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Passive time-multiplexing super-resolved technique for axially moving targets

: Zalevsky, Z.; Gaffling, S.; Hutter, J.; Chen, L.; Iff, W.; Tobisch, A.; Garcia, J.; Mico, V.

Postprint urn:nbn:de:0011-n-2281012 (469 KByte PDF)
MD5 Fingerprint: 1ad89d0fbd82778c3c4b0fa65e580f23
This paper was published by OSA and is made available as an electronic reprint with the permission of OSA. The paper can be found on the OSA website. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Erstellt am: 23.2.2013

Applied optics 52 (2013), Nr.7, S.C11-C15
ISSN: 0003-6935
ISSN: 1539-4522
ISSN: 1559-128X
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IISB ()
super-resolution; super-resolved; diffraction limit; time-multiplexing

In this paper we present a super-resolving approach for detecting an axially moving target that is based upon a time-multiplexing concept and that overcomes the diffraction limit set by the optics of an imaging camera by a priori knowledge of the high-resolution background in front of which the target is moving. As the movement trajectory is axial, the approach can be applied to targets that are approaching or moving away from the camera. By recording a set of low-resolution images at different target axial positions, the super-resolving algorithm weights each image by demultiplexing them using the high-resolution background image and provides a super-resolved image of the target. Theoretical analyses as well as simulations and preliminary experimental validation are presented to validate the proposed approach.