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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bertram, M. Rose, G. Schafer, D. Wiegert, J. Aach, T. |
| Copyright Year | 2004 |
| Description | Author affiliation: Philips Res. Laboratories, Aachen, Germany (Bertram, M.; Rose, G.; Schafer, D.; Wiegert, J.) |
| Abstract | To compensate for sparse angular sampling in cone-beam computed tomography causing characteristic streak artifacts, we propose to increase the number of projected views by means of nonlinear directional interpolation. For this purpose, a specific method for accurate interpolation of 3D sinogram data based on a structure tensor approach has been developed. Quantitative evaluation of the interpolation error shows that our method clearly outperforms conventional interpolation schemes. Using a set of simulated cone-beam CT projection data, it is demonstrated that inclusion of interpolated projections into the reconstruction process significantly reduces streak artifacts and noise while preserving spatial resolution to a high degree. |
| Starting Page | 928 |
| Ending Page | 931 |
| File Size | 573193 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780383885 |
| DOI | 10.1109/ISBI.2004.1398691 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-04-18 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Interpolation Tensile stress Computed tomography Image reconstruction Image quality Filters Optical imaging Symmetric matrices Laboratories Signal processing |
| Content Type | Text |
| Resource Type | Article |
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