1. From engineering drawings to 3D CAD models: are we ready now?;Dori;Computer-Aided Design,1995
2. Hough PVC. A method and means for recognizing complex patterns. USA Patent 3,096,654, 1962.
3. From raster to vectors: extracting visual information from line drawings;Liu;Pattern Analysis and Applications,1999
4. Thinning methodologies—A comprehensive survey;Lam;IEEE Transactions on Pattern Analysis and Machine Intelligence,1992
5. SPTA: a proposed algorithm for thinning binary patterns;Naccache;IEEE Transactions on System, Man, and Cybernetics,1984