2025

• Shanthini, K.S.; Francis, Jobin; George, Sudhish N.; George, Sony; Melit Devassy, Binu. (2025) Early bruise detection, classification and prediction in strawberry using Vis-NIR hyperspectral imaging. Food Control
  Academic article
• Francis, Jobin; George, Sony; Melit Devassy, Binu; George, Sudhish N.. (2025) Development of a unified framework of low-rank approximation and deep neural networks for predicting the spatial variability of SSC in `Spania' watermelons using vis/NIR hyperspectral imaging. Postharvest Biology and Technology
  Academic article
• K.S., Shanthini; George, Sudhish N.; O.V., Athul Chandran; K.M., Jinumol; P., Keerthana; Francis, Jobin. (2025) NorBlueNet: Hyperspectral imaging-based hybrid CNN-transformer model for non-destructive SSC analysis in Norwegian wild blueberries. Computers and Electronics in Agriculture
  Academic article

2024

• Sharma, Deepshikha; Schmidt-Ott, Katharina; Rothenhaeusler, Ulrike; George, Sony; Joseph, Edith; Lombardo, Tiziana. (2024) Application of hyperspectral imaging for characterization of VOC-induced historical glass corrosion. The European Physical Journal Plus
  Academic article
• Storeide, Markus Sebastian Bakken; George, Sony; Sole, Aditya Suneel; Hardeberg, Jon Yngve. (2024) 3D Object Quality Metrics and their Differences: How Can We Evaluate Quality of Digitization?. Archiving Conference
  Academic article
• Storeide, Markus Sebastian Bakken; George, Sony; Sole, Aditya Suneel; Hardeberg, Jon Yngve. (2024) Evaluating Entropy of Geometric Accuracy in 3D Objects During Mesh Simplification. Journal of Imaging Science and Technology
  Academic article
• Khawaja, Muhammad Arsalan; George, Sony; Marzani, Franck; Hardeberg, Jon Yngve; Mansouri, Alamin. (2024) Self-supervised classification of surfaces using reflectance transformation imaging. CEUR Workshop Proceedings
  Academic article
• Sandana, J. Sudaroli; Deivalakshmi, S.; George, Sony. (2024) MMDAN: multiwavelet based multiscale dilated attention network for remote sensing image super-resolution. Signal, Image and Video Processing
  Academic article
• Grillini, Federico; de Ferri, Lavinia; Pantos, George Alexis; George, Sony; Veseth, Margunn. (2024) Reflectance imaging spectroscopy for the study of archaeological pre-Columbian textiles. Microchemical Journal
  Academic article
• Grillini, Federico; Aksas, Lyes; Lapray, Pierre-Jean; Foulonneau, Alban; Thomas, Jean-Baptiste Denis; George, Sony. (2024) Relationship between reflectance and degree of polarization in the VNIR-SWIR: A case study on art paintings with polarimetric reflectance imaging spectroscopy. PLOS ONE
  Academic article

2023

• Storeide, Markus Sebastian Bakken; George, Sony; Sole, Aditya Suneel; Hardeberg, Jon Yngve. (2023) Standardization of digitized heritage: a review of implementations of 3D in cultural heritage. Heritage Science
  Academic literature review
• Khawaja, Muhammad Arsalan; George, Sony; Marzani, Franck; Hardeberg, Jon Yngve; Mansouri, Alamin. (2023) Can Surface Topography Give Us Best Light Positions for Reflectance Transformation Imaging?. Archiving Conference
  Academic article
• Storeide, Markus Sebastian Bakken; George, Sony. (2023) Pixel-based Vertex Clustering for Spectral Data Enrichment of Planar Point Clouds. Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Mandal, Dipendra Jee; Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve. (2023) Unsupervised Clustering for Works of Art Using Hyperspectral Imaging: A Case Study on Edvard Munch's Self-Portrait (1905). Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Papanikolaou, Athanasia; George, Sony; Sole, Aditya Suneel; Trumpy, Giorgio; Kujawinska, Malgorzata. (2023) Multimodal Measurement of Parchment Using a Custom 3D Scanner. Archiving Conference
  Academic article
• Sharma, Deepshikha; Nurit, Marvin; Rothenhäusler, Ulrike; Schmidt-Ott, Katharina; Joseph, Edith; George, Sony. (2023) Application of Reflectance Transformation Imaging for visualizing early signs of corrosion in historical glass corrosion. Archiving Conference
  Academic article
• Grillini, Federico; Thomas, Jean-Baptiste Denis; George, Sony. (2023) Full VNIR-SWIR hyperspectral imaging workflow for the monitoring of archaeological textiles. Archiving Conference
  Academic article
• Melit Devassy, Binu; George, Sony. (2023) Forensic Document Analysis Using Hyperspectral Imaging and Deep Convolutional Spectral Clustering. Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Francis, Jobin; Melit Devassy, Binu; George, Sudhish N; George, Sony. (2023) Quantitative Assessment of Hayward Kiwi Soluble Solids Content Prediction Using Hyperspectral Imaging. Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Ciortan, Irina-Mihaela; George, Sony; Hardeberg, Jon Yngve. (2023) The Influence of Interreflections on Shape From Fluorescence. Color and Imaging Conference (CIC)
  Academic article
• Khawaja, Muhammad Arsalan; George, Sony; Marzani, Franck; Hardeberg, Jon Yngve; Mansouri, Alamin. (2023) An interactive method for adaptive acquisition in Reflectance Transformation Imaging for cultural heritage. IEEE International Conference on Computer Vision Workshop (ICCVW)
  Academic article
• Storeide, Markus Sebastian Bakken; George, Sony; Sole, Aditya Suneel; Hardeberg, Jon Yngve. (2023) Statistical Evaluation of 3D Manifolds Shape Retention during Simplification Stages. Archiving Conference
  Academic article
• Khawaja, Muhammad Arsalan; Marzani, Franck; George, Sony; Hardeberg, Jon Yngve; Mansouri, Alamin. (2023) An interactive method for adaptive acquisition in Reflectance Transformation Imaging for cultural heritage. IEEE (Institute of Electrical and Electronics Engineers)
  Academic chapter/article/Conference paper
• Babini, Agnese; Lombardo, Tiziana; Schmidt-Ott, Katharina; George, Sony; Hardeberg, Jon Yngve. (2023) Acquisition strategies for in-situ hyperspectral imaging of stained-glass windows: case studies from the Swiss National Museum. Heritage Science
  Academic article
• Grillini, Federico; Thomas, Jean-Baptiste Denis; George, Sony. (2023) Logistic splicing correction for VNIR–SWIR reflectance imaging spectroscopy. Optics Letters
  Academic article
• Mandal, Dipendra Jee; Pedersen, Marius; George, Sony; Deborah, Hilda; Boust, Clotilde. (2023) An Experiment-based Comparative Analysis of Pigment Classification Algorithms using Hyperspectral Imaging. Journal of Imaging Science and Technology
  Academic article
• Ciortan, Irina-Mihaela; Poulsson, Tina Grette; George, Sony; Hardeberg, Jon Yngve. (2023) Tensor decomposition for painting analysis. Part 1: pigment characterization. Heritage Science
  Academic article
• Ciortan, Irina-Mihaela; Poulsson, Tina Grette; George, Sony; Hardeberg, Jon Yngve. (2023) Tensor decomposition for painting analysis. Part 2: spatio-temporal simulation. Heritage Science
  Academic article
• Yeswanth, P.V.; Deivalakshmi, S.; George, Sony; Ko, Seok-Bum. (2023) Residual Skip Network-Based Super-Resolution for Leaf Disease Detection of Grape Plant. Circuits, systems, and signal processing
  Academic article
• Shanthini, K.S.; George, Sudhish N.; George, Sony; Melit Devassy, Binu. (2023) Hyperspectral fruit image restoration using non-convex optimization. Journal of Food Engineering
  Academic article
• Lumban Tobing, Tabita Anggraini Meilita; Skrabánek, Pavel; Yildirim-Yayilgan, Sule; George, Sony; Elgvin, Torleif. (2023) Character-based Writer Verification of Ancient Hebrew Square-script Manuscripts: On Edge-direction Feature. Archiving Conference
  Academic article
• Francis, Jobin; Madathil, Baburaj; George, Sudhish N.; George, Sony. (2023) A Nonconvex Low Rank and Sparse Constrained Multiview Subspace Clustering via l<inf>1/2</inf>-Induced Tensor Nuclear Norm. IEEE Transactions on Signal and Information Processing over Networks
  Academic article
• Mandal, Dipendra Jee; Pedersen, Marius; George, Sony; Boust, Clotilde. (2023) Comparison of Pigment Classification Algorithms on Non-Flat Surfaces using Hyperspectral Imaging. Journal of Imaging Science and Technology
  Academic article
• Grillini, Federico; Thomas, Jean-Baptiste Denis; George, Sony. (2023) Reflectance imaging spectroscopy: Fusion of VNIR and SWIR for Cultural Heritage analysis. NTNU open
  Doctoral dissertation

2022

• Babini, Agnese; George, Sony; Lombardo, Tiziana; Hardeberg, Jon Yngve. (2022) A Portable Set up for Hyperspectral Imaging of Stained-Glass Panels. Springer
  Academic chapter/article/Conference paper
• Ciortan, Irina-Mihaela; Kiyomoto Arteaga, Isabel Yoko; George, Sony; Hardeberg, Jon Yngve. (2022) Multi-scale Painter Classification. Springer
  Academic chapter/article/Conference paper
• Ciortan, Irina-Mihaela; George, Sony; Hardeberg, Jon Yngve. (2022) Better Sensors, Better Forgers: An Adversarial Loop. Authenticity Studies. International Journal of Archaeology and Art
  Academic article
• Babini, Agnese; Green, Philip John; George, Sony; Hardeberg, Jon Yngve. (2022) Comparison of Hyperspectral Imaging and Fiber-Optic Reflectance Spectroscopy for Reflectance and Transmittance Measurements of Colored Glass. Heritage
  Academic article
• Ciortan, Irina-Mihaela; Poulsson, Tina Grette; George, Sony; Hardeberg, Jon Yngve. (2022) Predicting Pigment Color Degradation with Time Series Models. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper
• Grillini, Federico; Thomas, Jean Baptiste; George, Sony. (2022) Hyperspectral Vnir - Swir Image Registration: Do Not Throw Away Those Overlapping Low Snr Bands. Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Ciortan, Irina-Mihaela; Poulsson, Tina Grette; George, Sony; Hardeberg, Jon Yngve. (2022) Spectral Classification of Paper Fixatives: A Case Study on Thomas Fearnley’s Drawings. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper
• Sharma, Deepshikha; Rothenhaeusler, Ulrike; Schmidt-Ott, Katharina; Nurit, Marvin; Castro Cartagena, Yuly; Le-Goic, Gaetan. (2022) Monitoring and Understanding VOC Induced Glass Corrosion Using Multi-modal Imaging Techniques. Springer
  Academic chapter/article/Conference paper
• Francis, Jobin; K S, Shanthini; George, Sudhish N; George, Sony. (2022) A Tensor Non-Convex Low Rank And Sparse Constrained Band Selection Scheme For Clustering Of Hyperspectral Paper Data. Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing
  Academic article
• Fischer, Thomas; Marchetti-Deschmann, Martina; Cristina Assis, Ana; Levin Elad, Michal; Algarra, Manuel; Barac, Marko. (2022) Profiling and imaging of forensic evidence – A pan-European forensic round robin study part 1: Document forgery. Science & justice
  Academic article
• Lumban Tobing, Tabita; Yildirim Yayilgan, Sule; George, Sony; Elgvin, Torleif. (2022) Isolated Handwritten Character Recognition of Ancient Hebrew Manuscripts. Archiving Conference
  Academic article
• D, Deepthi; Melit Devassy, Binu; George, Sony; Nussbaum, Peter; Tessamma, Thomas. (2022) Classification of forensic hyperspectral paper data using hybrid spectral similarity algorithms. Journal of Chemometrics
  Academic article

2021

• Babini, Agnese; George, Sony; Hardeberg, Jon Yngve. (2021) Hyperspectral imaging workflow for the acquisition and analysis of stained-glass panels. SPIE - The International Society for Optics and Photonics
  Academic chapter/article/Conference paper
• Melit Devassy, Binu; George, Sony. (2021) Forensic analysis of beverage stains using hyperspectral imaging. Scientific Reports
  Academic article
• Ciortan, Irina-Mihaela; George, Sony; Hardeberg, Jon Yngve. (2021) Colour-Balanced Edge-Guided Digital Inpainting: Applications on Artworks. Sensors
  Academic article
• Melit Devassy, Binu; George, Sony. (2021) Estimation of strawberry firmness using hyperspectral imaging: a comparison of regression models. Journal of Spectral Imaging
  Academic article
• Ciortan, Irina-Mihaela; Giachetti, Andrea; George, Sony; Hardeberg, Jon Yngve. (2021) Fluorescence Transformation Imaging. SPIE - The International Society for Optics and Photonics
  Academic chapter/article/Conference paper
• Grillini, Federico; Thomas, Jean Baptiste; George, Sony. (2021) Radiometric spectral fusion of VNIR and SWIR hyperspectral cameras. Color and Imaging Conference (CIC)
  Academic article
• Francis, Jobin; Madathil, Baburaj; George, Sudhish N; George, Sony. (2021) A Robust Tensor-Based Submodule Clustering for Imaging Data Using l1/2 Regularization and Simultaneous Noise Recovery via Sparse and Low Rank Decomposition Approach. Journal of Imaging
  Academic article
• Francis, Jobin; Madathil, Baburaj; George, Sudhish N; George, Sony. (2021) A Comprehensive Tensor Framework for the Clustering of Hyperspectral Paper Data with an Application to Forensic Document Analysis. IEEE Access
  Academic article
• Mandal, Dipendra Jee; George, Sony; Pedersen, Marius; Boust, Clotilde. (2021) Influence of acquisition parameters on pigment classification using hyperspectral imaging. Journal of Imaging Science and Technology
  Academic article
• Grillini, Federico; Thomas, Jean Baptiste; George, Sony. (2021) VisNIR pigment mapping and re-rendering of an experimental painting. Journal of the International Colour Association
  Academic article
• Grillini, Federico; Thomas, Jean Baptiste; George, Sony. (2021) Comparison of Imaging Models for Spectral Unmixing in Oil Painting. Sensors
  Academic article
• Moen, Jon Elias; Nilsen, Vebjørn Johansen; Brox-Saidi, Katherine Asha; Kohmann, Eivind; Melit Devassy, Binu; George, Sony. (2021) Hyperspectral imaging and machine learning for the prediction of SSC in kiwi fruits. NIKT: Norsk IKT-konferanse for forskning og utdanning
  Academic article

2020

• Melit Devassy, Binu; George, Sony. (2020) Dimensionality reduction and visualisation of hyperspectral ink data using t-SNE. Forensic Science International
  Academic article
• Melit Devassy, Binu; George, Sony; Nussbaum, Peter. (2020) Unsupervised Clustering of Hyperspectral Paper Data Using t-SNE. Journal of Imaging
  Academic article
• Pillay, Ruven Lucio Saravana; Picollo, Marcello; Hardeberg, Jon Yngve; George, Sony. (2020) Evaluation of the data quality from a round-robin test of hyperspectral imaging systems. Sensors
  Academic article
• Pillay, Ruven Lucio Saravana; Picollo, Marcello; Hardeberg, Jon Yngve; George, Sony. (2020) Evaluation of the Data Quality from a Round-Robin Test of Hyperspectral Imaging Systems. Sensors
  Academic article
• Melit Devassy, Binu; George, Sony. (2020) Contactless Classification of Strawberry Using Hyperspectral Imaging. CEUR Workshop Proceedings
  Academic article
• Babini, Agnese; George, Sony; Lombardo, Tiziana; Hardeberg, Jon Yngve. (2020) Potential and Challenges of Spectral Imaging for Documentation and Analysis of Stained-Glass Windows. The Society for Imaging Science and Technology
  Academic chapter/article/Conference paper
• Sidorov, Oleksii; Hardeberg, Jon Yngve; George, Sony; Harvey, Joshua; Smithson, Hannah. (2020) Changes in the visual appearance of polychrome wood caused by (accelerated) aging. IS&T International Symposium on Electronic Imaging Science and Technology
  Academic article
• Grillini, Federico; Thomas, Jean Baptiste; George, Sony. (2020) Linear, Subtractive and Logarithmic Optical Mixing Models in Oil Painting. CEUR Workshop Proceedings
  Academic article

2019

• Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve. (2019) Spectral-divergence based pigment discrimination and mapping: A case study on The Scream (1893) by Edvard Munch. Journal of the American Institute for Conservation
  Academic article
• Myrum, Espen; Nørstebø, Simen Andre; George, Sony; Pedersen, Marius; Museth, Jon. (2019) An automatic image-based system for detecting wild and stocked fish. NIKT: Norsk IKT-konferanse for forskning og utdanning
  Academic article
• Bakløkken, Jørgen Grøndahl; Schoeler, Felix Jost; Nørholm, Hugo; Pedersen, Marius; George, Sony; Dervo, Børre Kind. (2019) Automated salamander recognition using deep neural networks and feature extraction. NIKT: Norsk IKT-konferanse for forskning og utdanning
  Academic article
• Pillay, Ruven Lucio Saravana; Hardeberg, Jon Yngve; George, Sony. (2019) Hyperspectral imaging of art: Acquisition and calibration workflows. Journal of the American Institute for Conservation
  Academic article
• Melit Devassy, Binu; George, Sony; Hardeberg, Jon Yngve. (2019) Comparison of Ink Classification Capabilities of Classic Hyperspectral Similarity Features. Proceedings of 2019 International Conference on Document Analysis and Recognition Workshops (ICDARW)
  Academic article
• Melit Devassy, Binu; George, Sony. (2019) Ink Classification Using Convolutional Neural Network. NISK Journal
  Academic article

2018

• Nussbaum, Peter; George, Sony. (2018) 2018 Colour and Visual Computing Symposium (CVCS); 19th and 20th September, 2018, Gjøvik, Norway. IEEE (Institute of Electrical and Electronics Engineers) IEEE (Institute of Electrical and Electronics Engineers)
  Academic anthology/Conference proceedings
• Pitard, Gilles; Le Goïc, Gaëtan; Mansouri, Alamin; Favreliére, Hugues; Pillet, Maurice; George, Sony. (2018) Reflectance-based surface saliency. Proceedings of IEEE International Conference on Image Processing
  Academic article

2017

• Pitard, Gilles; Le Goïc, Gaëtan; Mansouri, Alamin; Favreliére, Hugues; Pillet, Maurice; George, Sony. (2017) Robust Anomaly Detection Using Reflectance Transformation Imaging for Surface Quality Inspection. Springer
  Academic chapter/article/Conference paper
• George, Sony; Hardeberg, Jon Yngve; Linhares, João; MacDonald,, Lindsay; Montagner, Cristina; Nascimento, Sérgio M. C .. (2017) A Study of Spectral Imaging Acquisition and Processing for Cultural Heritage by.
  Chapter
• Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve; Ferrer, Jin Strand; Sandu, Irina Crina Anca. (2017) Old Man in Warnemünde (1907) colouring palette: A case study on the use of hyperspectral imaging for pigment identification. Color and Imaging Conference (CIC)
  Academic article
• Sharma, Vivek; Hardeberg, Jon Yngve; George, Sony. (2017) RGB-NIR image enhancement by fusing bilateral and weighted least squares filters. Journal of Imaging Science and Technology
  Academic article

2016

• George, Sony; Hardeberg, Jon Yngve. (2016) Estimation and Correction of Geometric Distortion in Pushbroom Hyperspectral System for Imaging Art Paintings. IS&T International Symposium on Electronic Imaging Science and Technology
  Academic article

2015

• George, Sony; Hardeberg, Jon Yngve. (2015) Ink classification and visualisation of historical manuscripts: Application of hyper spectral imaging. IEEE (Institute of Electrical and Electronics Engineers)
  Academic chapter/article/Conference paper
• Ciortan, Irina Mihaela; Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve. (2015) Color and Hyperspectral Image Segmentation for Historical Documents. IEEE conference proceedings
  Academic chapter/article/Conference paper
• George, Sony; Ciortan, Irina Mihaela; Hardeberg, Jon Yngve. (2015) Evaluation of Hyperspectral Imaging Systems for Cultural Heritage Applications Based on a Round Robin Test . The International Colour Association
  Academic chapter/article/Conference paper
• Hardeberg, Jon Yngve; George, Sony; Deger, Ferdinand; Baarstad, Ivar; Palacios, Julio Ernesto Hernandez. (2015) Spectral Scream: hyperspectral image acquisition and analysis of a masterpiece. Archetype Publications Ltd.
  Academic chapter/article/Conference paper
• Le Moan, Steven; George, Sony; Pedersen, Marius; Blahova, Jana; Hardeberg, Jon Yngve. (2015) A database for spectral image quality. SPIE - The International Society for Optics and Photonics
  Academic chapter/article/Conference paper

2014

• George, Sony; Grecicosei, Ana Maria; Waaler, Erik; Hardeberg, Jon Yngve. (2014) Spectral Image Analysis and Visualisation of the Khirbet Qeiyafa Ostracon. Springer
  Academic chapter/article/Conference paper
• Deborah, Hilda; George, Sony; Hardeberg, Jon Yngve. (2014) Pigment Mapping of the Scream (1893) Based on Hyperspectral Imaging. Springer
  Academic chapter/article/Conference paper
• Shrestha, Raju; Pillay, Ruven; George, Sony; Hardeberg, Jon Yngve. (2014) Quality evaluation in spectral imaging – Quality factors and metrics. Journal of the International Colour Association
  Academic article

2010

• George, Sony; Hardeberg, Jon Yngve; George, Tomson G.; Nampoori, V. P. N.. (2010) Automatic Redeye Correction Algorithm with Multilevel Eye Confirmation. Journal of Imaging Science And Technology
  Academic article