Qin, S. F.Sun, GuangminWright, D. K.Lim, S.Khan, U.Mao, C.Joaquim Armando Pires Jorge and Takeo Igarashi2014-01-272014-01-2720053-905673-30-41812-3503https://doi.org/10.2312/SBM/SBM05/119-126This paper presents a novel free-form surface recognition method from 2D freehand sketching. The approach is based on the Radial basis function (RBF), an artificial intelligence technique. A simple three-layered network has been designed and constructed. After training and testing with two types of surfaces (four sided boundary surfaces and four close section surfaces), it has been shown that the method is useful in freeform surface recognition. The testing results are very satisfactory.Categories and Subject Descriptors (according to ACM CSS): H.5.2 [Information Interfaces and Presentation]: Graphical user interfaces (GUI); I.2.10 [Artificial Intelligence]: surface modelling.