CT图像重建预处理滤波器设计

基金项目:

陕西省科技攻关资助项目(2005K04-G1)

西安交通大学科学研究基金

详细信息

Design of Preprocessing Filters for CT Reconstruction

Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China

摘要: 本文分析并设计了用于CT图像重建的几种预处理滤波器。通过分析不同滤波函数对断层图像重建质量的影响,从几种经典的滤波函数出发,进行改进并与窗函数结合得到了可用于CT图像重建的几种滤波器。有关投影数据的图像重建结果表明,所设计的几种滤波器较好地满足了实际图像重建的要求。
- 图像重建 /
- 预处理滤波器 /
- 窗函数
Abstract: Several preprocessing filters for CT reconstruction were analyzed and designed. By comparing and analyzing the quality of images reconstructed with different classical filters, several preprocessing filters are designed through improving filter function and combining with window function. The reconstruction experiments based on actual projection data indicate that these filters are effective in improving image qualities and can be used in actual CT reconstruction.
- image reconstruction /
- pre-processing filter /
- window function