Use of shadows for extracting buildings in aerial images
Computer Vision, Graphics, and Image Processing
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Computer Vision and Image Understanding
Machine Vision and Applications
Detection and Modeling of Buildings from Multiple Aerial Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Mustererkennung 1995, 17. DAGM-Symposium
Image Processing, Analysis, and Machine Vision
Image Processing, Analysis, and Machine Vision
Approximate convex decomposition of polyhedra and its applications
Computer Aided Geometric Design
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In this paper we define a function R(P) which is defined for any polygon P and which maps a given polygon P into a number from the interval (0, 1]. The number R(P) can be used as an estimate of the rectilinearity of P. The mapping R(P) has the following desirable properties: - any polygon P has the estimated rectilinearity R(P) which is a number from (0, 1]; - R(P)=1 if and only if P is a rectilinear polygon, i.e., all interior angles of P belong to the set {驴/2, 3驴/2}; - inf P驴驴 R(P) = 0, where 驴 denotes the set of all polygons; - a polygon's rectilinearity measure is invariant under similarity transformations. A simple procedure for computing R(P) for a given polygon P is described as well.