Image Reconstruction Techniques For Computed Tomography From Sparse Data: X-Ray Imaging On The Varennes Tokamak And Other Applications.

R. Decoste; P. Noel

doi:10.1117/12.938591

25 November 1986 Image Reconstruction Techniques For Computed Tomography From Sparse Data: X-Ray Imaging On The Varennes Tokamak And Other Applications.

R. Decoste, P. Noel

Author Affiliations +

Proceedings Volume 0661, Optical Testing and Metrology; (1986) https://doi.org/10.1117/12.938591
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

Computer assisted tomography will be used on the Varennes tokamak, a medium size thermonuclear fusion research device, to reconstruct 2-D images of the X-ray emission from the plasma. Five full views or projections of the plasma with 16 detectors each will be available with a temporal resolution of a few microseconds. The X-ray imaging system and the reconstruction technique must take advantage of any prior knowledge of the object or plasma since the viewing access is quite limited and the data available is sparse. Comparative simulated examples demonstrate the advantages of Fourier harmonic expansion reconstructions over two other popular techniques. An example of possible industrial applications involving gross detection of material defects and local density variations is also discussed.

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R. Decoste and P. Noel "Image Reconstruction Techniques For Computed Tomography From Sparse Data: X-Ray Imaging On The Varennes Tokamak And Other Applications.", Proc. SPIE 0661, Optical Testing and Metrology, (25 November 1986); https://doi.org/10.1117/12.938591

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