Abstract
Spatial resolution improvement techniques for three dimensional industrial computed tomography (3D-ICT) have been researched in this paper. A cone-beam 3D-ICT scan mode was proposed to improve the spatial resolution by the quarter-detector offset. Its filter back-projection reconstruction algorithm based on the parallel beam rebin principle was deduced. Firstly this method acquires the two dimensional projection sequence by offsetting the detector center a quarter of the detector channel width with respect to the iso-center. Secondly it rebins these projects into parallel data. Finally it doubles the sampling frequency of parallel data with the symmetry between two projection view angles with an angle interval 180°. Computer simulation results prove the correction and the validity of this algorithm. Using this algorithm, the spatial resolution can be improved approximate 100% along the horizontal reconstruction direction.
| Original language | English |
|---|---|
| Pages (from-to) | 768-772 |
| Number of pages | 5 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 22 |
| Issue number | 5 |
| State | Published - May 2007 |
Keywords
- Aerospace propulsion system
- Computed tomography
- Cone-beam scan
- Filter back-projection reconstruction algorithm
- Spatial resolution
Fingerprint
Dive into the research topics of 'Scan mode and its reconstruction algorithm for improving spatial resolution of 3D-ICT'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver