METHOD FOR STOP SIGN LAW ENFORCEMENT USING MOTION VECTORS IN VIDEO STREAMS
First Claim
1. A method for enforcing traffic signal compliance, the method comprising:
- receiving video data from a camera;
defining a target area in the received video data;
identifying motion vectors in the video data;
associating a cluster of the motion vectors with a vehicle;
tracking a position of the vehicle across two or more video frames;
using the tracking results, determining whether the vehicle stops in the target area; and
,for the vehicle being determined as not stopping, signaling an occurrence of noncompliance.
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Accused Products
Abstract
A method for enforcing traffic signal compliance includes acquiring a series of temporal related image frames including a target area. Each image frame includes pixel data representative of the target area. The method includes generating one or more motion vectors between two or more of the image frames. The motion vectors are the type produced by compressing the pixel data associated with the two or more image frames. The method includes associating a cluster of motion vectors with a vehicle. The method further includes tracking a position of the vehicle across the two or more image frames. Using the tracking results, the method includes determining whether the vehicle stops in the target area. For the vehicle being determined as not stopping, the method includes signaling an occurrence of noncompliance.
34 Citations
24 Claims
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1. A method for enforcing traffic signal compliance, the method comprising:
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receiving video data from a camera; defining a target area in the received video data; identifying motion vectors in the video data; associating a cluster of the motion vectors with a vehicle; tracking a position of the vehicle across two or more video frames; using the tracking results, determining whether the vehicle stops in the target area; and
,for the vehicle being determined as not stopping, signaling an occurrence of noncompliance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for enforcing traffic signal compliance, the system comprising:
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a video capture device including; a video capture module adapted to acquire a series of temporal related image frames including a target area, each image frame including pixel data representative of the target area; a motion vector extraction module adapted to; generate one or more motion vectors between two or more of the image frames, wherein the motion vectors are the type produced in the process of compressing the pixel data associated with the two or more image frames, associate a cluster of motion vectors with a vehicle, and track a position of the vehicle across the two or more image frames; and
,a processor adapted to implement the modules; and
,the system further including; a violation determination module adapted to; use the tracking results to determine whether the vehicle stops in the target area, and for the vehicle being determined as not stopping, signal an occurrence of noncompliance; and a processor adapted to implement the violation determination module. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification