Soft x-ray diffraction of striated muscle
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
We study the class of rectilinear polygons, called X - Y polygons, with horizontal and vertical edges, which are frequently used as building blocks for very large-scale integrated (VLSI) circuit layout and wiring. In the paper we introduce the notion of convexity within the class of X - Y polygons and present efficient algorithms for computing the X - Y convex hulls of an X - Y polygon and of a set of X - Y polygons under various conditions. Unlike convex hulls in the Euclidean plane, the X - Y convex hull of a set of X - Y polygons may not exist. The condition under which the X - Y convex hull exists is given and an algorithm for testing if the given set of X - Y polygons satisfies the condition is also presented. © 1983 BIT Foundations.
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
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IEEE International Symposium on Information Theory - Proceedings
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ISIT 2007
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Ergodic Theory and Dynamical Systems