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Liao, Wei-Hung; Huang, Tsung-Ming; Lin, Wen-Wei; Yueh, Mei-Heng
Journal of scientific computing, 2024/1, Letnik: 98, Številka: 1Journal Article
In this paper, we first derive a theoretical basis for spherical conformal parameterizations between a simply connected closed surface S and a unit sphere S 2 by minimizing the Dirichlet energy on C ¯ with stereographic projection. The Dirichlet energy can be rewritten as the sum of the energies associated with the southern and northern hemispheres and can be decreased under an equivalence relation by alternatingly solving the corresponding Laplacian equations. Based on this theoretical foundation, we develop a modified Dirichlet energy minimization with nonequivalence deflation for the computation of the spherical conformal parameterization between S and S 2 . In addition, under some mild conditions, we verify the asymptotically R-linear convergence of the proposed algorithm. Numerical experiments on various benchmarks confirm that the assumptions for convergence always hold and demonstrate the efficiency, reliability and robustness of the developed modified Dirichlet energy minimization.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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