Dynamic Environment Exploration Using a Virtual White Cane

D. Yuan, R. Manduchi
2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05)  
The virtual white cane is a range sensing device based on active triangulation, that can measure distances at a rate of 15 measurements/second. A blind person can use this device for sensing the environment, pointing it as if it was a flashlight. Beside measuring distances, this device can detect surface discontinuities, such as the foot of a wall, a step, or a drop-off. This is obtained by analyzing the range data collected as the user swings the device around, tracking planar patches and
more » ... ar patches and finding discontinuities. In this paper we briefly describe the range sensing device, and present an online surface tracking algorithm, based on a Jump-Markov model. We show experimental results proving the robustness of the tracking system in real-world conditions.
doi:10.1109/cvpr.2005.136 dblp:conf/cvpr/YuanM05 fatcat:gzbfu7rw65hchm5tkk5bpkrgce