Blar i Fakultet for informasjonsteknologi og elektroteknikk (IE) på tidsskrift "Proceedings of SPIE, the International Society for Optical Engineering"
Viser treff 21-36 av 36
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Mid-infrared spectroscopy with a fiber-coupled tuneable quantum cascade laser for glucose sensing
(Peer reviewed; Journal article, 2020)A fiber-coupled transmission spectroscopy setup using a pulsed external-cavity quantum cascade laser (EC-QCL, 1200-900 cm−1 ) has been developed and demonstrated for measurements of aqueous solutions. The system has been ... -
MOG: a background extraction approach for data augmentation of time-series images in deep learning segmentation
(Journal article; Peer reviewed, 2021)Image segmentation is one of the key components in systems performing computer vision recognition tasks. Various algorithms for image segmentation have been developed in the literature. Among them, more recently, deep ... -
MRTD: Man versus machine
(Journal article; Peer reviewed, 2018)We present Minimum-Resolvable Temperature Difference (MRTD) curves obtained by letting an ensemble of observers judge how many of the six four-bar patterns they can “see” in a set of images taken with different bar-to-background ... -
Novel localized surface plasmon resonance based optical fiber sensor
(Journal article; Peer reviewed, 2016)Over the last decade various optical fiber sensing schemes have been proposed based on local surface plasmon resonance (LSPR). LSPR are interacting with the evanescent field from light propagating in the fiber core or by ... -
Optical skin assessment based on spectral reflectance estimation and Monte Carlo simulation
(Journal article; Peer reviewed, 2017)Optical non-contact measurements in general, and chromophore concentration estimation in particular, have been identified to be useful tools for skin assessment. Spectral estimation using a low cost hand held device has ... -
Progressive integration of visibility constraints for implicit functions
(Peer reviewed; Journal article, 2022)Procedurally-defined implicit functions, such as CSG trees and recent neural shape representations, offer compelling benefits for modeling scenes and objects, including infinite resolution, differentiability and trivial ... -
Pushing the limits of beam-steering lens arrays
(Journal article; Peer reviewed, 2019)An essential part of a concentrated solar power system is the solar tracker. Tracking is usually implemented by rotating the entire optical system to follow the sun, adding to the bulk and complexity of the system. ... -
Robust Deep Unsupervised Learning Framework to Discover Unseen Plankton Species
(Journal article; Peer reviewed, 2021)Deep convolutional neural networks have proven effective in computer vision, especially in the task of image classification. Nevertheless, the success is limited to supervised learning approaches, requiring extensive amounts ... -
Robust pipeline localization for an autonomous underwater vehicle using stereo vision and echo sounder data
(Journal article; Peer reviewed, 2010)Submarine oil and gas pipeline inspection is a highly time and cost consuming task. Using an autonomous underwater vehicle (AUV) for such applications represents a great saving potential. However, the AUV navigation system ... -
Signal enhancement in microstructured silicon attenuated total reflection elements with quantum cascade laser-based spectroscopy
(Peer reviewed; Journal article, 2020)Sensors in mid-infrared spectroscopy based on attenuated total reflection (ATR) sensing with internal reflection elements (IREs) facilitate easier measurements of aqueous solutions or other opaque analytes. Micromachined ... -
Spatial Resolution Enhancement of Hyperspectral Images from Miniaturized Sensors
(Peer reviewed; Journal article, 2023)Here we describe and mitigate issues of optical aberrations related to wavelength-dependent blur caused by miniaturization in hyperspectral pushbroom image sensors, which degrade spatial resolution and limit their usefulness. ... -
Subjective evaluations of example-based, total variation, and joint regularization for image processing
(Journal article; Peer reviewed, 2012)We report on subjective experiments comparing example-based regularization, total variation regularization, and the joint use of both regularizers. We focus on the noisy deblurring problem, which generalizes image supe ... -
Termites: a Retinex implementation based on a colony of agents
(Journal article; Peer reviewed, 2012)This paper describes a novel implementation of the Retinex algorithm with the exploration of the image done by an ant swarm. In this case the purpose of the ant colony is not the optimization of some constraints but is ... -
The effect of dimensionality reduction on signature-based target detection for hyperspectral imaging
(Journal article; Peer reviewed, 2019)Target detection is one of the more popular applications of hyperspectral remote sensing. To enhance the detection rate, it is common to do preprocessing to reduce the effects of noise and other forms of undesired interference ... -
Towards real-time non contact spatial resolved oxygenation monitoring using a multi spectral filter array camera in various light conditions
(Journal article; Peer reviewed, 2018)Non contact spatial resolved oxygenation measurements remain an open challenge in the biomedical field and non contact patient monitoring. Although point measurements are the clinical standard till this day, regional ... -
Vessel contrast enhancement in hyperspectral images
(Journal article; Peer reviewed, 2015)Imaging of vessel structures can be useful for investigation of endothelial function, angiogenesis and hyper-vascularization. This can be challenging for hyperspectral tissue imaging due to photon scattering and absorption ...