DE102005037271A1 - Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening - Google Patents
Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening Download PDFInfo
- Publication number
- DE102005037271A1 DE102005037271A1 DE102005037271A DE102005037271A DE102005037271A1 DE 102005037271 A1 DE102005037271 A1 DE 102005037271A1 DE 102005037271 A DE102005037271 A DE 102005037271A DE 102005037271 A DE102005037271 A DE 102005037271A DE 102005037271 A1 DE102005037271 A1 DE 102005037271A1
- Authority
- DE
- Germany
- Prior art keywords
- camera
- disk
- rain sensor
- disc
- small
- 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- Withdrawn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
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
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Blocking Light For Cameras (AREA)
Abstract
Description
Die Erfindung betrifft einen Regensensor zur Messung des Benetzungs- und/oder Verschmutzungsgrades einer durchsichtigen Scheibe.The The invention relates to a rain sensor for measuring wetting and / or degree of soiling of a transparent pane.
Zur
Steuerung von Scheibenwischern und gegebenenfalls auch Scheibenwaschanlagen
sind beispielsweise durch
Ferner
ist durch
Aufgabe der vorliegenden Erfindung ist es, eine größere Fläche auf der Scheibe zu erfassen und gleichzeitig die störende Wirkung von Hintergrundbildern zu unterdrücken.task The present invention is to detect a larger area on the disc and at the same time the disturbing Suppress effect of background images.
Vorteile der ErfindungAdvantages of invention
Diese Aufgabe wird erfindungsgemäße dadurch gelöst, dass eine elektronische Kamera auf die Scheibe gerichtet ist, dass die Kamera auf eine von der Scheibe abweichende Ebene fokussiert ist und eine Blende aufweist, die mindestens auf eine große und eine kleine Öffnung derart steuerbar ist, dass bei der großen Öffnung mindestens auf der Scheibe befindliche Gegenstände unscharf und bei kleiner Öffnung sowohl auf der Scheibe befindliche Gegenstände als auch ein Hintergrund scharf abgebildet werden, und dass Mittel zur Bildung eines Differenzbildes zwischen mindestens einem mit großer und mit mindestens einem mit kleiner Öffnung aufgenommenen Bild vorgesehen sind.These Task is characterized according to the invention solved, that an electronic camera is aimed at the disc that the camera focuses on a plane other than the disc is and has an aperture that is at least one big and one small opening is controllable such that at the large opening at least on the disc located objects out of focus and with a small opening both on-disk objects and a background be sharply imaged, and that means for forming a difference image between at least one with a large and at least one with small opening recorded image are provided.
Elektronische Kameras mit einem Objektiv fester Brennweite und mit genügend großer Auflösung sind preiswert erhältlich. Mittel zur Auswertung der von der Kamera erzeugten Bildsignale, die in erster Linie aus einem Mikrocomputer mit geeigneten Programmen bestehen, können ebenfalls preiswert hergestellt werden.electronic Cameras with a lens of fixed focal length and with sufficiently large resolution are reasonably priced. Means for evaluating the image signals generated by the camera, which consists primarily of a microcomputer with suitable programs can exist also be produced inexpensively.
Zwischen den Abbildungen auf dem Sensor der Kamera bei großer und kleiner Öffnung können sich durch die Abbildungseigenschaften des Objektivs Unterschiede ergeben, beispielsweise bezüglich der Abbildungsgeometrie, Schärfeverteilung und Vignettierung.Between the pictures on the sensor of the camera at large and small opening can show differences due to the imaging properties of the lens for example, with respect to Picture geometry, sharpness distribution and vignetting.
Um dadurch entstehende Messfehler zu vermeiden, sind bei einer Weiterbildung der Erfindung Mittel zur Anpassung des mit großer und des mit kleiner Öffnung aufgenommenen Bildes bezüglich Geometrie und Helligkeit vorgesehen. Diese Mittel können beispielsweise darin bestehen, dass bei einer Justierung des Regensensors Korrekturwerte gespeichert werden.Around To avoid resulting measurement errors are in a training of the invention Means adapted to accommodate the large and the small opening Image re Geometry and brightness provided. These agents can, for example consist in that when adjusting the rain sensor correction values get saved.
Eine Gewinnung der Messwerte kann bei dem erfindungsgemäßen Regensensor durch Mittel zur Hochpassfilterung des Differenzbildes erfolgen, wobei vorzugsweise eine Hochpass-Fourier-Filterung angewendet wird.A Obtaining the measured values can in the rain sensor according to the invention by means for high-pass filtering of the differential image, wherein preferably a high-pass Fourier filtering is applied.
Alternativ kann auch eine Auswertung durch Mittel zur Tiefpassfilterung des Differenzbildes und zur Bildung der Differenz zwischen dem ursprünglichen Differenzbild und dem Tiefpass gefilterten Differenzbild erfolgen.alternative can also be evaluated by means for low-pass filtering of the Difference image and to form the difference between the original Difference image and the low-pass filtered difference image done.
Die gewünschten scharfen bzw. unscharfen Abbildungen können bei dem erfindungsgemäßen Regensensor dadurch erzielt werden, dass die Kamera auf eine zwischen der Scheibe und dem Hintergrund liegende Ebene fokussiert ist oder dass die Kamera auf eine zwischen der Kamera und der Scheibe liegende Ebene fokussiert ist.The desired sharp or blurred images can in the rain sensor according to the invention be achieved by the camera on one between the disc and the background plane is focused or that the Camera on a plane between the camera and the disc is focused.
Zeichnungdrawing
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zwei davon sind schematisch in der Zeichnung anhand mehrerer Figuren dargestellt und nachfolgend beschrieben. Es zeigt:The Invention leaves numerous embodiments to. Two of them are schematic in the drawing on the basis of several Figures shown and described below. It shows:
Beschreibung der Ausführungsbeispieledescription the embodiments
Bei
dem Ausführungsbeispiel
nach
Bei
kleinerer Blendenöffnung
Bei
dem Ausführungsbeispiel
nach
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037271A DE102005037271A1 (en) | 2005-08-08 | 2005-08-08 | Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037271A DE102005037271A1 (en) | 2005-08-08 | 2005-08-08 | Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005037271A1 true DE102005037271A1 (en) | 2007-02-15 |
Family
ID=37680938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005037271A Withdrawn DE102005037271A1 (en) | 2005-08-08 | 2005-08-08 | Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005037271A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008043737A1 (en) | 2008-11-14 | 2010-05-20 | Robert Bosch Gmbh | Method for detecting raindrops on disk, involves recording measured image in plane of disk and reference image is recorded in plane deviating from plane of disk |
DE102011056690A1 (en) * | 2011-12-20 | 2013-06-20 | Continental Automotive Gmbh | Method and device for detecting moisture on a vehicle window |
-
2005
- 2005-08-08 DE DE102005037271A patent/DE102005037271A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008043737A1 (en) | 2008-11-14 | 2010-05-20 | Robert Bosch Gmbh | Method for detecting raindrops on disk, involves recording measured image in plane of disk and reference image is recorded in plane deviating from plane of disk |
DE102011056690A1 (en) * | 2011-12-20 | 2013-06-20 | Continental Automotive Gmbh | Method and device for detecting moisture on a vehicle window |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2384295B1 (en) | Camera system and method for capturing the surroundings of a vehicle | |
EP1159170B1 (en) | Device for detecting objects on a windscreen of a motor vehicle | |
EP2558336B1 (en) | Method and device for assisting a driver while driving a vehicle by detecting weather-related visibility limitations | |
EP2384296A1 (en) | Camera arrangement for sensing a state of a vehicle window | |
EP1303768B1 (en) | Method for determining visibility | |
DE10139514A1 (en) | Transmission detector for window body, especially vehicle windscreen, has optics forming images of sections of body surface on detector whose maximum separation is comparable with free body aperture | |
DE102010043479B4 (en) | Camera arrangement and method for operating a camera arrangement for a motor vehicle | |
DE102008041732A1 (en) | Chassis testing device and method for testing a chassis | |
DE102015007794A1 (en) | Method and device for detecting moisture and / or contamination on an outside of a cover of an image sensor | |
DE4041922C2 (en) | Distance sensor device for measuring the distance from a moving object | |
DE102010023532A1 (en) | Camera system for vehicle application, particularly for vehicle assistance system for mounting behind disk of vehicle, has optical system for forming electromagnetic radiation | |
WO2017041795A1 (en) | Stereo camera device for monitoring the surroundings of a motor vehicle, motor vehicle with such a stereo camera device and method for detecting rain drops or deposits | |
DE102016208398A1 (en) | Method for calibrating a vehicle camera | |
WO2013041292A1 (en) | Image capturing device for a vehicle | |
DE102005037271A1 (en) | Rain sensor for measuring wetness or degree of pollution on transparent disk has electronic camera, which is directed towards the disk whereby camera has aperture, which can be controlled on small and large opening | |
DE10230200A1 (en) | Method and device for the detection of objects located on a surface of a transparent element | |
DE19909989A1 (en) | Device for detecting objects on windshield of vehicle has object surface plane focused by objective that is oblique with respect to imaging axis of objective sensor array arrangement | |
WO2015090997A1 (en) | Optical sensor system | |
DE102020007064B4 (en) | Method for calibrating a first lighting device, a second lighting device and an optical sensor, control device for carrying out such a method, calibration device with such a control device and motor vehicle with such a calibration device | |
WO2007137835A2 (en) | Method and array for the detection of the optical quality of a transparent window | |
DE102020005762B4 (en) | Method for calibrating a lighting device and an optical sensor, control device for carrying out such a method, calibration device with such a control device and motor vehicle with such a calibration device | |
DE102016013522A1 (en) | Method for calibrating a vehicle camera | |
DE102005007283A1 (en) | Object distance measurement procedure uses lamp providing oscillating non repeating coded line pattern form array transducer base triangulation | |
DE102021201136A1 (en) | Method and device for monitoring the interior of a vehicle | |
DE112022001260T5 (en) | OBJECT DISTANCE DETECTION DEVICE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20120423 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |