Semiautomatic Extraction of Roads from Aerial Photographs.

摘要

Three different methods have been developed for the semiautomatic extraction of roads from aerial photographs. The interpreter has to initialize the procedures by defining parameter values and starting points on the roads. The results of the extraction procedures are displayed immediately for control and necessary correction by the interpreter. All three methods are described in principle, while one of them is described in detail. Test material for the methods had been provided by USAETL. Test results are shown and serve to explain the abilities and limits of the extraction methods. An assessment of the methods and discussions of further work conclude this report. (Author)