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31 October 1997 Examination of the optical transfer function from single-frame coherent speckle images
Barbara Tehan Landesman, David F. Olson
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Proceedings Volume 3170, Image Reconstruction and Restoration II; (1997) https://doi.org/10.1117/12.292827
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States
Abstract
In classical imaging, the optical transfer function (OTF) conveys information about how well the optical system transmits individual spatial frequencies of the object. This OTF is based on the point spread function of the system; that is, the ability of the optics to form a point image given either coherent or incoherent illumination. In contrast, nonconventional imaging systems consist of an innovative combination of optics and software to form a final image. Such a system does not easily lend itself to the concept of a point spread function although individual spatial frequencies will be affected differently by the system as a whole. This paper investigates a phase differencing technique for deriving OTF information from a single frame of a coherent speckle image. A multiframe transfer function is obtained by averaging the OTFs of several single frames.
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Barbara Tehan Landesman and David F. Olson "Examination of the optical transfer function from single-frame coherent speckle images", Proc. SPIE 3170, Image Reconstruction and Restoration II, (31 October 1997); https://doi.org/10.1117/12.292827
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KEYWORDS
Optical transfer functions
Speckle
Imaging systems
Point spread functions
Spatial frequencies
Optical imaging
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