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Interpolation Algorithms in Wavefront Construction

Fuxing Han, Jianguo Sun, Hao Yang

Abstract

For interpolation of velocity and velocity derivative of non-grids in wavefront construction,interpolation algorithms,such as the nearest,bilinear and linear bicubic interpolation algorithms,are compared and analyzed.With characteristics of wavefront construction,path of rays and computational efficiency of the algorithms are compared.It indicates that the bicubic interpolation algorithm is more accurate and faster.

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Key concepts: Bilinear interpolation, Bicubic interpolation, Stairstep interpolation, Interpolation (computer graphics), Nearest-neighbor interpolation, Algorithm, Multivariate interpolation, Trilinear interpolation