Journal ArticleDOI
Optical imaging of hidden objects behind clothing
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TLDR
Results are presented of an experimental technique that was developed for acquiring the impulse response, based upon the Kramers-Kronig algorithm, and have been applied for optical imaging of objects hidden behind clothing.Citations
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Combined analysis of static and dynamic extinction characteristics of microbial spores and mycelia as a mid-infrared extinction material
TL;DR: In this article, a method via combined static and dynamic analysis extinction performance is presented, combining with the reflection spectra measured by a Nicolet FT-IR spectrometer, and transmittance determined by smoke box test of microbial materials in 3 ∼ 5 μ m.
Journal ArticleDOI
Determination of the complex refractive index segments of turbid sample with multispectral spatially modulated structured light and models approximation.
TL;DR: This is the first report of the estimation of the spectral CRI of a mouse head following injury obtained in the spatial frequency domain and indicates variations in the CRI among brain tissue suffering from injury.
Journal ArticleDOI
Three-dimensional imaging based on electronically adaptive liquid crystal lens
TL;DR: This is the first report, to the best of the knowledge, on using an LC lens to reconstruct 3D images and this proposed method does not need any mechanical movements to acquire a 3D image.
Journal ArticleDOI
Identification of Plastic Type and Surface Roughness of Film-Type Plastics in Water Using Kramers–Kronig Analysis
Boniphace Kanyathare,Benjamin O. Asamoah,Muhammad Umair Ishaq,James Amoani,Jukka Räty,Kai-Erik Peiponen +5 more
TL;DR: In this article, a novel application of Kramers-Kronig analysis was exploited to identify both smooth and rough film-type macroplastics with unknown thickness, which can be particularly useful in the in-situ identification of unknown film-like microplastics; although the sample is large, the ratio function is detected from an area that corresponds to the size of a MP.
Proceedings ArticleDOI
Assessing mouse brain tissue refractive index in the NIR spectral range utilizing spatial frequency domain imaging technique combined with processing algorithms
David Abookasis,Omri Meitav +1 more
TL;DR: In this article, a method based on spatial frequency domain imaging platform and different back-processing algorithms are used together to present the refractive index (RI) of mouse brain tissue in the NIR spectral range.
References
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Journal ArticleDOI
Ultrafast time-gated imaging in thick tissues: a step toward optical mammography.
TL;DR: With an ultrafast time-gated optical detection method, a thin translucent strip of fat hidden inside a 4-cm-thick tissue is located with millimeter spatial resolution with high precision.
Journal ArticleDOI
Evaluating the spatial resolution performance of a time-resolved optical imaging system.
TL;DR: Experiments have been performed to evaluate the likely spatial resolution performance of a possible screening for breast cancer using harmless doses of visible or near-infrared radiation, and suggest that a resolution of a few millimeters is achievable with a system with a temporal resolution of about 10 ps.
Journal ArticleDOI
Imaging of a translucent object hidden in a highly scattering medium from the early portion of the diffuse component of a transmitted ultrafast laser pulse
TL;DR: A translucent object hidden in a highly scattering medium is shown to be visible when the early portion of the transmitted diffuse pulse (snake photons) is detected.
Journal ArticleDOI
Realization of time gating by use of spatial filtering
TL;DR: A method for simulating conventional time gating in low-coherence optical imaging processes in highly scattering media is given, which enables the study of imaging techniques in scattering media to be carried out in an easy and highly controllable way.