EP0959796A1 - Determination de la position d'un objet mobile - Google Patents

Determination de la position d'un objet mobile

Info

Publication number
EP0959796A1
EP0959796A1 EP97923934A EP97923934A EP0959796A1 EP 0959796 A1 EP0959796 A1 EP 0959796A1 EP 97923934 A EP97923934 A EP 97923934A EP 97923934 A EP97923934 A EP 97923934A EP 0959796 A1 EP0959796 A1 EP 0959796A1
Authority
EP
European Patent Office
Prior art keywords
microscope
image data
computer
image
field
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.)
Ceased
Application number
EP97923934A
Other languages
German (de)
English (en)
Inventor
Roger Spink
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.)
Leica Microsystems Schweiz AG
Original Assignee
Leica Mikroskopie Systeme 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
Application filed by Leica Mikroskopie Systeme AG filed Critical Leica Mikroskopie Systeme AG
Publication of EP0959796A1 publication Critical patent/EP0959796A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/20—Surgical microscopes characterised by non-optical aspects

Definitions

  • the invention relates to an arrangement for determining the position of a point viewed by a microscope on a medium.
  • the medium to be examined does not necessarily have to be a stationary object, but can also be a moving medium for this invention
  • the invention can be used not only in medicine, but also in other areas where microscopic examinations are carried out
  • the position determination of a microscope and thus of the operating field seen through the microscope according to the current state of the art is carried out, for example, by means of an infrared positioning system.
  • Three infrared transmitters with coded transmission signals are arranged on the microscope, the signals of which are detected by infrared receivers arranged in the room
  • Joints have measuring elements (similar to a robot arm), which continuously monitor the change in position of the microscope and determine the position via a microprocessor, and on the other hand determine the position by means of ultrasonic transmitters and sensors, which are arranged on the microscope
  • Marking diodes of the microscope are attached in the room. This means that interference can arise between the transmitter and the receiver. This can be caused, for example, by a person who brings himself or an object into the area of the signal exchange
  • the object of the invention is therefore to create a microscope with a position determination system that does not allow any external influences that influence the position determination and being able to falsify You should know exactly where the microscope is oriented without having to look through the microscope as a user
  • the task is solved by the use according to the invention of at least one image acquisition unit on the microscope and at least one test specimen, which is used for calibrating the system and for measuring
  • the specimen should be firmly connectable to the object to be viewed, both when microscoping and before using other imaging techniques such as MRI, X-ray, PE, etc
  • the position is determined by means of image recognition by an image acquisition unit which is rigidly connected to the microscope or is integrated into it.
  • this image acquisition unit looks at a known object, calibration can take place. If the microscope with the image capturing device then looks at a foreign object, which is, however, rigidly and visibly connected to the known object, the position or location of the foreign object can be determined therefrom by means of image processing. If necessary, the originally foreign object can then, possibly only temporarily as a known - or calibration object.
  • the image capture unit is turned at a known angle, e.g. attached parallel to the beam path of the microscope.
  • Both the sensor information for certain settings of the microscope and the image acquisition unit can be fed into a computer, which uses the data supplied to calculate the exact position of the operating field relative to the microscope.
  • the image seen through the microscope can then be superimposed with other image data (e.g. MRI image data or the like) in the correct position by means of displays and insertion elements.
  • the field of view thus obtained can be displayed on the computer screen or another connected monitor.
  • the image capturing device has a field of view that is enlarged compared to the microscope. Even if the image capturing device is not connected to the microscope outside it, but is possibly integrated into it and possibly even looks through the main objective itself, it should have an enlarged field of view - for example due to a different magnification - compared to the microscopic beam path, by one to ensure a good sphere of influence of position determination.
  • the following information can be important: the direction of view of the microscope or its main objective; the position of the main lens relative to the operating field, which after knowing the direction e.g. via the z-distance, which is additionally determined using a separate measuring device, or can also be calculated from the image information by the test specimen or specimens after knowledge of the setting data of the image capturing device.
  • Comparison body contains points (e.g. corners, depressions) of which all information is known when it is in a positioned position. With this information, which is stored in the computer as comparison values, the position determination system is set.
  • the reference body is pre-positioned under the microscope in the field of view of the image acquisition unit.
  • the microscope is now positioned on the known points.
  • the comparison values of the points stored in the computer enable arithmetic calibration adjustment. From the information that the computer receives through this process, any other position considered can now be calculated and its coordinates can be displayed, for example on a screen.
  • the image acquisition unit is not directed in the same direction as the microscope, but in another, for example on the ceiling of an operating room, in order to enable the position to be determined there using markings.
  • test specimen can have different contours. Any systems, e.g. CCD cameras. How the connections between microscope - computer and image acquisition unit - computer look depends on the devices used and the interface of the computer.
  • FIG. 1 shows a basic illustration of the microscope according to the invention with the image acquisition unit, the connected computer and the comparison body.
  • Fig. 1 illustrates a principle of the invention.
  • the illustration shows a microscope 1 with its optical axis 2, in which the comparison body 5 lies.
  • the image acquisition unit 3 is mounted parallel to the optical axis 2, and the comparison body 5 is also located in the field of view 4 thereof.
  • the exact viewing position is calculated using the object distance 8 obtained via the microscope magnification and the data from the image acquisition unit 3, which are transferred to the computer 6 via the connections 9.
  • Other image data 10 e.g. X-ray, CT, or MRI image data
  • the observation field thus obtained can be displayed on the computer screen 7a and / or on an external monitor 7b.
  • Variants with more than one camera are also within the scope of the invention. When using only one camera, several orientation points on a known object are advantageous, while when using two or more cameras a single marking point is also sufficient
  • Source for other image data e.g. X-ray, CT, PE, MRI image data or the like

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

Le problème des systèmes de détermination de position faisant appel à des émetteurs infrarouge réside dans le fait que la distance entre les diodes électroluminescentes infrarouge montées sur le microscope et les récepteurs infrarouge placés dans la pièce est trop importante. Des influences extérieures provoquées par les hommes ou par d'autres éléments peuvent conduire sur cette distance à des interférences dans le système. L'invention vise à empêcher ces interférences. A cet effet, on choisit une conception très compacte. Le système de détection de position selon l'invention comprend un microscope (1) et une unité d'imagerie (3) fixée directement sur le microscope, ce qui permet de supprimer les distances provoquant des interférences. Le système est étalonné au moyen d'un élément comparateur (5) afin d'être ajusté de façon optimale à l'utilisation souhaitée. Un ordinateur (6) permet de superposer d'autres données d'image (10) (par ex. des données d'imagerie par résonance magnétique) au trajet des rayons du microscope. Le champ de vision ainsi obtenu peut être représenté soit sur un écran d'ordinateur (7a) soit sur un moniteur externe (7b).
EP97923934A 1996-06-03 1997-05-17 Determination de la position d'un objet mobile Ceased EP0959796A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH138796 1996-06-03
CH138796 1996-06-03
PCT/EP1997/002544 WO1997046168A1 (fr) 1996-06-03 1997-05-17 Determination de la position d'un objet mobile

Publications (1)

Publication Number Publication Date
EP0959796A1 true EP0959796A1 (fr) 1999-12-01

Family

ID=4209246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97923934A Ceased EP0959796A1 (fr) 1996-06-03 1997-05-17 Determination de la position d'un objet mobile

Country Status (4)

Country Link
US (1) US6081370A (fr)
EP (1) EP0959796A1 (fr)
JP (1) JP2001525074A (fr)
WO (1) WO1997046168A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040498A1 (de) * 1999-09-07 2001-03-15 Zeiss Carl Fa Vorrichtung zur bildgestützten Bearbeitung eines Arbeitsobjekts
JP4633210B2 (ja) * 1999-11-02 2011-02-16 オリンパス株式会社 手術用顕微鏡装置
DE10100335B4 (de) * 2001-01-03 2017-02-09 Carl Zeiss Meditec Ag Vorrichtung zur Anzeige einer Größe im Blickfeld eines Benutzers und Verwendung der Vorrichtung
JP2005515910A (ja) * 2002-01-31 2005-06-02 ブレインテック カナダ インコーポレイテッド シングルカメラ３ｄビジョンガイドロボティクスの方法および装置
DE102005018432A1 (de) * 2005-04-21 2006-10-26 Leica Microsystems (Schweiz) Ag Optisches System mit Display
JP2008052139A (ja) * 2006-08-25 2008-03-06 Olympus Corp 観察装置
US8437535B2 (en) 2006-09-19 2013-05-07 Roboticvisiontech Llc System and method of determining object pose
WO2008076942A1 (fr) * 2006-12-15 2008-06-26 Braintech Canada, Inc. Système et procédé d'identification d'objets
US8559699B2 (en) * 2008-10-10 2013-10-15 Roboticvisiontech Llc Methods and apparatus to facilitate operations in image based systems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567478A (en) * 1982-03-12 1986-01-28 Carl-Zeiss-Stiftung, Heidenheim/Brenz Liquid-crystal display for microscopes
IE882350L (en) * 1988-07-29 1990-01-29 Westinghouse Electric Systems Image processing system for inspecting articles
US4942539A (en) * 1988-12-21 1990-07-17 Gmf Robotics Corporation Method and system for automatically determining the position and orientation of an object in 3-D space
US5083073A (en) * 1990-09-20 1992-01-21 Mazada Motor Manufacturing U.S.A. Corp. Method and apparatus for calibrating a vision guided robot
US5235363A (en) * 1991-05-10 1993-08-10 Nview Corporation Method and apparatus for interacting with a computer generated projected image
DE4134481C2 (de) * 1991-10-18 1998-04-09 Zeiss Carl Fa Operationsmikroskop zur rechnergestützten, stereotaktischen Mikrochirurgie
JP2607828B2 (ja) * 1993-10-04 1997-05-07 永島醫科器械株式会社 ハイディフィニションテレビ統合顕微鏡システム
DE69519623T2 (de) * 1994-03-24 2002-05-23 Koninklijke Philips Electronics N.V., Eindhoven Operations-mikroskope

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9746168A1 *

Also Published As

Publication number Publication date
JP2001525074A (ja) 2001-12-04
US6081370A (en) 2000-06-27
WO1997046168A1 (fr) 1997-12-11

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