WO2002021473A2 - Device for surveilling an area in a room - Google Patents
Device for surveilling an area in a room Download PDFInfo
- Publication number
- WO2002021473A2 WO2002021473A2 PCT/EP2001/010295 EP0110295W WO0221473A2 WO 2002021473 A2 WO2002021473 A2 WO 2002021473A2 EP 0110295 W EP0110295 W EP 0110295W WO 0221473 A2 WO0221473 A2 WO 0221473A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- area
- image
- monitored
- images
- recorded
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/04—Systems determining the presence of a target
Definitions
- the present invention relates to a device for monitoring an area, having an image-receiving means, in particular a sensor array in the form of a flat imaging sensor, and an emitting means emitting electromagnetic waves for illuminating a space to be acquired by means of the image-receiving means, the emitting means being electromagnetic Waves are emitted in a pulsed manner and the image-receiving means imprints an image in a specific time window after the electromagnetic waves have been emitted by the transmitting means.
- an image-receiving means in particular a sensor array in the form of a flat imaging sensor
- an emitting means emitting electromagnetic waves for illuminating a space to be acquired by means of the image-receiving means, the emitting means being electromagnetic Waves are emitted in a pulsed manner and the image-receiving means imprints an image in a specific time window after the electromagnetic waves have been emitted by the transmitting means.
- BESTATIGUNGSKOPIE eg detach light barriers and motion detectors. Difficulties arise especially when a dynamic area is to be monitored and / or a three-dimensional area monitoring is to be implemented.
- the object of the present invention is to provide a device for recording and / or monitoring, in particular a three-dimensional space.
- CMOS array is advantageously used as an imaging sensor. Distortions caused by the wide-angle optics can advantageously be compensated for by image processing.
- a sensor array in particular a CCD sensor, can be used as the image-receiving means.
- the integration time determines the vertical extent, i.e. the thickness of each cutting plane.
- Different sectional planes of the real space can advantageously be recorded one after the other by means of the device.
- the comparison of two images taken one after the other can be carried out, for example, by means of image processing by so-called difference image analysis. In particular, differences in the gray values of the images are examined.
- an alarm signal can be triggered, for example.
- other image processing methods can also be used to evaluate the image information obtained.
- three-dimensional objects can be recognized in particular by recording images of several sectional planes within one period and by comparing the images.
- the device can, for example, trigger an alarm or another event when certain objects are detected that are not allowed to be in the area to be monitored.
- the device monitors the status of a system and recognizes it when liquids and gases escape and likewise initiates suitable measures for alarming and / or problem solving.
- the device automatically starts a certain process after an object enters the area to be monitored.
- an air conditioning system, music system, etc. can be switched on when a person enters richly.
- the device can also be used advantageously, for example, to monitor ATMs or rooms.
- Fixed objects are automatically recognized by the constant comparison of the images, which means that the system gets to know the room through constant comparison and can therefore decide whether new objects have been added to the room.
- they can also be recognized and possibly classified based on their outlines or other identifying features.
- Markings which are arranged either in one plane or in different spatial planes or sectional planes can advantageously be used to delimit the region, as a result of which either a two-dimensional or three-dimensional region can be defined.
- the markings are automatically recognized by the system on the basis of their reflection characteristics and / or contours.
- a corresponding event such as an alarm
- a corresponding event such as an alarm, can be triggered.
- the room is illuminated by a radiation source, which emits electromagnetic waves in the non-visible area, so that on the one hand disturbances due to fluctuations in daylight are reduced and on the other hand the area cannot be monitored with the naked eye.
- FIG. 1 shows the basic mode of operation of the device according to claim 1, in which the surroundings or the area to be monitored is illuminated with a light pulse of short duration.
- sectional planes Ei, E 2 , E 3 and E 4 can be viewed in a targeted manner.
- the integration time that is to say the time in which the imaging points of the sensor array are charged by incident light, thus determines the vertical extent, that is to say the height h of the planes Ei to E 4 .
- the illuminant emits a short light pulse of a certain duration.
- the illuminated cutting plane is switched on by sensor S for a short period of time (integration time) added.
- the duration of the integration time starting with the time T 2 determines the thickness hi of the cut plane Ei.
- the sectional plane E 2 is monitored by the lamp L emitting a short light pulse at time T 3 and the sensor S being exposed for a short time starting at time T 4 , for example by opening the diaphragm or controlling the sensor accordingly.
- the levels E 3 and E 4 can be recorded accordingly.
- the cutting plane and its thickness are determined. So it is possible that the cutting planes partially overlap or exactly adjoin each other or that certain cutting planes of the room are not included.
- the area 1 to be monitored is identified by means of markings 2. Fixed objects are eliminated by the difference value formation (gray value difference). In contrast, the person P, who was not in the area 1 to be monitored in the image B1, is recognized when the difference value is formed. This is shown with the difference value image G and the person P ⁇ shown in broken lines. Due to the difference formation, objects 0 no longer exist in image G. The area 1 to be monitored is delimited by the markings 2. Due to the overlapping of the images, the device knows from the image Bi or B 2 , where the limits of the area 1 to be monitored are located. The area marker 2 is shown in Figure G only for clarity. When calculating the difference value, however, it is removed so that it would actually no longer exist in image G.
- punctiform markings 3 are only arranged in the corners of the region (polygon) to be monitored as desired. From this, the data processing system of the device calculates the area 1 to be monitored.
- the area markings shown in FIGS. 2 to 4 can also be used for the individual sectional planes Ei to E 4 , that is to say that a plurality of markings in the room can be arranged one above the other in the room, thereby forming an arbitrarily shaped one Area can be defined and monitored. Differently marked or shaped markings for different cutting planes can ensure that markings lying one above the other are reliably recognized. For example, it is also possible to provide markings which are arranged on the floor of the area to be monitored and which are based on their serve as area markings for several cutting planes.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01976199A EP1410354A2 (en) | 2000-09-08 | 2001-09-06 | Device for surveilling an area in a room |
AU2001295545A AU2001295545A1 (en) | 2000-09-08 | 2001-09-06 | Device for surveilling an area in a room |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10044689.2 | 2000-09-08 | ||
DE10044689A DE10044689A1 (en) | 2000-09-08 | 2000-09-08 | Device for monitoring an area of a room |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002021473A2 true WO2002021473A2 (en) | 2002-03-14 |
WO2002021473A3 WO2002021473A3 (en) | 2002-05-23 |
Family
ID=7655678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/010295 WO2002021473A2 (en) | 2000-09-08 | 2001-09-06 | Device for surveilling an area in a room |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1410354A2 (en) |
AU (1) | AU2001295545A1 (en) |
DE (1) | DE10044689A1 (en) |
WO (1) | WO2002021473A2 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993835A (en) * | 1989-06-16 | 1991-02-19 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for detecting three-dimensional configuration of object employing optical cutting method |
EP0448803A2 (en) * | 1990-03-28 | 1991-10-02 | GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. | Video control system |
EP0577491A1 (en) * | 1992-06-29 | 1994-01-05 | Matra Cap Systemes | Process and device for monitoring a three-dimensional scene using imagery sensors |
DE4233384A1 (en) * | 1992-10-05 | 1994-04-07 | Contraves Gmbh | Measuring profile section, esp. width and height - evaluating profile section contours from detected light reflected during successive illuminations |
US5402364A (en) * | 1993-01-15 | 1995-03-28 | Sanyo Machine Works, Ltd. | Three dimensional measuring apparatus |
US5657003A (en) * | 1996-02-26 | 1997-08-12 | Fuentes; Alfredo | Structure movement monitoring and emergency alarm system |
DE19757595A1 (en) * | 1997-12-23 | 1999-07-01 | Siemens Ag | Three=dimensional image recording method e.g. for monitoring movements and persons in given space |
EP1030173A1 (en) * | 1999-02-18 | 2000-08-23 | Spectra-Physics VisionTech Oy | Arrangement and method for inspection of surface quality |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5343284A (en) * | 1990-10-24 | 1994-08-30 | Kaman Aerospace Corporation | Imaging lidar system employing bistatic operation |
US5477459A (en) * | 1992-03-06 | 1995-12-19 | Clegg; Philip M. | Real time three-dimensional machine locating system |
DE4320485B4 (en) * | 1993-06-21 | 2007-04-19 | Eads Deutschland Gmbh | Object measuring method by means of intelligent distance image camera |
DE4343092A1 (en) * | 1993-12-17 | 1995-06-22 | Bayerische Motoren Werke Ag | Laser beam device for motor vehicles |
GB2285550B (en) * | 1994-01-05 | 1997-09-17 | Creo Products Inc | Optical coordinate measuring system for large objects |
DE19516324A1 (en) * | 1995-04-24 | 1996-10-31 | Gos Ges Zur Foerderung Angewan | Remote object position, shape and movement parameter measurement method for e.g. LIDAR |
US5852672A (en) * | 1995-07-10 | 1998-12-22 | The Regents Of The University Of California | Image system for three dimensional, 360 DEGREE, time sequence surface mapping of moving objects |
DE19530289A1 (en) * | 1995-08-17 | 1997-02-20 | Bosch Gmbh Robert | Sensor for determining visibility and rain cover |
US6144366A (en) * | 1996-10-18 | 2000-11-07 | Kabushiki Kaisha Toshiba | Method and apparatus for generating information input using reflected light image of target object |
DE19827835B4 (en) * | 1998-06-23 | 2012-01-19 | Robert Bosch Gmbh | Image transmission method and apparatus |
DE19835797C2 (en) * | 1998-08-07 | 2003-01-23 | Deutsch Zentr Luft & Raumfahrt | Method for detecting smoke using a lidar system |
-
2000
- 2000-09-08 DE DE10044689A patent/DE10044689A1/en not_active Withdrawn
-
2001
- 2001-09-06 AU AU2001295545A patent/AU2001295545A1/en not_active Abandoned
- 2001-09-06 EP EP01976199A patent/EP1410354A2/en not_active Withdrawn
- 2001-09-06 WO PCT/EP2001/010295 patent/WO2002021473A2/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4993835A (en) * | 1989-06-16 | 1991-02-19 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for detecting three-dimensional configuration of object employing optical cutting method |
EP0448803A2 (en) * | 1990-03-28 | 1991-10-02 | GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. | Video control system |
EP0577491A1 (en) * | 1992-06-29 | 1994-01-05 | Matra Cap Systemes | Process and device for monitoring a three-dimensional scene using imagery sensors |
DE4233384A1 (en) * | 1992-10-05 | 1994-04-07 | Contraves Gmbh | Measuring profile section, esp. width and height - evaluating profile section contours from detected light reflected during successive illuminations |
US5402364A (en) * | 1993-01-15 | 1995-03-28 | Sanyo Machine Works, Ltd. | Three dimensional measuring apparatus |
US5657003A (en) * | 1996-02-26 | 1997-08-12 | Fuentes; Alfredo | Structure movement monitoring and emergency alarm system |
DE19757595A1 (en) * | 1997-12-23 | 1999-07-01 | Siemens Ag | Three=dimensional image recording method e.g. for monitoring movements and persons in given space |
EP1030173A1 (en) * | 1999-02-18 | 2000-08-23 | Spectra-Physics VisionTech Oy | Arrangement and method for inspection of surface quality |
Also Published As
Publication number | Publication date |
---|---|
WO2002021473A3 (en) | 2002-05-23 |
EP1410354A2 (en) | 2004-04-21 |
DE10044689A1 (en) | 2002-03-21 |
AU2001295545A1 (en) | 2002-03-22 |
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