碩士 / 國立交通大學 / 多媒體工程研究所 / 99 / This work proposes a vision-based navigation system for visually impaired. This system provides the following functions: speech interface and navigation guidance including path planning, point-to-point guidance, and path monitoring. We use the following method to implement the system. First, we construct a panoramic database at a set of specific locations. Next, we use the Dijkstra's algorithm to calculate the shortest path according to the current position and the destination of the user. The point-to-point guidance contains the remaining distance computed from the GPS locations, and the turning degree computed by image matching method, the SURF algorithm. Finally, we use the digital compass and GPS to monitor the facing direction of the user. The results show that the proposed vision-based navigation system is more stable then digital compass. We hope our system can improve the daily lives for visually impaired people.
| Identifer | oai:union.ndltd.org:TW/099NCTU5641016 |
| Date | January 2011 |
| Creators | Chang, Xiao-Yuan, 張筱苑 |
| Contributors | Chen, Yong-Sheng, 陳永昇 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 46 |
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