Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Yunbeom Park"'
Publikováno v:
Journal of Korea Multimedia Society. 15:784-793
Defects of TFT-LCD is detected by thresholding the difference image between the input image and template one because LCD panel has its inherent patterns. However, the pitch corresponding to pattern period is gradually changed according to the distanc
Autor:
Namyong Lee, Yunbeom Park
Publikováno v:
Journal of Applied Mathematics and Computing. 18:159-169
An algorithmic approach to degree reduction of rational Bezier curves is presented. The algorithms are based on the degree reduction of polynomial Bezier curves. The method is introduced with the following steps: (a) convert the rational Bezier curve
Publikováno v:
Computer Aided Geometric Design. 21:181-191
In this paper we show that the best constrained degree reduction of a given Bezier curve f of degree from n to m with Cα-1-continuity at the boundary in L2-norm is equivalent to the best weighted Euclidean approximation of the vector of Bernstein-Be
Publikováno v:
Computer Aided Geometric Design. 19:709-718
We study the relationship of transformations between Legendre and Bernstein basis. Using the relationship, we present a simple and efficient method for optimal multiple degree reductions of Bezier curves with respect to the L2-norm.
Autor:
Byung-Gook Lee, Yunbeom Park
Publikováno v:
Korean Journal of Computational & Applied Mathematics. 9:151-165
An algorithmic approach to degree elevation of NURBS curves is presented. The new algorithms are based on the weighted blossoming process and its matrix representation. The elevation method is introduced that consists of the following steps: (a) deco
Autor:
Byung-Gook Lee, Yunbeom Park
Publikováno v:
Bulletin of the Australian Mathematical Society. 56:507-515
An algorithmic approach to degree reduction of Bézier curves is presented. The algorithm is based on the matrix representations of the degree elevation and degree reduction processes. The control points of the approximation are obtained by the gener
Autor:
Yunbeom Park, Byung-Gook Lee
Publikováno v:
Korean Journal of Computational & Applied Mathematics. 3:245-252
We described a relationship of theL2 norm of a Bezier curve andl2 norm of its control points. The use of Bezier curves finds much application in the general description of curves and surfaces and provided the mathematical basis for many computer grap
Autor:
U Jin Choi, Yunbeom Park
Publikováno v:
The Journal of the Australian Mathematical Society. Series B. Applied Mathematics. 36:399-413
The error analysis of an algorithm for generating an approximation of degree n − 1 to an nth degree Bézier curve is presented. The algorithm is based on observations of the geometric properties of Bézier curves which allow the development of deta
Autor:
Byung-Gook Lee, Yunbeom Park
Publikováno v:
Korean Journal of Computational & Applied Mathematics. 8
An algorithmic approach to degree reduction of B-spline curves is presented. The new algorithms are based on the blossoming process and its matrix representation. The degree reduction of B-spline curves are obtained by the generalized least square me