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25 August 1983 Medium Resolution Road Detector
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Abstract
A road-finding algorithm has been developed which utilizes a new method for detecting straight edges in a scene. The road finder has accurately identified roads in a variety of images such as infra-red and multispectral, forward and down-looking, and rural and urban environments. The algorithm is designed to locate roads that are between three and twelve pixels in width. The new edge detector takes advantage of the unique characteristics of the edge-preserving smoothing filter of Nagao and Matsuyama, which has been improved by using it in combination with median filters. Data reduction is guided by a knowledge of road characteristics - edges in the scene are efficiently reduced to instances of anti-parallel segments. Combinations of these segments are then evaluated with respect to several road scoring functions to determine the location and confidence of the best road in an image.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gene W. Dykes "Medium Resolution Road Detector", Proc. SPIE 0354, Airborne Reconnaissance VI, (25 August 1983); https://doi.org/10.1117/12.933966
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