in this paper, the author attempts to discuss two main problems of convolution back projection algorithm basing on fan-beam scanning 本文主要探讨了卷积反投影算法的两个核心问题:卷积窗函数与内插函数。
convolution back projection algorithm has parallelism and the image reconstruction with such an algorithm has fine quality and high speed 本文在比较了各种算法后,采用卷积反投影算法作为并行图像重建的算法。
the convolution back projection ( cbp ) technique and the algebraic reconstruction technique ( art ) are two of the major image reconstruction methods in ct 现在主要有两大类重建图像的方法:变换方法和迭代方法.变换法以卷积反投影算法最为常用,医学ct普遍采用变换法成像技术
its image reconstruction belongs to the image reconstruction under narrow fan-beam scan mode . after comparing different algorithms, this paper introduces convolution back projection algorithm for the parallel image reconstruction 采用高能直线加速器作为射线源的高能x射线工业ct机多采用窄角扇束扫描方式,其图像重建属窄角扇束扫描方式下的图像重建。
the parallelization of image reconstruction by convolution back projection with narrow fan-beam based on workstations cluster can solve fast image reconstruction of high power x-ict, and the speed of parallel image reconstruction relates to the numbers of workstations involved 本论文采用窄角扇束卷积反投影图像重建在工作站机群上的并行实现能解决高能x射线工业ct机的快速图像重建问题,并行图像重建的速度与参与并行实现的工作站数有关。