System and method for automatic exterior and interior inspection of vehicles

• US 8,155,384 B2
• Filed: 10/11/2005
• Issued: 04/10/2012
• Est. Priority Date: 10/11/2004
• Status: Expired due to Fees

• Current Assignee: Stratech Systems Limited (In Liquidation) (The Stratech Group Ltd.)
• Original Assignee: Stratech Systems Limited (In Liquidation) (The Stratech Group Ltd.)
• Inventors: Chew, Khien Meow David
• Primary Examiner(s): AZARIAN, SEYED H
• Application Number:
  US11/665,142
• Publication Number:
  US 20080136625A1
• Time in Patent Office: 2,373 Days
• Field of Search: 382/100, 382/103, 382/104, 382/105, 382/106, 382/143, 382/155, 382/168, 382/173, 382/181, 382/189, 382/203, 382/209, 382/224, 382/232, 382/254, 382/274, 382/276, 382284-291, 382/305, 382/312, 340/5.81, 340/907, 738/632.1, 348/143, 713/186, 177/25.14, 250/25.14
• US Class Current: 382/104
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects

Abstract

A system and method for automatic exterior and interior inspection of vehicles. The system comprises imaging means for capturing an image of the undercarriage of the vehicle as it is being driven into a secure area; imaging means for capturing an image of a luggage compartment of the vehicle as it is being driven into the secure area; database means for storing the captured images; and monitoring means operable to facilitate activation of an alarm based on the captured images.

Claims

1. A system for automatic exterior and interior inspection of vehicles, said system comprising:

optical imaging means for capturing an optical image of the undercarriage of the vehicle as it is being driven into a secure area;

a backscatter mode X-ray camera for capturing an X-ray image of a luggage compartment of the vehicle as it is being driven into the secure area said X-ray camera being activated when the back wheels of said vehicle are detected from said optical image;

a database for storing captured X-ray images;

weighing means for obtaining a two-dimensional weight distribution of the vehicle, and

monitoring means operable to facilitate activation of an alarm based on said captured X-ray images and said obtained two-dimensional weight distribution.

2. The system as claimed in claim 1, further comprising trace means for explosive trace detection of the vehicle interior by non-contact sampling of air surrounding the interior of vehicle as it is being driven into the secured area;

and

the monitoring means is further operable to facilitate activation of an alarm based on an input from the trace means.

3. The system as claimed in claim 1, further comprising processor means for comparing the captured images of the vehicle with one or more reference stored images stored in the database means;

and

the monitoring means is further operable to facilitate activation of an alarm based on an input from the processor means.

4. The system as claimed in claim 1, further comprising number plate recognition means for capturing number plate data of the vehicle being driven into the secured area;

and the monitoring means is further operable to facilitate activation of an alarm based on a comparison of the number plate data with reference data stored in the database.

5. The system as claimed in claim 4, wherein the number plate recognition means comprises a camera and a license plate recognition (LPR) system which processes the image of the vehicle number plate captured by the camera using computer vision based character recognition.

6. The system as claimed in claim 1, further comprising means for capturing the vehicle classification information of the vehicle being driven into the secured area;

and

the monitoring means is further operable to facilitate activation of an alarm based on a comparison of the vehicle classification data with reference to data stored in the database.

7. The system as claimed in claim 6, wherein the vehicle classification means comprises a camera and a vehicle classification system which processes the image of the vehicle captured by the camera using computer vision based vehicle feature extraction to extract the vehicle classification data.

8. The system as claimed in claim 1, further comprising means for capturing identification data about a driver who is driving the vehicle into the secured area;

and the monitoring means is further operable to facilitate activation of an alarm based on a comparison of the identification data with reference data stored in the database.

9. The system as claimed in claim 8, wherein the means for capturing identification data comprises one or more of a group consisting of a card reader, a camera, and a biometric scanner.

10. The system as claimed in claim 1, wherein the two-dimensional weight distribution is obtained by analyzing a two-dimensional weight distribution graph of the vehicle when entering the secure area and the system is operable to activate the alarm based on any abnormality in the two-dimensional weight distribution graph.

11. The system as claimed in claim 1, further comprising means for detecting approach of the vehicle into the secure area, and means for activating components of the system in response to an input from the means for detecting.

12. The system as claimed in claim 1, wherein the optical imaging means for capturing the optical image of the undercarriage of the vehicle comprises a reflection mode camera.

13. A method of automatic exterior and interior inspection of vehicles, said method comprising:

capturing an optical image of the undercarriage of the vehicle as it is being driven into a secure area;

detecting the back wheels of the vehicle from said optical image;

capturing an X-ray image of a luggage compartment of the vehicle upon detection of said back wheels;

storing the captured X-ray images;

obtaining a two-dimensional weight distribution of the vehicle; and

activating an alarm based on said captured X-ray images and said obtained two-dimensional weight distribution.

14. The method as claimed in claim 13, said method further comprising:

detecting explosive trace of the vehicle interior by non-contact sampling of air surrounding the interior of vehicle as it is being driven into the secured area; and

activating an alarm when an explosive trace is detected.