Method and apparatus to monitor vehicular traffic

• US 20070076918A1
• Filed: 10/04/2005
• Published: 04/05/2007
• Est. Priority Date: 10/04/2005
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Dai, Xiaowen, Roesser, Robert
• Granted Patent: US 7,518,260 B2
• Time in Patent Office: Days
• US Class Current: 382/104
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69

Abstract

A vehicle traffic monitoring apparatus includes an imaging device; an image processing device; a global positioning device; and, a wireless communications system. The image processing device includes a computer program to process a data stream from the imaging device, to recognize individual vehicles substantially in view of the vehicle; and, quantify motion of the recognized individual vehicles. A second data stream is a signal output from the image processing device and includes code representing the recognized individual vehicles in view of the vehicle, quantified motion of the recognized vehicles; and vehicle position data from the global positioning system receiver. The wireless communications device receives the second data stream and communicates it a remote device. Localized traffic is monitored in metrics of traffic density, congestion, and, turbulence.

Claims

1. Vehicle traffic monitoring apparatus, comprising:

a. an imaging device mounted to a host vehicle;

b. an image processing device;

c. a global positioning system receiver; and

,

d. a wireless communications system.

2. The apparatus of claim 1, wherein the image processing device comprises:

a remote storage medium having a computer program encoded therein for effecting a method to process a first data stream comprising a signal from the imaging device;

the computer program comprising;

code to recognize presence of individual vehicles substantially in view of the imaging device; and

,

code to quantify motion of the recognized individual vehicles.

3. The apparatus of claim 2, wherein a second data stream is output from the image processing device, the second data stream comprising:

a. code representing the recognized individual vehicles substantially in view of the imaging device;

b. code representing quantified motions of the recognized individual vehicles; and

,

c. code representing vehicle position data output from the global positioning system receiver.

4. The apparatus of claim 3, wherein the wireless communications device is operable to:

a. receive the second data stream from the image processing device; and

,

b. communicate the second data stream to a remote device.

5. The apparatus of claim 2, wherein the computer program further comprises:

code to categorize localized traffic in metrics of traffic density, congestion and turbulence.

6. The apparatus of claim 1, wherein the imaging device is operable to capture images representing mobile vehicles substantially in front of the host vehicle and traveling in the same direction.

7. The apparatus of claim 6, wherein the imaging device is further operable to capture images representing mobile vehicles substantially along a side of the host vehicle and traveling in the same direction.

8. The apparatus of claim 6, wherein the imaging device is further operable to capture images representing stationary vehicles on and near highway surfaces.

9. The apparatus of claim 1, wherein the wireless communications system comprises a dedicated short-range communications system operable to communicate with a remote receiver.

10. The apparatus of claim 1, wherein the wireless communications system comprises a cellular data transceiver operable to communicate with a remote receiver.

11. The apparatus of claim 1, wherein the imaging device, the image processing device, the global positioning system receiver and the wireless communications system comprise a system substantially integrated into a vehicle control system.

12. The apparatus of claim 11, further comprising:

the digital imaging device, the digital image processing device, the global positioning system receiver and the dedicated short-range communications device operable to communicate via a local area network on-board the host vehicle.

13. The apparatus of claim 1, wherein the imaging device, the image processing device, the global positioning system receiver, and the wireless communications system comprise a dedicated, stand-alone device readily removable from the vehicle.

14. Method to monitor localized vehicular traffic, comprising:

a. equipping a host vehicle operable to travel on highway surfaces with an imaging device, an image processing device, a global positioning system receiver, and a wireless communications system;

b. processing a first data stream, comprising a signal from the imaging device;

c. creating a second data stream; and

,

d. communicating the second data stream to a remote device.

15. The method of claim 14, wherein processing a first data stream comprises:

a. recognizing individual vehicles substantially in view of the imaging device; and

,

b. quantifying motion of the recognized individual vehicles.

16. The method of claim 15, further comprising:

categorizing localized traffic in metrics of traffic density, congestion, and, turbulence.

17. The method of claim 14, wherein creating a second data stream comprises creating a data stream comprising information interpretable as:

recognized individual vehicles substantially in view of the imaging device;

quantified motion of the recognized individual vehicles; and

, vehicle position data output from the global positioning system receiver.

18. The method of claim 14, wherein the signal from the imaging device comprises images representing mobile vehicles substantially in front of the host vehicle and traveling in the same direction.

19. The method of claim 18, wherein the signal from the imaging device further comprises images representing mobile vehicles substantially along a side of the host vehicle and traveling in the same direction.

20. The method of claim 18, wherein the signal from the imaging device comprises images representing stationary vehicles on and near highway surfaces.