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The Optimal Path algorithm Analysis of GPS Navigation in Taxi Management System Based on a＊ algorithm

International English Education Research 2013年第12期 10-12页

The optimal path algorithm analysis of GPS navigation in taxi management system based on a＊ algorithm was introduced in this paper. Through improving the traditional Dijkstra algorithm and avoiding problems such as ＂time-consuming and low efficiency＂ in Dijkstra algorithm with traversal search for each node, a＊ algorithm could help the taxi find the optimal path and bring convenience for traffic management.

关键词： GPS navigation a＊ algorithm Dijkstra algorithm the optimal path

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Intelligent optimization of seam-line finding for orthophoto mosaicking with LiDAR point clouds

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第5期12卷 417-429页

作者： Hong-chao MA Jie SUN School of Remote Sensing Wuhan University Wuhan 430079 China State Key Lab for Surveying Mapping and Remote Sensing Wuhan University Wuhan 430079 China

A detailed study was carried out to find optimal seam-lines for mosaicking of images acquired by an airborne light detection and ranging (LiDAR) *** ground objects labeled as obstacles can be identified by delineating black holes from filtered point clouds obtained by filtering the raw laser scanning *** innovative A algorithm is proposed that can automatically make the seam-lines keep away from these obstacles in the registered *** method can intelligently optimize the selection of seam-lines and improve the quality of orthophotos.A simulated grid image was first used to analyze the effect of different heuristic functions on path *** subsets of LiDAR data from Xi'an,Dunhuang,and Changyang in Northwest China were obtained.A quantitative method including pixel intensity,hue,and texture was *** our proposed method,9.4%,8.7%,and 9.8% improvements were achieved in Dunhuang,Xi'an,and Changyang,respectively.

关键词： Light detection and ranging （EiDAR） Filter a＊ algorithm Mosaicking Seam-line

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