Generic path planning for real-time applications

• Published in: Proceedings Computer Graphics International, 2004 pp. 299 - 306
• Main Authors: Niederberger, C., Radovic, D., Gross, M.
• Format: Conference Proceeding
• Language: English
• Published: Los Alamitos CA IEEE 2004; IEEE Computer Society
• Subjects: Application software; Applied sciences; Approximation error; Artificial intelligence; Computer graphics; Computer science; control theory; systems; Cost function; Exact sciences and technology; Layout; Path planning; Pattern recognition. Digital image processing. Computational geometry; Shortest path problem; Path planning; Fast algorithm; Real time; Computer graphics; Virtual reality
• ISBN: 9780769521718; 0769521711
• ISSN: 1530-1052; 1558-3880
• DOI: 10.1109/CGI.2004.1309225

We present a fast and robust path planning algorithm for generic static terrains with polygonal obstacles. Our algorithm finds shorter, and therefore more intuitive paths than a traditional A * approach with a similar underlying graph. The presented algorithm is derived from A * and is modified to circumvent undecidable situations and unintuitive results. Additionally, we present two post-processing steps to enhance the quality and visual appearance of the resulting paths. The first method minimizes the number of waypoints in a path while the second method takes the slope of the terrain into account in order to generate visually more pleasing paths. We show that our algorithm is fast and, therefore, well suited for realtime applications, such as games or virtual environments