Shigeo Takahashi Kenichi Yoshida Kenji Shimada Tomoyuki Nishita Occlusion-Free Animation of Driving Routes for Car Navigation Systems. 1141-1148 2006 12 IEEE Trans. Vis. Comput. Graph. 5 http://doi.ieeecomputersociety.org/10.1109/TVCG.2006.167 db/journals/tvcg/tvcg12.html#TakahashiYSN06