GB2491267A - Method for controlling the light function of a vehicle based on detection of lights of oncoming or preceding vehicle - Google Patents
Method for controlling the light function of a vehicle based on detection of lights of oncoming or preceding vehicle Download PDFInfo
- Publication number
- GB2491267A GB2491267A GB1209295.3A GB201209295A GB2491267A GB 2491267 A GB2491267 A GB 2491267A GB 201209295 A GB201209295 A GB 201209295A GB 2491267 A GB2491267 A GB 2491267A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vehicle
- road
- ahead
- image area
- travelling
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/41—Indexing codes relating to other road users or special conditions preceding vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
Abstract
Disclosed is a method for controlling the light function of a vehicle 40 on the basis of an evaluation, by means of an evaluating unit, of images of the vehicle environment picked up by means of an image pickup system. On the basis of information about road sections lying ahead, at least one image area 10 is selected for the evaluation which can be illuminated by a travelling-ahead or oncoming vehicle 50. In the evaluation of the selected image area, the brightness of the selected image area 10 is measured and is compared with a known brightness produced by the light power of one's own vehicle 40 in the selected image area. On registering of an increase in brightness of the measured brightness of the selected image area 10 compared with the brightness produced by the light power of one's own vehicle 40 in the selected image area, an oncoming or preceding vehicle 50 is recognised.
Description
S
Description Title
Method for controlling the light function of a_ vehicle and vehicle having a driver assistance system for carryng out the method
Prior art
The present invention relates to a method for controlling the light function of a vehicle on the basis of information about road sections lying ahead and on the basis of an evaluation of images of the vehicle environment picked up * by means of an image pickup system. The invention also relates to a vehicle having a driver assistance system for carrying out the method.
* Automated light controls for motor vehicles currently exist on the market. In the case of these controls, turning the headlights on full beam, dipping the headlights, and light range as well as direction is determined in dependence on the immediate environment. Optical systems are currently employed for this task.
As soon as the driving situation allows, the headlights are automatically turned on full beam and the driver, has the maximum view of the road. A$ soon as an oncoming vehicle comes into visual range, the headlight's are correspondingly dipped.
Current systems, however, have the problem of scarcely being able to recognise early indicators of an oncoming
S
vehicle, so as to dip the headlights even earlier and not dazzle.the oncoming traffic.
From the document US 6(343,869 B]. there is known a lighting device for illuminating the driving environment of a vehicle, comprising a detecting device for' detecting information about the driving environment of the vehicle.
By means of a GPS navigation system, the detecting device can deliver information about the current stretch of road, such as for example information about the shape of the road to be driven on or about the current position of the vehicle on the road to be driven on. Furthermore, the detecting device can have an image pickup system for recognising an oncoming or travelling-ahead vehicle on the basis of an evaluation of images of the visible environment of the vehicle. An oncoming or a travelling-ahead vehicle can also be recognised by means of a photosensor which detects the light falling on its light-sensitive surface.
In this case, the light function of the lighting device is controlled, inter alia, in dependence on' the shape of the road to be driven on and on the basis of information about whether further vehicles are present on the current stretbh of road in the immediate vicinity of the vehicle.
The disadvantage with this device is that the recognition of an oncoming or travelling-ahead vehicle on bends at night takes place very late. ±n the case of the use of the image pickup system presented here, this recognition does not take place until the oncorfring or travelling-ahead vehicle is situated in the visible vicinity of one's own' vehicle.
S
chen using a photosensor, this recognition does not take place until the light coming from an oncoming or travelling-ahead ehicle strikes the light-sensitive surface of the photosensor. Oblique light coming from a vehicle which is situated on a bend, and of which there is not yet a direct view1 cannot even strike the light-sensitive surface of the photosensor at first. An early recognition of such a vehicle by means of a photosensor is therefore scarcely possible.
The driver of such a vehicle not recognised early is unintentionally dazzled, which can lead to a reduction in road safety.
Disclosure of the invention
According to the invention, a method for controlling the light function of a vehicle on the basis of an evaluation, by means of an evaluating unit, of images of the vehicle environment picked up by means of an image pickup system is provided. In this method, on recognition of a travelling-ahead or oncoming vehicle on the basis of the evaluation of theimagesof the vehicle environment, the evaluating unit pxoduces a control signal. The control signal produced by the evaluating unit is used to control the light function of the motor vehicle. Furthermore, on the basis of * information about road sections lying ahead, at least one image area is selected for the evaluation which can be illuminated by a travelling-ahead or oncoming vehicle. In the evaluation of the selected image area, the brightness of the selected image area is measured and is compared with the known brightness produced by the light power of one's own vehicle in the selected image area. On registering of S. an increase in brightness of the measured brightness of the selected image area compared with the brightness produced by the light power of one's own vehicle in the selected image area and in particular when road sections lying ahead have no junctions, an oncoming or travelling-ahead vehicle is recognised.
The subclaims show preferred developments of the invention.
The method according to the invention enables recognition of early indicators of an oncoming or travelling-ahead vehicle on bends at night. For this reason, image areas which are or would be directly illuminated by an oncoming or travelling-ahead vehicle are evaluated.
If the road sections lying ahead are known and there are no roads leading in, the image areas which are or would be directly illuminated in front of an oncoming or travelling-ahead vehicle can be selected for the eyaluation in a simple manner. Information about road sections lying ahead can be provided in particular by means of a GE'S navigation system. If a large increase in brightness lying above "one's own capability" is registered in the image areas selected for the evaluation and th navigation enviroPment (GE'S) has no roads leading in, it may be assumed that there is an oncoming or travelling-ahead vehicle. If a travelling-ahead or oncoming vehicle is recognised early, the headlights are dipped in good time.
If, by contrast, no significant increase in brightness compared with the brightness produced by the light power of one's own vehicle is registered, it may be assumed that the roadway is clear and that it is suitable to continue driving with full beam.
The early recognition of other road users is extremely important for the automatic control of light functions, in order especially to end the full-beam function in good time. On long straight stretches, oncoming or travelling-ahead vehicles can be recognised early. In ve*y winding areas, however, this is possible only with great difficulty, since there is no direct view of the oncoming or travelling-ahead vehicle.
By the method according to the invention, an oncoming or travelling-ahead vehicle on bends at night is recognised early by means of a brightness measurement in at least one selected image area. The selection of the, image area to be' evaluated and the measurement of its brightnesses takes place, according to the invention, without much computing expenditure.
Advantageously, in particular an image area which is an illuminated area of a section, e.g. of a road, of the vehicle, environment is selected and evaluated.
The method according to the Invention can also be applied to recognised road lines., In particular, the selected image area comprises at least a first road-line region of a recognised road line. If the lines in one's own light cone are brighter than would be possible from one's own luminous power, it may be inferred that there is a travelling-ahead or oncoming vehicle. In the invention', regions of recognised road lines' in particular are selected and evaluated, since these are very easy to recognise and assign in particular owing to their light colouring.
According to the invention, a selected image area can lie inside or outside the light cones of one's own vehicle.
Preferably, .f or the evaluation according to the invention, at least one illuminated image area with a first road-line region of a recognised road line inside the light cones of' one's own vehicle and at least one further illuminated * image area with a second road-line region of a recognised road line outside the light cones of one's own vehicle are selected. In the evaluation, of the selected image areas, the second road-line region is compared with an extrapolated extension of the first road-line region. If there is a correspondence between the second road-line region and the extrapolated extension of the first road-line region, an oncoming or travelling-ahead vehicle is recognised.
If it is very dark, it may be that road lines outside one's own light cones cannot be recognised, since they cannot be seen. In the region further away, however, it may happen, in particular when there is oncoming traffic, that a portion of the road line can be seen again. If this portion lies on the extrapolated extension of one's own seen line, this too is an indicator of the presence of oncoming traffic.
As a result, according to the invention, it is made possible, even if it is very dark, for a travelling-ahead or oncoming vehicle to be recognised early in a very simple manner.
S
Advantageously, a vehicle having a driver assistance system for carrying out a method according to the invention is provided, in which -the driver assistance system comprises a system for providing information about road sections lying ahead, an image pickup system, an evaluating unit for evaluating images picked up by means of the image pickup system and a control unit for controlling the light function of the vehicle. In particular, the system for providing information aboutroad sections lying ahead, is a GPS navigation system.
In this case, the evaluating unit is designed to select at least one image area on the -basis of information about road sections lying ahead, to recognise a travelling-ahead or oncoming vehicle on the basis of information about road sections lying ahead and on the basis of at least a measurement of the brightness of the at least one selected image area, and to produce a control signal on recognition of a travelling-ahead or oncoming vehicle.
Furthermore, the control unit here is designed to control the light function of the vehicle on the basis of a control signal produced by the evaluating unit.
A vehicle having a vehicle assistance system does not need any relevant additional modules with high computing power to carry out the method according to the invention. Since a GPS navigation system, an image pickup system havihg an evaluating unit, and a control unit for evaluating control signals from the evaluating unit are present in a -conventional vehicle assistance system, nor are any additional systems to be provided or relevant modifications in the existing systems made in order to carry out the method according to the invention.
Advantageously, the evaluating unit is designed to * recognise a travelling-ahead or oncoming vehicle by means of at least a measurement of the brightness of at least one illuminated area of a section, e.g. of a road, in an image of the vehicle environment picked up by the image pickup system.
In particular, the evaluating unit according to the invention is designed to recognise a travelling-ahead or oncoming vehicle by means of a measurement of the brightness profile, in particular of the brightness profile produced by the light power of one's own vehicle, in the vehicle environment on the basis of an evaluation of the images picked up by the image pickup system.
In a particularly preferred embodiment of the invention, the evaluating unit is designed to recognise a travelling-ahead or oncothing vehicle by means of the use of predetermined, stored data about the brightness profile produced by the light power of one's own vehicle in the vehicle environment.
In particular, one's own field of view while driving without traffic or oncoming traffic can be determined in a simple and quick manner by evaluating the illuminated area on the road in the image. This is achieved, for example, with a corresponding gradient method with defined tolerance threshold or local histograms. Subsequently, the pixels per * image in which one's own light cone has an effect are known. Furthermore, the decreasing brightness in the distance can be determined. Both items of information may also be present &s a lookup table and applied in advance.
This enables quick access to the values of the brightnesses in the selected image areas produced by the light power of one's own vehicle.
Brief description of the drawings
Exemplary embodiments of the invention are described in detail below with teference to the accompanying drawings.
In the drawings: Figure 1 illustrates an image area selected for the evaluation, according to a first embodiment of the invention, which area is illuminated by a travelling and an oncoming vehicle, Figure 2 illustrates an area of the road selected for the evaluation in an image of the vehicle environment, according to a second embodiment of the invention, which area is illuminated by a travelling and an oncoming vehicle, Figure 3 shows an image area selected for the evaluation, according to a third embodiment of the invention, which area comprises a first road-line region of a recognised road line, which region is illuminated by a travelling and an oncoming vehicle, and Figure 4 shows two. image areas selected for the evaluation, according to a fourth embodiment
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of the invention, one illuminated image area lying with a first road-line region of a recognised road line inside the light cones of one's own travelling vehicle and one illuminated image area lying with a second road-line region of a recognised road line outside the light cones of one's own travelling vehicle and inside the light cones of an oncoming vehicle.
Embodiments of the invention Figure 1 shows an image area 10 selected for the evaluation, according toa first embodiment of the invention, which area is illuminated by a travelling vehicle (not illustrated) and an oncoming vehicle (not illustrated) According to the invention, image areas 10 which are of interest for a corresponding evaluation are selected on the basis of the knowledge of road sections 30 lying ahead. The knowledge of road sections 30 lying ahead is provided in particular by a GPS navigation system (not illustrated).
In Figure 1, the selected image area 10 is that which is illuminated by a vehicle (not illustrated) on a bend, which is travelling on the section 30 lying ahead opposite to one's own movement.
In the case of bends, the oncoming vehicle illuminates not only the road section 30 lying ahead but also neighbouring architecture, buildings (posts, crash barriers, signs..), vegetation and the like.
This illuminating effect is evaluated accordihg to the invention.
In Figure 1, the circled image area 10 of the image 20 picked up by the image pickup system (not illustrated) would be illuminated significantly more brightly if a * corresponding vehicle were approaching.
In Figure 1, an illuminated area of a sign 12 can be recognised in the image area 10.
Figure 2 shows an image area 10 selected for the evaluation, according to a second embodiment of the invention, the selected image area 10 illustrating an illuminated bend area of the road 30 in an image of the vehicle environment and being illuminated by a travelling vehicle 40 and an oncoming vehicle 50. Since the travelling * vehicle 40 and the oncoming vehicle 50 are still situated outside the bend, they cannot see each other.
The image area 15, in which bushes situated beside the bend in the road. are picked up and which is illuminated by the * oncoming vehicle 50 and only partially by the travelling vehicle 40, can also be included in the evaluation.
* Figure 3 shows an image area 10 selected for the evaluation, according to a third embodiment of the invention. In this case, the selected image area 10 comprises a first illuminated road-line region 16 of a recognised road line, which region is illuminated by a travelling vehicle 40 and an oncoming vehicle. 50.
Figure 4 shows two image areas 10, 11 selected for the evaluation, according to a fourth embodiment of the invention. For the evaluation according to the invention, an illuminated area 10 with a first road-line region 16 of a recogniSed road line inside the light cones of one's own travelling vehicle 40 and a further illuminated image area 21 with a second road-line region 18 of a recognised road line outside the light cones of one's own vehicle 40 and inside the light cones of the oncoming vehicle 50 are selected.
In the eialuation of the selected image areas 10, 11, it is checked whether the second road-line region 18 lies on the extrapolated extension 17 of the first road-line region 16.
Besides the foregoing written disclosure, reference is additionally made herewith to the illustration in Figures 1
to 4 for further disclosure of the invention.
Claims (12)
- Claims 1. A method for controlling the light function of a vehicle on the basis of an evaluation, by means of an evaluating unit, of images of the vehicle environment picked up by means, of an image pickup system, in which method on recognition of a travelling-ahead or oncoming vehicle on the basis of the evaluation of the images of the vehicle environment, a control signal is produced by the evaluating unit and is used to control the light function of the motor vehicle, characterised in that on the basis of information about road sections lying ahead, at least one image area is selected for the evaluation which can be' illuminated by a travelling-ahead or oncoming vehicle, and in that in the evaluation of the selected image area, the brightness of the selected image area is measured and is compared with a known brightness produced by the light power of one's own vehicle in the selected image. area, so that on registering of an increase in brightness of the measured brightness of the selected image area compared with the brightness produced by the light power of one's own vehicle in the selected image area, an oncoming or travelling-ahead vehicle is recognised.
- 2. The method according to Claim 1, characterised in that a selected image area corresponds to an illuminated area of a road section of the vehicle environment.
- 3. The method accotding to one of Claims 1 and 2, characterisedIin that a selected image area comprises at least a first road-line region of a recognised road line.
- 4. The method according to one of the preceding claims, characterised in that a selected image area lies inside or outside the light cones of one's own vehicle.
- 5. The method according to one of the preceding claims, characterised in that for the evaluation, at least one illuminated image area with a first road-line region of a recognised road line inside the light cones of one's own vehicle and at least one further illuminated image area with a second road-line region of a recognised road line outside the light cones of one's own vehicle are selected, in that in the evaluation of the selected image areas, the seccnd road-line region iscompared with an extension of the extrapolation of the first road-line region and in that if there is a correspondence between the second road-line region and an extrapolated extension of the first road-line region, an oncoming or travelling-ahead vehicle is recognised.
- 6. A vehicle having a driver assistance system for carrying out a method according to at least one of the preceding claims, characterised in that the driver assistance system comprises a system for providing information about road sections lying ahead, an image pidkup system, an evaluating unit for evaluating images picked up by means of the image pickup system and a control unit for controlling the light function of the vehicle, the evaluating unitSbeing designed to select at least one image area on the basis of information about road sections lying ahead, to recognise a travelling-ahead or oncoming vehicle on the basis of information about road sections lying ahead and on the basis of at least a measurement of the brightness of the at least one selected image area, and to produce a control signal * on recognition of a travelling-ahead or oncoming vehicle, and the control unit being designed to * control the light function of the vehicle on the basis of a control signal produced by the evaluating unit.
- 7. The vehicle according to Claim 6, characterised in that the evaluating unit is designed to recognise a travelling-ahead or oncoming vehicle by means of at least a measurement of the brightness of at least one illuminated area of a road section in an image of the vehicle environment picked up by the image pickup system.
- 8. The vehicle according to one of Claims 6 and 7, characterised in that the evaluating unit is designed to recognise a travelling-ahead or oncoming vehicle by means of at least a determination of the brightness profile, in particular of the brightness profile produced by. the light power of one' s own vehicle, in the vehicle environment on the basis of an evaluation of the images picked up by the image pickup system.
- 9. The vehicle according to one of Claims 6 to 8, characterised in that the evaluating unit is designed to recognise a travelling-ahead or oncoming vehicle on the basis of predetermined, stored data about the brightness profile produced by the light power of one's own vehicle in the vehicle environment.
- 10. The vehicle according to one of Claims 6 to B, characterised in that the system for providing information about road sections lying ahead is a GPS navigation system.
- 11. A method for controlling the light function of a vehicle substantially as herein described with reference to the accompanying drawings.
- 12. A vehicle having a driver assistance system substantially as herein descflbed with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011076341.4A DE102011076341B4 (en) | 2011-05-24 | 2011-05-24 | Method for controlling the light function of a vehicle and vehicle with a driver assistance system for carrying out the method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB201209295D0 GB201209295D0 (en) | 2012-07-04 |
| GB2491267A true GB2491267A (en) | 2012-11-28 |
| GB2491267B GB2491267B (en) | 2018-02-07 |
Family
ID=46546704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1209295.3A Expired - Fee Related GB2491267B (en) | 2011-05-24 | 2012-05-23 | Method for controlling the light function of a vehicle and vehicle having a driver assistance system for carrying out the method |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE102011076341B4 (en) |
| FR (1) | FR2975645B1 (en) |
| GB (1) | GB2491267B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340109A (en) * | 2013-07-25 | 2015-02-11 | 通用汽车环球科技运作有限责任公司 | Driver assistance system and operating procedure for the latter |
| GB2627443A (en) * | 2023-02-21 | 2024-08-28 | Mercedes Benz Group Ag | A method for predicting a presence of a moving object in the surroundings of a motor vehicle by an assistance system, a corresponding computer program product |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005138781A (en) * | 2003-11-10 | 2005-06-02 | Mitsubishi Motors Corp | Vehicle headlamp lighting device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10175478A (en) | 1996-12-18 | 1998-06-30 | Koito Mfg Co Ltd | Lighting fixture device for vehicle |
| DE19950504A1 (en) | 1999-10-20 | 2001-05-10 | Porsche Ag | Method and device for controlling the light distribution of a headlight arrangement of a vehicle |
| DE102006055906A1 (en) | 2005-12-05 | 2007-06-14 | Adc Automotive Distance Control Systems Gmbh | Retro reflector and vehicle light identifying method, involves classifying objects as retro-reflector or light, based on movement of light spots in image and time-dependant intensity gradient of spots and position of spots in image |
| DE102006055908A1 (en) | 2006-11-27 | 2008-05-29 | Adc Automotive Distance Control Systems Gmbh | Method for automatic high beam control |
| DE102008059630A1 (en) | 2008-11-28 | 2010-06-02 | Adc Automotive Distance Control Systems Gmbh | Method for detecting vehicle lights and retroreflectors with a camera system |
-
2011
- 2011-05-24 DE DE102011076341.4A patent/DE102011076341B4/en not_active Expired - Fee Related
-
2012
- 2012-05-23 GB GB1209295.3A patent/GB2491267B/en not_active Expired - Fee Related
- 2012-05-23 FR FR1254696A patent/FR2975645B1/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005138781A (en) * | 2003-11-10 | 2005-06-02 | Mitsubishi Motors Corp | Vehicle headlamp lighting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104340109A (en) * | 2013-07-25 | 2015-02-11 | 通用汽车环球科技运作有限责任公司 | Driver assistance system and operating procedure for the latter |
| GB2627443A (en) * | 2023-02-21 | 2024-08-28 | Mercedes Benz Group Ag | A method for predicting a presence of a moving object in the surroundings of a motor vehicle by an assistance system, a corresponding computer program product |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2491267B (en) | 2018-02-07 |
| DE102011076341B4 (en) | 2025-02-13 |
| FR2975645B1 (en) | 2017-11-24 |
| GB201209295D0 (en) | 2012-07-04 |
| FR2975645A1 (en) | 2012-11-30 |
| DE102011076341A1 (en) | 2012-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20250523 |