TY - JOUR T1 - Coalescence Cubic Spline Fractal Interpolation Surfaces. AU - ARYA KUMAR BEDABRATA CHAND JO - International Journal of Numerical Analysis Modeling Series B VL - 3 SP - 207 EP - 223 PY - 2012 DA - 2012/03 SN - 3 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnamb/279.html KW - Fractals KW - Iterated Function System KW - Fractal Interpolation Surface KW - Cardinal Cubic Spline KW - Hidden Variables KW - CHFIS KW - Non-self-affine and Surface Approximation AB - Fractal geometry provides a new insight to the approximation and modelling of scientific data.This paper presents the construction of coalescence cubic spline fractal interpolation surfaces over a rectangular grid D through the corresponding univariate basis of coalescence cubic fractal splines of Type-I or Type-II. Coalescence cubic spline fractal surfaces are self-affine or nonself- affine in nature depending on the iterated function systems parameters of these univariate fractal splines. Upper bounds of L_∞-norm of the errors between between a coalescence cubic spline fractal surface and an original function f ∈ C^4[D], and their derivatives are deduced. Finally, the effects of free variables, constrained free variables and hidden variables are discussed for coalescence cubic spline fractal interpolation surfaces through suitably chosen examples.