DE10322010A1 - Image recognition system for detecting precipitation on motor vehicle screen uses defined area of vehicle surface detected by camera through screen as background for image acquisition, processing - Google Patents
Image recognition system for detecting precipitation on motor vehicle screen uses defined area of vehicle surface detected by camera through screen as background for image acquisition, processing Download PDFInfo
- Publication number
- DE10322010A1 DE10322010A1 DE2003122010 DE10322010A DE10322010A1 DE 10322010 A1 DE10322010 A1 DE 10322010A1 DE 2003122010 DE2003122010 DE 2003122010 DE 10322010 A DE10322010 A DE 10322010A DE 10322010 A1 DE10322010 A1 DE 10322010A1
- Authority
- DE
- Germany
- Prior art keywords
- camera
- motor vehicle
- recognition system
- image recognition
- image
- 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- Withdrawn
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000006735 deficit Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0833—Optical rain sensor
- B60S1/0844—Optical rain sensor including a camera
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0874—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield
- B60S1/0885—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield the sensor being integrated in a rear-view mirror module
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Studio Devices (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
Description
Die Erfindung betrifft ein Bilderkennungssystem zum Erfassen einer Niederschlagsmenge auf einer Scheibe eines Kraftfahrzeugs, mit einer im Kraftfahrzeug angeordnete Kamera zum Aufnehmen eines Bildes eines Bereiches der Scheibe und einer Bildverarbeitungseinheit zur Bestimmung der Niederschlagsmenge aus dem von der Kamera aufgenommenen Bild.The The invention relates to an image recognition system for detecting a precipitation amount on a disc of a motor vehicle, with one in the motor vehicle arranged camera for taking a picture of an area of the Disk and an image processing unit for determining the amount of precipitation from the picture taken by the camera.
Aus
der
Als nachteilig wird seitens der Anmelderin angesehen, dass das aus dem Stand der Technik bekannte Bilderkennungssystem aufgrund der Verwendung des durchscheinenden Schirms, der nicht im primären Sichtfeld eines Fahrers angeordnet ist, ein flächenmäßig nicht ausreichender und das eigentliche Sichtfeld des Fahrers nicht repräsentierender Bereich der Windschutzscheibe erfasst wird. Zudem wird nur die Flüssigkeitsmenge und nicht die eigentlich interessierende Durchsicht-Qualität ermittelt. Dadurch ist eine optimale Ansteuerung eines Wischblattes zum Reinigen der Windschutzscheibe nicht gewährleistet.As The Applicant considers that the disadvantage of the Prior art known image recognition system due to the use the translucent screen that is not in the primary field of view of a driver is arranged, a surface not sufficient and the actual field of vision of the driver not representing area the windshield is detected. In addition, only the amount of liquid and not the transparency of interest that is actually of interest. This is an optimal control of a wiper blade for cleaning the windscreen is not guaranteed.
Der Erfindung liegt somit die Aufgabe zugrunde, eine gegenüber dem Stand der Technik verbessertes Bilderkennungssystem zum Erfassen einer Niederschlagsmenge auf einer Scheibe eines Kraftfahrzeugs anzugeben, welches eine im Kraftfahrzeug angeordnete Kamera zum Aufnehmen eines Bildes eines Bereiches der Scheibe und eine Bildverarbeitungseinheit zur Bestimmung der Niederschlagsmenge aus dem von der Kamera aufgenommenen Bild aufweist.Of the Invention is therefore based on the object, a relation to the Prior art improved image recognition system for detecting a rainfall on a disc of a motor vehicle indicate which one arranged in the motor vehicle camera for Taking an image of an area of the disk and an image processing unit to determine the amount of rainfall from the recorded by the camera Image has.
Die Aufgabe wird gelöst durch ein Bilderkennungssystem zum Erfassen einer Niederschlagsmenge auf einer Scheibe eines Kraftfahrzeuges mit den Merkmalen des Anspruchs 1.The Task is solved by an image recognition system for detecting a rainfall amount on a disc of a motor vehicle with the features of the claim 1.
Erfindungsgemäß ist ein vorgegebener Bereich einer Oberfläche des Kraftfahrzeugs mit der Kamera durch die Scheibe erfassbar, welcher als definierter Hintergrund für die Aufnahme des Bildes und zur Bestimmung der Niederschlagsmenge durch die Bildverarbeitungseinheit aus dem von der Kamera aufgenommenen Bild dient. Es wird kein wie aus dem Stand der Technik bekannter durchscheinender Schirm zum Identifizieren von Wassertropfen benötigt. Dadurch kann der mit der Kamera erfassbare Ausschnitt der Scheibe wesentlich größer gewählt werden und zudem in einem Bereich der Scheibe liegen, der das Sichtfeld eines Fahrers wesentlich besser repräsentiert. Bedingt durch den größeren erfassbaren Bereich entsteht ein statistischer Vorteil bei der Bestimmung der Niederschlagsmenge. Der größere erfassbare Bereich im Sichtfeld des Fahrers und die erfindungsgemäß ermittelte Durchsicht-Qualität ergibt eine bessere Auslösecharakteristik für eine von der Bildverarbeitungseinheit angesteuerte Scheibenwischanlage. Als definierter Hintergrund für die Bilderfassung können in der Regel bereits vorhandene Flächen, gegebenenfalls mit einem Muster versehene Flächen, bzw. Komponenten des Kraftfahrzeugs benutzt werden. Aufwendige Zusatzkonstruktionen wie der aus dem Stand der Technik bekannte transparente Schirm, die zudem den mit der Kamera zu erfassenden Bereich flächenmäßig einschränken, werden nicht benötigt. Da die Kamera nicht durch speziell eingesetzte Mittel zur Niederschlagserfassung in ihrer Fernsicht beschränkt ist, kann diese wenigstens teilweise auch Aufgaben einer Umgebungsüberwachung übernehmen.According to the invention is a predetermined area of a surface of the motor vehicle with the camera by the disc detectable, which as defined Background for recording the image and determining the amount of rainfall by the image processing unit from that taken by the camera Image serves. It does not become as known in the art translucent screen needed to identify drops of water. Thereby can the captured with the camera section of the disc essential be chosen larger and also lie in an area of the disc, which is the field of vision represents a driver much better. Due to the larger detectable Area creates a statistical advantage in determining the Rainfall. The larger detectable Area in the field of vision of the driver and inventively determined Transmission-quality gives a better tripping characteristic for one wiper system controlled by the image processing unit. As a defined background for the image capture can usually existing areas, if necessary with a Patterned areas, or components of the motor vehicle are used. Elaborate additional constructions such as the well-known from the prior art transparent screen, the In addition, the range to be registered with the camera area to restrict area, are not required. Because the camera is not by specially used means for precipitation detection limited in their distance vision is, this can at least partially take over tasks of environmental monitoring.
In einer Ausgestaltung, bei welcher die Kamera in einem oberen Bereich des Innenraums des Kraftfahrzeuges angeordnet ist, ist es vorteilhaft, wenn die Kamera im Dachhimmel des Kraftfahrzeuges angeordnet ist. Mit dieser Anordnung kann eine außerhalb des Innenraums sich befindliche Oberfläche bzw. Komponente des Kraftfahrzeugs besser erfasst werden. Mit einem geeignet gewählten Kameraabstand zur Scheibe, kann der mit der Kamera erfassbare Bereich im Sichtfeld des Fahrers flächenmäßig maximiert und von der Lage im Sichtfeld her optimiert werden.In an embodiment in which the camera in an upper area the interior of the motor vehicle is arranged, it is advantageous if the camera is arranged in the headliner of the motor vehicle. With This arrangement can be an outside the interior surface or component of the motor vehicle be recorded better. With a suitably chosen camera distance to the disc, The area detectable by the camera can be in the field of view of the driver maximized in terms of area and be optimized by the situation in the field of vision.
Es ist von Vorteil, wenn der vorgegebene Bereich des Kraftfahrzeuges die Oberfläche einer Struktur, insbesondere eines Lüftungsgitter, ist oder umfasst. Das im Außenbereich des Kraftfahrzeuges, beispielsweise im Nahbereich der Scheibe, angeordnete Lüftungsgitter weist eine Strukturierung bzw. Musterung auf, vor dessen Hintergrund sich eine Niederschlagsmenge in Form von Flüssigkeitstropfen aufgrund der detaillierten und scharf begrenzten Struktur des Lüftungsgitters besonders gut identifizieren lässt. Durch die relative Anordnung von Belüftungsgitter und Kamera zueinander – das Belüftungsgitter ist in einem scheibennahen unteren Außenbereich der Scheibe und die Kamera in einem scheibennahen oberen Innenraumbereich des Kraftfahrzeuges angeordnet – wird ein flächenmäßig großer Bereich der Scheibe mit der Kamera erfasst. Neben dem primären Sichtbereich des Fahrers wird zusätzlich der untere Scheibenbereich mit der Kamera erfasst. Da sich der Niederschlag auf der Scheibe strömungstechnisch vorrangig von unten nach oben aufbaut, bedingt durch eine aufwachsende Gischt und zusätzlich von dem vom Kraftfahrzeug selbst reflektierten Regenwasser, ist eine Erfassung des Niederschlages im unteren Bereich der Scheibe von besonderem Interesse, da nur mit der Niederschlagserfassung im unteren Scheibenbereich beispielsweise ein Wischvorgang für die Scheibe so rechtzeitig ausgelöst werden kann, dass eine Beeinträchtigung der Sichtverhältnisse für den Fahrer bereits im Voraus weitestgehend vermieden werden kann.It is advantageous if the predetermined range of the motor vehicle, the surface of a Struk ture, in particular a ventilation grille, is or comprises. The ventilation grille arranged in the outer area of the motor vehicle, for example in the vicinity of the pane, has a structuring or pattern on the background of which precipitation in the form of liquid droplets can be identified particularly well due to the detailed and sharply delimited structure of the ventilation grille. Due to the relative arrangement of ventilation grille and camera to each other - the ventilation grille is disposed in a disc-near lower outside of the disc and the camera in a disc-near upper interior region of the motor vehicle - a large area of the disc is detected with the camera. In addition to the driver's primary field of view, the lower pane area is additionally recorded with the camera. Since the precipitate builds up on the disc primarily from bottom to top, due to a growing spray and additionally from the rainwater reflected by the motor vehicle itself, a detection of the precipitate in the lower part of the disc is of particular interest, since only with the precipitation detection in lower wheel area, for example, a wiping process for the disc can be triggered in time so that an impairment of visibility for the driver can be avoided in advance as far as possible.
Die Scheibe kann die Windschutzscheibe oder die Heckscheibe des Kraftfahrzeuges sein. Das Bilderkennungssystem kann aber auch für Scheiben von Eisenbahnen, Schiffen oder anderen Typen von Kraftfahrzeugen eingesetzt werden.The Disc can be the windshield or the rear window of the motor vehicle his. The image recognition system can also be used for windows of railways, Ships or other types of motor vehicles.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen wiedergegeben.Further advantageous embodiments of the invention are given in the dependent claims.
Die
Erfindung wird anhand mehrerer Ausführungsbeispiele in den Figuren
näher erläutert. Dabei zeigen
die
In
Das
Bilderkennungssystem
Mit
der Kamera
Zur
Unabhängigkeit
der Anordnung von Tageslicht wird vorzugsweise eine Infrarot-empfindliche Kamera
Die
Kamera
Die
Kamera
Im
Kraftfahrzeug
Mit
der Ausrichtung der Kamera
Als
Struktur
Mit
dem Bilderkennungssystem
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003122010 DE10322010A1 (en) | 2003-05-16 | 2003-05-16 | Image recognition system for detecting precipitation on motor vehicle screen uses defined area of vehicle surface detected by camera through screen as background for image acquisition, processing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003122010 DE10322010A1 (en) | 2003-05-16 | 2003-05-16 | Image recognition system for detecting precipitation on motor vehicle screen uses defined area of vehicle surface detected by camera through screen as background for image acquisition, processing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10322010A1 true DE10322010A1 (en) | 2004-12-02 |
Family
ID=33394649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2003122010 Withdrawn DE10322010A1 (en) | 2003-05-16 | 2003-05-16 | Image recognition system for detecting precipitation on motor vehicle screen uses defined area of vehicle surface detected by camera through screen as background for image acquisition, processing |
Country Status (1)
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DE (1) | DE10322010A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005035812A1 (en) * | 2005-07-27 | 2007-02-08 | Adc Automotive Distance Control Systems Gmbh | Method of detecting soiling on a transparent pane |
DE102005058718A1 (en) * | 2005-12-08 | 2007-06-14 | Conti Temic Microelectronic Gmbh | Sensor system for motor vehicle, has surrounding detection sensor formed as proximity sensor, rain sensor having low- resolution camera, and common evaluation unit for evaluation of sensor data, where sensors are arranged in common housing |
EP1736384A3 (en) * | 2005-06-24 | 2008-07-02 | Audi Ag | Device and method to control a sensor arrangement in a vehicle |
DE102010013837A1 (en) * | 2010-03-26 | 2011-09-29 | Vr Vision Research Gmbh | Sensor system for determining degree of wetting caused by e.g. rain on outer side of windscreen of motor car, has sources arranged at outer side of pane for determining aberrations that are produced due to outer wetting of pane |
US9040915B2 (en) | 2009-07-06 | 2015-05-26 | Conti Temic Microelectronic Gmbh | Optical module for simultaneously focusing on two fields of view |
US9335264B2 (en) | 2010-11-30 | 2016-05-10 | Conti Temic Microelectronic Gmbh | Detection of raindrops on a pane by means of a camera and lighting |
DE102015218500A1 (en) | 2015-09-25 | 2017-03-30 | Conti Temic Microelectronic Gmbh | Illumination and camera-based detection of raindrops on a pane |
US9702818B2 (en) | 2012-05-03 | 2017-07-11 | Conti Temic Microelectronic Gmbh | Detection of raindrops on a windowpane by means of camera and light |
US10137842B2 (en) | 2011-06-03 | 2018-11-27 | Conti Temic Microelectronic Gmbh | Camera system for a vehicle |
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-
2003
- 2003-05-16 DE DE2003122010 patent/DE10322010A1/en not_active Withdrawn
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US6320176B1 (en) * | 1993-02-26 | 2001-11-20 | Donnelly Corporation | Vehicle rain sensor using imaging sensor |
DE19700665C2 (en) * | 1996-01-11 | 1999-06-02 | Tokai Rika Co Ltd | Sensor for detecting foreign material and windshield wiper system with sensor for detecting foreign material, especially raindrops |
EP0832798A2 (en) * | 1996-09-13 | 1998-04-01 | Mitsuba Corporation Co., Ltd. | Image recognition system |
DE19749331A1 (en) * | 1997-11-07 | 1999-05-20 | Kostal Leopold Gmbh & Co Kg | Method of detecting objects on motor vehicle windscreen |
DE19855041A1 (en) * | 1998-11-28 | 2000-05-31 | Valeo Auto Electric Gmbh | Device for the detection of particles on a windshield |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1736384A3 (en) * | 2005-06-24 | 2008-07-02 | Audi Ag | Device and method to control a sensor arrangement in a vehicle |
DE102005035812A1 (en) * | 2005-07-27 | 2007-02-08 | Adc Automotive Distance Control Systems Gmbh | Method of detecting soiling on a transparent pane |
US8274562B2 (en) | 2005-07-27 | 2012-09-25 | Adc Automotive Distance Control Systems Gmbh | Method for identifying soiling on a transparent screen |
DE102005058718A1 (en) * | 2005-12-08 | 2007-06-14 | Conti Temic Microelectronic Gmbh | Sensor system for motor vehicle, has surrounding detection sensor formed as proximity sensor, rain sensor having low- resolution camera, and common evaluation unit for evaluation of sensor data, where sensors are arranged in common housing |
DE102005058718B4 (en) * | 2005-12-08 | 2020-06-04 | Conti Temic Microelectronic Gmbh | Sensor system for environmental detection and rain detection |
US9040915B2 (en) | 2009-07-06 | 2015-05-26 | Conti Temic Microelectronic Gmbh | Optical module for simultaneously focusing on two fields of view |
DE102010013837A1 (en) * | 2010-03-26 | 2011-09-29 | Vr Vision Research Gmbh | Sensor system for determining degree of wetting caused by e.g. rain on outer side of windscreen of motor car, has sources arranged at outer side of pane for determining aberrations that are produced due to outer wetting of pane |
US9335264B2 (en) | 2010-11-30 | 2016-05-10 | Conti Temic Microelectronic Gmbh | Detection of raindrops on a pane by means of a camera and lighting |
US10137842B2 (en) | 2011-06-03 | 2018-11-27 | Conti Temic Microelectronic Gmbh | Camera system for a vehicle |
US9702818B2 (en) | 2012-05-03 | 2017-07-11 | Conti Temic Microelectronic Gmbh | Detection of raindrops on a windowpane by means of camera and light |
DE102015218500A1 (en) | 2015-09-25 | 2017-03-30 | Conti Temic Microelectronic Gmbh | Illumination and camera-based detection of raindrops on a pane |
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