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New method of partial derivatives estimation based on convex combination

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3 Author(s)
Yu Qian ; Coll. of Inf. Technol., Shandong Women''s Univ., Jinan, China ; Li Xinhua ; Guo Xianhui

Triangular patches interpolation has a number of applications in science and industry, and first-order partial derivatives play an important role in this surface interpolation technology. In this paper a new method for estimating partial derivatives is proposed. The given points are separated into interior points and boundary points, area and shape of base triangles are taken into account for the interior case, and an objective function is structured and minimized for the boundary case. New method is easy to be computed and gets a more accurate result compared with the existing method. Comparison examples are included.

Published in:

Industrial and Information Systems (IIS), 2010 2nd International Conference on  (Volume:1 )

Date of Conference:

10-11 July 2010