Modern GPU-based Forward-Projection Algorithm with a New Sampling Method
Forward-projection is an important process of computed tomography reconstruction. An accurate forwardprojection has a significant impact on increasing the reconstructed quality of iterative algorithms. However its computations are very cosily. In order to improve performance of forward-projection, we proposed a GPU accelerated scheme for it with a new sampling method. There are two novel techniques in our accelerating scheme. One is parallel strategy based on view angles to project volume at different view angles simultaneously, the other is distance based sampling manner in volume to make full use of texture cache. A number of experiments were performed to verify the proposed algorithm and the results show that this method is accurate and efficient.
forward-projection distance-based sampling GPU
Sun yigang Sun xiuyu Zhang hongying
College of Aeronautical Automation, Civil Aviation University of China, Tian Jin, 300300,China
国际会议
长沙
英文
1816-1819
2010-03-13（万方平台首次上网日期，不代表论文的发表时间）