Search results for "Point detector"

showing 3 items of 3 documents

Virtual point detector: Application to coincidence-summing correction in gamma-ray spectrometry

2009

The use of an efficiency transfer method based on the virtual point detector approximation to evaluate coincidence-summing correction values for point and volume sources was examined. The method was validated by means of a comparison with experimental efficiency determinations.

PhysicsRadiationbusiness.industrySettore ING-IND/20 - Misure E Strumentazione NucleariPoint detectorGamma-ray spectrometryCoincidence-summingCoincidenceOpticsVolume (thermodynamics)Point (geometry)Virtual point detectorbusinessGamma ray spectrometry
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HarrisZ$^+$: Harris Corner Selection for Next-Gen Image Matching Pipelines

2022

Due to its role in many computer vision tasks, image matching has been subjected to an active investigation by researchers, which has lead to better and more discriminant feature descriptors and to more robust matching strategies, also thanks to the advent of the deep learning and the increased computational power of the modern hardware. Despite of these achievements, the keypoint extraction process at the base of the image matching pipeline has not seen equivalent progresses. This paper presents HarrisZ$^+$, an upgrade to the HarrisZ corner detector, optimized to synergically take advance of the recent improvements of the other steps of the image matching pipeline. HarrisZ$^+$ does not onl…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniFOS: Computer and information sciencesHarris detectorSettore INF/01 - InformaticaComputer Vision and Pattern Recognition (cs.CV)ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONComputer Science - Computer Vision and Pattern Recognitionlocal featurecorner detectorArtificial IntelligenceSignal Processingkeypoint detectorStructure-from-MotionComputer Vision and Pattern RecognitionHarrisZSoftware
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Valutazione di efficienze fotoelettriche per uno scintillatore LaBr3(Ce) tramite un approccio Virtual Point Detector

2019

L’impiego di uno scintillatore a Bromuro di Lantanio, LaBr3(Ce), come strumento di misura della attività (o concentrazione) in un dato campione, richiede la valutazione delle efficienze fotoelettriche o la conoscenza di una corrispondente curva di calibrazione. Oltre ai consueti metodi basati sull’impiego di sorgenti calibrate aventi la stessa forma e composizione del campione in esame, o metodi Monte Carlo, uno strumento rapido di valutazione delle efficienze può essere rappresentato dall'applicazione della semplificazione “Virtual Point Detector” (VPD), ovvero con il rilevatore assunto equivalente a un punto virtuale all’interno del cristallo dove si può considerare avvengano tutte le int…

efficienzevirtual point detectorSettore ING-IND/20 - Misure E Strumentazione NucleariSpettrometria gammascintillatore LaBr3(Ce)
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