EP0813727B1 - Process and device for measuring, recording and reproducing measurement information on a measured object - Google Patents

Process and device for measuring, recording and reproducing measurement information on a measured object Download PDF

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Publication number
EP0813727B1
EP0813727B1 EP96901700A EP96901700A EP0813727B1 EP 0813727 B1 EP0813727 B1 EP 0813727B1 EP 96901700 A EP96901700 A EP 96901700A EP 96901700 A EP96901700 A EP 96901700A EP 0813727 B1 EP0813727 B1 EP 0813727B1
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European Patent Office
Prior art keywords
measurement information
information
image
measurement
image information
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EP96901700A
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German (de)
French (fr)
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EP0813727A1 (en
Inventor
Volker Wienstroth
Manfred Borsch
Reiner Pfaff
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Leica Geosystems AG
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Leica Geosystems AG
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles

Definitions

  • the invention relates to a method and a device for measurement, Recording and playback of measurement information of a measurement object after the preamble of claim 1 and claim 8.
  • a method for traffic monitoring is known from DE 43 26 398 C1, in which the measurement information determined by a speed sensor in sync with those supplied by an electro-optical camera Image information on a soundtrack of the recording medium in the electro-optical camera can be saved.
  • the Measurement and image information on separate areas of a video tape namely the audio track on the one hand and the image track on the other hand, stored, so that the data is automatically evaluated independently of one another can be.
  • a disadvantage of the method is that two physically separate areas of a storage medium, for example the Audio and video track of a video tape are required.
  • the object of the present invention is therefore a method and a Device for measuring, recording and reproducing Measurement information together with the image information of a measurement object specify so that the fully automatic evaluation of the measurement information is facilitated.
  • the advantage is achieved that a simple separate measurement signal processing of the measurement information on the one hand and the Image information on the other hand is made possible.
  • the one Image sequence assigned measurement information together with the Image information of the image sequence in a common memory area stored on a record carrier.
  • the measurement information is in a form that can be read by data for the automatic evaluation, without it have been converted into pixels or image lines. For later evaluation only need the measurement information separated from the image information and be compared with a comparison value, so that when the A quick access to the corresponding image sequence and the common display of image and measurement information is made possible.
  • Separate processing of the image information is advantageous on the one hand and the measurement information on the other hand until they are merged into a fade-in unit guaranteed.
  • the measurement information is advantageously together with the Image information e.g. stored on an image track of a magnetic tape, wherein the measurement information is only part of one or more Lines of the field created during image scanning need.
  • the measurement information is only part of one or more Lines of the field created during image scanning need.
  • a line area is preferably for the Storage of the measurement information is provided, which is outside the for the Viewer lies on the monitor visible image area.
  • the electro-optical camera has one Buffer in which image information of an image sequence be cached.
  • the measurement information is in a Comparison circuit then checked whether it was a predetermined Exceed threshold.
  • Exceed the measurement information of an image sequence the predefined threshold value they are assigned to them Image information together with the measurement information for final storage transferred to a record carrier.
  • Exceed the measurement information this image sequence does not have the threshold value, the buffered Image information not forwarded to the recording medium.
  • Other image information for later This means that documentation purposes are not required at all stored on the record carrier.
  • the electro-optical camera 11 can be used as a video camera or as part of one Camcorders be trained. The speed sensor and the electro-optical camera and only the object not shown moves yourself.
  • a mixing unit 12 is the downstream of the electro-optical camera 11 and the sensor 10 and serves to the measurement information output by the sensor 10 in a data-readable form together with the image information representing the measurement object combine and in one for each exposure of the measurement object (image sequence) to store the intended memory area of a record carrier 13.
  • the measurement information is encoded and then in the individual fields of the image information mixed in.
  • the record carrier 13 can be a digital memory or an analog one Be trained.
  • the record carrier 13 is preferably as Magnetic tape is formed and is an integral part of the electro-optical Camera 11. According to the speed measurement information together with the image information in each case for the image information intended area is saved, with a possibly existing and for the area provided for the sound information is disregarded.
  • the mixing unit 12 causes the measurement information in such Area of the record carrier 13 can be stored outside the for the representation of the measurement object assigned area.
  • the for Representation of the area assigned to the measurement object d. H. the the Area of the recording medium 13 having image information usually smaller than the total memory area that is used to display a Picture on a monitor 19 is necessary.
  • This total storage area contains additionally lines that e.g. B. are provided for receiving control signals. There are also spaces or blank lines on the side, top and below the picture.
  • the measurement information is preferably above the Brought to display on the monitor 19. Alternatively, it is possible the measurement information laterally, d. H. right or left of which the measurement object representing image on the monitor 19.
  • the Mixing unit 12 ensures that the measurement information with the compressed image information can be combined that the falsification of the Measurement information by recording or later expanding the Image information is avoided.
  • the record carrier 13 is connected to a separation unit 18 which stored image and measurement information from the recording medium 13 reads out and separates the measurement information from the image information.
  • the Measurement information can subsequently easily in an evaluation unit 17 be further processed since they have been recorded in a data-readable form. Together with the mixing unit 12, this evaluation unit 17 forms the Record carrier 13, the separation unit 18 and a downstream Fade-in unit 20 a processing unit in which the image and Measurement information can be processed and evaluated separately.
  • the measurement information is separated in the Separation unit 18 without a pattern recognition or Character recognition process or a complex separation, for example must be applied with an image processing algorithm.
  • the Measurement information is available in a data-readable form and is stored in the Evaluation unit 17 compared with a predetermined comparison value, wherein if the comparison value is exceeded, an identifier is output that the operator assigns the measurement information to the Allows image information of the corresponding image sequence.
  • the comparison with a predefined setpoint can already be in the mixing unit 12 occur. If the setpoint is not exceeded, a corresponding one is used Identifier passed on to the record carrier 13.
  • the Measurement information is superimposed on the image containing the image information and then displayed on the monitor 19.
  • the display unit 20 may contain an expansion circuit that expands the compressed image information, before the measurement information is combined with the image information.
  • the device can be operated fully automatically.
  • the Video printer 24 controlled by the evaluation unit 17 such that only those Images are printed by the video printer 24, the measurement information in the Evaluation unit 17 have received an identifier.
  • the corresponding Measurement information is then in the fade-in unit 20 in the image sequence the corresponding image information is displayed and as an image on the Video printer 24 shown.
  • the video printer 24 prints the sequentially Images with the desired measurement information, so that they can be used for further Use available.
  • the image sequences of the measurement object successively stored in the memory 13, but only those image sequences are stored, their associated measurement information exceed a predetermined comparison value.
  • the second embodiment differs from the first in that that the sensor 10 is followed by a comparison circuit 21.
  • the Comparison circuit 21 includes the measurement information from sensor 10 a predetermined threshold value 22 compared.
  • Exceed the Measurement information of an image sequence has the threshold value 22, it becomes one of the forwarded corresponding mixing unit 12 according to the first exemplary embodiment, in which they are mixed in and then together with the image information of the corresponding image sequence stored in the record carrier 13 become.
  • the further evaluation and representation of the image and Measurement information is given in the same way as for the first Execution example.
  • the buffer store 23 consists of Storage elements that can read and read information at the same time. It is therefore sufficient that the buffer 23 has a storage capacity for one Has image sequence and the associated measurement information. If during the recording of the measurement object, it is determined that an image sequence in the Record carrier 13 is to be stored, the buffered image information from the buffer 23 sequentially fed to the mixing unit 12, while the Image information of the subsequent image sequence in the buffer 23 can be read. The image information is always along with the associated measurement information in the record carrier 13 saved.
  • the buffer store 23 can contain memory chips that can only read or read information. However, this requires that two sub-memories must be provided, each sub-memory the Storage capacity for an image sequence and the associated measurement information must have.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Recording Measured Values (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Holo Graphy (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

In particular when the speed of a measurement object is measured, it is important that the recorded image and measurement information may be quickly and easily evaluated. The measurement information supplied by a speed sensor (10) is recorded in data readable form together with image information supplied by a camera (11) in a storage area provided for that purpose on a storage medium (13). The measurement information can be easily read out of the storage area and separated from the image information for subsequent evaluation purposes.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Messung, Aufzeichnung und Wiedergabe von Meßinformationen eines Meßobjekts nach dem Oberbegriff des Anspruchs 1 bzw. des Anspruchs 8.The invention relates to a method and a device for measurement, Recording and playback of measurement information of a measurement object after the preamble of claim 1 and claim 8.

Aus der DE 43 26 398 C1 ist ein Verfahren zur Verkehrsüberwachung bekannt, bei dem die von einem Geschwindigkeitssensor ermittelten Meßinformationen synchron zu den von einer elektrooptischen Kamera gelieferten Bildinformationen auf einer Tonspur des Aufzeichnungsträgers in der elektrooptischen Kamera gespeichert werden. Auf diese Weise werden die Meß- und Bildinformationen auf getrennten Bereichen eines Videobandes, nämlich der Tonspur einerseits und der Bildspur andererseits, abgespeichert, damit die Daten unabhängig voneinander gezielt automatisch ausgewertet werden können. Nachteilig an dem Verfahren ist, daß zur Speicherung zwei physikalisch getrennte Bereiche eines Speichermediums, beispielsweise die Ton- und Bildspur eines Videobandes, benötigt werden.A method for traffic monitoring is known from DE 43 26 398 C1, in which the measurement information determined by a speed sensor in sync with those supplied by an electro-optical camera Image information on a soundtrack of the recording medium in the electro-optical camera can be saved. In this way, the Measurement and image information on separate areas of a video tape, namely the audio track on the one hand and the image track on the other hand, stored, so that the data is automatically evaluated independently of one another can be. A disadvantage of the method is that two physically separate areas of a storage medium, for example the Audio and video track of a video tape are required.

Es ist bekannt, die Meßinformationen vor dem Abspeichern auf einer Videospur in einer für Benutzer an einem Bildschirm lesbaren Form in das Video-Bild einzublenden. Hierdurch wird ein gemeinsamer Speicherbereich für die Geschwindigkeits-Meßinformationen und die Bildinformationen geschaffen. Nachteilig an diesem bekannten Verfahren ist jedoch, daß die Meßinformationen nur mit erheblichem Aufwand, beispielsweise mit einem Bildverarbeitungs-Algorithmus oder einem Zeichenerkennungs-Verfahren, aus dem Video-Bild zu separieren sind, um sie dann gezielt einer automatischen Auswertung zuzuführen. Ein solches Verfahren ist auch aus der US-A-4 922 339 bekannt. It is known to store the measurement information on a video track before it is stored in a form that can be read by the user on a screen in the video image fade in. This creates a common memory area for the Speed measurement information and the image information created. A disadvantage of this known method, however, is that the Measurement information only with considerable effort, for example with a Image processing algorithm or a character recognition method the video image must be separated so that they can be automatically targeted Supply evaluation. Such a method is also known from the US-A-4 922 339 is known.

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren und eine Vorrichtung zur Messung, Aufzeichnung und Wiedergabe von Meßinformationen zusammen mit den Bildinformationen eines Meßobjekts anzugeben, so daß die vollautomatische Auswertung der Meßinformationen erleichtert wird.The object of the present invention is therefore a method and a Device for measuring, recording and reproducing Measurement information together with the image information of a measurement object specify so that the fully automatic evaluation of the measurement information is facilitated.

Zur Lösung der Aufgabe weist die Erfindung die Merkmale der Patentansprüche 1 und 8 auf.To achieve the object, the invention has the features of Claims 1 and 8.

Mit der Erfindung wird insbesondere der Vorteil erzielt, daß eine einfache getrennte Meßsignalverarbeitung der Meßinformationen einerseits und der Bildinformationen andererseits ermöglicht wird. Dabei werden die einer Bildsequenz zugeordneten Meßinformationen zusammen mit den Bildinformationen der Bildsequenz in einem gemeinsamen Speicherbereich eines Aufzeichnungsträgers abgespeichert. Die Meßinformationen liegen in einer für die automatische Auswertung datenlesbaren Form vor, ohne daß sie in Bildpunkte bzw. Bildzeilen umgesetzt worden sind. Zur späteren Auswertung brauchen die Meßinformationen nur von den Bildinformationen abgetrennt und mit einem Vergleichswert verglichen werden, so daß bei Überschreiten des Vergleichswertes ein schneller Zugriff zu der entsprechenden Bildsequenz und das gemeinsame Darstellen von Bild- und Meßinformationen ermöglicht wird. Vorteilhaft wird eine getrennte Verarbeitung der Bildinformationen einerseits und der Meßinformationen andererseits bis zur Zusammenführung derselben in einer Einblendeeinheit gewährleistet.With the invention in particular the advantage is achieved that a simple separate measurement signal processing of the measurement information on the one hand and the Image information on the other hand is made possible. The one Image sequence assigned measurement information together with the Image information of the image sequence in a common memory area stored on a record carrier. The measurement information is in a form that can be read by data for the automatic evaluation, without it have been converted into pixels or image lines. For later evaluation only need the measurement information separated from the image information and be compared with a comparison value, so that when the A quick access to the corresponding image sequence and the common display of image and measurement information is made possible. Separate processing of the image information is advantageous on the one hand and the measurement information on the other hand until they are merged into a fade-in unit guaranteed.

Vorteilhafterweise werden die Meßinformationen zusammen mit den Bildinformationen z.B. auf einer Bildspur eines Magnetbandes abgespeichert, wobei die Meßinformationen jeweils nur einen Teil von einer oder mehreren Zeilen des bei der Bildabtastung entstehenden Halbbildes benötigen. Damit keine wesentlichen Bildinformationen über das mit einer Geschwindigkeitsmessung beaufschlagte Meßobjekt verloren gehen, wird nur ein Teilbereich des Bildes bzw. des Halbbildes für die Abspeicherung der Meßinformationen verwendet. Vorzugsweise ist ein Zeilenbereich für die Abspeicherung der Meßinformationen vorgesehen, der außerhalb des für den Betrachter auf dem Monitor sichtbaren Bildbereiches liegt.The measurement information is advantageously together with the Image information e.g. stored on an image track of a magnetic tape, wherein the measurement information is only part of one or more Lines of the field created during image scanning need. In order to no essential image information about that with a Velocity measurement applied object will only be lost a partial area of the image or the field for storing the Measurement information used. A line area is preferably for the Storage of the measurement information is provided, which is outside the for the Viewer lies on the monitor visible image area.

Nach einer Weiterbildung der Erfindung weist die elektrooptische Kamera einen Zwischenspeicher auf, in dem Bildinformationen einer Bildsequenz zwischengespeichert werden. Gleichzeitig werden die Meßinformationen in einer Vergleichsschaltung daraufhin überprüft, ob sie einen vorgegebenen Schwellwert übersteigen. Übersteigen die Meßinformationen einer Bildsequenz den vorgegebenen Schwellwert, werden die diesen zugeordneten Bildinformationen zusammen mit den Meßinformationen zur Endspeicherung einem Aufzeichnungsträger übertragen. Übersteigen die Meßinformationen dieser Bildsequenz nicht den Schwellwert, werden die zwischengespeicherten Bildinformationen nicht an den Aufzeichnungsträger weitergeleitet. Hierdurch wird ermöglicht, daß nur solche Bildinformationen in einem Aufzeichnungsträger abgespeichert werden, für die die Meßinformationen einen vorgegebenen Schwellwert überschreiten. Andere Bildinformationen, die für spätere Dokumentationszwecke nicht benötigt werden, werden dadurch erst gar nicht auf dem Aufzeichnungsträger abgespeichert.According to a development of the invention, the electro-optical camera has one Buffer in which image information of an image sequence be cached. At the same time, the measurement information is in a Comparison circuit then checked whether it was a predetermined Exceed threshold. Exceed the measurement information of an image sequence the predefined threshold value, they are assigned to them Image information together with the measurement information for final storage transferred to a record carrier. Exceed the measurement information this image sequence does not have the threshold value, the buffered Image information not forwarded to the recording medium. Hereby enables only such image information in a record carrier are stored for which the measurement information is a predetermined one Exceed threshold. Other image information for later This means that documentation purposes are not required at all stored on the record carrier.

Zwei Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert.Two embodiments of the invention are described below with reference to the Drawing explained in more detail.

Es zeigen:

Fig. 1
Eine Schaltungsanordnung der Erfindung nach einem ersten Ausführungsbeispiel,
Fig. 2
eine Schaltungsanordnung der Erfindung nach einem zweiten Ausführungsbeipiel.
Show it:
Fig. 1
A circuit arrangement of the invention according to a first embodiment,
Fig. 2
a circuit arrangement of the invention according to a second embodiment.

Zur Geschwindigkeitsmessung von bewegten Meßobjekten, insbesondere von Fahrzeugen, werden einerseits (Geschwindigkeits-)Meßinformationen von einem Geschwindigkeitssensor 10 und andererseits Bildinformationen über das bewegte Meßobjekt von einer elektrooptischen Kamera 11 ermittelt. Die elektrooptische Kamera 11 kann als eine Videokamera oder als ein Teil eines Camcorders ausgebildet sein. Hierbei ruhen der Geschwindigkeitssensor und die elektrooptische Kamera und nur das nicht dargestellte Meßobjekt bewegt sich.For measuring the speed of moving objects, in particular Vehicles, on the one hand, (speed) measurement information from a speed sensor 10 and on the other hand image information about the moving measurement object determined by an electro-optical camera 11. The electro-optical camera 11 can be used as a video camera or as part of one Camcorders be trained. The speed sensor and the electro-optical camera and only the object not shown moves yourself.

Nach einem ersten Ausführungsbeispiel ist eine Einmischeinheit 12 der elektrooptischen Kamera 11 und dem Sensor 10 nachgeordnet und dient dazu, die von dem Sensor 10 ausgegebenen Meßinformationen in datenlesbarer Form zusammen mit den das Meßobjekt wiedergebenden Bildinformationen zu kombinieren und in einen für jede Aufnahme des Meßobjekts (Bildsequenz) vorgesehenen Speicherbereich eines Aufzeichnungsträgers 13 abzuspeichem. Dazu werden die Meßinformationen codiert und dann in die einzelnen Halbbilder der Bildinformationen eingemischt.According to a first embodiment, a mixing unit 12 is the downstream of the electro-optical camera 11 and the sensor 10 and serves to the measurement information output by the sensor 10 in a data-readable form together with the image information representing the measurement object combine and in one for each exposure of the measurement object (image sequence) to store the intended memory area of a record carrier 13. For this purpose, the measurement information is encoded and then in the individual fields of the image information mixed in.

Der Aufzeichnungsträger 13 kann als digitaler Speicher oder als analoger Speicher ausgebildet sein. Vorzugsweise ist der Aufzeichnungsträger 13 als Magnetband ausgebildet und ist integraler Bestandteil der elektrooptischen Kamera 11. Erfindungsgemäß werden die Geschwindigkeits-Meßinformationen zusammen mit den Bildinformationen jeweils in den für die Bildinformationen vorgesehenen Bereich abgespeichert, wobei ein eventuell vorhandener und für die Toninformationen vorgesehener Bereich unberücksichtigt bleibt.The record carrier 13 can be a digital memory or an analog one Be trained. The record carrier 13 is preferably as Magnetic tape is formed and is an integral part of the electro-optical Camera 11. According to the speed measurement information together with the image information in each case for the image information intended area is saved, with a possibly existing and for the area provided for the sound information is disregarded.

Die Einmischeinheit 12 bewirkt, daß die Meßinformationen in einem solchen Bereich des Aufzeichnungsträgers 13 abgespeichert werden, der außerhalb des zur Darstellung des Meßobjekts zugeordneten Bereichs liegt. Der zur Darstellung des Meßobjekts zugeordnete Bereich, d. h. der die Bildinformationen aufweisende Bereich des Aufzeichnungsträgers 13 ist üblicherweise kleiner als der Gesamtspeicherbereich, der zur Darstellung eines Bildes auf einem Monitor 19 nötig ist. Dieser Gesamtspeicherbereich enthält zusätzlich Zeilen, die z. B. zur Aufnahme von Steuersignalen vorgesehen sind. Daneben gibt es auch Leerzeichen bzw. Leerzeilen seitlich sowie ober- und unterhalb des Bildes. Vorzugsweise werden die Meßinformationen oberhalb des Bildes zur Darstellung auf dem Monitor 19 gebracht. Altemativ ist es möglich, die Meßinformationen seitlich, d. h. rechts oder links von dem das Meßobjekt darstellenden Bild auf dem Monitor 19 darzustellen.The mixing unit 12 causes the measurement information in such Area of the record carrier 13 can be stored outside the for the representation of the measurement object assigned area. The for Representation of the area assigned to the measurement object, d. H. the the Area of the recording medium 13 having image information usually smaller than the total memory area that is used to display a Picture on a monitor 19 is necessary. This total storage area contains additionally lines that e.g. B. are provided for receiving control signals. There are also spaces or blank lines on the side, top and below the picture. The measurement information is preferably above the Brought to display on the monitor 19. Alternatively, it is possible the measurement information laterally, d. H. right or left of which the measurement object representing image on the monitor 19.

Bevor die Bildinformationen zusammen mit den Meßinformationen abgespeichert werden, kann eine Datenkomprimierung der Bildinformationen erfolgen, so daß der Speicherbedarf der Bildinformationen verringert ist. Die Einmischeinheit 12 sorgt dafür, daß die Meßinformationen derart mit den komprimierten Bildinformationen kombiniert werden, daß das Verfälschen der Meßinformationen durch Aufzeichnung oder spätere Expansion der Bildinformationen vermieden wird.Before the image information together with the measurement information can be stored, a data compression of the image information take place so that the storage requirement of the image information is reduced. The Mixing unit 12 ensures that the measurement information with the compressed image information can be combined that the falsification of the Measurement information by recording or later expanding the Image information is avoided.

Der Aufzeichnungsträger 13 ist mit einer Abtrenneinheit 18 verbunden, die die gespeicherten Bild- und Meßinformationen von dem Aufzeichnungsträger 13 herausliest und die Meßinformationen von den Bildinformationen trennt. Die Meßinformationen können nachfolgend in einer Auswerteeinheit 17 leicht weiterverarbeitet werden, da sie in datenlesbarer Form aufgezeichnet wurden. Diese Auswerteeinheit 17 bildet zusammen mit der Einmischeinheit 12, dem Aufzeichnungsträger 13, der Abtrenneinheit 18 und einer nachgeschalteten Einblendeeinheit 20 eine Verarbeitungseinheit, in der die Bild- und Meßinformationen getrennt verarbeitet und ausgewertet werden. Erfindungsgemäß erfolgt die Trennung der Meßinformationen in der Abtrenneinheit 18, ohne daß ein Mustererkennungs- oder Zeichenerkennungsverfahren bzw. eine aufwendige Separierung beispielsweise mit einem Bildverarbeitungs-Algorithmus angewendet werden muß. Die Meßinformationen liegen in datenlesbarer Form vor und werden in der Auswerteeinheit 17 mit einem vorgegebenen Vergleichswert verglichen, wobei bei Überschreitung des Vergleichswertes eine Kennung ausgegeben wird, die der Bedienperson die Zuordnung der Meßinformationen zu den Bildinformationen der entsprechenden Bildsequenz ermöglicht. Der Vergleich mit einem vorgegebenen Sollwert kann auch bereits in der Einmischeinheit 12 stattfinden. Wird der Sollwert nicht überschritten, so wird eine entsprechende Kennung an den Aufzeichnungsträger 13 weitergegeben.The record carrier 13 is connected to a separation unit 18 which stored image and measurement information from the recording medium 13 reads out and separates the measurement information from the image information. The Measurement information can subsequently easily in an evaluation unit 17 be further processed since they have been recorded in a data-readable form. Together with the mixing unit 12, this evaluation unit 17 forms the Record carrier 13, the separation unit 18 and a downstream Fade-in unit 20 a processing unit in which the image and Measurement information can be processed and evaluated separately. According to the invention, the measurement information is separated in the Separation unit 18 without a pattern recognition or Character recognition process or a complex separation, for example must be applied with an image processing algorithm. The Measurement information is available in a data-readable form and is stored in the Evaluation unit 17 compared with a predetermined comparison value, wherein if the comparison value is exceeded, an identifier is output that the operator assigns the measurement information to the Allows image information of the corresponding image sequence. The comparison with a predefined setpoint can already be in the mixing unit 12 occur. If the setpoint is not exceeded, a corresponding one is used Identifier passed on to the record carrier 13.

In einer halbautomatischen Betriebsweise der Vorrichtung kann eine Bedienperson die mit einer Kennung versehenen Meßinformationen zusammen mit den dazugehörigen Bildinformationen auf dem Monitor 19 abrufen. Der Monitor 19 ist Teil einer Dokumentationseinheit, die neben dem Monitor 19 einen Videoprinter 24 zur Dokumentation des Meßergebnisses aufweisen kann. Dazu werden die entsprechenden Meßinformationen von der Auswerteeinheit 17 einer Einblendeeinheit 20 zugeleitet. In dieser erfolgt die Umwandlung der Meßinformationen von der datenlesbaren Form in eine personenlesbare Form, so daß bei der Darstellung der Meßinformationen auf dem Monitor 19 diese von der Bedienperson gelesen werden können. Weiterhin werden die Meßinformationen in das die Bildinformationen enthaltende Bild eingeblendet und dann auf dem Monitor 19 dargestellt. Die Einblendeeinheit 20 enthält ggf. eine Expansionsschaltung, die die komprimierten Bildinformationen expandiert, bevor die Meßinformationen mit den Bildinformationen kombiniert werden.In a semi-automatic mode of operation of the device, one Operator together the measurement information provided with an identifier with the associated image information on monitor 19. Of the Monitor 19 is part of a documentation unit which, in addition to monitor 19 can have a video printer 24 for documenting the measurement result. For this purpose, the corresponding measurement information from the evaluation unit 17 fed to a display unit 20. This is where the conversion of the Measurement information from the data-readable form to a person-readable form, so that when the measurement information is displayed on the monitor 19, the operator can be read. Furthermore, the Measurement information is superimposed on the image containing the image information and then displayed on the monitor 19. The display unit 20 may contain an expansion circuit that expands the compressed image information, before the measurement information is combined with the image information.

Alternativ kann die Vorrichtung vollautomatisch betrieben werden. Dazu wird der Videoprinter 24 von der Auswerteeinheit 17 derart gesteuert, daß nur diejenigen Bilder von dem Videoprinter 24 gedruckt werden, deren Meßinformationen in der Auswerteeinheit 17 eine Kennung erhalten haben. Die entsprechenden Meßinformationen werden dann in der Einblendeeinheit 20 in die Bildsequenz der korrespondierenden Bildinformationen eingeblendet und als Bild auf dem Videoprinter 24 dargestellt. Der Videoprinter 24 druckt aufeinanderfolgend die Bilder mit den gesuchten Meßinformationen aus, so daß sie zur weiteren Verwendung vorliegen.Alternatively, the device can be operated fully automatically. For this the Video printer 24 controlled by the evaluation unit 17 such that only those Images are printed by the video printer 24, the measurement information in the Evaluation unit 17 have received an identifier. The corresponding Measurement information is then in the fade-in unit 20 in the image sequence the corresponding image information is displayed and as an image on the Video printer 24 shown. The video printer 24 prints the sequentially Images with the desired measurement information, so that they can be used for further Use available.

Nach einem zweiten Ausführungsbeipiel gemäß Fig.2 werden nicht, wie bei dem ersten Ausführungsbeispiel, die Bildsequenzen des Meßobjekts aufeinanderfolgend in dem Speicher 13 abgespeichert, sondem es werden nur diejenigen Bildsequenzen abgespeichert, deren zugeordnete Meßinformationen einen vorgegebenen Vergleichswert überschreiten.According to a second exemplary embodiment according to FIG. 2, as in the case of first embodiment, the image sequences of the measurement object successively stored in the memory 13, but only those image sequences are stored, their associated measurement information exceed a predetermined comparison value.

Im folgenden werden die mit dem ersten Ausführungsbeispiel übereinstimmenden Bausteine mit den gleichen Bezugsziffern versehen.The following are those with the first embodiment matching blocks with the same reference numerals.

Das zweite Ausführungsbeispiel unterscheidet sich von dem ersten dadurch, daß dem Sensor 10 eine Vergleichsschaltung 21 nachgeordnet ist. In der Vergleichsschaltung 21 werden die Meßinformationen des Sensors 10 mit einem vorgegebenen Schwellwert 22 verglichen. Überschreiten die Meßinformationen einer Bildsequenz den Schwellwert 22, werden sie einer dem ersten Ausführungsbeispiel entsprechenden Einmischeinheit 12 weitergeleitet, in der sie eingemischt und dann zusammen mit den Bildinformationen der entsprechenden Bildsequenz in dem Aufzeichnungsträger 13 abgespeichert werden. Die weitere Auswertung und Darstellung der Bild- und Meßinformationen erfolgt in gleicher Weise wie bei dem ersten Ausführungsbeipiel.The second embodiment differs from the first in that that the sensor 10 is followed by a comparison circuit 21. In the Comparison circuit 21 includes the measurement information from sensor 10 a predetermined threshold value 22 compared. Exceed the Measurement information of an image sequence has the threshold value 22, it becomes one of the forwarded corresponding mixing unit 12 according to the first exemplary embodiment, in which they are mixed in and then together with the image information of the corresponding image sequence stored in the record carrier 13 become. The further evaluation and representation of the image and Measurement information is given in the same way as for the first Execution example.

Zwischen der Kamera 11 und der Einmischeinheit 12 ist zusätzlich ein Zwischenspeicher 23 angeordnet, der zur Zwischenspeicherung der Bildinformationen dient. Der Zwischenspeicher 23 besteht aus Speicherelementen, die gleichzeitig Informationen ein- und auslesen können. Es reicht daher aus, daß der Zwischenspeicher 23 eine Speicherkapazität für eine Bildsequenz und die zugehörigen Meßinformationen aufweist. Wenn während der Aufnahme des Meßobjekts festgestellt wird, daß eine Bildsequenz in dem Aufzeichnungsträger 13 abgespeichert werden soll, werden die zwischengespeicherten Bildinformationen von dem Zwischenspeicher 23 sequentiell der Einmischeinheit 12 zugeführt, während gleichzeitig die Bildinformationen der nachfolgenden Bildsequenz in den Zwischenspeicher 23 eingelesen werden können. Die Bildinformationen werden immer zusammen mit den zugehörigen Meßinformationen in dem Aufzeichnungsträger 13 abgespeichert. There is an additional one between the camera 11 and the mixing unit 12 Intermediate memory 23 arranged for the intermediate storage of the Image information is used. The buffer store 23 consists of Storage elements that can read and read information at the same time. It is therefore sufficient that the buffer 23 has a storage capacity for one Has image sequence and the associated measurement information. If during the recording of the measurement object, it is determined that an image sequence in the Record carrier 13 is to be stored, the buffered image information from the buffer 23 sequentially fed to the mixing unit 12, while the Image information of the subsequent image sequence in the buffer 23 can be read. The image information is always along with the associated measurement information in the record carrier 13 saved.

Überschreiten die Meßinformationen einer Bildsequenz nicht den vorgegebenen Schwellwert 22, werden die in dem Zwischenspeicher 23 gerade zwischengespeicherten Informationen nicht zu dem Aufzeichnungsträger 13 weitergeleitet, so daß keine Speicherung erfolgt.If the measurement information of an image sequence does not exceed the specified one Threshold 22, those in the buffer 23 become straight cached information not to the record carrier 13 forwarded so that no storage takes place.

Alternativ kann der Zwischenspeicher 23 Speicherbausteine enthalten, die entweder nur Informationen ein- oder auslesen können. Dies erfordert jedoch, daß zwei Teilspeicher vorgesehen werden müssen, wobei jeder Teilspeicher die Speicherkapazität für eine Bildsequenz und die zugehörigen Meßinformationen aufweisen muß.Alternatively, the buffer store 23 can contain memory chips that can only read or read information. However, this requires that two sub-memories must be provided, each sub-memory the Storage capacity for an image sequence and the associated measurement information must have.

Claims (12)

  1. Method for measuring, recording and reproducing measurement information of a measurement object, in particular the speed of a measurement object, the measurement information determined by a speed sensor (10) and the image information received in an electrooptic camera (11) via the measurement object being stored on a recording carrier (13), characterized in that the measurement information belonging to an image sequence are written in a data-readable fashion as a bit sequence directly into the image information at preselectable points by means of a mixing unit (12), the bit sequence as such being stored in one or more pixels of the image information.
  2. Method according to Claim 1, characterized in that the measurement information is coded.
  3. Method according to Claim 1 or 2, characterized in that the stored measurement information are separated in a separation unit (18) from the image information, the measurement information being checked for their information content in a downstream evaluation unit (17) and subsequently blended in a blending unit (20) into the image sequence having the corresponding image information, with the result that the measurement information can be represented as part of an image in human-readable form.
  4. Method according to one or more of Claims 1 to 3, characterized in that the measurement information is stored in those pixels of the image information which are situated outside the pixel region assigned to the representation of the measurement object.
  5. Method according to one or more of Claims 1 to 4, characterized in that the data having the image information are compressed and then stored together with the measurement information on the recording carrier (13).
  6. Method according to one or more of Claims 1 to 5, characterized in that the image information of an image sequence is buffered in an intermediate memory (23), while the measurement information belonging to said image sequence is compared with a threshold value (22), and the measurement information is stored in a recording carrier (13) together with the image information of the associated image sequence only upon overshooting of the threshold value (22).
  7. Method according to one or more of Claims 1 to 6, characterized in that an image composed in a documentation unit (video printer 24, monitor 19) from the measurement information and the image information is output automatically when the measurement information assigned to an image sequence overshoots a prescribed comparison value.
  8. Device for measuring, recording and reproducing measurement information of a measurement object, in particular the speed of a measurement object, having a speed sensor (10), an electrooptic camera (11), a processing unit (mixing unit 12, recording carrier 13, separation unit 18, evaluation unit 17, blending unit 20) and a documentation unit (monitor 19, video printer 24) characterized in that a memory area of a recording carrier (13) is provided for the image information output by the electrooptic camera (11), the data-readable measurement information output by the speed sensor (10) and present as a bit sequence being stored directly in a pixel or in a plurality of pixels of the image information at preselectable points with the aid of the mixing unit (12).
  9. Device according to Claim 8, characterized in that an evaluation unit (19) is provided in which the measurement information is checked for overshooting a prescribed comparison value, and upon overshooting of the same is fed to a blending unit (20) for blending the measurement information into the image sequence having the corresponding image information, the data-readable measurement information being converted into human-readable measurement information for the purpose of representation in the documentation unit (monitor 19, video printer 24).
  10. Device according to Claim 8 or 9, characterized in that the electrooptic camera (11) has an intermediate memory (23) for buffering the image information of at least one image sequence in such a way that the image information is transmitted together with the associated measurement information to a further memory (recording carrier 13) for final storage only when the measurement information assigned to said image sequence overshoots a prescribed threshold value (22).
  11. Device according to Claim 10, characterized in that the intermediate memory (23) comprises a plurality of field memories into which image information is respectively read in and out simultaneously together with the associated measurement information.
  12. Device according to Claim 10 or 11, characterized in that the intermediate memory (23) comprises two partial memories, each partial memory having the memory capacity for an image sequence together with the associated measurement information in such a way that the memory contents of one partial memory are read out upon overshooting of the threshold value (22) and stored in the recording carrier (13), while the subsequent image sequence is buffered in the other partial memory.
EP96901700A 1995-03-09 1996-02-06 Process and device for measuring, recording and reproducing measurement information on a measured object Expired - Lifetime EP0813727B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19508338A DE19508338A1 (en) 1995-03-09 1995-03-09 Method and device for measuring, recording and reproducing measurement information of a measurement object
DE19508338 1995-03-09
PCT/DE1996/000177 WO1996028801A1 (en) 1995-03-09 1996-02-06 Process and device for measuring, recording and reproducing measurement information on a measured object

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EP0813727A1 EP0813727A1 (en) 1997-12-29
EP0813727B1 true EP0813727B1 (en) 1999-06-16

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EP96901700A Expired - Lifetime EP0813727B1 (en) 1995-03-09 1996-02-06 Process and device for measuring, recording and reproducing measurement information on a measured object

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EP (1) EP0813727B1 (en)
AT (1) ATE181439T1 (en)
AU (1) AU4618496A (en)
DE (2) DE19508338A1 (en)
ES (1) ES2135205T3 (en)
WO (1) WO1996028801A1 (en)

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DE19800482B4 (en) * 1998-01-09 2008-05-21 Wiesemann & Theis Gmbh gauge
DE19844803A1 (en) * 1998-09-30 2000-04-13 Deutsche Telekom Ag Radar-controlled traffic monitoring and control
US6696978B2 (en) 2001-06-12 2004-02-24 Koninklijke Philips Electronics N.V. Combined laser/radar-video speed violation detector for law enforcement

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DE3327706A1 (en) * 1983-08-01 1985-02-21 Egbert Dipl.-Ing. 7500 Karlsruhe Rapp Method and devices for automatically determining the speed and identity of vehicles which are closely following one another
US4922339A (en) * 1988-03-31 1990-05-01 Stout Video Systems Means and method for visual surveillance and documentation
AT398011B (en) * 1989-06-08 1994-08-25 Alcatel Austria Ag DEVICE FOR MONITORING SPEED LIMITS OF TRAFFIC PARTICIPANTS
GB2266398A (en) * 1992-04-16 1993-10-27 Traffic Technology Limited Vehicle monitoring apparatus
NL9300671A (en) * 1993-04-20 1994-11-16 Gatsometer Bv Method and device for electronically recording an event, for example a traffic violation.
DE4326398C1 (en) * 1993-08-06 1994-07-21 Leica Sensortechnik Gmbh Traffic monitoring method and device

Also Published As

Publication number Publication date
EP0813727A1 (en) 1997-12-29
WO1996028801A1 (en) 1996-09-19
ATE181439T1 (en) 1999-07-15
AU4618496A (en) 1996-10-02
DE19508338A1 (en) 1996-09-12
ES2135205T3 (en) 1999-10-16
DE59602243D1 (en) 1999-07-22

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