期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：49
期号：3
出版社：Journal of Theoretical and Applied
摘要：A stereo vision method is presented to measure wheelbase, wheelbase difference and wheel static radius, and the key is to locate the wheel center. The aluminum alloy wheel hub is the research subject in the method, and its contour is extracted and fitted as an ellipse curve. To improve the matching precision, a new un-tangent constraint is adopted based on which stereo matching is carried out. Then a spatial circle projection algorithm with low time complexity and high accuracy is proposed to reconstruct 3D coordinates of wheel center. After that, the measurement models of wheelbase, wheelbase difference and wheel static radius is described in details. At last experiments are performed to verify our proposed method. In experiments, wheelbase, wheelbase difference and wheel static radius of three different cars are measured, and then the results are compared to manual measurement results. Experiments have proved that the proposed method could acquire the wheelbase, wheelbase difference and wheel static radius fast and accurately.
关键词：Wheelbase Difference; Static Radius; Wheel Center; Stereo Vision; 3D Reconstruction
