CT重建中投影矩阵模型研究综述

基金项目:

国家高技术研究发展计划“863计划”(2012AA011603)

国家自然科学基金(61372172)

详细信息

Reviews of the Model of Projection Matrix of CT Reconstruction Algorithm

Information Engineering University, the School of Information Systems Engineering, Zhengzhou 450002, China

摘要: CT重建算法中,投影矩阵反映探测器上的投影与重建物体的关系,其模型刻画对于重建速度和精度有着重要影响。本文介绍目前投影矩阵研究现状,着重分析投影矩阵系数的计算方法,以及快速计算正投影和反投影的方法,并总结了目前投影矩阵模型的性能和发展。
- CT重建 /
- 投影矩阵
Abstract: In the CT reconstruction algorithm, projection matrices reflect the relationship between the projections on detector and the reconstructed objects. The matrix model has a significant influence on the reconstruction speed and image quality. This paper has first reviewed the research status of the projection matrix, then analyzed the calculation method of projection matrix coefficients and the rapid calculation method of forward projection and backprojection, and at last summarized the performance and development of projection matrix.
- CT reconstruction /
- projection matrix