为满足CT图像重建系统的实时处理要求,提出了一种基于FPGA实现CT图像重建的加速方法.首先将滤波反投影算法进行并行性分解,然后采用并行流水线设计思想,给出了算法在FPGA上实现的总体结构,并且分别给出滤波、反投影、循环累加等主要功能单元的电路设计,最后在FPGA上实现了12条并行流水线重建系统.实验结果表明,与基于CPU的图像重建相比较,基于FPGA的重建系统重建出的图像绝对误差小于0.4％,加速比在100倍以上,且重建图像的规模越大,加速效果越明显.
参考文献
| [1] | 邓建青,刘晶红,刘铁军.基于DSP系统的查分辨率图像重建技术研究[J].液晶与显示,2012,27(1):114-120.Deng J Q,Liu J H,Liu T J.Super-resolution image reconstruction technology based on DSP system[J].Chinese Journal of Liquid Crystal andDisplay,2012,27(1):114-120.(in Chinese) |
| [2] | Yan G,Tian J,Zhu S P,et al.Fast cone-beam CT image reconstruction using GPU hardware[J].Journal of X-Ray Science and Technology,2008(16):225-234. |
| [3] | 邹永宁,谭辉,黄亮.CT图像重建加速的几种方法[J].计算机系统应用,2009(4):167-170.Zou Y N,Tan H,Huang L.Research progress on CT image reconstruction acceleration[J].Computer Systems & Applications,2009(4):167-170.(in Chinese) |
| [4] | 曾更生.医学图像重建[M].北京:高等教育出版社,2010:21-30.Zeng G S.Medical Image Reconstruction:A Conceptual Tutorial[M].Beijing:Higher Education Press,2010:21-30.(in Chinese) |
| [5] | Coric S,Lesser M,Miller E,et al.Parallel-beam backprojection:An FPGA implementation optimized for medical imaging[C]//Proc of the Tenth Int.Symposium on FPGA,2002(2):217-226. |
| [6] | Aggarwal P,Mehra R.High speed CT image reconstruction using FPGA[J].International Journal of Computer Applications,2011,22(4):7-10. |
| [7] | 邓靖飞,李建新,李磊,等.基于FPGA的CT重建加速技术综述[J].CT理论与研究,2010,19(2):25-33.Deng J F,Li J X,Li L,et al.Review of accelerated CT reconstruction based on FPGA[J].CT Theory and applications,2010,19(2):25-33.(in Chinese) |
| [8] | 熊文彬,蒋泉,曲建军,等.基于FPGA实现的视频显示系统[J].液晶与显示,2011,26(1):92-95.Xiong W B,Jiang Q,Qu J J,et al.Video display system based on FPGA[J].Chinese Journal of Liquid Crystal and display,2011,26(1):92-95.(in Chinese) |
| [9] | 曾政菻,刘学满.基于FPGA图形字符加速的液晶显示模块[J].液晶与显示,2012,27(3):352-358.Zeng Z L,Liu X M.LCD module based on FPGA accelerating graphics and characters processing[J].Chinese Journal of Liquid Crystal and display,2012,27(3):352-358.(in Chinese) |
| [10] | 孙红进.FPGA实现的视频图像缩放显示[J].液晶与显示,2010,25(1):130-133.Sun H J.FPGA realization of video image zooming display[J].Chinese Journal of Liquid Crystal and Display,2010,25(1):130-133.(in Chinese) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%