DE102005008417A1 - Sample scanning method, involves reversibly positioning markers in respective overlapping areas, where control device makes x-y-position correction of camera on basis of known position and known outline of markers - Google Patents

Sample scanning method, involves reversibly positioning markers in respective overlapping areas, where control device makes x-y-position correction of camera on basis of known position and known outline of markers

Info

Publication number
DE102005008417A1
DE102005008417A1 DE200510008417 DE102005008417A DE102005008417A1 DE 102005008417 A1 DE102005008417 A1 DE 102005008417A1 DE 200510008417 DE200510008417 DE 200510008417 DE 102005008417 A DE102005008417 A DE 102005008417A DE 102005008417 A1 DE102005008417 A1 DE 102005008417A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
marker
characterized
overlap region
markers
known
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Withdrawn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
DE200510008417
Other languages
German (de)
Inventor
Thomas Ingendoh
Andreas Schönberger
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.)
Roth and Weber GmbH
IMAGE ACCESS COMP GmbH
IMAGE ACCESS COMPUTER GmbH
Original Assignee
IMAGE ACCESS COMP GmbH
IMAGE ACCESS COMPUTER GmbH
Roth and Weber 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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H04N1/1934Combination of arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/12Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0426Scanning an image in a series of contiguous zones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0446Constructional details not otherwise provided for, e.g. mounting of scanning components

Abstract

The method involves reversibly positioning markers (9, 9`) in respective overlapping areas, where the markers are arranged in a scanner. A control device makes x-y-position correction of a camera (6) on the basis of a known position and a known outline of the markers. The markers are deviated and displaced from a neutral position outside scanning areas of the camera into the overlapping areas. An independent claim is also included for a scanner for executing a method for scanning a sample.

Description

  • Die Erfindung betrifft ein Verfahren zum Scannen von Vorlagen mit mindestens zwei Kameras, mittels welcher die Vorlagen zeilenweise und teilweise überlappend abgetastet werden, wobei eine Steuervorrichtung die Überlappungsbereiche analysiert und eine elektronische xy-Positionskorrektur der Kameras im Überlappungsbereich vornimmt sowie einen Scanner zum Durchführen des Verfahrens. The invention relates to a method for scanning documents having at least two cameras, by means of which the originals line by line and partly sampled overlapping, wherein a controller analyzes the overlapping areas, and performs an electronic xy position correction of the cameras in the overlapping region, and a scanner for performing the method.
  • Scanner, die mit mehr als einer Kamera zum zeilenweisen Scannen von Vorlagen arbeiten, weisen Überlappungsbereiche auf, die von zwei benachbarten Kameras gleichzeitig gescannt werden. Scanners that work with more than one camera to the line by line scanning originals that have overlapping areas that are scanned by two adjacent cameras simultaneously. Um in diesem Überlappungsbereich ein optimales Bild zu erhalten, müssen die Kamerasignale entsprechend korrigiert werden. In order to obtain an optimum image in this overlap area, the camera signals must be corrected accordingly. Für den Korrekturvorgang wird in der Regel anstelle einer zu scannenden Vorlage eine Justiervorlage in den Scanner eingeführt, aufgrund deren Abtastung die Steuervorrichtung die elektronische xy-Positionskorrektur zwischen den einzelnen Kameras vornimmt. For the correction process, a Justiervorlage is inserted into the scanner normally instead of a document to be scanned, because the scan, the controller performs the electronic xy position correction between the individual cameras. Eine derartiger Korrektur ist zumindest nach dem Einschalten des Scanners notwendig. One such correction is necessary, at least after turning on the scanner. Aber auch während des Betriebes können die Kameras zB durch Wärmeeinwirkung der Belichtungseinheit dejustiert werden, so dass über den Tag verteilt und bei intensivem Gebrauch des Scanners die Justiervorlage verhältnismäßig oft in den Scanner eingebracht und eine entsprechende xy-Positionskorrektur angestoßen werden muss. But even during operation, the cameras can be out of alignment, for example by heat exposure unit so that during the day and the Justiervorlage relatively often introduced with intensive use of the scanner in the scanner and a corresponding xy position correction must be initiated.
  • Der Erfindung liegt die Aufgabe zugrunde, ein Korrekturverfahren für die Kameras eines Scanners sowie eine Korrekturvorrichtung aufzuzeigen, mittels derer die xy-Positionskorrektur automatisiert erfolgen kann. The object underlying the invention is to disclose a correction method for the cameras, as well as a scanner correction means, by means of which can be automated, the xy position correction.
  • Zur Lösung der Aufgabe wird vorgeschlagen, das mindestens ein im Scanner angeordneter Marker in dem jeweiligen Überlappungsbereich reversibel positionierbar ist und dass die Steuervorrichtung anhand der bekannten Position und der bekannten Kontur des Markers die xy-Positionskorrektur der Kameras vornimmt. To achieve the object, it is proposed that at least one is arranged in the scanner marker in each area of ​​overlap is reversibly positionable and that the control device based on the known position and the known contour of the marker performs the xy position correction of the cameras. Durch den Einsatz eines Markers erübrigt sich die Justiervorlage, die in der Regel aus Papier bestehen und nach mehrmaligem Gebrauch oft beschädigt sind und ausgetauscht werden müssen und deren genaue Positionierung im Scanner aufwändig ist. Through the use of a marker, the Justiervorlage, which are usually made of paper and are often damaged after repeated use and must be replaced and their precise positioning in the scanner is consuming unnecessary.
  • Es hat sich bewährt, dass der Marker aus einer Ruheposition außerhalb des Scannbereichs der Kameras in den Überlappungsbereich verschwenk- und/oder verschiebbar ist. It has been proven that the marker pivotable from a rest position outside of the scanning area of ​​the cameras in the overlapping area and / or is displaceable. Dadurch stört der Marker während des üblichen Scannvorgangs nicht. Thus, the marker does not interfere during normal scanning. Lediglich zur xy-Positionskorrektur der Kameras wird der Marker in die entsprechende Position verschwenkt bzw. verschoben. Only to the xy position correction of the cameras of the marker is pivoted to the appropriate position or moved.
  • Von Vorteil ist, wenn der Analysiervorgang durch das Positionieren des Markers in den Überlappungsbereich gestartet wird. It is advantageous if the analyzing process is started by positioning the marker in the overlap region. Das Einschwenken und/oder Verschieben des Markers kann dabei zeitabhängig erfolgen und/oder in Abhängigkeit von Temperaturänderungen, wobei der Startvorgang vorzugsweise automatisch erfolgen soll. The pivoting and / or moving the marker can take place time-dependently and / or depending on temperature changes, whereby the starting operation should preferably be done automatically. Dabei ist es sinnvoll, wenn Scannpausen ebenso ausgenutzt werden wie ein automatischer Korrekturvorgang unmittelbar vor dem eigentlichen Scannvorgang. It is useful when scanning pauses are also exploited as an automatic correction process immediately before the actual scanning.
  • Es hat sich bei einem erfindungsgemäßen Scanner als vorteilhaft erwiesen, dass dieser einen Marker aufweist, der in dem Überlappungsbereich positionierbar ist. It has proved in an inventive scanner as advantageous that it has a marker that is positioned in the overlap region. Dazu wird der Marker vorzugsweise motorisch angetrieben, wobei es sich um bei spielsweise einen Elektromotor aber auch um einen hydraulischen oder automatischen Antrieb handeln kann. For this, the marker is preferably driven by a motor, which is an electric motor but can also be to a hydraulic or automatic drive during play.
  • Von Vorteil ist, wenn der Marker im Wesentlichen zweidimensional ausgebildet ist und eine einfach berechenbare geometrische Form aufweist. It is advantageous if the marker is substantially two-dimensional design and has a simple geometric shape predictable. Dadurch lassen sich bei bekannter Position und der bekannten einfachen Kontur des Markers leicht Fehlstellungen der Kameras ermitteln und eine entsprechende xy-Positionskorrektur herbeiführen. This can easily be determined deformities of the cameras and bring about a corresponding xy position correction in a known position and the known simple contour of the marker. Als einfache geometrische Formen haben sich Dreiecke, Vierecke, einfache Mehrecke und Kreise bewährt. As simple geometric shapes to triangles, squares, simple polygons and circles have proven.
  • Wir eine dreidimensionale Form des Markers vorgesehen, so ist auch ein Höhenkorrektur der Kamerassignale möglich. We provided a three-dimensional shape of the marker, including a height correction of camera signals is possible.
  • Die Erfindung wird anhand einer Zeichnung näher erläutert. The invention is further illustrated by a drawing.
  • Dabei zeigen: They show:
  • 1 1 einen Ausschnitt aus einem erfindungsgemäßen Scanner und a section of an inventive scanner and
  • 2 2 eine Draufsicht auf den Scannbereich des erfindungsgemäßen Scanners. a plan view of the scanning area of ​​the scanner according to the invention.
  • 1 1 zeigt die wesentlichen Elemente eines Scanners shows the essential elements of a scanner 1 1 , der aus einem Originaleinzug Consisting of a document feeder 2 2 mit den Antrieben with the drives 3 3 und and 4 4 , die in einem Papierführungskanal That in a paper guide channel 5 5 angeordnet sind, besteht. are arranged, there is. Über die Antriebe About the drives 3 3 und and 4 4 wird das Original einerseits vorwärts bewegt, andererseits gestrafft. the original is the one hand, moves forward, on the other hand tightened. Das kann durch eine nicht dargestellte Regelung erfolgen, die den Antrieb This can be done by a not shown control, drive the 4 4 mit einer geringfügig höheren Geschwindigkeit laufen lässt als den Antrieb run at a slightly higher speed than the drive can be 3 3 . ,
  • Über dem Papierführungskanal About the paper guide channel 5 5 sind Kameras are cameras 6 6 angeordnet. arranged. Über nicht näher dargestellte Optiken wird das Original durch die Kameras Through non-illustrated optics, the original is by the cameras 6 6 abgetastet. sampled. Die Kamerastrahlen The camera rays 7 7 deuten diesen Abtastvorgang an. indicate this scanning. Da die Kameras Since the cameras 6 6 oberhalb des Originals angeordnet ist und die Optiken nach unten ausgerichtet ist, können diese weniger schnell verstauben. is arranged above the original and the optics is aligned to bottom, they can gather dust less quickly. Hinzu kommt, dass das Licht, welches das Original belichtet, und welches von den Kameras In addition, the light which illuminates the original, and which of the cameras 6 6 aufgefangen wird, durch kein Auflagenglas, welches leicht verschmutzen könnte, dringen muss, um zu der jeweiligen Optik zu gelangen. is collected, must penetrate through no platen glass which could easily become dirty in order to get to the respective optics. Zum Einfädeln des Originals dienen Führungsleisten For threading of the original are guide rails 10 10 . , Ein Auflagenglas erübrigt sich von daher ebenfalls. A platen glass is therefore also unnecessary from.
  • Über einen Antrieb Via a drive 8 8th sind Marker markers are 9 9 , . 9' 9 ' in den Bereich der Kamerastrahlen in the range of the camera rays 7 7 einschwenkbar. pivoted.
  • 2 2 zeigt einen Bereich des Papierführungskanals, mit Führungsleisten shows a portion of the paper guide channel, with guide strips 10 10 , . 10' 10 ' , den unteren Antriebsrollen , The lower drive rollers 11 11 des Antriebes the drive 3 3 sowie die Antriebe and the drives 8 8th , . 8' 8th' , welche die Marker Which the marker 9 9 , . 9' 9 ' in den Erfassungsbereich der Kameras in the detection range of the cameras 6 6 geschwenkt haben. have swung. Weiterhin sind die Antriebsrollen Furthermore, the drive rollers 12 12 des Antriebs of the actuator 4 4 zu erkennen. to recognize.
  • Anhand der bekannten Position und der bekannten Geometrie der Marker Based on the known position and the known geometry of the markers 9 9 , . 9' 9 ' werden die Abtastbereiche be the scanning 13 13 , . 14 14 , . 15 15 von drei Kameras three cameras 6 6 im Überlappungsbereich in the overlap region 16 16 , . 17 17 elektronisch in bekannter Weise xy-positionskorrigiert. electronically xy position corrected in a known manner. Von Vorteil ist, dass die Marker It is advantageous that the markers 9 9 , . 9' 9 ' stets eine feste Position und eine feste Geometrie aufweisen. always have a fixed position and a fixed geometry.
  • Die herkömmlichen einzulegenden Justiervorlagen, die exakt ausgerichtet werden müssen, entfallen. The conventional adjustment charts to be inserted, which must be precisely aligned omitted.
  • 1 1
    Scanner scanner
    2 2
    Originaleinzug document feeder
    3 3
    Antrieb drive
    4 4
    Antrieb drive
    5 5
    Papierführungskanal Paper guide channel
    6 6
    Kamera camera
    7 7
    Kamerastrahl camera beam
    8 8th
    Antrieb drive
    9 9
    Marker marker
    10 10
    Führungsleiste guide rail
    11 11
    Antriebsrollen drive rollers
    12 12
    Antriebsrollen drive rollers
    13 13
    Abtastbereich scanning
    14 14
    Abtastbereich scanning
    15 15
    Abtastbereich scanning
    16 16
    Überlappungsbereich overlap area
    17 17
    Überlappungsbereich overlap area

Claims (12)

  1. Verfahren zum Scannen von Vorlagen mit mindestens zwei Kameras ( A method for scanning documents with at least two cameras ( 6 6 ), über welche die Vorlagen zeilenweise und teilweise überlappend abgetastet werden, wobei eine Steuervorrichtung die Überlappungsbereiche ( ) Through which the originals are scanned line by line and partially overlapping, wherein a control device (the overlapping areas 16 16 , . 17 17 ) analysiert und eine elektronische xy-Positionskorrektur der Kameras ( ) And analyzed (an electronic xy position correction of the cameras 6 6 ) im Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) vornimmt, dadurch gekennzeichnet , dass mindestens ein im Scanner ( ), Performs characterized in that at least one (in the scanner 1 1 ) angeordneter Marker ( ) Arranged marker ( 9 9 , . 9' 9 ' ) in den jeweiligen Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) reversibel positionierbar ist, und dass die Steuervorrichtung anhand der bekannten Position und der bekannten Kontur des Markers ( ) Is reversibly positionable, and that the control device (based on the known position and the known contour of the marker 9 9 , . 9' 9 ' ) die xy-Positionskorrektur der Kameras ( ) The xy position correction of the cameras ( 6 6 ) vornimmt. ) Performs.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Marker ( A method according to claim 1, characterized in that the marker ( 9 9 , . 9' 9 ' ) aus einer Ruheposition außerhalb des Scannbereichs der Kameras ( ) (From a rest position outside of the scanning area of ​​the cameras 6 6 ) in den Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) verschwenk- und/oder verschiebbar ist. ) Pivotable and / or slidable.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Analysiervorgang durch das Positionieren des Markers ( The method of claim 1 or 2, characterized in that the analyzing process (by the positioning of the marker 9 9 , . 9' 9 ' ) in den Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) gestartet wird. is started).
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Positionieren des Markers ( A method according to any one of claims 1 to 3, characterized in that the positioning of the marker ( 9 9 , . 9' 9 ' ) in den Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) zeitabhängig erfolgt. met) time-dependent.
  5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Positionieren des Markers ( A method according to any one of claims 1 to 3, characterized in that the positioning of the marker ( 9 9 , . 9' 9 ' ) in den Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) temperaturabhängig erfolgt. is carried out) dependent on temperature.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Positionieren des Markers ( A method according to any one of claims 1 to 5, characterized in that the positioning of the marker ( 9 9 , . 9' 9 ' ) in den Überlappungsbereich ( ) (In the overlap region 16 16 , . 17 17 ) automatisch erfolgt. done) automatically.
  7. Scanner ( scanner ( 1 1 ) zum Durchführen des Verfahrens nach einem der Ansprüche 1 bis 6, mit mindestens zwei Kameras ( ) (For performing the method according to any one of claims 1 to 6, with at least two cameras 6 6 ) zum zeilenweisen und teilweise überlappenden Abtasten von Vorlagen und mit einer Steuervorrichtung zum Analysieren des Überlappungsbereiches ( ) (For line-wise and partly overlapping scanning templates and with a control device for analyzing the overlap region 16 16 , . 17 17 ), gekennzeichnet durch mindestens einen im Scanner ( ), Characterized by at least one (in the scanner 1 1 ) angeordneten, in dem jeweiligen Überlappungsbereich ( ) Arranged (in the respective overlap region 16 16 , . 17 17 ) reversibel positionierbaren Marker ( ) Reversibly positionable markers ( 9 9 , . 9' 9 ' ). ).
  8. Scanner nach Anspruch 7, dadurch gekennzeichnet, dass der Marker ( Scanner according to claim 7, characterized in that the marker ( 9 9 , . 9' 9 ' ) motorisch angetrieben ist. ) Is motor-driven.
  9. Scanner nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass der Marker ( Scanner according to one of claims 7 or 8, characterized in that the marker ( 9 9 , . 9' 9 ' ) zweidimensional ausgebildet ist und eine einfache geometrische Form aufweist. ) Is designed two-dimensional and has a simple geometric shape.
  10. Scanner nach Anspruch 9, dadurch gekennzeichnet, dass der Marker ( Scanner according to claim 9, characterized in that the marker ( 9 9 , . 9' 9 ' ) mehreckig oder rund ausgebildet ist. ) Is polygonal or round.
  11. Scanner nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der Marker ( Scanner according to claim 7 or 8, characterized in that the marker ( 9 9 , . 9' 9 ' ) dreidimensional ausgebildet ist und eine einfache geometrische Form aufweist. ) Is formed three-dimensionally and which has a simple geometric shape.
  12. Scanner nach Anspruch 11, dadurch gekennzeichnet, dass der Marker ( Scanner according to claim 11, characterized in that the marker ( 9 9 , . 9' 9 ' ) die Form einer Pyramide eines Kegels oder einer Kalotte aufweist. ) Has the shape of a pyramid of a cone or dome.
DE200510008417 2005-02-24 2005-02-24 Sample scanning method, involves reversibly positioning markers in respective overlapping areas, where control device makes x-y-position correction of camera on basis of known position and known outline of markers Withdrawn DE102005008417A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200510008417 DE102005008417A1 (en) 2005-02-24 2005-02-24 Sample scanning method, involves reversibly positioning markers in respective overlapping areas, where control device makes x-y-position correction of camera on basis of known position and known outline of markers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510008417 DE102005008417A1 (en) 2005-02-24 2005-02-24 Sample scanning method, involves reversibly positioning markers in respective overlapping areas, where control device makes x-y-position correction of camera on basis of known position and known outline of markers

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059766A1 (en) 2007-04-10 2008-10-16 Thomas Ingendoh Overlapping region correcting method for scanning device, involves arranging marker above scanning plane, such that cameras detect common point in overlapping region by rays that run past marker laterally
DE102015001419A1 (en) 2015-02-06 2016-08-11 Image Access GmbH A method for correcting an overlapping region and the scanning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059766A1 (en) 2007-04-10 2008-10-16 Thomas Ingendoh Overlapping region correcting method for scanning device, involves arranging marker above scanning plane, such that cameras detect common point in overlapping region by rays that run past marker laterally
DE102015001419A1 (en) 2015-02-06 2016-08-11 Image Access GmbH A method for correcting an overlapping region and the scanning device

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