EP0256915B1 - System zur Einstellung der relativen Winkelstellung zweier Videokameras, die auf das gleiche Objekt ausgerichtet sind, und Anwendung zur Ausrichtungssteuerung der beiden Apparate - Google Patents

System zur Einstellung der relativen Winkelstellung zweier Videokameras, die auf das gleiche Objekt ausgerichtet sind, und Anwendung zur Ausrichtungssteuerung der beiden Apparate Download PDF

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Publication number
EP0256915B1
EP0256915B1 EP87401743A EP87401743A EP0256915B1 EP 0256915 B1 EP0256915 B1 EP 0256915B1 EP 87401743 A EP87401743 A EP 87401743A EP 87401743 A EP87401743 A EP 87401743A EP 0256915 B1 EP0256915 B1 EP 0256915B1
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EP
European Patent Office
Prior art keywords
cameras
images
axes
video
axis
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
Application number
EP87401743A
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English (en)
French (fr)
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EP0256915A1 (de
Inventor
Emmanuel Giacometti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Group SAS
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Airbus Group SAS
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Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0256915A1 publication Critical patent/EP0256915A1/de
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Publication of EP0256915B1 publication Critical patent/EP0256915B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/32—Devices for testing or checking
    • F41G3/326—Devices for testing or checking for checking the angle between the axis of the gun sighting device and an auxiliary measuring device

Definitions

  • the present invention relates to a system for adjusting the relative angular positions of two video cameras aimed at the same object and its application to adjusting the orientation of two devices. More particularly, it makes it possible to adjust the axes of shooting of two video cameras in the direction of the same object, as well as to adjust the axes of said devices towards the latter.
  • the object of the present invention is to improve such a system to allow the relative angular positions of the two cameras to be adjusted, in a simple and inexpensive manner, requiring no complex electronic or computer device.
  • the system of the type described above is characterized in that said image switching device is controlled by a monostable flip-flop, the input of which receives, from said synchronization means, the sequence of the synchronization pulses of the video images, so that, for the synchronization pulses of even rank, said switching device addresses to said means for viewing images from one of said cameras, while for synchronization pulses of odd rank, said switching device sends to said display means images from the other of said cameras and in that, to adjust the relative angular positions of said cameras, means for modifying the orientation are actuated so as to allow said images coming from said cameras to be superimposed on the display means.
  • the two cameras occupy the same angular positions around their shooting axes and, on the other hand, the axes of said cameras are strictly parallel, if the object in question is located to infinity, or converge at the location of said object, if it is at a finite distance.
  • At least one of said cameras is mounted in an orientable manner relative to a support.
  • the two cameras can be mounted in an orientable manner relative to their respective support, it is advantageous, for the sake of simplicity of operation in order to obtain the superimposition of the images on said screen and therefore the desired adjustment of the axes of the cameras, that one of said cameras is rigidly mounted on a support oriented towards said object, so that the orientation of this camera around its shooting axis and this shooting axis view respectively serve as corresponding references for the other camera.
  • the system according to the invention can be used in numerous fields of application, in particular in order to adjust the axes of two devices relative to each other, as well as the orientations of these around said axes, these apparatuses which can be for example a sight and a weapon, deported with respect to said sight.
  • the system is characterized in that the first video camera is rigidly linked to a first camera so that its axis of shooting is at least substantially coincident with the axis of said first camera and in that the second video camera is rigidly linked to a second device so that its shooting axis is at least substantially coincident with the axis of said second device.
  • At least one of said devices is mounted in an orientable manner relative to a support, so that the camera-camera assembly can be oriented in one block.
  • said means sending the images of the two cameras to the display means may include the features described above.
  • the video cameras can be of any known type, such as that for conventional television cameras and thermal cameras with infrared detectors or else cameras with charge coupled detectors (CCD cameras). It is advantageous for one of said cameras to be provided, as is the case from time to time, with a synchronization device enabling it to synchronize a slave camera.
  • CCD cameras charge coupled detectors
  • Figure 1 is a schematic view, partially in perspective, of the system for adjusting the relative angular positions of two video cameras, according to the invention.
  • Figure 2 shows time diagrams a , b and c illustrating the operation of the system of Figure 1.
  • Figures 3a and 3b illustrate the images appearing on the display screen of the system in Figure 1.
  • FIG. 4 represents an application of the system of FIG. 1.
  • the purpose of the system according to the invention and shown in FIG. 1 is to adjust, relative to one another, the relative angular positions, and in particular the shooting axes 1 and 2, of two video cameras, 3 and 4 respectively.
  • the cameras 3 and 4 are directed at least substantially towards the same object (or set of objects) 5, for example a tree of a landscape, so that said axes 1 and 2 are parallel to each other if said object 5 is very far away or else contributes to the location of said object if the latter is at a finite distance from the two cameras 3 and 4.
  • links 6 and 7 respectively, the two cameras 3 and 4 are controlled in rigorous synchronism by an electronic control device 8.
  • this electronic control device 8 addresses the cameras 3 and 4, by said links 6 and 7, the same image synchronization pulses 9 (see diagram a in FIG. 2).
  • the video signals generated by said cameras 3 and 4 appear at the respective outputs 10 and 11 thereof. These outputs 10 and 11 are connected to two inputs 12 and 13 of a switching device 14, with a single output 15.
  • a monostable flip-flop 16 receiving at its input the image synchronization pulses (FIG. 2 a ) generated by the electronic control device 8.
  • the output of the monostable flip-flop 16 controls the switching of switching device 14, so that, alternatively, the output 15 is connected with the input 12 and with the input 13.
  • the connection is established between input 12 and output 15.
  • the connection is established between l input 13 and output 15.
  • the signal at the output 15 of the switching device 14 consists of two sequences of interlaced images, coming respectively from the cameras 3 and 4, the images of each sequence following one another at half the frequency (that of the pulses 9i or 9p) that of the image synchronization signals 9.
  • a system of reference axes respectively X3, Y3, Z3, and X4, Y4, Z4, has been associated with each of the cameras 3 and 4.
  • axes X3 and X4 are respectively merged with axes 1 and 2 and the axes of the two axis systems correspond in pairs.
  • the position of the camera 3 is considered to give the reference position, it is only necessary that the camera 4 can be movable relative to its support (not shown) around the axes, X4, Y4 and Z4.
  • the articulation of the camera 4 (and possibly that of the camera 3) with respect to said support can be of any known type and is therefore not shown.
  • FIG 4 there is shown an example of application of the system of Figure 1, to the adjustment of a weapon 20 having a line of fire 19, this weapon 20 being offset laterally relative to a sight 21, whose line Aiming sight bears the reference 22.
  • a weapon system configuration is commonly found on board aircraft, in particular helicopters, in which the sight 21 is located opposite the pilot or co-pilot, represented in the figure by the eye 23, while the weapon 20 is offset laterally.
  • the finite or infinite distance separating the object 5 from the cameras 3 and 4 is chosen according to the characteristics of the weapon 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Studio Devices (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (2)

  1. System mit:
    - zwei Videokameras (3,4), von denen mindestens die eine Mittel zur Veränderung der Ausrichtung ihrer Achse (1, 2) umfaßt und die beide auf dasselbe Objekt (5) gerichtet werden;
    - Mitteln (8) zur Funktionssynchronisation, welche mit den genannten Videokameras (3, 4) verbunden sind und eine Impulsfolge zur Synchronisation der Videobilder liefern;
    - Mitteln (17), welche dazu geeignet sind, die von den genannten Videokameras gelieferten Videosignale als Bild wiederzugeben, wobei diese Bildwiedergabemittel den genannten Videokameras gemeinsam sind; und
    - Umschaltmitteln (14), welche die Ausgänge der genannten Videokameras abwechselnd mit den genannten Bildwiedergabemitteln verbinden,
    dadurch gekennzeichnet, daß die genannte Bildumschaltvorrichtung (14) durch eine monostabile Kippschaltung (16) gesteuert wird, deren Eingang von den genannten Synchronisationsmitteln (8) die Impulsfolge zur Synchronisation der Videobilder empfängt, so daß bei den Synchronisationsimpulsen mit gerader Ordnungszahl die genannte Umschaltvorrichtung den genannten Bildwiedergabemitteln Bilder zuleitet, welche von der einen der genannten Videokameras kommen, während bei den Synchronisationsimpulsen mit ungerader Ordnungszahl die genannte Umschaltvorrichtung den genannten Bildwiedergabemitteln Bilder zuleitet, welche von der anderen der genannten Videokameras kommen, und daß zur Einstellung der relativen Winkelstellung der genannten Videokameras die Mittel zur Veränderung der Ausrichtung so betätigt werden, daß auf den Bildwiedergabemitteln die genannten Bilder, welche von den genannten Videokameras kommen, miteinander überlagert werden können.
  2. System gemäß Anspruch 1,
    dadurch gekennzeichnet, daß die erste Videokamera (3) starr mit einem ersten Apparat (21) verbunden ist, so daß ihre Aufnahmerichtung (1) zumindest ungefähr mit der Achse (22) des genannten ersten Apparats (21) zusammenfällt, und daß die zweite Videokamera (4) starr mit einem zweiten Apparat (20) verbunden ist, so daß ihre Aufnahmerichtung (2) zumindest ungefähr mit der Achse (19) des genannten zweiten Apparats (20) zusammenfällt.
EP87401743A 1986-07-31 1987-07-24 System zur Einstellung der relativen Winkelstellung zweier Videokameras, die auf das gleiche Objekt ausgerichtet sind, und Anwendung zur Ausrichtungssteuerung der beiden Apparate Expired - Lifetime EP0256915B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611130 1986-07-31
FR8611130A FR2602389B1 (fr) 1986-07-31 1986-07-31 Systeme pour ajuster les positions angulaires relatives de deux cameras video dirigees vers un meme objet et son application au reglage de l'orientation de deux appareils

Publications (2)

Publication Number Publication Date
EP0256915A1 EP0256915A1 (de) 1988-02-24
EP0256915B1 true EP0256915B1 (de) 1992-05-20

Family

ID=9337930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401743A Expired - Lifetime EP0256915B1 (de) 1986-07-31 1987-07-24 System zur Einstellung der relativen Winkelstellung zweier Videokameras, die auf das gleiche Objekt ausgerichtet sind, und Anwendung zur Ausrichtungssteuerung der beiden Apparate

Country Status (5)

Country Link
US (1) US4811093A (de)
EP (1) EP0256915B1 (de)
CA (1) CA1276038C (de)
DE (1) DE3779215D1 (de)
FR (1) FR2602389B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340309A (en) * 1990-09-06 1994-08-23 Robertson James G Apparatus and method for recording jaw motion
DE4132233C2 (de) * 1990-11-22 2003-03-06 Rheinmetall W & M Gmbh Panzerabwehrraketensystem
FR2678461B1 (fr) * 1991-06-25 1993-10-15 Aerospatiale Ste Nat Indle Procede pour determiner la position au repos de la ligne de visee d'un dispositif de prise de vue soumis a des vibrations, dispositif pour sa mise en óoeuvre et application a l'harmonisation de dispositifs de prise de vue.
GB9121418D0 (en) * 1991-10-09 1991-11-20 Nader Esfahani Rahim Imaginograph
EP0609831B1 (de) * 1993-02-03 1997-08-20 Peter Dr. Lux Verfahren zur Aufnahme von Entfernungbildern
US7280134B1 (en) 1998-01-26 2007-10-09 Thales Avionics, Inc. Landscape camera system with electronic field of view switching
DE102005013117A1 (de) * 2005-03-18 2006-10-05 Rudolf Koch Gewehr mit einer Zieleinrichtung
EP1901023B8 (de) 2006-09-18 2015-01-21 Koch, Rudolf Verfahren zur Erfassung und Darstellung von Informationen bezüglich eines Zielobjekts
US8090251B2 (en) * 2009-10-13 2012-01-03 James Cameron Frame linked 2D/3D camera system
US8170413B2 (en) 2010-03-31 2012-05-01 James Cameron Single seat-kill camera system
US8655163B2 (en) 2012-02-13 2014-02-18 Cameron Pace Group Llc Consolidated 2D/3D camera

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US2417446A (en) * 1941-08-01 1947-03-18 Bell Telephone Labor Inc Stereotelevision and television range finding
US3641261A (en) * 1969-06-04 1972-02-08 Hughes Aircraft Co Night vision system
US3705261A (en) * 1970-04-09 1972-12-05 Symbionics Inc Scanning system for yielding a three-dimensional display
US3811010A (en) * 1972-08-16 1974-05-14 Us Navy Intrusion detection apparatus
FR2480424B1 (fr) * 1980-04-11 1987-07-10 Sfim Systeme de conduite automatique de tir air-air ou air-sol
JPS5831691A (ja) * 1981-08-19 1983-02-24 Matsushita Electric Ind Co Ltd 立体テレビジヨン装置
US4713685A (en) * 1984-10-05 1987-12-15 Matsushita Electric Industrial Co., Ltd. Video monitoring apparatus

Also Published As

Publication number Publication date
DE3779215D1 (de) 1992-06-25
FR2602389B1 (fr) 1988-12-02
FR2602389A1 (fr) 1988-02-05
US4811093A (en) 1989-03-07
EP0256915A1 (de) 1988-02-24
CA1276038C (fr) 1990-11-06

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