【作者】 梁亮； 张定华； 毛海鹏； 王凯； 吴清；

【Author】 LIANG Liang ZHANG Ding-hua MAO Hai-peng WANG Kai WU Qing (The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology,Ministry of Education,Northwestern Polytechnical University,Xi’an,710072)

【机构】 西北工业大学现代设计与集成制造技术教育部重点实验室；

【摘要】 图像重建时间过长一直是影响三维CT(Computed Tomography)实时成像的技术瓶颈。本文首先给出了FDK 算法的几何描述,并据此导出了利用投影纹理映射加速三维图像重建的原理,最后利用GPU(Graphics Process Unit)的可编程、高精度以及并行计算等特性实现了该方法。实验结果表明重建效率提升比较显著,与原始算法相比取得了8倍左右的时间加速比。更多还原

【Abstract】 Image reconstruction is a very time consuming process,which is the bottleneck of real-timeimaging of 3D CT.In this paper,we first gave the geometric description of the FDK method,theneduced the theory of 3D fast image reconstruction using projective texture mapping.At last we madefull use of the characters of GPU to implement our method.The result shows that the reconstructionspeed is promoted effectively,and we can get a reconstruction speedup of 8 times compared to theoriginal algorithm.更多还原