Results 21 to 30 of about 1,045,365 (269)

Imaging in Systems Biology [PDF]

open access: yesCell, 2007
Most systems biology approaches involve determining the structure of biological circuits using genomewide "-omic" analyses. Yet imaging offers the unique advantage of watching biological circuits function over time at single-cell resolution in the intact animal.
Megason, Sean G., Fraser, Scott E.
openaire   +3 more sources

Advanced Imaging Methods Using Coded Aperture Digital Holography

open access: yesEngineering Proceedings, 2023
Optical imaging has been utilized in nature and technology for decades. Recently, new methods of optical imaging assisted by computational imaging techniques have been proposed and demonstrated.
Joseph Rosen
doaj   +1 more source

A Review of Ghost Imaging via Sparsity Constraints

open access: yesApplied Sciences, 2018
Different from conventional imaging methods, which are based on the first-order field correlation, ghost imaging (GI) obtains the image information through high-order mutual-correlation of light fields from two paths with an object appearing in only one ...
Shensheng Han   +5 more
doaj   +1 more source

Programmable Zoom Lens System with Two Spatial Light Modulators: Limits Imposed by the Spatial Resolution

open access: yesApplied Sciences, 2018
In this work we present an experimental proof of concept of a programmable optical zoom lens system with no moving parts that can form images with both positive and negative magnifications.
Jeffrey A. Davis   +4 more
doaj   +1 more source

Design and Fabrication of Microscale, Thin-Film Silicon Solid Immersion Lenses for Mid-Infrared Application

open access: yesMicromachines, 2020
Lens-based optical microscopes cannot resolve the sub-wavelength objects overpass diffraction limit. Recently, research on super-resolution imaging has been conducted to overcome this limitation in visible wavelength using solid immersion lenses. However,
Gil Ju Lee   +2 more
doaj   +1 more source

Algorithm for the Evaluation of Imperfections in Auto Bodywork Using Profiles from a Retroreflective Image

open access: yesSensors, 2014
Nowadays the automobile industry is becoming more and more demanding as far as quality is concerned. Within the wide variety of processes in which this quality must be ensured, those regarding the squeezing of the auto bodywork are especially important ...
Ramon Barber   +2 more
doaj   +1 more source

Biomedical applications of Jones-matrix tomography to polycrystalline films of biological fluids [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2019
Algorithms for reconstruction of linear and circular birefringence-dichroism of optically thin anisotropic biological layers are presented. The technique of Jones-matrix tomography of polycrystalline films of biological fluids of various human organs has
V. A. Ushenko   +9 more
doaj   +1 more source

Automated Optical Flow Based Registration for Adaptive Optics Scanning Laser Ophthalmoscope

open access: yesIEEE Photonics Journal, 2020
This study presents an automated registration method based on optical flow for an adaptive optics scanning laser ophthalmoscope. The method was designed to align and average images to obtain a higher signal-to-noise ratio image.
Yiwei Chen   +6 more
doaj   +1 more source

Smartphone microendoscopy for high resolution fluorescence imaging [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2016
High resolution optical endoscopes are increasingly used in diagnosis of various medical conditions of internal organs, such as the cervix and gastrointestinal (GI) tracts, but they are too expensive for use in resource-poor settings.
Xiangqian Hong   +3 more
doaj   +1 more source

Fourier Ptychography Reconstruction Based on Reweighted Amplitude Flow With Regularization by Denoising and Deep Decoder

open access: yesIEEE Photonics Journal, 2023
Fourier ptychography (FP) is a computational imaging technique with the advantage that it can obtain large field-of-view (FOV) and high-resolution (HR) imaging.
Baopeng Li   +6 more
doaj   +1 more source

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