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Precision shape modeling by z-map model  

Park, Jung-Whan (School of Mechanical Engineering, Yeungnam University)
Chung, Yun-Chan (Cubic Technology Research Center)
Choi, Byoung-Kyn (Department of I.E., Korea Advanced Institute of Science & Technology)
Publication Information
International Journal of Precision Engineering and Manufacturing / v.3, no.1, 2002 , pp. 49-56 More about this Journal
Abstract
The Z-map is a special farm of discrete non-parametric representation in which the height values at grid points on the xy-plane are stored as a 2D array z[ij]. While the z-map is the simplest farm of representing sculptured surfaces and is the most versatile scheme for modeling non-parametric objects, its practical application in industry (eg, tool-path generation) has aroused much controversy over its weaknesses, namely its inaccuracy, singularity (eg, vertical wall), and some excessive storage needs. Much research or the application of the z-map can be found in various articles, however, research on the systematic analysis of sculptured surface shape representation via the z-map model is rather rare. Presented in this paper are the following: shape modeling power of the simple z-map model, exact (within tolerance) z-map representation of sculptured surfaces which have some feature-shapes such as vertical-walls and real sharp-edges by adopting some complementary z-map models, and some application examples.
Keywords
shape modeling; z-map; CZ-map; EZ-map;
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Times Cited By KSCI : 1  (Citation Analysis)
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