Feature-Based Reasoning Trail Detection
Christy Chism, John Wright, Jeff Umbarger · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1990
Map data can provide contextual cues that enhance ATR system performance. Maps, however, sometimes lack scene cues such as secondary trails. In these instances, trail detection requires map-independent approaches. Therefore, we have developed a feature-based trail detection algorithm. Its low-level function extracts features (edges, lines) that characterize trail geometry. A high-level function evaluates scene features, ranks them according to their trail-like attributes, and applies rules. Rules interpret complicated scenarios such as partial trail occlusion and high trail curvature. The algorithm demonstrates robust performance on both FLIR and TV imagery.