WO2008096234A3 - Method for switching the position of a vehicle's headlamps - Google Patents

Method for switching the position of a vehicle's headlamps Download PDF

Info

Publication number
WO2008096234A3
WO2008096234A3 PCT/IB2008/000254 IB2008000254W WO2008096234A3 WO 2008096234 A3 WO2008096234 A3 WO 2008096234A3 IB 2008000254 W IB2008000254 W IB 2008000254W WO 2008096234 A3 WO2008096234 A3 WO 2008096234A3
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
array
cells
cell
switching
Prior art date
Application number
PCT/IB2008/000254
Other languages
French (fr)
Other versions
WO2008096234A2 (en
Inventor
Gianni Bidini
Linda Barelli
Fabio Bonucci
Original Assignee
Uni Degli Studi Perugia
Gianni Bidini
Linda Barelli
Fabio Bonucci
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Uni Degli Studi Perugia, Gianni Bidini, Linda Barelli, Fabio Bonucci filed Critical Uni Degli Studi Perugia
Publication of WO2008096234A2 publication Critical patent/WO2008096234A2/en
Publication of WO2008096234A3 publication Critical patent/WO2008096234A3/en

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
    • B60Q1/14—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
    • 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
    • G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
    • G06V20/584—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads of vehicle lights or traffic lights
    • 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
    • B60Q2300/30—Indexing codes relating to the vehicle environment
    • B60Q2300/31—Atmospheric conditions
    • B60Q2300/314—Ambient light
    • 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

Abstract

Method for switching the headlights of a vehicle from full beam to the dipped position and vice versa, said vehicle being provided with at least one image acquisition sensor facing in the direction in which the vehicle is travelling and suitable for detecting the presence of at least one second vehicle, comprising the steps of: a. acquiring by means of said at least one acquisition sensor one or more successive images having a plurality of chromatic shade levels; b. splitting each of said at least one or more images acquired into an array of cells, each cell of said array of cells being associated with an intensity value which corresponds to the chromatic shade level identified for said one or more images during step a) of the method; c. processing each cell of said array of cells to identify the presence of said at least one second vehicle; d. switching the position of the headlights from full beam to the dipped position according to the presence of said at least one second vehicle detected during step c) of the method; characterised in that step c) of the method comprises the step of: e. calculating for each array of cells one or more areas of greater intensity according to the maximum intensity value identified on at least one cell of said array of cells; f. calculating the relative distance between said two vehicles by comparing the areas of greater intensity identified during step e) of the method with one or more previously defined reference values.
PCT/IB2008/000254 2007-02-09 2008-02-06 Method for switching the position of a vehicle's headlamps WO2008096234A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000243A ITMI20070243A1 (en) 2007-02-09 2007-02-09 METHOD FOR THE SWITCHING OF THE POSITION OF THE HEADLIGHTS OF A CAR
ITMI2007A000243 2007-02-09

Publications (2)

Publication Number Publication Date
WO2008096234A2 WO2008096234A2 (en) 2008-08-14
WO2008096234A3 true WO2008096234A3 (en) 2008-10-30

Family

ID=39591080

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/000254 WO2008096234A2 (en) 2007-02-09 2008-02-06 Method for switching the position of a vehicle's headlamps

Country Status (2)

Country Link
IT (1) ITMI20070243A1 (en)
WO (1) WO2008096234A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008005314A1 (en) * 2008-01-21 2009-07-23 Robert Bosch Gmbh Method and device for detecting a passing vehicle in the dark
DE102008048309A1 (en) * 2008-09-22 2010-04-01 Volkswagen Ag Method and device for detecting vehicles in the dark
FR3113387A1 (en) * 2020-07-20 2022-02-18 Valeo Vision Method of operation of automotive lighting device and automotive lighting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06276524A (en) * 1993-03-19 1994-09-30 Toyota Motor Corp Device for recognizing vehicle running in opposite direction
WO2004034183A2 (en) * 2002-08-21 2004-04-22 Gentex Corporation Image acquisition and processing methods for automatic vehicular exterior lighting control
EP1513103A2 (en) * 2003-08-11 2005-03-09 Hitachi, Ltd. Image processing system and vehicle control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06276524A (en) * 1993-03-19 1994-09-30 Toyota Motor Corp Device for recognizing vehicle running in opposite direction
WO2004034183A2 (en) * 2002-08-21 2004-04-22 Gentex Corporation Image acquisition and processing methods for automatic vehicular exterior lighting control
EP1513103A2 (en) * 2003-08-11 2005-03-09 Hitachi, Ltd. Image processing system and vehicle control system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DEFAUW R ET AL: "A system for small target detection, tracking, and classification", INTELLIGENT TRANSPORTATION SYSTEMS, 1999. PROCEEDINGS. 1999 IEEE/IEEJ/ JSAI INTERNATIONAL CONFERENCE ON TOKYO, JAPAN 5-8 OCT. 1999, PISCATAWAY, NJ, USA,IEEE, US, 5 October 1999 (1999-10-05), pages 639 - 644, XP010369949, ISBN: 978-0-7803-4975-9 *

Also Published As

Publication number Publication date
ITMI20070243A1 (en) 2008-08-10
WO2008096234A2 (en) 2008-08-14

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