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 language||English (US)|
|Number of pages||26|
|Journal||Proceedings of the Society of Photo-Optical Instrumentation Engineers|
|State||Published - Jan 1 2017|
|Event||Int Opt Comput Conf - Washington, DC, USA|
Duration: Apr 8 1980 → Apr 11 1980
ASJC Scopus subject areas