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Brake Pedal Displacement Measuring System based on Machine Vision

Author(s): Chang Wang | Jiahe Qin | Minghua Guo

Journal: Journal of Multimedia
ISSN 1796-2048

Volume: 8;
Issue: 5;
Start page: 632;
Date: 2013;
Original page

Keywords: Displacement of Brake Pedal | Machine Vision | Edge Extraction | Wavelet Transform | Least Square Method

Displacement of brake pedal was an important characteristic of driving behavior. This paper proposed a displacement measure algorithm based on machine vision. Image of brake pedal was captured by camera from left side, and images were processed in industry computer. Firstly, average smooth algorithm and wavelet transform algorithm were used to smooth the original image consecutively. Then, edge extracting method which combined Roberts’s operator with wavelet analysis was used to identify the edge of brake pedal. At last, least square method was adopted to recognize the characteristic line of brake pedal’s displacement. The experimental results demonstrated that the proposed method takes the advantages of Roberts’s operator and wavelet transform, it can obtain better measurement result as well as linear displacement sensors
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