基于图形处理器的近似等值面提取算法.pdfVIP

基于图形处理器的近似等值面提取算法.pdf

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33 20 2007 10 Vol.33 No.20 Computer Engineering October 2007 ·· 2007 A TP393 ( 200240) Ray-Isosurface intersection GPU iso-splatting GPU FPS FPS Isosurface Approximate Extraction Based on GPU GUO Yong, GU Li-xu (Department of Computer Science, School of Electronic Information and Electric Engineering, Shanghai Jiaotong University, Shanghai 200240) AbstractThis paper proposes a novel isosurface extraction approach. This method is based on the algorithm of ray-isosurface intersection, simulating the 3D scanner to compute the isosurface. The proposed method employs the high parallel computing ability of the modern GPU to complete the main process, and the final result is represented as a set of points based on the method of iso-splatting. This approach achieves a high quality image and a high FPS rate by controlling the quantity of points and avoiding the invisible portions. To validate the approach against the traditional one, several datasets are tested in the experiment, and significant improvements are revealed in both FPS and quality. Key wordsgraphics processing unit(GPU); isosurface extraction; frame per second (FPS) 2 2.1 (view dependent) 1 (view independent) 3 Ray-Isosurface intersection[1] V , V , V X , Y, Z x y z S ,S , S

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