Blar i NTNU Open på forfatter "Thomas, Jean-Baptiste Denis"
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But aren’t all soaps metal soaps? A review of applications, physico-chemical properties of metal soaps and their occurrence in cultural heritage studies
Russo, Silvia; Brambilla, Laura; Thomas, Jean-Baptiste Denis; Joseph, Edith (Peer reviewed; Journal article, 2023)Metal soaps, the organic salts resulting from the interaction of fatty acids and metal cations, arouse interest in the scientific field because of their versatility in a great range of chemical applications as well as ... -
Camera Response Function Assessment in Multispectral HDR Imaging
Ansariasl, Majid; Thomas, Jean-Baptiste Denis; Hardeberg, Jon Yngve (Peer reviewed; Journal article, 2022)Recently, spatially varying Bidirectional Reflectance Distribution Functions (svBRDF) is widely used as a model to characterize the appearance of materials with varying visual properties over the surface. One of the ... -
The Effect of Peripheral Contrast Sensitivity Functions on the Performance of the Foveated Wavelet Image Quality Index
Bozorgian, Aliakbar; Pedersen, Marius; Thomas, Jean-Baptiste Denis (Peer reviewed; Journal article, 2022)The Contrast Sensitivity Function (CSF) is an integral part of objective foveated image/video quality assessment metrics. In this paper, we investigate the effect of a new eccentricity-dependent CSF model on the performance ... -
Exploring Imaging Methods for In Situ Measurements of the Visual Appearance of Snow
Nguyen, Mathieu; Thomas, Jean-Baptiste Denis; Farup, Ivar (Peer reviewed; Journal article, 2024)We explored imaging methods to perform in situ field measurements of physical correlates of the visual appearance of snow. Measurements were performed at three locations in Norway between February and March 2023. We used ... -
Image-based Estimation of Physical Correlates of the Visual Appearance of Snow
Nguyen, Mathieu (Doctoral theses at NTNU;2024:69, Doctoral thesis, 2024)The most common representation of snow is to describe it as a white and cold powder material that is usually found in winter or specific areas of the world. It can also be associated with the Christmas festivities, winter ... -
Impact of Exposure and Illumination on Texture Classification Based on Raw Spectral Filter Array Images
Elezabi, Omar; Guesney-Bodet, Sebastien; Thomas, Jean-Baptiste Denis (Peer reviewed; Journal article, 2023)Spectral Filter Array cameras provide a fast and portable solution for spectral imaging. Texture classification from images captured with such a camera usually happens after a demosaicing process, which makes the classification ... -
Impact of training data on LMMSE demosaicing for Colour-Polarization Filter Array
Dumoulin, Ronan; Lapray, Pierre-Jean; Thomas, Jean-Baptiste Denis; Farup, Ivar (Chapter, 2023)Linear minimum mean square error can be used to demosaic images from a colour-polarization filter array sensor. However, the role of training data on its performance is yet an open question. We study the model selection ... -
Logistic splicing correction for VNIR–SWIR reflectance imaging spectroscopy
Grillini, Federico; Thomas, Jean-Baptiste Denis; George, Sony (Peer reviewed; Journal article, 2023)In the field of spectroscopy, a splicing correction is a process by which two spectra captured with different sensors in adjacent or overlapping electromagnetic spectrum ranges are smoothly connected. In our study, we ... -
Measuring the Optical Properties of Highly Diffuse Materials
Nguyen, Mathieu; Thomas, Jean-Baptiste Denis; Farup, Ivar (Peer reviewed; Journal article, 2023)Measuring the optical properties of highly diffuse materials is a challenge as it could be related to the white colour or an oversaturation of pixels in the acquisition system. We used a spatially resolved method and adapted ... -
Standard representation space for spectral imaging
Thomas, Jean-Baptiste Denis; Lapray, Pierre-Jean; Derhak, Max; Farup, Ivar (Peer reviewed; Journal article, 2023)