基于三维图像重建的一种窄角锥束CT扫描方式  

作　　者：康晓月[1] 王明泉[1] 

机构地区：[1]中北大学,030051

出　　处：《中国科技信息》2009年第24期23-24,30,共3页China Science and Technology Information

基　　金：山西省青年科技研究基金(编号:2009021019-2)--基于工业CT的三维数据场可视化重点实验室

摘　　要：近年来,CT图像直接三维重建成为CT技术研究的尖端技术,由于FDK近似重建算法重建精度不高,在不提高现有系统复杂程度的前提下,本文提出了窄角锥束在工业CT中的应用方法,并且提出了对FDK相应的改进算法,从而提高重建的精度。改进后的锥束CT扫描的采样次数比传统锥束CT扫描的采样次数减少,扫描速度加快,并能够解决锥束CT扫描所不能解决的对大尺寸工件扫描的问题,如:对汽车业等大型机械产品的快速检测。In recent years. CT imaging has become a direct three dimensional reconstruction of CT technology research cutting-edge technology, as the FDK reconstruction algorithm similar to the reconstruction accuracy is not high, does not increase the complexity of the existing system.Under the premise of this paper, Narrow-angle cone-beam of the track in the industrial application of the method, and made a corresponding Improvement of the FDK algorithm, thereby improving the accuracy of the reconstruction, the sampling frequency of this cone-beam CT scans is less than the traditional cone-beam CT scans of the sampling frequency. Scanning speed can soive the problem of large-size workDiece scan .which the traditional cone-beam CT scan can not solve.Example：The rapid detection of automotive industry and large-scale mechanical products so on.

关 键 词：工业CT 三维重建 锥束重建 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP334.22[自动化与计算机技术—计算机科学与技术]