[1] Jena A, Gupta K. Liquid extrusion techniques for pore structure evaluation of nonwovens[J]. International Nonwovens Journal, 2003, 12(3):45-53.
[2] Olurin O B, Arnold M, Korner C, et al. The investigation of morphometric parameters of aluminium foams using micro-computed tomography[J]. Materials Science and Engineering A, 2002, 328(1/2): 334-343.
[3] Lorensen W E, Cline H E. Marching cubes: a high resolution 3D surface construction algorithm[J]. Computer Graphics, 1987, 21(4):163-169.
[4] Müller R, Rüegsegger P. Three-dimensional finite element modelling of non-invasively assessed trabecular bone structures[J]. Med Eng Phys, 1995, 17(2):126-133.
[5] Gonzalez R C, Woods R E. Digital image processing[M]. Translated by Ruan Qiuqi. Beijing: Publishing House of Electronics Industry, 2006: 496-500.(in Chinese)
[6] Levoy M. Efficient ray tracing of volume data[J]. ACM Transactions on Graphics, 1990, 9(3):245-261.
[7] Song Tao, Ou Zongyin. Fast volume rendering algorithm of octree encoded volume[J]. Journal of Computer-Aided Design and Computer Graphics, 2005, 17(9):1990-1996.(in Chinese)
[8] Rogers D F. Procedural elements for computer graphics[M]. Beijing: China Machine Press, 2002:323-328.(in Chinese)