Use of medial axis transforms for computing normals at boundary points

Aswatha Kumar, 1996, Representation of 2D and 3D binary images using medial circles and spheres, Int. J. Pattern Recognit. Artif. Intell., 10, 365, 10.1142/S0218001496000256 Bennet, 1975, On the measurement of curvature in a quantized environment, IEEE Trans. Comput., 24, 803, 10.1109/T-C.1975.224312 Blum, 1967, A transformation for extracting new descriptors of shape, 362 Das, 1990, Octagonal distances for digital pictures, Inf. Sci., 50, 123, 10.1016/0020-0255(90)90008-X Mukherjee, 1999, Discrete shading of three dimensional objects from medial axis transform, Pattern Recognit. Lett., 20, 1533, 10.1016/S0167-8655(99)00122-1 Mukherjee, 2000, Fast computation of cross-sections of three-dimensional objects, Pattern Recognit. Lett., 21, 605, 10.1016/S0167-8655(00)00025-8 Mukherjee, 2000, On approximating euclidean metrics by digital distances in 2D and 3D, Pattern Recognit. Lett., 21, 573, 10.1016/S0167-8655(00)00022-2 Rosenfeld, 1973, Angle detection on digital curve, IEEE Trans. Comput., 22, 805, 10.1109/TC.1973.5009188 Rosenfeld, 1968, Distance functions in digital pictures, Pattern Recognit., 1, 33, 10.1016/0031-3203(68)90013-7 Tsai, 1994, Curve fitting approach for tangent angle and curvature measurements, Pattern Recognit., 27, 699, 10.1016/0031-3203(94)90048-5