Abstract
Braking performance plays a vital role for the safety in vehicle operation, so the measurement of braking performance is very important. In this article, an automatic measurement method for braking...
Highlights
The braking performance of automobiles is an important factor contributing to safe driving, and measurement of braking performance is an important part of the vehicle detection
Braking performance measurement methods are divided into bench tests and road tests
A vehicle braking performance measurement system based on stereo vision is established and real car test results are documented
Summary
The braking performance of automobiles is an important factor contributing to safe driving, and measurement of braking performance is an important part of the vehicle detection. In the experiment of this article, the images of the vehicle braking process which were acquired by the left and right cameras were enhanced in order to facilitate feature extraction These steps lay the foundation for the subsequent stereo matching; they are key steps in acquiring the braking trajectory of the vehicle. When the centroid coordinates of the vehicle’s body on one image was obtained, we need to determine the corresponding point of the other image through stereo matching In this way, the 3D coordinates of the camera coordinate system can be calculated using parallax. Ð9Þ ð10Þ is adopted in this article, and the steps of the algorithm are as follows: the left and right cameras are used to capture two images and extract the feature points, and the candidate points’ matching relation is established using the epipolar geometry. The visual detection system and the experimental process and results are introduced
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