System and method for detecting and recording traffic law violation events

• US 10,643,467 B2
• Filed: 03/28/2010
• Issued: 05/05/2020
• Est. Priority Date: 03/28/2010
• Status: Active Grant

• Current Assignee: Redflex Traffic Systems Inc.
• Original Assignee: RoadMetric, Ltd. (Redflex Traffic Systems Inc.)
• Inventors: Alon, Yaniv
• Primary Examiner(s): Prince, Jessica M
• Application Number:
  US12/748,416
• Publication Number:
  US 20110234749A1
• Time in Patent Office: 3,691 Days
• Field of Search: 348 36
• CPC Class Codes: G07C 5/0866 the electronic data carrier being a digital video recorder in combination with video camera
• CPC Class Codes: G08G 1/054 photographing overspeeding vehicles

Abstract

A system for detecting and recording real-time law violations having an array of wide and narrow angled cameras providing a plurality of images of a substantially 360° field of view around a law enforcement unit, a recording unit for recording said images, an analyzing unit for detecting a law violation, a permanent storage unit for permanently storing a plurality of images of a law violation event and a reporting unit for issuing citations.

Claims

1. A system mountable in a host vehicle, the system comprising:

at least four cameras;

a left-looking camera, a right-looking camera, a forward-looking camera and a backward-looking camera, wherein fields-of-view of the left and right looking cameras are substantially wider than fields-of-view of the forward-looking and backward-looking cameras;

wherein the fields-of-view of the left-looking camera, the right-looking camera, the forward-looking camera and the backward-looking camera are horizontal angular extents of respective scenes, as imaged onto respective image sensors of the cameras;

a processor configured to operationally control said cameras to acquire and store in memory a plurality of images acquired by said cameras when mounted in the host vehicle, wherein the images stored in said memory acquired from at least one of the forward-looking camera and the backward-looking camera are used for identification of a license plate of a target vehicle, wherein the images stored in said memory acquired from at least one of the left-looking camera and the right-looking camera are used for tracking the progress of the target vehicle while continuously recording a traffic law violation by the target vehicle between positions behind the host vehicle, along side the host vehicle and in front of the host vehicle.

2. The system of claim 1, wherein said at least four cameras are positioned to provide at least 360°

total field of view horizontally around the host vehicle of the fields-of-view combined of said at least four cameras.

3. The system of claim 2, wherein said cameras are fixedly mountable on the vehicle.

4. The system of claim 1 further comprising:

a permanent storage unit for permanently storing said captured images.

5. The system of claim 1, wherein during operation of the system said processor is programmed to identify at least one imaged identification feature of an object viewed by at least one of said at least four cameras, wherein said at least one imaged identification feature is selected from the group consisting of:

a license plate;

a vehicle model;

a vehicle color; and

a face.

6. The system of claim 5, further comprising:

at least one narrow field-of-view camera, wherein the field-of-view of said narrow field-of-view camera is substantially less than smaller field-of-view of the forward-looking and backward-looking cameras, wherein said at least one narrow field-of-view camera is operationally coupled to said processor, wherein under control of said processor said at least one narrow field-of-view camera is operable to rotate horizontally in order to view said object.

7. The system of claim 6, wherein at least one of said cameras is operationally coupled to said at least one narrow field-of-view camera, and configured to provide a wide field of view image from said at least one camera for every narrow field-of-view image from said narrow field-of-view camera, wherein said wide field-of-view image is captured at substantially the same time as said narrow field-of-view image.

8. The system of claim 1, further comprising:

a recording unit, operatively attached to said processor, wherein said recording unit is configured to record at least one datum, selected from the group consisting of;

current speed of the host vehicle;

geographical location of the host vehicle;

current date; and

current time.

9. The system of claim 1, wherein said processor further includes:

a citation unit operable to report a law violation.

10. The system of claim 1, wherein said processor is configured to acquire images from the respective cameras with a time delay of less than twenty milliseconds.

11. The system of claim 1, further comprising:

a button configured for use by an operator in the host vehicle to perform at least one operation selected from the group consisting of;

signal a traffic law violation event, classify a traffic law violation event, save images to document a traffic violation event and notify a remote center with respect to a traffic law violation event.

12. The system claim 1, further comprising:

a memory configured to buffer images for a period of time from before a traffic law violation is detected to enable issuance of a traffic citation based on the buffered images.

13. A method comprising:

acquiring a plurality of images around a host vehicle from at least four cameras mounted in the host vehicle;

a left-looking camera, a right-looking camera, a forward-looking camera and a backward-looking camera, wherein fields-of-view of the left and right looking cameras are substantially wider than fields-of-view of the forward-looking and backward-looking cameras;

wherein the fields-of-view of the left-looking camera, the right-looking camera, the forward-looking camera and the backward-looking camera are horizontal angular extents of respective scenes, as imaged onto respective image sensors of the cameras;

recording said images from said cameras by a recording unit;

monitoring horizontally around the host vehicle with said at least four cameras;

detecting a target vehicle in the field-of-view of at least one of said at least four cameras;

storing images acquired from at least one of the forward-looking camera and the backward-looking camera for identification of a license plate of a target vehicle; and

storing images acquired from at least one of the left-looking camera and the right-looking camera for tracking the progress of the target vehicle for continuous recording of a traffic law violation by the target vehicle between positions behind the host vehicle, along side the host vehicle and in front of the host vehicle.

14. The method of claim 13 further comprising:

programming a processor to identify an imaged identification feature of the target vehicle, wherein the imaged identification feature is selected from the group consisting of;

the license plate of the target vehicle, the color of the target vehicle and the model of the target vehicle.

15. The method of claim 14 further comprising:

storing said imaged identification feature for subsequent identification of the target vehicle.

16. The method of claim 14, further comprising:

analyzing the images of the target vehicle thereby recognizing a traffic law violation performed by a driver of the target vehicle, wherein the traffic law violation is selected from the group consisting of;

changing lanes over a solid line lane marker;

changing of lanes without signaling;

illegally overtaking the host vehicle; and

tailgating the host vehicle.

17. The method of claim 13 further comprising:

enabling buffering of images for a period of time starting before a traffic law violation is detected; and

enabling issuance of a traffic citation based on the buffered images.

18. A system mountable in a vehicle, wherein the system includes:

at least four cameras mounted in the host vehicle;

a left-looking camera, a right looking camera, a forward-looking camera and a backward looking camera, wherein fields-of-view of the left and right looking cameras are substantially wider than fields-of-view of the forward-looking and backward-looking cameras, wherein the system is configured to perform the method of claim 13.