Automatic contour extraction for multiple objects based on Schroedinger transform of image
Liantang Lou, Ling Lu, Liguo Li, Wenliang Gao, Lingling Li, Zhongliang Fu · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2009
Analytical and numerical solutions of the Schroedinger Equation which was satisfied by the propagator P(b, a) , including all the paths contribution, are discussed. The definition of Schrödinger transform of image is first proposed. Exterior and interior of objects are obtained from Schroedinger transforms of original image and its inverse image. Using the bruteforce algorithm, sets of exterior and interior points are thinned. By finding pairs of exterior and interior points with the smallest distance between them, contours of multiple objects are extracted. Some experiments with simulated and real images are given.