WO2002003335A1 - Dispositif de camera ccd photosensible - Google Patents

Dispositif de camera ccd photosensible Download PDF

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Publication number
WO2002003335A1
WO2002003335A1 PCT/EP2001/006924 EP0106924W WO0203335A1 WO 2002003335 A1 WO2002003335 A1 WO 2002003335A1 EP 0106924 W EP0106924 W EP 0106924W WO 0203335 A1 WO0203335 A1 WO 0203335A1
Authority
WO
WIPO (PCT)
Prior art keywords
camera
eye
light source
image
ccd camera
Prior art date
Application number
PCT/EP2001/006924
Other languages
German (de)
English (en)
Inventor
Thomas Kohn
Thomas Hechfellner
Original Assignee
Towitoko Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10036206A external-priority patent/DE10036206A1/de
Application filed by Towitoko Ag filed Critical Towitoko Ag
Priority to AU2001281855A priority Critical patent/AU2001281855A1/en
Publication of WO2002003335A1 publication Critical patent/WO2002003335A1/fr

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/30—Individual registration on entry or exit not involving the use of a pass
    • G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
    • G07C9/37—Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition

Definitions

  • the invention relates to a photosensitive CCD camera arrangement, comprising a camera housing, a lens device, a signal preprocessing circuit and an interface for data transmission to a computer system, in particular for forwarding the image data via a communication network according to the preamble of claim 1.
  • Solid state cameras with integrated optics for data, especially image transmission have been state of the art for many years and are used, for example, as so-called
  • Web cameras for the Internet in order to be able to transmit compressed images if necessary or to be able to carry out video conferences with the appropriate data transfer rate.
  • Such cameras include solid state sensors, e.g. CCD lines or matrices on which the image to be recorded can be converted with the help of an appropriate lens.
  • the incident light quanta generate charge carriers that are read out by means of suitable control and signal preprocessing electronics.
  • a retinal display is known from US Pat. No. 5,982,555, radiation being coupled into the eye of a viewer with the aid of a light source. With the help of a beam splitter and a mirror arrangement, it is possible to detect the fundus in order to guide it to a photodetector. The images of the fundus of the eye captured by the photodetector are compared with the data of an image memory in order to enable, for example, access control based on user identification.
  • DE 38 21 977 in turn discloses a device for generating an image of an object, in particular for observing the eye with an illumination source, the light of which can be focused on the object section to be observed.
  • a scanning device which generates a scanning movement of the light beam of the illumination source over the section to be observed and which has beam-deflecting and imaging optical elements.
  • a detector device receives the light reflected at the section to be observed.
  • an evaluation and synchronization unit is provided, which generates an image of the selected object structures from the time-sequential output signal of the detector device.
  • at least two further imaging optical elements are provided in the beam path between the beam-deflecting elements.
  • DE 44 19 395 AI shows a method and a device for the analysis and processing of color images, an evaluation of an image scene to be recognized being carried out there, which is scanned point by point and line by line and examined in real time by means of an image processing system.
  • the colored objects of the image scene are recorded on the basis of learned color classes and evaluated according to their number, shape and position and / or analyzed with regard to their color values.
  • an eye camera belongs to the prior art, which detects the movement of a user's eye in order to then perform certain functions, e.g. trigger a data transfer.
  • the basic idea of the invention is accordingly to start from a combined camera arrangement, which is able to capture scenes in the usual way with a normal wide-angle or telephoto lens, but to make them available to a personal computer or a data network also for
  • Detection of identification features, in particular of the eye and / or fundus, is suitable, so that a connected computer system can be released or activated after a positive test.
  • a standard CCD camera arrangement should therefore also be usable as an eye recognition or eye identification unit due to the smallest possible design changes, for example to to provide an easy way of access authorization control at computer workstations, which is also a
  • a light source which directs radiation onto the eye and / or the fundus of the eye, in particular the retina, which can be focused via the objective device.
  • the light source can be integrated into the camera or arranged externally.
  • An image of the eye and / or fundus of the eye or of the retina is then fed or captured to the photosensitive CCD line or matrix of the camera, the image being compared with a pattern located in a memory in order to carry out an identification check in a manner known per se ,
  • a memory area of the personal computer can be used for storing pattern images, to which the camera arrangement is connected via a suitable interface.
  • the camera has an electronic release device so that the connected computer system can in turn be activated via the camera interface after a positive identification check.
  • the light source is then switched off and switched to standard camera operation.
  • the light source can be created from light-emitting diodes for effective illumination, in particular of the fundus, as a ring or point light and is connected to an ophthalmoscopic concave mirror in one embodiment of the invention.
  • the light source and concave mirror can then be moved or pivoted in front of the camera lens, so that the fundus or the eye can be imaged by a person located in front of the concave side of the mirror and can be displayed via the camera arrangement.
  • a tube-like camera attachment device which has a magnifying lens and which has an outer circumferential side of the lens area trained fiber optic light source cooperates.
  • This camera attachment device can then be brought in front of the lens and plugged in there or fastened or fixed in some other way, so that the eye can be recorded for a subsequent identification check.
  • the fiber optic of the camera attachment device or a ring light fiber optic can be designed as a coaxial incident light lighting device with respect to the part of the tube facing the eye or a corresponding receiving assembly.
  • the camera is additionally provided with a switchable autofocus device or that such an existing device is used to activate the light source when approaching to a certain extent, so that the eye or the fundus is then correspondingly sharply imaged without the need for manual focus adjustment.
  • the figure shows a basic illustration of a photosensitive CCD camera arrangement with a concave mirror ring light configuration for detecting the fundus
  • the photosensitive CCD camera arrangement is a modified webcam 1, which is mounted on a desktop computer monitor 2 and which is connected to a PC in the usual way by means of a suitable interface.
  • the webcam 1 is used to record and transmit image data, e.g. of the PC user to conduct a video conference.
  • an additional unit 3 is mounted in front of the lens 2 of the webcam 1.
  • This additional unit can be pivoted in front of the webcam 1 or can also be connected to the lens 2 via a standard thread.
  • the additional unit 3 has a lens 4 and a ring light 6, which is arranged concentrically around a tube 5 and has a plurality of light-emitting diodes 7.
  • An ophthalmic concave mirror 8 is also arranged within the additional unit 3.
  • a visual check can be carried out on the monitor 2 or the identification verification process can also be initiated immediately.
  • the internal or software-implemented electronic release device then releases the connected computer system via the camera interface, deactivates the light source and switches the camera to standard operation.
  • the additional unit 3 can be structurally connected to the webcam 1, but can also be designed as a retrofit part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Eye Examination Apparatus (AREA)
  • Studio Devices (AREA)

Abstract

L'invention concerne un dispositif de caméra CCD photosensible composé d'un boîtier de caméra, d'une unité objectif, d'un circuit de pré-traitement de données, ainsi que d'une interface destinée à la transmission de données vers un système informatique, en particulier au réacheminement des données d'image par l'intermédiaire d'un réseau de communication. Selon l'invention, une source de lumière permet d'orienter un rayonnement pouvant être focalisé au moyen de l'unité objectif sur l'oeil et/ou sur l'arrière plan de l'oeil d'un utilisateur. La ligne CCD ou la matrice CCD photosensible de la caméra relève ensuite une image de l'oeil et/ou de l'arrière plan de l'oeil ou de la rétine, cette image étant ensuite comparée à un modèle enregistré dans une mémoire afin de réaliser un contrôle d'identification. Après identification positive, un dispositif de libération automatique active par l'intermédiaire de l'interface le système informatique raccordé, déconnecte la source de lumière, et met la caméra en mode standard.
PCT/EP2001/006924 2000-07-05 2001-06-19 Dispositif de camera ccd photosensible WO2002003335A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001281855A AU2001281855A1 (en) 2000-07-05 2001-06-19 Photosensitive ccd camera device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10032760.5 2000-07-05
DE10032760 2000-07-05
DE10036206A DE10036206A1 (de) 2000-07-05 2000-07-25 Photosensitive CCD-Kameraanordnung
DE10036206.0 2000-07-25

Publications (1)

Publication Number Publication Date
WO2002003335A1 true WO2002003335A1 (fr) 2002-01-10

Family

ID=26006301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006924 WO2002003335A1 (fr) 2000-07-05 2001-06-19 Dispositif de camera ccd photosensible

Country Status (2)

Country Link
AU (1) AU2001281855A1 (fr)
WO (1) WO2002003335A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821977A1 (de) 1988-06-29 1990-01-11 Rodenstock Instr Vorrichtung zur erzeugung eines bildes eines objekts (ii)
DE4419395A1 (de) 1994-05-30 1995-12-14 Graphikon Gmbh Verfahren und Einrichtung zur Analyse und Verarbeitung von Farbbildern
EP0863491A1 (fr) * 1997-03-03 1998-09-09 BRITISH TELECOMMUNICATIONS public limited company Dispositif de contrÔle de sécurité
US5982555A (en) 1998-01-20 1999-11-09 University Of Washington Virtual retinal display with eye tracking
WO2000031679A1 (fr) * 1998-11-25 2000-06-02 Iriscan, Inc. Module et procede de securite telephonique a imagerie irienne
WO2001006786A1 (fr) * 1999-07-15 2001-01-25 Fotonation, Inc. Appareil photo numerique dote d'un dispositif de securite biometrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821977A1 (de) 1988-06-29 1990-01-11 Rodenstock Instr Vorrichtung zur erzeugung eines bildes eines objekts (ii)
DE4419395A1 (de) 1994-05-30 1995-12-14 Graphikon Gmbh Verfahren und Einrichtung zur Analyse und Verarbeitung von Farbbildern
EP0863491A1 (fr) * 1997-03-03 1998-09-09 BRITISH TELECOMMUNICATIONS public limited company Dispositif de contrÔle de sécurité
US5982555A (en) 1998-01-20 1999-11-09 University Of Washington Virtual retinal display with eye tracking
WO2000031679A1 (fr) * 1998-11-25 2000-06-02 Iriscan, Inc. Module et procede de securite telephonique a imagerie irienne
WO2001006786A1 (fr) * 1999-07-15 2001-01-25 Fotonation, Inc. Appareil photo numerique dote d'un dispositif de securite biometrique

Also Published As

Publication number Publication date
AU2001281855A1 (en) 2002-01-14

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