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Proceedings Paper

Superresolving optical system using time multiplexing computer decoding and image processing
Author(s): Amir Shemer; David Mendlovic; Zeev Zalevsky; Emanuel Marom
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Paper Abstract

Objects that temporally vary slowly, may be super resolved using two moving masks such as pinhole or grating. The setup requires two physical gratings that should move in a synchronized manner. This approach is efficient for exceeding the resolving capability of Abbe's limit. Moreover, it was based on coherent illumination and required a certain approximation. In this work the second grating, which is responsible for the information decoding, is replaced by a detector array and post-processing procedures. This way, the synchronization problem existing when two gratings are used is simplified. Furthermore, two novel approaches for getting accurate coherent super-resolution and overcoming the distortions exhibited by Ronchi gratings and manufacturing imperfections are also presented. In the first approach the grating in the image plane is moved with a velocity which is half the required velocity. In the second approach, different parts of the spectrum are transmitted through the system's aperture that allows a post processing ability. Experimental results are provided for demonstrating the ability of the new approach.

Paper Details

Date Published: 24 May 2000
PDF: 8 pages
Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000); doi: 10.1117/12.386782
Show Author Affiliations
Amir Shemer, Tel Aviv Univ. (Israel)
David Mendlovic, Tel Aviv Univ. (Israel)
Zeev Zalevsky, Tel Aviv Univ. (Israel)
Emanuel Marom, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 4089:
Optics in Computing 2000
Roger A. Lessard; Tigran V. Galstian, Editor(s)

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