BPF-based reconstruction algorithm
for multiple rotation-translation scan mode |
| |
Authors: | Ming Chen Huitao Zhang Peng Zhang |
| |
Affiliation: | Computer Tomography Laboratory, Capital Normal University, Beijing 100037, China |
| |
Abstract: | In industrial CT, it is often required to inspect large objects using short line-detectors. To acquire the complete CT data for the scanning slice of large objects using short line-detectors, some multi-scan modes have been developed. But the existing methods reconstructing an image from the data scanned by multi-scan modes have to rebin the data into fan-beam or parallel-beam form via data interpolation. The data rebinning process not only increases great computational cost, but also degrades image resolution. In this paper, we propose a backprojection-filtration (BPF)-based reconstruction algorithm for rotation-translation (RT) multi-scan mode. An important feature of the proposed algorithm is that data rebinning process is not introduced. The simulation results have verified the validity of the proposed algorithm. |
| |
Keywords: | backprojection-filtration reconstruction algorithm multiple rotation-translation scan mode fan-beam |
|
| 点击此处可从《自然科学进展》浏览原始摘要信息 |
|
点击此处可从《自然科学进展》下载全文 |
|