Iterative Coherent Processor For Bandlimited Signal Extrapolation

Robert J. Marks II; David K. Smith

doi:10.1117/12.958837

22 August 1980 Iterative Coherent Processor For Bandlimited Signal Extrapolation

Robert J. Marks II, David K. Smith

Proceedings Volume 0231, 1980 Intl Optical Computing Conf I; (1980) https://doi.org/10.1117/12.958837
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

Given a truncated portion of a bandlimited image with known x and y bandwidths, the extrapolation problem is to determine the signal over all x and y. An iterative extrapolation algorithm, recently proposed by Gerchberg, requires only the repeated operations of Fourier transformation and truncation. This paper presents a coherent optical processor which implements Gerchberg's iterative extrapolation algorithm in two dimensions. Iteration is performed by simple passive feedback. Experimental results are presented to illustrate the effectiveness of the processor.

Citation Download Citation

Robert J. Marks II and David K. Smith "Iterative Coherent Processor For Bandlimited Signal Extrapolation", Proc. SPIE 0231, 1980 Intl Optical Computing Conf I, (22 August 1980); https://doi.org/10.1117/12.958837

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