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- Azizan Saaban, Abd. Rahni Mt. Piah, Ahmad Abdul Majid
- Computer Graphics, Imaging and Visualisation…
- 2007

The construction of a range restricted bivariate C<sup>2</sup> interpolant to scattered data is considered in which the interpolant is positive everywhere if the original data are positive. Sufficient conditions are derived on Bezier points in order to ensure that surfaces comprising quintic Bezier triangular patches are always positive and satisfy… (More)

- Azizan Saaban, Abd. Rahni Mt. Piah, Ahmad Abdul Majid
- International Conference on Computer Graphics…
- 2006

The construction of a bivariate C<sup>1</sup> interpolant to scattered data is considered in which the interpolant is positive everywhere if the original data are positive. This study is motivated by earlier work in which sufficient conditions are derived on Bezier points in order to ensure that surfaces comprising cubic Bezier triangular patches are always… (More)

- Abd Rahni, Mt Piah, Azizan Saaban, Ahmad Abd Majid
- 2006

The construction of a range restricted bivariate C ( or G ) interpolant to scattered data is considered in which the interpolant is positive everywhere if the original data are positive. This study is motivated by earlier work in which sufficient conditions are derived on Bézier points in order to ensure that surfaces comprising cubic Bézier triangular… (More)

- Azizan Saaban, Abd. Rahni Mt. Piah, Ahmad Abdul Majid, L. H. T. Chang
- International Conference on Computer Graphics…
- 2005

One of the main focus of scattered data interpolation is fitting a smooth surface to a set of non-uniformly distributed data points which extends to all positions in a prescribed domain. In this paper, given a set of scattered data V = {(x/sub i/, y/sub i/), i=1,...,n} /spl isin/ R/sup 2/ over a polygonal domain and a corresponding set of real numbers… (More)

- Azizan Saaban, Rahni Mt Piah, R. M. Piah
- 2009

This paper discusses the use of a C interpolant which is positive everywhere and the need to preserve positivity in the case of visualization of rainfall data distribution of Peninsular Malaysia. The results from our previous work, where sufficient conditions on Bézier points have been derived, will be used in order to ensure that surfaces comprising… (More)

- Samsul Ariffin, Abdul Karim, Azizan Saaban, Sundaram Muthuvalu, Bandar Seri Iskandar
- 2014

This paper studies the use of Bézier triangular patches for the construction of closed surfaces with triangular faces. The construction of Bézier triangular is defined on the faces of the solid under consideration. Bézier triangles with minimum degree of three or cubic have been utilized for the purposed of the surface modeling. The degree smoothness… (More)

Abstract : The construction of a range restricted bivariate G interpolant to scattered data is considered in which the interpolant is positive everywhere if the original data are positive. This study is motivated by earlier work in which sufficient conditions are derived on Bézier points in order to ensure that surfaces comprising quartic Bézier triangular… (More)

- Ali F. Jameel, Azizan Saaban, Hamzeh H. Zureigat
- Neural Computing and Applications
- 2017

In this paper, we discuss the numerical solution of second-order nonlinear two-point fuzzy boundary value problems (TPFBVP) by combining the finite difference method with Newton’s method. Numerical example using the well-known nonlinear TPFBVP is presented to show the capability of the new method in this regard and the results are satisfied the convex… (More)

- AZIZAN SAABAN
- 2011

We present the result and accuracy comparison of generalized positivitypreserving schemes for triangular Bézier patches of 1 C and 2 C scattered data interpolants that have been constructed. We compare three methods of 1 C schemes using cubic triangular Bézier patches and one 2 C scheme using quintic triangular Bézier patches. Our test case consists of four… (More)

- Samsul Ariffin Abdul Karim, Kong Voon Pang, Azizan Saaban
- J. Applied Mathematics
- 2015