HIGH-RESOLUTION HYBRID DIGITAL-OPTICAL PROCESSOR FOR TRANSAXIAL TOMOGRAPHY.

A. F. Gmitro, G. R. Gindi, J. E. Greivenkamp, H. H. Barrett, W. Swindell

Research output: Contribution to journalConference article

Abstract

A hybrid digital-optical processor for reconstructing a 2-dimensional scalar field from its 1-dimensional projections is presented. This processor represents a further development in a continuing effort to incorporate and utilize the power of optical data processing in x-ray computed tomography. The processor described operates on a data set recorded on x-ray film. The reconstruction of the field from its projection data is obtained via the filtered back-projection algorithm. Specifically, the time consuming operations of filtering and back-projection are done optically. Final addition and subtraction operations are done in digital hardware, with the final image residing in a digital memory. Sophisticated image enhancement operations are then possible with computer back-up. The interface between the optical and digital hardware is simple video.

Original languageEnglish (US)
Pages (from-to)250-225
Number of pages26
JournalProceedings of the Society of Photo-Optical Instrumentation Engineers
Volume231
StatePublished - Jan 1 2017
EventInt Opt Comput Conf - Washington, DC, USA
Duration: Apr 8 1980Apr 11 1980

ASJC Scopus subject areas

  • Engineering(all)

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