GPU isosurface raycasting of FCC datasets

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• 作者：Minho Kim ; ^{minhokim@uos.ac.kr}
• 关键词：Volume rendering ; Raycasting ; FCC lattice ; GPU ; Box-spline
• 刊名：Graphical Models
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：75
• 期：2
• 页码：90-101
• 全文大小：1929 K

文摘

This paper presents an efficient and accurate isosurface rendering algorithm for the natural C¹ splines on the face-centered cubic (FCC) lattice. Leveraging fast and accurate evaluation of a spline field and its gradient, accompanied by efficient empty-space skipping, the approach generates high-quality isosurfaces of FCC datasets at interactive speed (20-70 fps). The pre-processing computation (quasi-interpolation and min/max cell construction) is improved 20-30-fold by OpenCL kernels. In addition, a novel indexing scheme is proposed that allows an FCC dataset to be stored as a four-channel 3D texture. When compared with other reconstruction schemes on the Cartesian and BCC (body-centered cubic) lattices, this method can be considered a practical reconstruction scheme that offers both quality and performance. The OpenCL and GLSL (OpenGL Shading Language) source codes are provided as a reference.