A novel system developed based on image processing techniques for dynamical measurement of tire-surface contact area. (June 2019)

• Record Type: Journal Article
• Authors: Derafshpour, Sajjad; Valizadeh, Morteza; Mardani, Aref; Tamaddoni Saray, Masoud
• Is Part Of: Measurement. Volume 139(2019)
• Page Start: 270
• Page End: 276
• Publication Date: 2019-06
• Subjects: Contact area -- Dynamic contact pressure -- Image processing -- Soil bin -- Metal box; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2019.02.074
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: A new system based on image processing was introduced to measure contact area. The tire contact area were dynamically monitored by pouring white liquid. Contact and non-contact areas were made separable using an appropriate processing. Real time assessment of dynamic contact area was accomplished. 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.