifacts in an image |
JP5023281B2 (ja) | 2008-01-11 | 2012-09-12 | 株式会社島津製作所 | 画像処理方法、その装置並びに断層撮影装置 |
US8260017B2 (en) * | 2009-02-19 | 2012-09-04 | Kabushiki Kaisha Toshiba | Rotation center identifying method and apparatus, ring artifact correction method, and X-ray diagnostic apparatus employing the same |
DE102012205769A1 (de) | 2012-04-10 | 2013-10-10 | Siemens Aktiengesellschaft | Quantifizierung von Ringartefakten |
KR101462402B1 (ko) * | 2014-03-25 | 2014-11-17 | 연세대학교 산학협력단 | 심혈관oct영상생성방법 및 이를 이용한 스텐트 검출방법 |
DE102018201249A1 (de) | 2018-01-26 | 2019-08-01 | Carl Zeiss Industrielle Messtechnik Gmbh | Verfahren und Anordnung zur Detektorkorrektur für das Erzeugen von Objekt-Durchstrahlungsbildern |
WO2021045019A1 (ja) * | 2019-09-04 | 2021-03-11 | 株式会社ニデック | 眼科画像処理プログラムおよび眼科画像処理装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3107170A1 (de) * | 1981-02-26 | 1982-09-09 | Philips Patentverwaltung Gmbh, 2000 Hamburg | "vorrichtung zur verminderung von ringartefakten in ct-bildern" |
US4670840A (en) * | 1983-03-09 | 1987-06-02 | Elscint, Inc. | Ring artifact correction for computerized tomography |
US5229934A (en) * | 1990-06-18 | 1993-07-20 | Picker International, Inc. | Post-processing technique for cleaning up streaks and artifacts in diagnostic images |
US5533081A (en) * | 1995-01-17 | 1996-07-02 | General Electric Company | Guided ringfix algorithm for image reconstruction |
-
1997
- 1997-07-04 JP JP50864298A patent/JP4430743B2/ja not_active Expired - Lifetime
- 1997-07-04 WO PCT/IB1997/000834 patent/WO1998005003A1/en active IP Right Grant
- 1997-07-04 DE DE69717780T patent/DE69717780T2/de not_active Expired - Lifetime
- 1997-07-04 EP EP97927324A patent/EP0857337B1/de not_active Expired - Lifetime
- 1997-07-16 US US08/895,252 patent/US5825841A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0857337A1 (de) | 1998-08-12 |
DE69717780T2 (de) | 2003-07-17 |
US5825841A (en) | 1998-10-20 |
JP4430743B2 (ja) | 2010-03-10 |
WO1998005003A1 (en) | 1998-02-05 |
EP0857337B1 (de) | 2002-12-11 |
JPH11514121A (ja) | 1999-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69717780D1 (de) | Korrektur von ringförmigen bildartefakten | |
EP0392701A3 (de) | Bildverkleinerungsgerät | |
CA2191631A1 (en) | Method and System for Processing Two Analog Composite Video Signals | |
JPS5689751A (en) | Copying machine of automatically controlling picture quality | |
BR9810695A (pt) | Dispositivo e processo de processamento de sinais | |
DE68916661D1 (de) | Bildschärfeverbesserungsverfahren und -prozessor für Bildreproduktion mit Abtaster. | |
AU549681B2 (en) | Scanner image signal contrast intensification | |
EP0549180A3 (en) | Segmented detector for computer tomography scanner | |
AU2268492A (en) | Method and apparatus for computing tomographic scans | |
CA2221160A1 (en) | Automated infusion system with dose rate calculator | |
DK134090A (da) | Detektor for kogetilstande | |
SE0003205D0 (sv) | Sätt att identifiera alveolärt nervområde i käkbild | |
EP0369778A3 (de) | Bildaufzeichnungsgerät | |
SE9602594D0 (sv) | Förfarande och anordning vid datortomografi | |
SE9201182D0 (sv) | A method for detecting errors exceeding a specific contrast in digital video signals | |
ATE29192T1 (de) | Bildverarbeitungseinrichtung. | |
Amarenco | Gerard Amarenco, MD | |
FR2677871B1 (fr) | Appareil de detection et de correction des anomalies d'equilibre d'un patient . | |
MX9305148A (es) | Metodo y aparato para programar la impresion o reproduccion de imagenes. | |
ATE173550T1 (de) | Methode und vorrichtung zum verarbeiten von ekg- signalen | |
DE69018233D1 (de) | Bildverarbeitungssystem zur Wiedergabe von mit Kleinbildern überlagerten Grossbildern. | |
JPS53105230A (en) | Optimum maintaining method of electrophotographical duplication images | |
JPS5373049A (en) | Information processing unit | |
JPS6475986A (en) | Correcting apparatus for sensitivity for gamma camera | |
JPS53114376A (en) | Computer tomographic diagnostic equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |