A numerical investigation of Tomographic filters

Conference · Fri Jan 01 04:00:00 EST 1993 · Transactions of the American Nuclear Society; (United States)

OSTI ID:5861982

Munshi, P ^[1]; Rathore, R K.S.; Sri Ram, K; Kalra, M S ^[2]

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1. Fraunhofer Institute for Nondestructive Testing, Saarbrucken (Germany)
2. Indian Institute of Technology, Kanpur (India)

The computerized tomography (CT) technique has been well established in various engineering areas for essentially measuring cross-sectional distributions of certain physical parameters. Some specific applications for measuring void fraction profiles for two-phase flows have been attempted. The convolution backprojection (CBP) algorithm has been investigated for some new filter functions and some error estimates for CBP have recently been reported .6 An analysis incorporated in earlier work indicates that for certain ideal cases (i.e., perfect data), the performance of the popular tomographic filters for CBP can be predicted by the second derivative (Fourier space) of the filter function. Reconstructions were performed with data for a couple of simulated images representing a human brain and a damaged nuclear fuel bundle. The results indicate that the error in reconstruction does follow the trends predicted by the theorem reported earlier. The results for a certain experimental data set also confirm the trends obtained for the simulated data set.

• OSTI ID: 5861982
• Report Number(s): CONF-930601--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 68
• Country of Publication: United States
• Language: English

Related Subjects

440100* -- Radiation Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
CALCULATION METHODS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
DIGITAL FILTERS
FOURIER TRANSFORMATION
INTEGRAL TRANSFORMATIONS
ITERATIVE METHODS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MATHEMATICS
SIGNAL-TO-NOISE RATIO
TOMOGRAPHY
TRANSFORMATIONS