Search results for "CIELAB"

showing 7 items of 7 documents

Dal colore alla caratterizzazione ottica di pigmenti antichi: validità del metodo spettrofotometrico e Teoria di Itten

2014

CIELAB spettrofotometria SRF% pigmentoSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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Specificazione del colore di provini di terracotta calatina

2011

La classificazione della ceramica da scavo prevede l’attribuzione di una tinta ad ogni coccio rinvenuto, ma l’uso regolare di un sistema per la specificazione del colore è ad oggi un problema aperto. Gli archeologi prediligono le Munsell Soil Color Chart ma la classificazione che ne deriva, oltre che della soggettività insita in tale sistema, soffre di un’ulteriore variabile legata alla difficile realizzazione sui siti di scavo delle condizioni di illuminazione controllata necessarie per il confronto tra le tavole e i cocci. Il colore della ceramica è inoltre fortemente dipendente dalle condizioni di cottura per cui anche manufatti realizzati con le stesse materie prime possono presentare e…

Ceramica specificazione del colore spazio CIELab
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Colour Specification of Terracotta Calatina Specimens

2012

Colour measurements CIELAB1976 SRF (%) XRD
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Multimodal Images Classification using Dense SURF, Spectral Information and Support Vector Machine

2019

International audience; The multimodal image classification is a challenging area of image processing which can be used to examine the wall painting in the cultural heritage domain. In such classification, a common space of representation is important. In this paper, we present a new method for multimodal representation learning, by using a pixel-wise feature descriptor named dense Speed Up Robust Features (SURF) combined with the spectral information carried by the pixel. For classification of extracted features we have used support vector machine (SVM). Our database was extracted from acquisition on cultural heritage wall paintings that contain four modalities UV, Visible, IRR and fluores…

Computer scienceComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONImage processing02 engineering and technologyImage (mathematics)0202 electrical engineering electronic engineering information engineeringFeature descriptorRepresentation (mathematics)Spectral informationSpeeded up robust features SURFGeneral Environmental SciencePixelbusiness.industry[INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV]020206 networking & telecommunicationsPattern recognitionSVM classificationSupport vector machineCultural heritageMultimodal imagesCielab spaceDense features[INFO.INFO-TI]Computer Science [cs]/Image Processing [eess.IV]General Earth and Planetary Sciences020201 artificial intelligence & image processingArtificial intelligencebusinessFeature learning
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The effect of particle size on pigments colour

2014

Pigment size SRF% CIELABSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)
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Ruolo della granulometria sul colore dei pigmenti

2014

Sedimentazione SRF Riflettanza Colore CIELAB Tinta SaturazioneSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Settore CHIM/12 - Chimica Dell'Ambiente E Dei Beni Culturali
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Accuracy of an Affordable Smartphone-Based Teledermoscopy System for Color Measurements in Canine Skin

2020

Quality smartphone cameras and affordable dermatoscopes have enabled teledermoscopy to become a popular medical and veterinary tool for analyzing skin lesions such as melanoma and erythema. However, smartphones acquire images in an unknown RGB color space, which prevents a standardized colorimetric skin analysis. In this work, we supplemented a typical veterinary teledermoscopy system with a conventional color calibration procedure, and we studied two mid-priced smartphones in evaluating native and erythematous canine skin color. In a laboratory setting with the ColorChecker, the teledermoscopy system reached CIELAB-based color differences &Delta

Skin erythemaErythemaComputer scienceHuman skinlcsh:Chemical technology01 natural sciencesBiochemistryAnalytical Chemistry0403 veterinary sciencecolor correctionColorCheckererythema indexlcsh:TP1-1185Computer visionDog Diseasessmartphone teledermoscopycanine skincolor calibrationColorimetryMelanomaInstrumentationSkincolorcheckerColor calibrationintegumentary systemColor constancyColor correction04 agricultural and veterinary sciencesAtomic and Molecular Physics and OpticsCIELAB color spaceRGB color spaceSmartphonemedicine.symptomcolor constancySkin lesion040301 veterinary sciencesColorDermoscopyArticle010309 opticsDogs0103 physical sciencesmedicineAnimalsHumansElectrical and Electronic Engineeringcolor calibration targetbusiness.industryveterinary dermatologyErythemaSkin colorArtificial intelligencebusinessSensors
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