Results 31 to 40 of about 68,497 (293)

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

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

Multispectral principal component imaging

open access: yesOptics Express, 2003
We analyze a novel multispectral imager that directly measures the principal component features of an object. Optical feature extraction is studied for color face images, multi-spectral LANDSAT-7 images, and their grayscale equivalents. Blockwise feature extraction is performed that exploits both spatial and spectral correlation, with the goal of ...
Himadri, Pal, Mark, Neifeld
openaire   +2 more sources

Snapshot Multispectral Imaging [PDF]

open access: yesPhotonicsViews, 2019
AbstractA multispectral imaging concept based on a multi‐aperture system approach using a customized microlens array combined with a slanted continuously variable bandpass filter and a silicon‐based image sensor helps to overcome the restrictions of scanning techniques or wafer‐level coated detectors.
Oliver Pust, Martin Hubold
openaire   +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

Single Sensor Multi-Spectral Imaging

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2020
This dissertation presents the benefits of using a multispectral Single Sensor Camera (SSC) that, simultaneously acquire images in the visible and near-infrared (NIR) bands.
Xavier Soria Poma
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

Three-dimensional block matching using orthonormal tree-structured haar transform for multichannel images [PDF]

open access: yes, 2020
Multichannel images, i.e., images of the same object or scene taken in different spectral bands or with different imaging modalities/settings, are common in many applications.
Ito, Izumi, Pizurica, Aleksandra
core   +1 more source

SUPER-RESOLUTION OF MULTISPECTRAL IMAGES [PDF]

open access: yesModelling and Simulation in Science, 2007
In this paper we propose and analyze a globally and locally adaptive super-resolution Bayesian methodology for pansharpening of multispectral images. The methodology incorporates prior knowledge on the expected characteristics of the multispectral images uses the sensor characteristics to model the observation process of both panchromatic and ...
M. Vega   +3 more
openaire   +1 more source

Evaluating online filtering algorithms to enhance dynamic multispectral optoacoustic tomography

open access: yesPhotoacoustics, 2020
Multispectral optoacoustic tomography (MSOT) is an emerging imaging modality, which is able to capture data at high spatiotemporal resolution using rapid tuning of the excitation laser wavelength. However, owing to the necessity of imaging one wavelength
Devin O’Kelly   +2 more
doaj   +1 more source

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