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http://hdl.handle.net/2289/7593
Title: | Theoretical optimal modulation frequencies for scattering parameter estimation and ballistic photon filtering in diffusing media |
Authors: | Panigrahi, Swapnesh Fade, Julien Fade Ramachandran, Hema Alouini, Mehdi |
Issue Date: | Jul-2016 |
Publisher: | Optical Society of America |
Citation: | Optics Express, 2016, Vol.24, p16066-16083 |
Abstract: | The efficiency of using intensity modulated light for the estimation of scattering properties of a turbid medium and for ballistic photon discrimination is theoretically quantified in this article. Using the diffusion model for modulated photon transport and considering a noisy quadrature demodulation scheme, the minimum-variance bounds on estimation of parameters of interest are analytically derived and analyzed. The existence of a variance-minimizing optimal modulation frequency is shown and its evolution with the properties of the intervening medium is derived and studied. Furthermore, a metric is defined to quantify the efficiency of ballistic photon filtering which may be sought when imaging through turbid media. The analytical derivation of this metric shows that the minimum modulation frequency required to attain significant ballistic discrimination depends only on the reduced scattering coefficient of the medium in a linear fashion for a highly scattering medium. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/7593 |
ISSN: | 1094-4087 (online) |
Alternative Location: | https://doi.org/10.1364/OE.24.016066 |
Copyright: | 2016 Optical Society of America |
Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
File | Description | Size | Format | |
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2016_Optics Express_Vol.24_p16066.pdf Restricted Access | Open Access | 3.41 MB | Adobe PDF | View/Open Request a copy |
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