EP0813727A1 - 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 objectInfo
- Publication number
- EP0813727A1 EP0813727A1 EP96901700A EP96901700A EP0813727A1 EP 0813727 A1 EP0813727 A1 EP 0813727A1 EP 96901700 A EP96901700 A EP 96901700A EP 96901700 A EP96901700 A EP 96901700A EP 0813727 A1 EP0813727 A1 EP 0813727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measurement information
- information
- image
- measurement
- unit
- 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.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims description 16
- 238000011156 evaluation Methods 0.000 claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 15
- 230000015654 memory Effects 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 238000001454 recorded image Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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 measuring, recording and reproducing measurement information of a measurement object according to the preamble of claim 1 or of claim 8 and of claim 10.
- a method for traffic monitoring is known from DE 43 26 398 C1, in which the measurement information determined by a speed sensor is stored in a synchronous manner with the image information supplied by an electro-optical camera on a sound track of the recording medium in the electro-optical camera.
- the measurement and image information is stored on separate areas of a video tape, namely the audio track on the one hand and the image track on the other hand, so that the data can be automatically evaluated independently of one another.
- 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 for storage.
- the object of the present invention is therefore to provide a method and a device for measuring, recording and reproducing measurement information together with the image information of a measurement object, so that the fully automatic evaluation of the measurement information is facilitated.
- the advantage of the invention is in particular that 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 measurement information associated with an image sequence is combined with the
- Image information of the image sequence is stored in a common memory area of a recording medium.
- the measurement information is available in a data-readable form for automatic evaluation without being converted into pixels or image lines.
- the measurement information need only be separated from the image information and compared with a comparison value, so that if the comparison value is exceeded, 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, on the one hand, and the measurement information, on the other hand, is advantageously ensured until they are combined in a display unit.
- the measurement information is stored together with the image information, for example on an image track of a magnetic tape, the measurement information in each case only requiring part of one or more lines of the field created during image scanning. So that no essential image information about the measurement object loaded with a speed measurement is lost, only a partial area of the image or field is used for storing the measurement information.
- a line area is preferably for the Storage of the measurement information is provided, which lies outside the image area visible to the viewer on the monitor.
- the electro-optical camera has an intermediate memory in which image information of an image sequence is temporarily stored.
- the measurement information is checked in a comparison circuit to determine whether it exceeds a predetermined threshold value. If the measurement information of an image sequence exceeds the predetermined threshold value, the image information assigned to it is transmitted to a recording medium together with the measurement information for final storage. If the measurement information of this image sequence does not exceed the threshold value, the temporarily stored image information is not forwarded to the recording medium. This enables only image information for which the measurement information exceeds a predefined threshold value to be stored in a recording medium. Other image information for later
- FIG. 1 is a circuit arrangement of the invention according to a first embodiment
- Fig. 2 shows a circuit arrangement of the invention according to a second exemplary embodiment.
- the electro-optical camera 11 can be designed as a video camera or as part of a camcorder. The speed sensor and the electro-optical camera and only the measurement object (not shown) are at rest
- a mixing unit 12 is arranged downstream of the electro-optical camera 11 and the sensor 10 and serves to combine the measurement information output by the sensor 10 in a data-readable form together with the image information representing the measurement object and in one for each recording of the measurement object (image sequence ) to store the intended memory area of a recording medium 13.
- the measurement information is encoded and then mixed into the individual fields of the image information
- the recording medium 13 can be designed as a digital memory or as an analog memory.
- the recording medium 13 is preferably designed as a magnetic tape and is an integral part of the electro-optical camera 11. According to the invention, the speed measurement information is stored together with the image information in the area provided for the image information, whereby a possibly existing area intended for the sound information is disregarded
- the mixing unit 12 causes the measurement information to be stored in such an area of the recording medium 13 which lies outside the area assigned to the display of the measurement object.
- the area assigned to the display of the measurement object ie the area of the recording medium 13 containing the image information, is usually smaller than that Total memory area which is necessary for displaying an image on a monitor 19.
- This total memory area additionally contains lines which are provided, for example, for recording control signals. In addition, there are also spaces or empty lines on the side and top and below the picture.
- the measurement information above the image is preferably displayed on the monitor 19. Alternatively, it is possible to display the measurement information on the monitor 19 to the side, ie to the right or left of the image representing the measurement object.
- the image information Before the image information is stored together with the measurement information, the image information can be compressed, so that the storage requirement of the image information is reduced.
- the mixing unit 12 ensures that the measurement information is combined with the compressed image information in such a way that the measurement information is not falsified by recording or later expansion of the image information.
- the record carrier 13 is connected to a separation unit 18, which reads out the stored image and measurement information from the record carrier 13 and separates the measurement information from the image information.
- the measurement information can subsequently be easily further processed in an evaluation unit 17 since it has been recorded in a data-readable form.
- the measurement information is separated in the separation unit 18 without having to use a pattern recognition or character recognition method or an expensive separation, for example 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, an identifier being output when the comparison value is exceeded, which enables the operator to assign the measurement information to the image information of the corresponding image sequence.
- the comparison with a predefined setpoint value can also already take place in the mixing unit 12 occur. If the target value is not exceeded, a corresponding identifier is passed on to the recording medium 13.
- an operator can call up the measurement information provided with an identifier together with the associated image information on the monitor 19.
- the monitor 19 is part of a documentation unit which, in addition to the monitor 19, can have a video printer 24 for documenting the measurement result.
- the corresponding measurement information is fed from the evaluation unit 17 to a display unit 20.
- This converts the measurement information from the data-readable form into a person-readable form, so that when the measurement information is displayed on the monitor 19, it can be read by the operator.
- the measurement information is superimposed on the image containing the image information and then displayed on the monitor 19.
- the fade-in unit 20 optionally contains an expansion circuit which 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 is controlled by the evaluation unit 17 such that only those images are printed by the video printer 24 whose measurement information has received an identifier in the evaluation unit 17.
- Measurement information is then superimposed on the image sequence of the corresponding image information in the insertion unit 20 and displayed as an image on the video printer 24.
- the video printer 24 sequentially prints out the images with the measurement information sought, so that they are available for further use.
- the image sequences of the measurement object are not stored successively in the memory 13, as in the first embodiment, but only those image sequences are stored whose associated measurement information exceeds a predetermined comparison value.
- the second exemplary embodiment differs from the first in that a comparison circuit 21 is arranged downstream of the sensor 10.
- the comparison circuit 21 the measurement information from the sensor 10 is compared with a predetermined threshold value 22. If the measurement information of an image sequence exceeds the threshold value 22, it is forwarded to a mixing unit 12 corresponding to the first exemplary embodiment, in which it is mixed in and then stored in the recording medium 13 together with the image information of the corresponding image sequence.
- the further evaluation and display of the image and measurement information is carried out in the same way as in the first exemplary embodiment.
- the buffer store 23 consists of storage elements which can simultaneously read in and read out information. It is therefore sufficient for the buffer store 23 to have a storage capacity for an image sequence and the associated measurement information. If it is determined during the recording of the measurement object that an image sequence is to be stored in the recording medium 13, the temporarily stored image information from the intermediate memory 23 is sequentially fed to the mixing unit 12, while at the same time the
- Image information of the subsequent image sequence can be read into the buffer 23.
- the image information is always stored together with the associated measurement information in the recording medium 13. If the measurement information of an image sequence does not exceed the predetermined threshold value 22, the information just buffered in the buffer 23 is not forwarded to the recording medium 13, so that no storage takes place.
- the buffer store 23 can contain memory modules which can either only read in or read out information.
- this requires that two partial memories have to be provided, each partial memory having to have the storage capacity for an image sequence and the associated measurement information.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Television Signal Processing For Recording (AREA)
- Holo Graphy (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Recording Measured Values (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19508338 | 1995-03-09 | ||
DE19508338A DE19508338A1 (en) | 1995-03-09 | 1995-03-09 | Method and device for measuring, recording and reproducing measurement information of a measurement object |
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0813727A1 true EP0813727A1 (en) | 1997-12-29 |
EP0813727B1 EP0813727B1 (en) | 1999-06-16 |
Family
ID=7756111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0813727B1 (en) |
AT (1) | ATE181439T1 (en) |
AU (1) | AU4618496A (en) |
DE (2) | DE19508338A1 (en) |
ES (1) | ES2135205T3 (en) |
WO (1) | WO1996028801A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102017008116B4 (en) | 2017-08-25 | 2021-06-17 | Michael Preker | Method and device for conclusive detection of traffic violations of a vehicle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
1995
- 1995-03-09 DE DE19508338A patent/DE19508338A1/en not_active Ceased
-
1996
- 1996-02-06 DE DE59602243T patent/DE59602243D1/en not_active Expired - Fee Related
- 1996-02-06 WO PCT/DE1996/000177 patent/WO1996028801A1/en active IP Right Grant
- 1996-02-06 ES ES96901700T patent/ES2135205T3/en not_active Expired - Lifetime
- 1996-02-06 AU AU46184/96A patent/AU4618496A/en not_active Abandoned
- 1996-02-06 EP EP96901700A patent/EP0813727B1/en not_active Expired - Lifetime
- 1996-02-06 AT AT96901700T patent/ATE181439T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9628801A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19508338A1 (en) | 1996-09-12 |
EP0813727B1 (en) | 1999-06-16 |
ES2135205T3 (en) | 1999-10-16 |
WO1996028801A1 (en) | 1996-09-19 |
AU4618496A (en) | 1996-10-02 |
ATE181439T1 (en) | 1999-07-15 |
DE59602243D1 (en) | 1999-07-22 |
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