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Chang Yong Han
Researcher at Kyung Hee University
Publications - 24
Citations - 508
Chang Yong Han is an academic researcher from Kyung Hee University. The author has contributed to research in topics: Medial axis & Minkowski space. The author has an hindex of 10, co-authored 24 publications receiving 468 citations. Previous affiliations of Chang Yong Han include University of California & Seoul National University.
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Medial axis transform and offset curves by Minkowski Pythagorean hodograph curves
TL;DR: Using the new spline, called the Minkowski Pythagorean hodograph curve which was recently introduced, the algorithm is based on the domain decomposition scheme which reduces a complicated domain into a union of simple subdomains each of which is very easy to handle.
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Euler–Rodrigues frames on spatial Pythagorean-hodograph curves
Hyeong In Choi,Chang Yong Han +1 more
TL;DR: It is proved that the minimum degree of non-planar PH curves whose ERF is an rotation-minimizing frame is seven, and the Euler–Rodrigues frame is equivalent to the Frenet frame on cubic PH curves.
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Characterization and construction of helical polynomial space curves
TL;DR: In this article, two types of PH quintic helix are identified: (i) the "monotone-helical" PH quintics, in which a scalar quadratic factors out of the hodograph, and the tangent exhibits a consistent sense of rotation about the axis; and (ii) general helical PH cubics, which possess irreducible hodographs, and may suffer reversals in the sense of tangent rotation.
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Rational approximation schemes for rotation-minimizing frames on Pythagorean-hodograph curves
Rida T. Farouki,Chang Yong Han +1 more
TL;DR: The function that describes the angular deviation between the RMF and ERF is derived in closed form, and is approximated by Pade (rational Hermite) interpolation, which furnish compact approximations of excellent accuracy, amenable to use in a variety of applications.
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Nonexistence of rational rotation-minimizing frames on cubic curves
TL;DR: There is no rational rotation-minimizing frame (RMF) along any non-planar regular cubic polynomial curve and it is proved its nonexistence in the case of cubic curves.