Faculty Candidate Seminar
Fast Back-Projection Algorithms for Image Formation in Computer Tomography and Synthetic Aperture Ra
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Professor Munson is being considered for the Chair’s position in the
Electrical Engineering and Computer Science Department. Everyone is welcome to attend.
After a brief review of computer tomography (CT) and synthetic aperture radar (SAR), we describe a new back-projection approach to image formation in these systems. Unlike standard back-projection, the new scheme uses hierarchical decomposition, somewhat like the FFT. We specifically consider fast algorithms for fan-beam CT (fan-beam is the standard geometry for clinical scanners) and demonstrate 50-fold computational savings for images of realistic size. For SAR, we consider bistatic imaging (separate transmitter and receiver) for the near-field case where wavefront curvature must be handled. Once again, enormous computational savings are possible for images of typical size.