Mathieu Hébert
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View article: Optimization of laser-induced printed colors for industrial applications
Optimization of laser-induced printed colors for industrial applications Open
Laser-induced printing is an affordable, fast, and non-contact method for creating high-resolution images. Using plasmonic nanocomposite thin films, it enables the printing of color images with visual effects. However, the color gamut of t…
View article: Roadmap on Optics and Photonics for Security and Encryption
Roadmap on Optics and Photonics for Security and Encryption Open
International audience
View article: Comparative analysis of optical and numerical models for reflectance and color prediction of monolithic dental resin composites with varying thicknesses
Comparative analysis of optical and numerical models for reflectance and color prediction of monolithic dental resin composites with varying thicknesses Open
Both optical and numerical models offer comparable color prediction accuracy, offering flexibility in model choice. These results help guide decision-making on prediction methods by clarifying their strengths and limitations.
View article: On the validity of two-flux and four-flux models for light scattering in translucent layers: angular distribution of internally reflected light at the interfaces
On the validity of two-flux and four-flux models for light scattering in translucent layers: angular distribution of internally reflected light at the interfaces Open
Optical characterization and appearance prediction of translucent materials are required in many fields of engineering such as computer graphics, dental restorations or 3D printing technologies. In the case of strongly scattering materials…
View article: An Explicit Estimated Baseline Model for Robust Estimation of Fluorophores Using Multiple-Wavelength Excitation Fluorescence Spectroscopy
An Explicit Estimated Baseline Model for Robust Estimation of Fluorophores Using Multiple-Wavelength Excitation Fluorescence Spectroscopy Open
Spectroscopy is a popular technique for identifying and quantifying fluorophores in fluorescent materials. However, quantifying the fluorophore of interest can be challenging when the material also contains other fluorophores (baseline), p…
View article: Performance of two-flux and four-flux models for predicting the spectral reflectance and transmittance factors of flowable dental resin composites
Performance of two-flux and four-flux models for predicting the spectral reflectance and transmittance factors of flowable dental resin composites Open
Eymard's four-flux model enables to predict the color of slices of dental materials within acceptable color differences. Eymard's four-flux model's optical parameters thus describe light-matter interactions in dental materials more accurat…
View article: Wide-field Gloss Scanner Designed to Assess Appearance and Condition of Modern Paintings
Wide-field Gloss Scanner Designed to Assess Appearance and Condition of Modern Paintings Open
International audience
View article: Color Change of Printed Surfaces Due to a Clear Coating with Matte Finishing
Color Change of Printed Surfaces Due to a Clear Coating with Matte Finishing Open
International audience
View article: Estimation of the fluorescence emission spectrum of dental composite resin samples of varying thickness
Estimation of the fluorescence emission spectrum of dental composite resin samples of varying thickness Open
International audience
View article: Towards quantitative multispectral excitation fluorescence spectroscopy for intraoperative assistance in glioma resection in neurosurgery
Towards quantitative multispectral excitation fluorescence spectroscopy for intraoperative assistance in glioma resection in neurosurgery Open
Glioma is the most common primary brain tumor and the most aggressive in terms of malignancy and progression. The primary treatment is surgery to completely remove the tumor. Currently, a problem persists in the accuracy of lesion delineat…
View article: Use of Multispectral Microscopy in the Prediction of Coated Halftone Reflectance
Use of Multispectral Microscopy in the Prediction of Coated Halftone Reflectance Open
When a print is coated with a transparent layer, such as a lamination film or a varnish layer, its color can be modified compared to the uncoated version due to multiple reflections between the layer-air interface and the inked substrate. …
View article: Predictions of the reflectance factor of translucent layered dental resin composites using two-flux models: assessing the importance of the interface reflectance parameter
Predictions of the reflectance factor of translucent layered dental resin composites using two-flux models: assessing the importance of the interface reflectance parameter Open
Two-flux models are practical tools for predicting the appearance of strongly scattering materials, but may fail to predict the spectral reflectance factor of translucent (i.e. weakly scattering) materials because of the simplifying as-sum…
View article: The Author
The Author Open
He is also head of program of a
View article: Instructive errors of Bouguer, Lambert, and Arago in the first determinations of angular reflectances on flat surfaces: discussion
Instructive errors of Bouguer, Lambert, and Arago in the first determinations of angular reflectances on flat surfaces: discussion Open
The first photometric measurements performed in the eighteenth century were based on brightness matching between two illuminated surfaces. In 1760, Bouguer and Lambert proposed the first methods to measure the angular reflectance of a flat…
View article: How does a clear layer modify the appearance of a halftone print?
How does a clear layer modify the appearance of a halftone print? Open
International audience
View article: Robust estimation of 5-ALA-induced PpIX multiple-wavelength excitation fluorescence spectroscopy for improving glioma classification
Robust estimation of 5-ALA-induced PpIX multiple-wavelength excitation fluorescence spectroscopy for improving glioma classification Open
International audience
View article: Light scattering in translucent layers: angular distribution and internal reflections at flat interfaces
Light scattering in translucent layers: angular distribution and internal reflections at flat interfaces Open
International audience
View article: Advocating a statistical definition for the BRDF
Advocating a statistical definition for the BRDF Open
This open access conference paper was published in the Juornal of Physics: Conference Series for the NEWRAD 2021 conference, see https://doi.org/10.1088/1742-6596/2149/1/012013.
View article: Advocating a statistical definition for the BRDF
Advocating a statistical definition for the BRDF Open
The definition of BRDF as a ratio of radiance to irradiance assumes that the geometrical optics framework applies, implicitly meaning that spatial coherence and diffraction of light have no significant effect in the reflection process. How…
View article: Multiple wavelength excitation 5-ALA induced PpIX fluorescence spectroscopy in guided neurosurgery for improving glioma classification
Multiple wavelength excitation 5-ALA induced PpIX fluorescence spectroscopy in guided neurosurgery for improving glioma classification Open
International audience
View article: Impact of a Transparent Coating on the Reflectance of a Line Halftone Pattern
Impact of a Transparent Coating on the Reflectance of a Line Halftone Pattern Open
Many prints are coated to increase their resistance or to enhance their appearance. Applying a smooth transparent layer on a print darkens and saturates its color, an easily observable effect which can be predicted in order to obtain bette…
View article: Anti‐Counterfeiting White Light Printed Image Multiplexing by Fast Nanosecond Laser Processing
Anti‐Counterfeiting White Light Printed Image Multiplexing by Fast Nanosecond Laser Processing Open
Passive plasmonic metasurfaces enable image multiplexing by displaying different images when altering the conditions of observation. Under white light, three‐image multiplexing with polarization‐selective switching has been recently demons…
View article: Study and simulations of speckle effects on BRDF measurements at very high angular resolution
Study and simulations of speckle effects on BRDF measurements at very high angular resolution Open
International audience
View article: Optimization of monochromatic primaries in RGB system: on the specific question of purples
Optimization of monochromatic primaries in RGB system: on the specific question of purples Open
International audience
View article: Why a clear coating modifies halftone color prints
Why a clear coating modifies halftone color prints Open
International audience
View article: Design of a Multimodal Light Sheet Optical System for Multivariate Applications in Phytopathology
Design of a Multimodal Light Sheet Optical System for Multivariate Applications in Phytopathology Open
The design of optical instruments is an active subject due to improvement in lens techniques, fabrication technology, and data handling capacity. Much remains to do to expand its application to phytopathology, which would be in particular …