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Imaging"],"abstract":"<jats:p>The aim of this work is to present the utilization of Hyperspectral Imaging for studying the stability of painting samples to simulated solar radiation, in order to evaluate their use in the restoration field. In particular, ready-to-use commercial watercolours and powder pigments were tested, with these last ones being prepared for the experimental by gum Arabic in order to propose a possible substitute for traditional reintegration materials. Samples were investigated through Hyperspectral Imaging in the short wave infrared range before and after artificial ageing procedure performed in Solar Box chamber under controlled conditions. Data were treated and elaborated in order to evaluate the sensitivity of the Hyperspectral Imaging technique to identify the variations on paint layers, induced by photo-degradation, before they could be detected by eye. Furthermore, a supervised classification method for monitoring the painted surface changes, adopting a multivariate approach was successfully applied.<\/jats:p>","DOI":"10.3390\/jimaging5010008","type":"journal-article","created":{"date-parts":[[2019,1,3]],"date-time":"2019-01-03T03:36:30Z","timestamp":1546486590000},"page":"8","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Hyperspectral Imaging as Powerful Technique for Investigating the Stability of Painting Samples"],"prefix":"10.3390","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6935-2686","authenticated-orcid":false,"given":"Giuseppe","family":"Bonifazi","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering Materials &amp; Environment, Sapienza, Rome University, Via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1914-7275","authenticated-orcid":false,"given":"Giuseppe","family":"Capobianco","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering Materials &amp; Environment, Sapienza, Rome University, Via Eudossiana 18, 00184 Rome, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1338-5267","authenticated-orcid":false,"given":"Claudia","family":"Pelosi","sequence":"additional","affiliation":[{"name":"Department of Economics, Engineering, Society and Business Organization, Laboratory of Diagnostics and Materials Science, University of Tuscia, Largo dell\u2019Universit\u00e0, 01100 Viterbo, Italy"}]},{"given":"Silvia","family":"Serranti","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering Materials &amp; Environment, Sapienza, Rome University, Via Eudossiana 18, 00184 Rome, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2019,1,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.culher.2017.01.013","article-title":"Hyperspectral imaging combined with data classification techniques as an aid for artwork authentication","volume":"26","author":"Polak","year":"2017","journal-title":"J. Cult. Herit."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Zucco, M., Pisani, M., and Cavaleri, T. (2017). Fourier transform hyperspectral imaging for cultural heritage. Fourier Transforms\u2013High-Tech Application and Current Trends, INTECH.","DOI":"10.5772\/66107"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"011003","DOI":"10.1117\/1.JEI.26.1.011003","article-title":"Hyperspectral imaging as a technique for investigating the effect of consolidating materials on wood","volume":"26","author":"Bonifazi","year":"2016","journal-title":"J. Electron. Imaging"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"91060B","DOI":"10.1117\/12.2049941","article-title":"Pigment identification in pictorial layers by Hyper-spectral Imaging","volume":"9106","author":"Capobianco","year":"2014","journal-title":"Proc. SPIE"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1016\/j.microc.2017.01.007","article-title":"Chemometrics approach to FT-IR hyperspectral imaging analysis of degradation products in artwork cross-section","volume":"132","author":"Capobianco","year":"2017","journal-title":"Microchem. J."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1179\/sic.2006.51.Supplement-1.3","article-title":"Multispectral and hyperspectral imaging technologies in conservation: Current research and potential applications","volume":"51","author":"Fischer","year":"2006","journal-title":"Stud. Conserv."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1016\/j.saa.2017.01.015","article-title":"An explorative chemometric approach applied to hyperspectral images for the study of illuminated manuscripts","volume":"177","author":"Catelli","year":"2017","journal-title":"Spectrochim. Acta A"},{"key":"ref_8","first-page":"380536","article-title":"Surface investigation of photo-degraded wood by colour monitoring, infrared spectroscopy and hyperspectral imaging","volume":"1","author":"Agresti","year":"2013","journal-title":"J. Spectrosc."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1016\/j.polymdegradstab.2015.01.001","article-title":"Modelling color and chemical changes on normal and red heart beech wood by reflectance spectrophotometry, Fourier Transform infrared spectroscopy and hyperspectral imaging","volume":"113","author":"Bonifazi","year":"2015","journal-title":"Polym. Degrad. Stab."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.aca.2015.06.056","article-title":"Validation of chemometric models\u2014A tutorial","volume":"893","author":"Westad","year":"2015","journal-title":"Anal. Chim. Acta"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1016\/j.talanta.2014.07.026","article-title":"Near infrared spectral imaging for the analysis of dynamite residues on human handprints","volume":"130","author":"Amigo","year":"2014","journal-title":"Talanta"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"981","DOI":"10.1016\/j.jhazmat.2017.11.056","article-title":"Asbestos containing materials detection and classification by the use of hyperspectral imaging","volume":"344","author":"Bonifazi","year":"2017","journal-title":"J. Hazard. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1002\/cem.986","article-title":"Hyperspectral NIR image regression part II: Dataset preprocessing diagnostics","volume":"20","author":"Burger","year":"2006","journal-title":"J. Chemometr."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"948","DOI":"10.1016\/j.foodchem.2008.10.047","article-title":"Prediction of the identity of fats and oils by their fatty acid, triacylglycerol and volatile compositions using PLS-DA","volume":"118","author":"Villegas","year":"2010","journal-title":"Food Chem."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1016\/j.saa.2016.09.028","article-title":"Classification and quantification of palm oil adulteration via portable NIR spectroscopy","volume":"173","author":"Basri","year":"2017","journal-title":"Spectrochim. Acta A"},{"key":"ref_16","first-page":"134","article-title":"Two aboriginal rock art pigments from western Australia: Their properties, use, and durability","volume":"21","author":"Clarke","year":"1976","journal-title":"Stud. Conserv."},{"key":"ref_17","unstructured":"Levison, H.W. (1976). Artists\u2019 Pigments: Lightfastness Tests and Ratings: The Permanency of Artists\u2019 Colors and an Evaluation of Modern Pigments, Colorlab."},{"key":"ref_18","unstructured":"Rossi, S. (2016). Studio Della Stabilit\u00e0 di Acquerelli Commerciali e Pigmenti Naturali per la Reintegrazione dei Beni Culturali. [Bachelor\u2019s Thesis, University of Tuscia]."},{"key":"ref_19","first-page":"1","article-title":"Colour measurements of surfaces to evaluate the restoration materials","volume":"8084","author":"Marabelli","year":"2011","journal-title":"Proc. SPIE"},{"key":"ref_20","unstructured":"Bonelli, M., D\u2019Agostino, L., and Mercalli, M. (2011). La verifica della durabilit\u00e0 dei colori ad acquerello impiegati nella reitegrazione pittorica dei dipinti murali. A Scuola di Restauro, Gangemi Editore."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Stoner, J.H., and Rischfield, R. (2012). Conservation of Easel Paintings (Routledge Series in Conservation and Museology), Taylor & Francis. [1st ed.].","DOI":"10.4324\/9780080941691"},{"key":"ref_22","unstructured":"Rebecca, E., Smithen, P., and Turnbull, R. (2010). Mixing and Matching. Approaches to Retouching Paintings, Archetype Publications in Association with the Icon Paintings Group and the British Association of Paintings Conservators-Restorers (BAPCR)."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1016\/j.chroma.2005.04.075","article-title":"Characterisation of natural polysaccharides (plant gums) used as binding media for artistic and historic works by capillary zone electrophoresis","volume":"1077","author":"Harrison","year":"2005","journal-title":"J. Chromatogr. A"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1179\/sic.2005.50.1.45","article-title":"British watercolour cakes from the eighteenth to the early twentieth century","volume":"50","author":"Ormsby","year":"2005","journal-title":"Stud. Conserv."},{"key":"ref_25","unstructured":"Caruso, S. (2006). Caratterizzazione e Invecchiamento di Leganti Pittorici a Base di Gomme Vegetali. [Ph.D. Thesis, University of Torino]."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1016\/j.chroma.2007.10.056","article-title":"Gas chromatographic-mass spectrometric characterisation of plant gums in samples from painted works of art","volume":"1175","author":"Bonaduce","year":"2007","journal-title":"J. Chromatogr. A"},{"key":"ref_27","first-page":"22","article-title":"Watercolour identification based on machine vision analysis","volume":"7","author":"Kokla","year":"2010","journal-title":"e-Preserv. Sci."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1159","DOI":"10.1007\/s00216-009-3325-4","article-title":"Advances in identification of plant gums in cultural heritage by thermally assisted hydrolysis and methylation","volume":"396","author":"Riedo","year":"2010","journal-title":"Anal. Bioanal. Chem."},{"key":"ref_29","unstructured":"Russell, W., and de Abney, W. (1888). Report on the Action of Light on Watercolours to the Science and Art Department of the Committee of Council on Education."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Brommelle, N.S. (1964). The Russell and Abney report on the action of light on watercolours. Stud. Conserv., 9.","DOI":"10.2307\/1505213"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"144","DOI":"10.1179\/sic.1990.35.s1.030","article-title":"Studies on the photochemical stability of synthetic resin-based retouching paints: The effect of white pigments and extenders","volume":"35","author":"Whitmore","year":"1990","journal-title":"Stud. Conserv."},{"key":"ref_32","unstructured":"Digney-Peer, S., Thomas, K., Perry, R., Townsend, J., and Gritt, S. (2012). The imitative retouching of easel paintings. Conservation of Easel Paintings (Routledge Series in Conservation and Museology), Routledge. [1st ed.]."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1179\/2047058413Y.0000000108","article-title":"Photochemical colour change for traditional watercolour pigments in low oxygen levels","volume":"60","author":"Lerwill","year":"2015","journal-title":"Stud. Conserv."},{"key":"ref_34","unstructured":"Lewill, A. (2011). Micro-Fading Spectrometry: An Investigation into the Display of Traditional Watercolour Pigments in Anoxia. [Ph.D. Thesis, Nottingham Trent University]."},{"key":"ref_35","unstructured":"Callede, B. (1975). Stabilit\u00e9 des Couleurs Utilis\u00e9es en Restauration, Pigments Bleus, Comit\u00e9 pour la Conservation de l\u2019ICOM 4\u00e9me Reunion Triennale, ICOM."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1179\/sic.2000.45.Supplement-1.51","article-title":"An investigation of the photochemical stability of urea-aldehyde resin retouching paints: Removability tests and colour spectroscopy","volume":"45","author":"Lomax","year":"2000","journal-title":"Stud. Conserv."},{"key":"ref_37","first-page":"49","article-title":"The photo-ageing behaviour of selected watercolour paints under anoxic conditions","volume":"2","author":"Korenberg","year":"2008","journal-title":"Br. Mus. Tech. Res. Bull."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/2050-7445-2-2","article-title":"Museum factors affecting the ageing process of organic materials: Review on experimental designs and the INVENVORG project as a pilot study","volume":"2","author":"Dellaportas","year":"2014","journal-title":"Herit. Sci."},{"key":"ref_39","first-page":"329","article-title":"Colorimetric analysis of two watercolours used in retouching","volume":"5","author":"Calvo","year":"2014","journal-title":"Int. J. Conserv. Sci."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1148","DOI":"10.1016\/j.matchar.2007.04.027","article-title":"Effects of ageing on different binders for retouching and on some binder\u2013pigment combinations used for restoration of wall paintings","volume":"58","author":"Ropret","year":"2007","journal-title":"Mater. Charact."},{"key":"ref_41","unstructured":"Pelosi, C., Marabelli, M., Patrizi, F., Ortenzi, F., Giurlanda, F., and Falcucci, C. (2009). Valutazione della Stabilit\u00e0 degli Acquerelli nel Restauro Attraverso Misure di Colore, Atti della V Conferenza Nazionale del Gruppo Colore, StarryLink Editrice."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1016\/S1871-1731(07)80007-8","article-title":"Hyperspectral imaging: A new technique for the non-invasive study of artworks","volume":"2","author":"Kubik","year":"2007","journal-title":"Phys. Tech. Study Art Archaeol. Cult. Herit."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1488","DOI":"10.1039\/c3ay41904e","article-title":"Characterisation of colourants on illuminated manuscripts by portable fibre optic UV-visible-NIR reflectance spectrophotometry","volume":"6","author":"Aceto","year":"2014","journal-title":"Anal. Methods"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"584","DOI":"10.1366\/000370210791414443","article-title":"Visible and infrared imaging spectroscopy of Picasso\u2019s Harlequin musician: Mapping and identification of artist materials in situ","volume":"64","author":"Delaney","year":"2010","journal-title":"Appl. Spectrosc."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"856","DOI":"10.1016\/j.microc.2015.07.025","article-title":"UV\u2013Vis-NIR and micro Raman spectroscopies for the non destructive identification of Cd1-xZnxS solid solutions in cadmium yellow pigments","volume":"124","author":"Rosi","year":"2016","journal-title":"Microchem. J."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"728","DOI":"10.1021\/ar100010t","article-title":"In situ noninvasive study of artworks: The MOLAB multitechnique approach","volume":"43","author":"Miliani","year":"2010","journal-title":"Acc. Chem. Res."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1016\/S1296-2074(02)01216-5","article-title":"A novel hyper-spectral imaging apparatus for the non-destructive analysis of objects of artistic and historic value","volume":"4","author":"Balas","year":"2003","journal-title":"J. Cult. Herit."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1016\/j.saa.2016.06.009","article-title":"Analysis and structural characterization of pigments and materials used in Nicolae Grigorescu heritage paintings","volume":"168","author":"Rusu","year":"2016","journal-title":"Spectrochim. Acta A"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1016\/j.saa.2014.03.096","article-title":"Applicability of a diffuse reflectance infrared Fourier transform handheld spectrometer to perform in situ analyses on cultural heritage materials","volume":"129","author":"Arrizabalaga","year":"2014","journal-title":"Spectrochim. Acta A"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"308","DOI":"10.1016\/j.saa.2014.01.017","article-title":"Determination of the pigments present in a wallpaper of the middle nineteenth century: The combination of mid-diffuse reflectance and far infrared spectroscopies","volume":"124","author":"Arrizabalaga","year":"2014","journal-title":"Spectrochim. Acta A"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"954","DOI":"10.1016\/j.saa.2010.08.027","article-title":"Application of photoacoustic infrared spectroscopy in the forensic analysis of artists\u2019 inorganic pigments","volume":"77","author":"Barsan","year":"2010","journal-title":"Spectrochim. Acta A"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.saa.2017.02.019","article-title":"Identification of natural red and purple dyes on textiles by fiber-optics reflectance spectroscopy","volume":"178","year":"2017","journal-title":"Spectrochim. Acta A"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"534","DOI":"10.1016\/j.saa.2014.03.099","article-title":"Comparison of pigment content of paint samples using spectrometric methods","volume":"130","author":"Kowalski","year":"2014","journal-title":"Spectrochim. Acta A"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"142","DOI":"10.1016\/j.saa.2017.01.011","article-title":"Non-invasive techniques for revealing the palette of the Romantic painter Francesco Hayez","volume":"176","author":"Rampazzi","year":"2017","journal-title":"Spectrochim. Acta A"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1016\/j.saa.2016.05.027","article-title":"Discovering \u201cThe Italian Flag\u201d by Fernando Melani (1907\u20131985)","volume":"168","author":"Carlesi","year":"2016","journal-title":"Spectrochim. Acta A"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/s40494-016-0075-4","article-title":"Visible and infrared imaging spectroscopy of paintings and improved reflectography","volume":"4","author":"Delaney","year":"2016","journal-title":"Herit. Sci."},{"key":"ref_57","first-page":"3","article-title":"Spectroscopy of rocks and minerals, and principles of spectroscopy","volume":"Volume 3","author":"Clark","year":"1999","journal-title":"Manual of Remote Sensing, Remote Sensing for the Earth Sciences"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"5607","DOI":"10.1002\/anie.201200840","article-title":"Near infrared reflectance imaging spectroscopy to map paint binders in situ on illuminated manuscripts","volume":"51","author":"Ricciardi","year":"2012","journal-title":"Angew. Chem. Int. Edit."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"4838","DOI":"10.1039\/c3an00926b","article-title":"Mapping of egg yolk and animal skin glue paint binders in Early Renaissance paintings using near infrared reflectance imaging spectroscopy","volume":"138","author":"Dooley","year":"2013","journal-title":"Analyst"},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"92","DOI":"10.1016\/j.saa.2018.03.008","article-title":"A methodological approach to study the stability of selected watercolours for painting reintegration, through reflectance spectrophotometry, Fourier transform infrared spectroscopy and hyperspectral imaging","volume":"198","author":"Pelosi","year":"2018","journal-title":"Spectroch. Acta A"},{"key":"ref_61","first-page":"39","article-title":"Iron oxide pigments","volume":"Volume 4","author":"Barrie","year":"2007","journal-title":"Artistis\u2019 Pigments. A Handbook of Their History and Characteristics"},{"key":"ref_62","unstructured":"(2013). Paint and Varnishes: Methods of Exposures to Laboratory Light Sources-Part 1: General Guidance, ISO. ISO 16474-1."},{"key":"ref_63","unstructured":"(2013). Paint and Varnishes\u2014Methods of Exposure to Laboratory Light Sources-Part 1: Xenon-Arc Lamp, ISO. ISO16474-2."},{"key":"ref_64","doi-asserted-by":"crossref","unstructured":"Grahn, H., and Geladi, P. (2007). Techniques and Applications of Hyperspectral Image Analysis, John Wiley & Sons.","DOI":"10.1002\/9780470010884"},{"key":"ref_65","unstructured":"Otto, M. (1999). Chemometrics, Statistics and Computer Application in Analytical Chemistry, Wiley-VCH."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1016\/j.chemolab.2012.05.009","article-title":"Pre-processing of hyperspectral images. Essential steps before image analysis","volume":"117","author":"Vidal","year":"2012","journal-title":"Chemometr. Intell. Lab."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"1201","DOI":"10.1016\/j.trac.2009.07.007","article-title":"Review of the most common pre-processing techniques for near-infrared spectra","volume":"28","author":"Rinnan","year":"2009","journal-title":"TrAC-Trend Anal. Chem."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1016\/j.aca.2015.09.030","article-title":"Hyperspectral image analysis. A tutorial","volume":"896","author":"Amigo","year":"2015","journal-title":"Anal. Chim. Acta"},{"key":"ref_69","doi-asserted-by":"crossref","unstructured":"Rinnan, \u00c5, N\u00f8rgaard, L., van den Berg, F., Thygesen, J., Bro, R., and Engelsen, S.B. (2009). Data pre-processing. Infrared Spectroscopy for Food Quality Analysis and Control, Academic Press. Chapter 2.","DOI":"10.1016\/B978-0-12-374136-3.00002-X"},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"2812","DOI":"10.1039\/C3AY41907J","article-title":"Principal component analysis","volume":"6","author":"Bro","year":"2014","journal-title":"Anal. Methods"},{"key":"ref_71","unstructured":"Parvin, H., Alizadeh, H., and Minaei-Bidgoli, B. (2008). MKNN: Modified k-nearest neighbour. Proceedings of the World Congress on Engineering and Computer Science 2008 (WCECS 2008), Newswood Limited."},{"key":"ref_72","first-page":"2348","article-title":"Detection of brain tumor using classification algorithm","volume":"1","author":"Chitari","year":"2014","journal-title":"Int. J. Invent. Comput. Sci. Eng."},{"key":"ref_73","unstructured":"Duda, R.O., Hart, P.E., and Stork, D.G. (2012). Pattern Classification, John Wiley & Sons."},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"576437","DOI":"10.1155\/2015\/576437","article-title":"Exploring sampling in the detection of multicategory EEG signals","volume":"2015","author":"Siuly","year":"2015","journal-title":"Comput. Math. Methods Med."},{"key":"ref_75","first-page":"605","article-title":"Application of K-Nearest Neighbor (KNN) approach for predicting economic events: Theoretical background","volume":"3","author":"Imandoust","year":"2013","journal-title":"Int. J. Eng. Res. Appl."},{"key":"ref_76","doi-asserted-by":"crossref","first-page":"407","DOI":"10.1631\/jzus.C1200303","article-title":"Accelerated k-nearest neighbours algorithm based on principal component analysis for text categorization","volume":"14","author":"Du","year":"2013","journal-title":"J. Zhejiang Univ. Sci. C"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1016\/j.gexplo.2005.07.002","article-title":"Mapping Fe-bearing hydrated sulphate minerals with short wave infrared (SWIR) spectral analysis at San Miguel mine environment, Iberian Pyrite Belt (SW Spain)","volume":"87","author":"Velasco","year":"2005","journal-title":"J. Geochem. Explor."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"1631","DOI":"10.1002\/rcm.5027","article-title":"Classification of protein binders in artist\u2019s paints by matrix-assisted laser desorption\/ionisation time-of-flight mass spectrometry: And evaluation of principal component analysis (PCA) and soft independent modelling of class analogy (SIMCA)","volume":"25","author":"Fremout","year":"2011","journal-title":"Rapid Commun. Mass Spectrom."},{"key":"ref_79","doi-asserted-by":"crossref","first-page":"60","DOI":"10.2174\/157341110790069600","article-title":"Chemometrics and Laser Induced Breakdown Spectroscopy (LIBS) analyses for identification of wall paintings pigments","volume":"6","author":"Detalle","year":"2010","journal-title":"Curr. Anal. Chem."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1016\/j.talanta.2007.12.020","article-title":"Comparison between traditional strategies and classification technique (SIMCA) in the identification of old proteinaceous binders","volume":"75","author":"Manzano","year":"2008","journal-title":"Talanta"},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"1443","DOI":"10.1007\/s00216-011-5287-6","article-title":"Multivariate classification of pigments and inks using combined Raman spectroscopy and LIBS","volume":"402","author":"Hoehse","year":"2012","journal-title":"Anal. Bioanal. Chem."},{"key":"ref_82","doi-asserted-by":"crossref","first-page":"12653","DOI":"10.1029\/JB095iB08p12653","article-title":"High spectral resolution reflectance spectroscopy of minerals","volume":"95","author":"Clark","year":"1990","journal-title":"J. Geophys. Res."},{"key":"ref_83","first-page":"73","article-title":"Fading and colour change of Prussian blue: Methods of manufacture and the influence of extenders","volume":"25","author":"Kirby","year":"2004","journal-title":"Natl. Gallery Tech. Bull."}],"container-title":["Journal of Imaging"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2313-433X\/5\/1\/8\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T12:23:18Z","timestamp":1760185398000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2313-433X\/5\/1\/8"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,1,3]]},"references-count":83,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2019,1]]}},"alternative-id":["jimaging5010008"],"URL":"https:\/\/doi.org\/10.3390\/jimaging5010008","relation":{},"ISSN":["2313-433X"],"issn-type":[{"value":"2313-433X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,1,3]]}}}