EP1805478A1 - Dispositif de mesure tridimensionnelle d'objets - Google Patents

Dispositif de mesure tridimensionnelle d'objets

Info

Publication number
EP1805478A1
EP1805478A1 EP05804638A EP05804638A EP1805478A1 EP 1805478 A1 EP1805478 A1 EP 1805478A1 EP 05804638 A EP05804638 A EP 05804638A EP 05804638 A EP05804638 A EP 05804638A EP 1805478 A1 EP1805478 A1 EP 1805478A1
Authority
EP
European Patent Office
Prior art keywords
cameras
bottles
light
light source
bottle
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Withdrawn
Application number
EP05804638A
Other languages
German (de)
English (en)
Inventor
Markus Duelli
Heiko Kempe
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.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
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 Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Publication of EP1805478A1 publication Critical patent/EP1805478A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/04—Sorting according to size
    • B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
    • B07C5/122—Sorting according to size characterised by the application to particular articles, not otherwise provided for for bottles, ampoules, jars and other glassware
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

Definitions

  • the invention relates to a device for three-dimensional measurement of containers such as in particular bottles and crates with bottles set for empties return systems.
  • a determination of the contour of the bottle crates and the bottles therein is required.
  • a height dimension of the box, its length and its width and the height determination of the bottle necks and the number of bottles is necessary. This results in the box shape and the position of the bottles in the box and the number of bottles in the box.
  • EP 404 749 B1 describes a method for determining the dimensions of a container in which a transit time method is used.
  • a transmitting device actively emits light that is partially reflected on the measuring object. Parts of the reflected light are received by a sensor element and depending on the respective method can be concluded by evaluation of the transmitted and received signal on the distance to the measurement object or on the object geometry.
  • a rotating mirror is provided so that the emitted light can sweep the entire contour of the container.
  • a disadvantage of runtime methods is the extremely complex technology that is necessary for detecting the physical effect. In particular, a very large space is required in order to detect the measured time differences can. This is however with the Installation of these devices in supermarkets hinderlich, since here the space is often tight.
  • From DE 198 32 615 A1 discloses a method for detecting the shape of bottle-shaped container is known in which light is coupled into the bottle through its bottom of the bottle, so that this light through the
  • Bottle radiates outward again and from a camera disposed above the bottle, an image of the illuminated bottle can be recorded. However, this procedure does not apply if the
  • Bottle is in a closed bottle crate, because then a lighting from below is not possible.
  • the invention thus has the object to provide a device for three-dimensional detection of objects such as containers, especially bottles and crates with bottles set for empties return systems, which is characterized by a compact design and thus a small space and here in particular by a small depth and nonetheless ensures a safe and fast detection of the container.
  • it should be characterized by a robust construction and a high maintenance-free.
  • This object is achieved according to the invention by a device for three-dimensional measurement of objects such as containers, especially bottles and crates with bottles set for reverse vending systems, in which a stereo image of the object is provided by two cameras, which are arranged above the object and a in essential axis-parallel beam path exhibit.
  • a substantially annular light source is provided, which is arranged between the object and the cameras and enables diffuse illumination of the object.
  • the solution according to the invention has the advantage that it requires a small space, has no moving mechanical components and is very maintenance-free overall.
  • Fig. 1 a schematic view of the device according to the invention for the return of containers, in particular a bottle crate with bottles.
  • a device for the return of objects such as containers, in particular bottles in crates is shown.
  • this device is in a reverse vending machine.
  • the bottle crate 1 is located on a conveyor belt 2.
  • the box 1 is placed on the conveyor belt 2 and is then transported by the conveyor belt 2 in the detection area of two cameras 3, 4.
  • the conveyor belt 2 is stopped so that an image of the dormant bottle crate can be recorded.
  • the invention can also be provided to detect the bottle crate 1 during movement on the conveyor belt 2 with the cameras 3,4.
  • the two cameras 3, 4, which are preferably high-resolution CCD cameras, are arranged at a fixed distance from each other and substantially parallel to the axis and are located in a plane above thestationnkastns 1. To increase the reliability of detection, these cameras 3,4 may also be designed as color cameras. Preferably, the distance between the two cameras 3, 4 is about 8 cm. In addition, the cameras 3, 4 are preferably not arranged completely parallel to each other, but at a certain angle, so that the bottle crate 1 is received from different directions.
  • the calibration 3, 4 to each other is advantageously carried out with an automated calibration. Preferably, cameras are used with Vz "screen size. Altogether, the cameras 3, 4 above the object side of the bottle case 1 telecentric beam paths for the recording of images of the bottle case 1 are made possible by the arrangement.
  • the three-dimensional structure of the bottle crate can be developed as a stereo image. Since the cameras 3,4 are rigid with respect to their positioning relative to the bottle crate 1 as well as with each other, this enables a robust mechanical construction of the device, since it is possible to dispense with movable components. Since preferably also the box 1 rests during the image acquisition, a simple geometry for image acquisition is created.
  • the shape of the light source is adapted to the rectangular contour of the bottle crate and formed as a rectangular light band 5.
  • the light band 5 is made of cold cathode tubes, since they emit a diffused light and are characterized by a long service life.
  • a number of light-emitting diodes, in particular light-intensive LEDs are used.
  • this type of light source 5 is a diffuse and uniform illumination of the container to be detected, reached in particular the bottle crate. The positioning of the light source above the bottle crate 1 and the diffuse illumination ensure a homogeneous illumination of the bottles located in the bottle crate, so that a clear image of them can be taken.
  • diffusers can be used as lenses.
  • a further camera 6 is provided, which is arranged on one side of the conveyor belt 2.
  • the logo is a
  • Mirror 7 is provided, which displays the image of the logo on the side surfaces of the logo
  • Bottle crate 1 on the camera 6 directs.
  • the mirror is substantially perpendicular and inclined at 45 ° to the conveyor belt direction. Due to the vertical arrangement of the mirror dirt deposits on the mirror by the action of gravity can be substantially avoided.
  • the required space size is very small due to the structure described, since essentially the dimensions of the bottle crate itself are a measure of the required space.
  • the box detection itself is carried out in two steps.
  • image processing with means of image processing, initially a recognition of the size relationships of the box, such as the height, width and length, is carried out.
  • the box edges in the two images of the cameras are touched from the outside with a corresponding image processing algorithm and from this the dimensions of the box are calculated determined.
  • the images and the computed box dimensions are then passed to another algorithm, which is now to recognize the bottles in the box.
  • the derivative in the two spatial directions x, y is first calculated from the captured pixels. Now the images are searched line by line for correspondence points, which are gradient thresholds.
  • the intensity value, the X gradient and the Y gradient are stored. Subsequently, the two images are linked together and the difference of the gray values of both images is stored and compared with a database. If the determined bottle crate data is known in the database, the crate is accepted by the return system. Overall, the image recognition should be about 1 - 2 seconds.
  • the resolution of the box survey lies with the described inventive system at +/- 1 mm, so that all commercial types of bottles and boxes can be detected with high security.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un dispositif de mesure tridimensionnelle d'objets, tels que des récipients, en particulier des bouteilles et des caisses de bouteilles remplies de bouteilles, une imagerie stéréo de l'objet étant effectuée par deux caméras, placées au-dessus de l'objet et présentant une trajectoire de faisceau sensiblement paraxiale. Une source lumineuse sensiblement annulaire, prévue pour éclairer l'objet, est placée entre l'objet et les caméras et permet un éclairage dudit objet.
EP05804638A 2004-10-29 2005-10-25 Dispositif de mesure tridimensionnelle d'objets Withdrawn EP1805478A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004052978 2004-10-29
PCT/DE2005/001901 WO2006045285A1 (fr) 2004-10-29 2005-10-25 Dispositif de mesure tridimensionnelle d'objets

Publications (1)

Publication Number Publication Date
EP1805478A1 true EP1805478A1 (fr) 2007-07-11

Family

ID=35464121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05804638A Withdrawn EP1805478A1 (fr) 2004-10-29 2005-10-25 Dispositif de mesure tridimensionnelle d'objets

Country Status (3)

Country Link
EP (1) EP1805478A1 (fr)
NO (1) NO20072723L (fr)
WO (1) WO2006045285A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014214A1 (de) * 2007-03-24 2008-09-25 Krones Ag Vorrichtung zum Überprüfen der Griffleisten eines Flaschenkastens
DE102008025659A1 (de) * 2008-05-28 2010-01-21 Wincor Nixdorf International Gmbh Verfahren und Vorrichrung zur Vermeidung von Alias-Effekten bei der optischen Erkennung von Transportbehältnissen
DE102008025658A1 (de) * 2008-05-28 2009-12-03 Wincor Nixdorf International Gmbh Optische Erfassung und Klassifizierung von gegenständlichen Leergut-Objekten in einem Leergut-Rückgabesystem
EP2698979B1 (fr) * 2012-08-16 2017-05-03 Wincor Nixdorf International GmbH Dispositif et procédé de présentation d'objets

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597353A3 (fr) * 1992-11-03 1994-10-26 Kronseder Maschf Krones Méthode de contrÔle de caisses de bouteilles et dispositif de mise en oeuvre de la méthode.
DE19509631A1 (de) * 1995-03-17 1996-09-19 Helmut A Kappner Verfahren und Einrichtung zum Erkennen und Sortieren von Getränkebehältern, insbesondere Flaschen und Flaschenkästen
DE19832615B4 (de) * 1998-07-21 2004-04-15 Metec Gmbh Verfahren und Vorrichtung zur Erkennung der jeweiligen Form mehrerer in einem Kasten befindlicher flaschenförmiger Behälter
US7277187B2 (en) * 2001-06-29 2007-10-02 Quantronix, Inc. Overhead dimensioning system and method
JPWO2003008904A1 (ja) * 2001-07-17 2004-11-11 三洋電機株式会社 形状測定装置
JP4896373B2 (ja) * 2001-12-28 2012-03-14 ルドルフテクノロジーズ インコーポレイテッド 立体３次元計測システムおよび方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006045285A1 *

Also Published As

Publication number Publication date
NO20072723L (no) 2007-05-29
WO2006045285A1 (fr) 2006-05-04

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