1. Distance functions on digital pictures;Rosenfeld;Pattern Recognit.,1968
2. Euclidean distance mapping;Danielsson;Comput. Graphics Image Process.,1980
3. Distance transformations in arbitrary dimensions;Borgefors;Comput. Vision Graphics Image Process.,1984
4. H. Yamada, Complete Euclidean distance transformation by parallel operation, in Proc. 7th International Conference on Pattern Recognition, Montreal, 1984, pp. 69–71.
5. Distance transformations in digital images;Borgefors;Comput. Vision Graphics Image Process.,1986