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1. 中国科学院 长春光学精密机械与物理研究所,吉林 长春,中国,130033
2. 中国科学院大学, 北京 100049
3. 中国科学院 苏州生物医学工程技术研究所, 江苏 苏州 215163
[ "张晓梦(1988-)女,河北石家庄人,硕士研究生,研究方向为医学图像处理。E-mail:zxm1907@163.com" ]
[ "张涛(1964-),男,吉林长春人,研究员,博士生导师,主要从事航空侦察相机设备研制、机械光电成像系统研制、靶场光电测控设备研制。E-mail:zhangt@ciomp.ac.cn" ]
收稿日期:2013-08-02,
修回日期:2013-09-14,
网络出版日期:2013-10-08,
纸质出版日期:2014-04-25
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张晓梦, 张涛. 基于FPGA实现CT图像重建加速的设计[J]. 液晶与显示, 2014,29(3): 455-460
ZHANG Xiao-meng, ZHANG Tao. Design of CT image reconstruction acceleration based on FPGA[J]. , 2014,29(3): 455-460
张晓梦, 张涛. 基于FPGA实现CT图像重建加速的设计[J]. 液晶与显示, 2014,29(3): 455-460 DOI: 10.3788/YJYXS20142903.0455.
ZHANG Xiao-meng, ZHANG Tao. Design of CT image reconstruction acceleration based on FPGA[J]. , 2014,29(3): 455-460 DOI: 10.3788/YJYXS20142903.0455.
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。
To fulfill the real-time processing requirement of computerized tomography image reconstruction
a FPGA-based accelerated CT image reconstruction method was proposed. Firstly
filtering projection algorithm was broken down by parallelism.Then the FPGA-based processing structure was proposed by using the parallel pipeline technology
and the designs of the main units of the method were discussed
including the designs of the filter
back-projection
and accumulation.Lastly
the system which includes 12 parallel processing pipelines was implemented on FPGA. The simulation results showed that
compared with the CPU reconstruction
the FPGA-based reconstruction achieved that reconstruction absolute error is less than 0.4% and the speedup ratio is more than 100
its speedup effect is more obvious when it is applied to larger amount of reconstructed image.
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)
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