System and method for vehicle occupancy detection using smart illumination

• US 9,111,136 B2
• Filed: 11/15/2012
• Issued: 08/18/2015
• Est. Priority Date: 04/24/2012
• Status: Active Grant

• Current Assignee: Conduent Business Services, LLC (Conduent, Inc.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Paul, Peter, Islam, Abu
• Primary Examiner(s): Harold, Jefferey
• Assistant Examiner(s): Rahman, Mustafizur
• Application Number:
  US13/677,548
• Publication Number:
  US 20130278768A1
• Time in Patent Office: 1,006 Days
• Field of Search: 348/148, 348/149, 348/153, 348/159, 348/142, 348/143, 348/118, 348/116, 348/115, 348/114, 348/14.07, 348/47, 348/48, 348/50, 348/52, 348/201, 348/526, 348/719, 348/837, 701/1, 701/29.6, 701/49, 701/444, 701/69, 703/6, 703/8, 382/103, 382/104, 382/107, 382/254
• US Class Current: 1/1
• CPC Class Codes: G06V 40/103 Static body considered as a whole, e.g. static pedestrian or occupant recognition
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G08G 1/0175 by photographing vehicles, e.g. when violating traffic rules

Abstract

A multi-view imaging system for Vehicle Occupancy Detection (VOD) including a gantry mounted camera and illuminator to view the front seat of vehicles, and a roadside mounted camera and illuminator to view the rear seat of vehicles. The system controls the illuminator units to preserve/maximize bulb life, thus reducing the service cost of the system. In one embodiment, a target vehicle'"'"'s license plate is read. If the vehicle is on a pre-approved list to use the HOV lane, then no further interrogation of the vehicle is performed. If the vehicle is not on the pre-approved list, then the front seats are interrogated by a camera and illuminator located on an overhead gantry as the vehicle continues down the highway. If the front seat analysis indicates that the passenger seat is not occupied, then the system interrogates the rear seats using a separate camera and illuminator located on the roadside.

Claims

1. A system for vehicle occupancy detection comprising:

at least one vehicle identification scanner for determining the identification of a vehicle;

at least one imaging unit for capturing image data used to determine whether a passenger is present in the vehicle; and

a central processing unit in communication with the at least one vehicle identification scanner and the at least one imaging unit;

wherein the at least one vehicle identification scanner is adapted to transmit information relating to a scanned vehicle to the central processing unit;

wherein the central processing unit is configured to;

compare the information received from the vehicle identification scanner to a list of pre-approved vehicles and prevent operation of the at least one imaging unit if a match is found and, if no match is found, enables the trigger of the at least one imaging unit to capture image data pertaining to passenger areas of the vehicle to be used to determine whether a passenger is present in the vehicle.

2. A system as set forth in claim 1, wherein the at least one vehicle identification scanner includes a license plate scanner or an identification tag scanner.

3. A system as set forth in claim 1, wherein the at least one imaging unit includes a camera and an illuminator.

4. A system as set forth in claim 1, wherein at least one of the vehicle identification scanner and the at least one imaging unit is mountable to an overhead gantry extending over a lane of a roadway.

5. A system as set forth in claim 4, wherein the vehicle identification scanner is spaced apart from the at least one imaging unit a distance such that a vehicle can be scanned by the vehicle identification scanner prior to approaching the at least one imaging unit.

6. A system as set forth in claim 5, wherein the distance is between 30 feet and 200 feet.

7. A system as set forth in claim 1, further comprising at least one device for sensing a vehicle, the device configured to trigger at least one of the vehicle identification scanner and imaging unit.

8. A system as set forth in claim 7, wherein the at least one device for sensing a vehicle includes a wire loop.

9. A system as set forth in claim 1, further comprising a communication interface for transmitting information from at least one of the vehicle identification scanner and the imaging unit to a third party.

10. A system as set forth in claim 1, further comprising a first imaging unit and a second imaging unit, each imaging unit including an illuminator, wherein the first and second imaging units are spaced apart from each other, and wherein the first imaging unit is activated when no match is found to said list of pre-approved vehicles to detect whether a passenger is in a first passenger area of the vehicle, and wherein the second imaging unit is activated to determine if a passenger is in a second passenger area of the vehicle.

11. A system as set forth in claim 10, wherein the second imaging unit is activated only if no passenger is detected by the first imaging unit.

12. A system as set forth in claim 1, further comprising at least two imaging units, each of the at least two imaging units and the vehicle identification scanner being spaced apart from each other along a lane of a highway along a direction of travel such that a vehicle passes the vehicle identification scanner prior to the imaging units.

13. A system as set forth in claim 1, further comprising at least two imaging units, the vehicle identification scanner and one of the imaging units being located at a common position along a lane of a highway, the other imaging unit being spaced downstream from the vehicle identification scanner and the imaging unit along a direction of travel of the highway such that a vehicle passes the vehicle identification scanner prior to the other imaging unit.

14. A method of detecting occupants of a vehicle comprising the steps of:

providing at least one vehicle identification scanner for determining the identification of a vehicle;

providing at least one imaging unit for capturing image data used to determine whether a passenger is present in the vehicle

identifying a vehicle using the at least one vehicle identification scanner;

comparing the vehicle based on its identity to a list of vehicles on a preapproved list and, if so, preventing operation of the at least one imaging unit, otherwise

scanning a first occupant space of the vehicle with the at least one vehicle identification scanner to detect an occupant other than a driver and, if so, taking no further action, otherwise

scanning a second occupant space of the vehicle with the at least one vehicle identification scanner to detect an occupant other than a driver.

15. A method as set forth in claim 14, further comprising generating an evidence package including data obtained in at least one of the steps set forth in claim 14.

16. A method as set forth in claim 14, wherein the identifying step includes scanning at least one of a license plate or an identification tag including identification information.

17. A method as set forth in claim 14, wherein the scanning a first occupancy space includes capturing an image of a front seat of the vehicle using a first imaging unit including an illuminator.

18. A method as set forth in claim 17, wherein the scanning a second occupancy space includes capturing an image of a rear seat of the vehicle using a second imaging unit including an illuminator.

19. A method as set forth in claim 18, wherein the first imaging device unit includes a side mounted imaging unit and the second imaging device unit includes an overhead mounted imaging unit.

20. A method as set forth in claim 14, further comprising transmitting the evidence package to a remote location for review.