Improving the Quality of Non-Holonomic Motion by Hybridizing C-PRM Paths

TL;DR

This paper enhances non-holonomic motion planning by hybridizing C-PRM with path-hybridization, improving path quality across multiple measures while maintaining near real-time performance.

Contribution

It introduces a novel hybrid approach combining C-PRM and path-hybridization for high-quality non-holonomic paths, optimized for real-time applications.

Findings

Improved path quality with respect to length, smoothness, and clearance.

Achieved near real-time performance through code optimizations.

Potential for real-time high-quality car-like motion planning.

Abstract

Sampling-based motion planners are an effective means for generating collision-free motion paths. However, the quality of these motion paths, with respect to different quality measures such as path length, clearance, smoothness or energy, is often notoriously low. This problem is accentuated in the case of non-holonomic sampling-based motion planning, in which the space of feasible motion trajectories is restricted. In this study, we combine the C-PRM algorithm by Song and Amato with our recently introduced path-hybridization approach, for creating high quality non-holonomic motion paths, with combinations of several different quality measures such as path length, smoothness or clearance, as well as the number of reverse car motions. Our implementation includes a variety of code optimizations that result in nearly real-time performance, and which we believe can be extended with further optimizations to a real-time tool for the planning of high-quality car-like motion.