FR2468947A1 - Systeme de correlation optique en temps reel - Google Patents
Systeme de correlation optique en temps reelInfo
- Publication number
- FR2468947A1 FR2468947A1 FR7927218A FR7927218A FR2468947A1 FR 2468947 A1 FR2468947 A1 FR 2468947A1 FR 7927218 A FR7927218 A FR 7927218A FR 7927218 A FR7927218 A FR 7927218A FR 2468947 A1 FR2468947 A1 FR 2468947A1
- Authority
- FR
- France
- Prior art keywords
- correlation system
- correlation
- real
- slide
- time optical
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06E—OPTICAL COMPUTING DEVICES; COMPUTING DEVICES USING OTHER RADIATIONS WITH SIMILAR PROPERTIES
- G06E3/00—Devices not provided for in group G06E1/00, e.g. for processing analogue or hybrid data
- G06E3/001—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements
- G06E3/005—Analogue devices in which mathematical operations are carried out with the aid of optical or electro-optical elements using electro-optical or opto-electronic means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Holo Graphy (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
L'invention concerne un système de corrélation fournissant la fonction de corrélation de deux objets A et B éclairés en lumière cohérente, en utilisant le principe de la double diffraction. Le système de corrélation selon l'invention se caractérise essentiellement en ce qu'il utilise comme milieu d'enregistrement une lame 10 de matériau recyclable, c'est-à-dire inscriptible et effacable à volonté, tel que l'oxyde de bismuth-silicium. L'enregistrement réalisé dans la lame par la superposition des faisceaux d'éclairement des objets est lu par un faisceau FL subissant un balayage angulaire permettant d'optimiser le rendement de diffraction pour tous les pics de corrélation dans un plan d'observation. Application à la reconnaissance de formes, à la poursuite de cibles...
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7927218A FR2468947A1 (fr) | 1979-11-05 | 1979-11-05 | Systeme de correlation optique en temps reel |
EP80401397A EP0028548A1 (fr) | 1979-11-05 | 1980-10-02 | Système de correlation optique en temps réel |
US06/204,050 US4383734A (en) | 1979-11-05 | 1980-11-04 | Real-time optical correlation system |
JP15475080A JPS5675618A (en) | 1979-11-05 | 1980-11-05 | Realltime optical correlation system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7927218A FR2468947A1 (fr) | 1979-11-05 | 1979-11-05 | Systeme de correlation optique en temps reel |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2468947A1 true FR2468947A1 (fr) | 1981-05-08 |
Family
ID=9231296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7927218A Withdrawn FR2468947A1 (fr) | 1979-11-05 | 1979-11-05 | Systeme de correlation optique en temps reel |
Country Status (4)
Country | Link |
---|---|
US (1) | US4383734A (fr) |
EP (1) | EP0028548A1 (fr) |
JP (1) | JPS5675618A (fr) |
FR (1) | FR2468947A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4514038A (en) * | 1981-02-06 | 1985-04-30 | Thomson-Csf | Optical Fourier transformer device and optical correlator incorporating the said device |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2518766A1 (fr) * | 1981-12-18 | 1983-06-24 | Thomson Csf | Dispositif de commutation de faisceaux optiques et central telephonique comprenant un tel dispositif |
US4539651A (en) * | 1983-02-09 | 1985-09-03 | Ludman Jacques E | Optical correlator |
US5078501A (en) * | 1986-10-17 | 1992-01-07 | E. I. Du Pont De Nemours And Company | Method and apparatus for optically evaluating the conformance of unknown objects to predetermined characteristics |
US5159474A (en) * | 1986-10-17 | 1992-10-27 | E. I. Du Pont De Nemours And Company | Transform optical processing system |
US4903314A (en) * | 1988-05-31 | 1990-02-20 | Grumman Aerospace Corporation | Single plate compact optical correlator |
JPH0830830B2 (ja) * | 1988-09-07 | 1996-03-27 | セイコー電子工業株式会社 | 光学的相関処理装置 |
IT1232051B (it) * | 1989-03-24 | 1992-01-23 | Cselt Centro Studi Lab Telecom | Dispositivo per la correlazione fra fasci ottici |
GB2230125A (en) * | 1989-04-06 | 1990-10-10 | British Aerospace | Pattern recognition apparatus |
US5107351A (en) * | 1990-02-16 | 1992-04-21 | Grumman Aerospace Corporation | Image enhanced optical correlator system |
US5029220A (en) * | 1990-07-31 | 1991-07-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Optical joint correlator for real-time image tracking and retinal surgery |
US5276636A (en) * | 1992-09-14 | 1994-01-04 | Cohn Robert W | Method and apparatus for adaptive real-time optical correlation using phase-only spatial light modulators and interferometric detection |
IL110771A (en) * | 1994-08-25 | 1998-02-08 | Holon Holon Hanni | A priori and adaptive filtering for detection of signals corrupted by noise |
JP2000502444A (ja) * | 1995-12-15 | 2000-02-29 | フラウンホフェル―ゲゼルシャフト ツール フェルデルング デル アンゲヴァンテン フォルシュング エー ファウ | レンズ・アパーチャープレート系の結像において間隔を高解像度で決定する方法と装置 |
US5900620A (en) * | 1997-08-27 | 1999-05-04 | Trw Inc. | Magic mirror hot spot tracker |
FR2755516B1 (fr) | 1996-11-05 | 1999-01-22 | Thomson Csf | Dispositif compact d'illumination |
FR2819061B1 (fr) * | 2000-12-28 | 2003-04-11 | Thomson Csf | Dispositif de controle de polarisation dans une liaison optique |
FR2860291B1 (fr) * | 2003-09-26 | 2005-11-18 | Thales Sa | Dispositif capteur de vitesse de rotation interferometrique a fibre optique |
US10337851B2 (en) * | 2015-04-02 | 2019-07-02 | Ramot At Tel-Aviv University Ltd. | Fast phase processing of off-axis interferograms |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2362466A1 (fr) * | 1976-08-19 | 1978-03-17 | Thomson Csf | Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519992A (en) * | 1966-08-10 | 1970-07-07 | North American Rockwell | Photointerpretation system |
US3544197A (en) * | 1967-03-23 | 1970-12-01 | Research Corp | Optical crosscorrelation |
US3761154A (en) * | 1971-12-27 | 1973-09-25 | Bendix Corp | Display device generating many superimposed output signals to provide an image |
US3812496A (en) * | 1972-08-22 | 1974-05-21 | Trw Inc | Optical signal recording system |
US4174179A (en) * | 1977-08-24 | 1979-11-13 | Guy Indebetouw | Continuous feed holographic correlator for randomly oriented workpieces |
-
1979
- 1979-11-05 FR FR7927218A patent/FR2468947A1/fr not_active Withdrawn
-
1980
- 1980-10-02 EP EP80401397A patent/EP0028548A1/fr not_active Ceased
- 1980-11-04 US US06/204,050 patent/US4383734A/en not_active Expired - Lifetime
- 1980-11-05 JP JP15475080A patent/JPS5675618A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2362466A1 (fr) * | 1976-08-19 | 1978-03-17 | Thomson Csf | Cellule d'enregistrement holographique, memoire et dispositif de calcul optique utilisant une telle cellule |
Non-Patent Citations (3)
Title |
---|
EXBK/70 * |
EXBK/75 * |
EXBK/79 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4514038A (en) * | 1981-02-06 | 1985-04-30 | Thomson-Csf | Optical Fourier transformer device and optical correlator incorporating the said device |
Also Published As
Publication number | Publication date |
---|---|
JPS5675618A (en) | 1981-06-22 |
US4383734A (en) | 1983-05-17 |
EP0028548A1 (fr) | 1981-05-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licences | ||
ST | Notification of lapse |