Results 21 to 30 of about 1,888,108 (299)

An Efficient and Portable LED Multispectral Imaging System and Its Application to Human Tongue Detection

open access: yesApplied Sciences, 2022
LED illumination-based multispectral imaging has a fast switching ability, high cost-effectiveness, and a simple structure. It has been used in some applications, especially color recognition.
Cui Ma, Ming Yu, Fokui Chen, Hui Lin
doaj   +1 more source

Multispectral Quantitative Phase Imaging Using a Diffractive Optical Network

open access: yesAdvanced Intelligent Systems, 2023
As a label‐free imaging technique, quantitative phase imaging (QPI) provides optical path length information of transparent specimens for various applications in biology, materials science, and engineering.
Che-Yung Shen   +3 more
doaj   +1 more source

Single Shot Multispectral Multidimensional Computational Imaging Using Quasi-Random Lenses [PDF]

open access: yes, 2022
Quasi-random lenses (QRLs) were fabricated using electron beam lithography and conventional lens grinding to map every object point to a unique random intensity distribution.
Navaneethakrishnan, Srinivasan   +7 more
core   +1 more source

Multispectral images of peach related to firmness and maturity at harvest [PDF]

open access: yes, 2009
wo multispectral maturity classifications for red soft-flesh peaches (‘Kingcrest’, ‘Rubyrich’ and ‘Richlady’ n = 260) are proposed and compared based on R (red) and R/IR (red divided by infrared) images obtained with a three CCD camera (800 nm, 675 nm ...
P. Barreiro   +7 more
core   +1 more source

Fourier multispectral imaging

open access: yesOptics Express, 2015
Current multispectral imaging systems use narrowband filters to capture the spectral content of a scene, which necessitates different filters to be designed for each application. In this paper, we demonstrate the concept of Fourier multispectral imaging which uses filters with sinusoidally varying transmittance.
Jie, Jia   +3 more
openaire   +2 more sources

Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
We present THEIA, a novel underwater 3D multispectral imaging system. THEIA integrates a 4MP multispectral field array camera and a high-resolution RGB stereo camera pair in a specially built underwater housing to simultaneously capture spectral and ...
S. Spanos   +6 more
doaj   +1 more source

In Vitro and In Vivo Multispectral Photoacoustic Imaging for the Evaluation of Chromophore Concentration

open access: yesSensors, 2021
Multispectral photoacoustic imaging is a powerful noninvasive medical imaging technique that provides access to functional information. In this study, a set of methods is proposed and validated, with experimental multispectral photoacoustic images used ...
Aneline Dolet   +6 more
doaj   +1 more source

Semantic segmentation of multispectral photoacoustic images using deep learning

open access: yesPhotoacoustics, 2022
Photoacoustic (PA) imaging has the potential to revolutionize functional medical imaging in healthcare due to the valuable information on tissue physiology contained in multispectral photoacoustic measurements.
Melanie Schellenberg   +9 more
doaj   +1 more source

Review on Multispectral Photoacoustic Imaging Using Stimulated Raman Scattering Light Sources

open access: yesSensors
Photoacoustic imaging is an advanced biomedical imaging technique that has been widely developed and applied in diverse biomedical studies. By generating optical-absorption-based signals with ultrasound resolution, it enables in vivo visualization of ...
Yuon Song   +4 more
doaj   +1 more source

Detection of Melanoma Metastases in Resected Human Lymph Nodes by Noninvasive Multispectral Photoacoustic Imaging

open access: yesInternational Journal of Biomedical Imaging, 2014
Objective. Sentinel node biopsy in patients with cutaneous melanoma improves staging, provides prognostic information, and leads to an increased survival in node-positive patients. However, frozen section analysis of the sentinel node is not reliable and
Gerrit Cornelis Langhout   +9 more
doaj   +1 more source

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