DE3763485D1 - Digitales bildsystem mit graustufensteuerung, besonders zur sichtbarmachung von blutvenen. - Google Patents
Digitales bildsystem mit graustufensteuerung, besonders zur sichtbarmachung von blutvenen.Info
- Publication number
- DE3763485D1 DE3763485D1 DE8787400403T DE3763485T DE3763485D1 DE 3763485 D1 DE3763485 D1 DE 3763485D1 DE 8787400403 T DE8787400403 T DE 8787400403T DE 3763485 T DE3763485 T DE 3763485T DE 3763485 D1 DE3763485 D1 DE 3763485D1
- Authority
- DE
- Germany
- Prior art keywords
- visibility
- digital image
- gray level
- level control
- image system
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
- H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8602878A FR2595153B1 (fr) | 1986-02-28 | 1986-02-28 | Systeme d'imagerie numerique a reglage de l'echelle des gris, notamment pour la visualisation des vaisseaux sanguins |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3763485D1 true DE3763485D1 (de) | 1990-08-09 |
Family
ID=9332664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787400403T Expired - Fee Related DE3763485D1 (de) | 1986-02-28 | 1987-02-24 | Digitales bildsystem mit graustufensteuerung, besonders zur sichtbarmachung von blutvenen. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4827492A (de) |
EP (1) | EP0235042B1 (de) |
DE (1) | DE3763485D1 (de) |
FR (1) | FR2595153B1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63125241A (ja) * | 1986-11-14 | 1988-05-28 | 株式会社東芝 | 画像処理装置 |
US4937682A (en) * | 1988-12-28 | 1990-06-26 | Hewlett-Packard Company | Method and apparatus for providing contrast/intensity control in a document scanner |
US5253281A (en) * | 1991-07-30 | 1993-10-12 | Siemens Aktiengesellschaft | X-ray diagnostics installation for subtraction angiography |
DE4129656C2 (de) * | 1991-09-06 | 1994-02-10 | Siemens Ag | Wiedergabevorrichtung für Videosignale auf einem Monitor |
JP3016652B2 (ja) * | 1992-02-07 | 2000-03-06 | 松下電器産業株式会社 | ゲインコントロール回路 |
US6035013A (en) * | 1994-06-01 | 2000-03-07 | Simage O.Y. | Radiographic imaging devices, systems and methods |
GB2289983B (en) * | 1994-06-01 | 1996-10-16 | Simage Oy | Imaging devices,systems and methods |
US5908387A (en) * | 1996-06-21 | 1999-06-01 | Quinton Instrument Company | Device and method for improved quantitative coronary artery analysis |
DE10238322A1 (de) * | 2002-08-21 | 2004-03-11 | Siemens Ag | Retrospektive bzw. fenstergesteuerte Filterung von Bildern zur Adaption von Schärfe und Rauschen in der Computer-Tomographie |
DE102005047539A1 (de) * | 2005-09-30 | 2007-04-05 | Siemens Ag | Bildverarbeitungsverfahren zur Fensterung und/oder Dosisregelung für medizinische Diagnostikeinrichtungen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4204225A (en) * | 1978-05-16 | 1980-05-20 | Wisconsin Alumni Research Foundation | Real-time digital X-ray subtraction imaging |
US4231065A (en) * | 1979-01-11 | 1980-10-28 | Honeywell Inc. | Local area contrast enhancement device |
GB2129635B (en) * | 1979-09-21 | 1984-12-19 | Emi Ltd | Controlling the grey levels represented by a video signal |
US4438495A (en) * | 1981-11-13 | 1984-03-20 | General Electric Company | Tomography window-level gamma functions |
IL69326A (en) * | 1983-07-26 | 1986-11-30 | Elscint Ltd | System and methods for translating radiation intensity into pixel values |
JPS6075033A (ja) * | 1983-09-30 | 1985-04-27 | 株式会社東芝 | X線診断装置 |
IL70214A (en) * | 1983-11-13 | 1987-10-20 | Elscint Ltd | Image contrast enhancement arrangement |
-
1986
- 1986-02-28 FR FR8602878A patent/FR2595153B1/fr not_active Expired - Fee Related
-
1987
- 1987-02-24 EP EP87400403A patent/EP0235042B1/de not_active Expired - Lifetime
- 1987-02-24 DE DE8787400403T patent/DE3763485D1/de not_active Expired - Fee Related
- 1987-02-25 US US07/018,440 patent/US4827492A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2595153A1 (fr) | 1987-09-04 |
EP0235042B1 (de) | 1990-07-04 |
FR2595153B1 (fr) | 1990-12-07 |
US4827492A (en) | 1989-05-02 |
EP0235042A1 (de) | 1987-09-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |