基于微扫描的X射线实时成像方法  

Optical Micro-Scanning X-Ray Real-Time Imaging Method

作　　者：高美静[1] 许伟[1] 吴伟龙[1] 王静媛[1] 

机构地区：[1]燕山大学信息科学与工程学院河北省特种光纤与光纤传感重点实验室,河北秦皇岛066004

出　　处：《激光与光电子学进展》2016年第5期163-170,共8页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61501396);河北省自然科学基金(F2014203220;F201403245);河北省高等学校科学技术研究项目(QN2015021;Q2012129;QN2014034)

摘　　要：为提高X射线实时成像系统的空间分辨力,提出了将光学微扫描技术引入原有成像系统,搭建了带有微扫描的X射线实时成像系统,介绍了光学微扫描X射线成像系统的工作原理。该光学微扫描系统得以成功应用的关键技术之一是亚像素级精度的图像配准技术。给出了频域加窗图像配准方法的原理、流程及具体步骤。利用不同配准算法对X射线图像进行了仿真研究,仿真结果表明该图像配准算法对于X射线图像的有效性,该方法将实际X射线图像配准的精度提高到亚像素级,具有较强的实用价值。To improve the spatial resolution of X-ray real-time imaging systems, the optical micro-scanning technology is introduced into the existing imaging system and the optical micro-scanning X-ray real-time imaging system is built. The working principle of optical micro-scanning X-ray real-time imaging systems is introduced. The sub-pixel precision image registration technique is one of the key technology of successful application of the optical micro-scanning system. The principles, processes and concrete steps of frequency-domain windowing image registration method are introduced. Simulations with different registration algorithms for X-ray image are studied. Simulation results indicate indicate that the effectiveness of the image registration algorithm for X-ray image. The technique improves the accuracy of the actual X-ray image registration to a sub-pixel level and has a strong practical value.

关 键 词：成像系统 X射线成像 微扫描 高分辨力 亚像素级图像配准 

分 类 号：P234.3[天文地球—摄影测量与遥感]