Abstract
For a given x-monotone polygonal curve each of whose edge lengths is between \(\underline{l}\) and \(2\underline{l}\), we consider the problem of approximating it by another x-monotone polygonal curve using points of a square grid so that there exists a small number of different edge lengths and every edge length is between \(\underline{l}\) and \(\beta \underline{l}\), where β is a given parameter satisfying 1≤β≤2. Our first algorithm computes an approximate polygonal curve using fixed square grid points in O((n/α 4)log(n/α)) time. Based on this, our second algorithm finds an approximate polygonal curve as well as an optimal grid placement simultaneously in O((n 3/α 12)log2(n/α)) time, where α is a parameter that controls the closeness of approximation. Based on the approximate polygonal curve, we shall give an algorithm for finding a uniform triangular mesh for an x-monotone polygon with a constant number of different edge lengths.
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References
Agarwal, P.K., Aronov, B., Sharir, M., Suri, S.: Selecting distances in the plane. Algorithmica 9(5), 495–514 (1993)
Agarwal, P.K., Har-Peled, S., Mustafa, N.H., Wang, Y.: Near-linear time approximation algorithms for curve simplification. In: Möhring, R.H., Raman, R. (eds.) ESA 2002. LNCS, vol. 2461, pp. 29–41. Springer, Heidelberg (2002)
Agarwal, P.K., Sharir, M., Toledo, S.: Applications of parametric searching in geometric optimization
Agarwal, P.K., Varadarajan, K.R.: Efficient algorithms for approximating polygonal chains. Discrete & Comp., Geom. 23(2), 273–291 (2000)
Aronov, B., Asano, T., Katoh, N., Mehlhorn, K., Tokuyama, T.: Polyline fitting of planar points under min-sum criteria. In: Fleischer, R., Trippen, G. (eds.) ISAAC 2004. LNCS, vol. 3341, pp. 77–88. Springer, Heidelberg (2004); Int. J. of Comput. Geom. & Appl. (to appear)
Chan, W.S., Chin, F.: Approximation of polygonal curves with minimum number of line segments or minimum error. Int. J. Comput. Geometry Appl. 6(1), 59–77 (1996)
Chen, D.Z., Daescu, O.: Space-efficient algorithms for approximating polygonal curves in two-dimensional space. Int. J. Comput. Geometry Appl. 13(2), 95–111 (2003)
Edelsbrunner, H., Guibas, L.J., Pach, J., Pollack, R., Seidel, R., Sharir, M.: Arrangements of curves in the plane - topology, combinatorics and algorithms. Theor. Comput. Sci. 92(2), 319–336 (1992)
Goodrich, M.T.: Efficient piecewise-linear function approximation using the uniform metric. Discrete & Comput. Geom. 14(4), 445–462 (1995)
Gudmundsson, J., Narasimhan, G., Smid, M.H.M.: Distance-preserving approximations of polygonal paths. In: Pandya, P.K., Radhakrishnan, J. (eds.) FSTTCS 2003. LNCS, vol. 2914, pp. 217–228. Springer, Heidelberg (2003)
Guibas, L.J., Hershberger, J., Mitchell, J.S.B., Snoeyink, J.: Approximating polygons and subdivisions with minimum link paths. Int. J. Comput. Geometory Appl. 3(4), 383–415 (1993)
Imai, H., Iri, M.: An optimal algorithm for approximating a piecewise linear function. Info. Proc. Letters 9(3), 159–162 (1986)
Imai, H., Iri, M.: Polygonal approximations of a curve - formulatons and algorithms. In: Toussaint, G.T. (ed.) Comp. Morphology, pp. 71–86. North-Holland, Amsterdam (1988)
Katoh, N., Ohsaki, M., Xu, Y.: A uniform triangle mesh generation of curved surfaces. In: Akiyama, J., Kano, M., Tan, X. (eds.) JCDCG 2004. LNCS, vol. 3742. Springer, Heidelberg (2005)
Lee, D.T., Robert, I., Drysdale, L.: Generalization of voronoi diagrams in the plane. SIAM J. Comput. 10(1), 73–87 (1981)
Megiddo, N.: Applying parallel computation algorithms in the design of serial algorithms. J. ACM 30(4), 852–865 (1983)
Melkman, A., O’Rourke, J.: On polygonal chain approximation. In: Toussaint, G.T. (ed.) Comp. Morphology, pp. 87–95. North-Holland, Amsterdam (1988)
Tanigawa, S., Katoh, N.: Finding a triangular mesh with a constant number of different edge lengths. In: Proc. of the 17th Canad. Conf. on Comput. Geom. (2005), http://cccg.cs.uwindsor.ca/papers/41.pdf
Xu, Y.F., Dai, W., Katoh, N., Ohsaki, M.: Triangulating a convex polygon with small number of non-standard bars. In: Wang, L. (ed.) COCOON 2005. LNCS, vol. 3595, pp. 481–489. Springer, Heidelberg (2005)
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Tanigawa, Si., Katoh, N. (2006). Polygonal Curve Approximation Using Grid Points with Application to a Triangular Mesh Generation with Small Number of Different Edge Lengths. In: Cheng, SW., Poon, C.K. (eds) Algorithmic Aspects in Information and Management. AAIM 2006. Lecture Notes in Computer Science, vol 4041. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11775096_16
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DOI: https://doi.org/10.1007/11775096_16
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