Abstract
Contact area is an important criterion to evaluate road and off-road vehicles performance. Previous researches have measured and investigated the static aspect of the contact area. In this research, a novel system is presented to dynamically measure this criterion. A metal box with a glass surface is employed and a white liquid is poured on the glass. A digital camera is also placed under the box, which captures a video when the tire passes over it. Frames of the video are segmented into ‘touching’ and ‘non-touching’ regions by using appropriate pre-processing, thresholding, and post-processing techniques. The area of touching regions is automatically measured. Experiments revealed that the proposed system is a precision instrument for real-time measurement of the dynamic contact area.
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