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Proceedings Paper

A compressive sensing based transmissive single-pixel camera
Author(s): Filipe Magalhães; Mehrdad Abolbashari; Faramarz Farahi; Francisco M. Araújo; Miguel V. Correia
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Paper Abstract

Compressive sensing (CS) has recently emerged and is now a subject of increasing research and discussion, undergoing significant advances at an incredible pace. The novel theory of CS provides a fundamentally new approach to data acquisition which overcomes the common wisdom of information theory, specifically that provided by the Shannon-Nyquist sampling theorem. Perhaps surprisingly, it predicts that certain signals or images can be accurately, and sometimes even exactly, recovered from what was previously believed to be highly incomplete measurements (information). As the requirements of many applications nowadays often exceed the capabilities of traditional imaging architectures, there has been an increasing deal of interest in so-called computational imaging (CI). CI systems are hybrid imagers in which computation assumes a central role in the image formation process. Therefore, in the light of CS theory, we present a transmissive single-pixel camera that integrates a liquid crystal display (LCD) as an incoherent random coding device, yielding CS-typical compressed observations, since the beginning of the image acquisition process. This camera has been incorporated into an optical microscope and the obtained results can be exploited towards the development of compressive-sensing-based cameras for pixel-level adaptive gain imaging or fluorescence microscopy.

Paper Details

Date Published: 26 July 2011
PDF: 8 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80010B (26 July 2011); doi: 10.1117/12.891940
Show Author Affiliations
Filipe Magalhães, INESC Porto (Portugal)
Univ. do Porto (Portugal)
Mehrdad Abolbashari, The Univ. of North Carolina at Charlotte (United States)
Faramarz Farahi, The Univ. of North Carolina at Charlotte (United States)
Francisco M. Araújo, INESC Porto (Portugal)
Miguel V. Correia, INESC Porto (Portugal)
Univ. do Porto (Portugal)

Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics
Manuel Filipe Costa, Editor(s)

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