Real-time lane-level traffic processing system and method
US-12174032-B2 · Dec 24, 2024 · US
Vehicle speed determination via infrared imaging
US8935082B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8935082-B2 |
| Application number | US-201213357034-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 24, 2012 |
| Priority date | Jan 24, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using an infrared camera which can be a single-band or multi-band camera which operates in an infrared wavelength band selected to enhance a contrast between the vehicle's tires and the road surface. For each image, a point of contact is determined where a same tire contacts the road surface. These points and the time interval separations are used to calculate the vehicle's speed. An alert signal is initiated to a traffic enforcement authority if the speed exceeds the road's speed limit.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for reducing speed error in determining the speed of a motor vehicle in a vehicle speed detection system, the method comprising: receiving a plurality of infrared images of a motor vehicle traveling on a road, each of said images being separated in time by a known interval, said infrared images having been captured using a single camera infrared imaging system operating in an infrared wavelength band spectrum range specifically selected such that a…
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- G08G1/052Primary
Physics · mapped topic
- G08G1/0116Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8935082B2 cover?
- A system and method which detects and uses a point of contact between a vehicle's tire and the pavement as a reference point to improve the accuracy of vehicle speed detection in a motorized vehicle speed detection system. In one embodiment, a plurality of infrared images of a moving vehicle are received. Each of the images is separated in time by known intervals. The images are captured using …
- Who is the assignee on this patent?
- Dalal Edul N, Wu Wencheng, Xerox Corp
- What technology area does this patent fall under?
- Primary CPC classification G08G1/052. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).