Gael Obein

Professeur au Conservatoire National des Arts et Métiers Directeur du LNE-Cnam (EA2367), laboratoire national de métrologie en charge de la réalisation, du maintien et de la dissémination des références nationales de longueur, masse et grandeurs associées, température, radiométrie et photométrie. Je suis également secrétaire de la Division 2 de la CIE et président de l'Association Française de l’Éclairage (AFE)
31
Documents

Domaines de recherche

Sciences de l'ingénieur [physics]

Compétences

Photométrie Mesure de l'apparence BRDF - BTDF - BSSRDF

Publications

Publications

Comptes-rendus de la conférence annuelle CIE France 2025

Christophe Martinsons , Laurent Canale , Vincent Boucher , Jiaye Li , Lou Gevaux et al.

Conférence annuelle CIE FRANCE 2025, Feb 2025, Paris, France. Association Française de l'Eclairage, 2025

Proceedings/Recueil des communications hal-04963460v1

Comptes-rendus de la conférence annuelle CIE France 2024

Christophe Martinsons , Michèle Atié , Sophie Jost , Lou Gevaux , Gaël Obein et al.

Conférence annuelle CIE FRANCE 2024, Jan 2024, Paris, France. Association Française de l'Eclairage, 2024

Proceedings/Recueil des communications hal-04954716v1

Evidence for the need to update the definition of the BRDF - spectral considerations

Pierre Chavel , Thomas Labardens , Mathieu Hébert , Lionel Simonot , Yvan R. P. Sortais et al.

Fifteenth International Conference on Correlation Optics, SPIE proceedings, 12126, pp.121261T, 2022, ⟨10.1117/12.2616107⟩

Proceedings/Recueil des communications hal-03620312v1
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Study and simulations of speckle effects on BRDF measurements at very high angular resolution

Thomas Labardens , Pierre Chavel , Yvan R. P. Sortais , Mathieu Hébert , Lionel Simonot et al.

IS&T Electronic Imaging Symposium, Material Appearance Conference, Society for Imaging Science and Technology, pp.140.1-140.7, 2021, ⟨10.2352/ISSN.2470-1173.2021.5.MAAP-140⟩

Proceedings/Recueil des communications hal-03180579v1
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Development and comparison of primary facilities for traceable BSSRDF measurements

Pablo Santafé-Gabarda , Lou Gevaux , Alejandro Ferrero , Tommaso Fontanot , Jan Audenaert et al.

Journal of Optics, 2024, 26 (3), pp.035601. ⟨10.1088/2040-8986/ad21df⟩

Article dans une revue hal-04687199v1
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Reconsidering the spectral distribution of light: Do people perceive watts or photons?

C Martinsons , F Behar-Cohen , T Bergen , P Blattner , M Herf et al.

Lighting Research & Technology, 2024, ⟨10.1177/14771535241246060⟩

Article dans une revue hal-04569647v1
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Optical and Electromechanical Design and Implementation of an Advanced Multispectral Device to Capture Material Appearance

Majid Ansari-Asl , Markus Barbieri , Gaël Obein , Jon Yngve Hardeberg

Journal of Imaging, 2024, 10 (3), pp.55. ⟨10.3390/jimaging10030055⟩

Article dans une revue hal-05335558v1
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Survey of bidirectional transmittance distribution function measurement facilities by multilateral scale comparisons

Jinglin Fu , Alejandro Ferrero , Tatjana Quast , Michael Esslinger , Pablo Santafé-Gabarda et al.

Metrologia, 2024, 61 (3), pp.035006. ⟨10.1088/1681-7575/ad3fbd⟩

Article dans une revue hal-04687204v1
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Bidirectional reflectance measurements over a micrometric surface area using a goniospectrophotometer

Dipanjana Saha , Lou Gevaux , Jeppe Revall Frisvad , Gael Obein

Review of Scientific Instruments, 2024, 95 (5), ⟨10.1063/5.0193490⟩

Article dans une revue hal-04687179v1
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Impact of light polarization on angle-resolved light scattering from gloss scale

I Gozhyk , Colette Turbil , E Garcia , G Obein

Physica Scripta, 2023, 98 (9), pp.095503. ⟨10.1088/1402-4896/ace99b⟩

Article dans une revue hal-04589949v1
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Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review

Alix Lafitte , Romain Sordello , Marc Legrand , Virginie Nicolas , Gaël Obein et al.

Nature Conservation, 2023, 54, pp.149-177. ⟨10.3897/natureconservation.54.102614⟩

Article dans une revue hal-04337333v1

Final report on the CCPR Key Comparison CCPR-K3.2014 Luminous Intensity

Arnold Gaertner , Éric Côté , Joaquin Campos , Gaël Obein , Peter Blattner et al.

Metrologia, 2022, 59 (1A), pp.02002. ⟨10.1088/0026-1394/59/1A/02002⟩

Article dans une revue hal-03866749v1

New traceability chain for spectral irradiance measurement at LNE-Cnam

Mai Huong Valin , Gaël Obein , Bernard Rougie , Thierry Valin , Daniel Truong et al.

Measurement Science and Technology, 2022, 33 (6), pp.064004. ⟨10.1088/1361-6501/ac50e6⟩

Article dans une revue hal-04303005v1
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A flashing light may not be that flashy: A systematic review on critical fusion frequencies

Alix Lafitte , Romain Sordello , Marc Legrand , Virginie Nicolas , Gaël Obein et al.

PLoS ONE, 2022, 17 (12), pp.e0279718. ⟨10.1371/journal.pone.0279718⟩

Article dans une revue (article de synthèse) hal-04050147v1
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Advocating a statistical definition for the BRDF

Pierre Chavel , Yvan R. P. Sortais , Thomas Labardens , Lionel Simonot , M Hébert et al.

Journal of Physics: Conference Series, 2022, 2149 (1), pp.012013. ⟨10.1088/1742-6596/2149/1/012013⟩

Article dans une revue hal-03620283v2
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Assessing gloss under diffuse and specular lighting

Guillaume Ged , Ana‐maria Rabal‐almazor , Marc Himbert , Gael Obein

Color Research and Application, 2020, 45 (4), pp.591 - 602. ⟨10.1002/col.22510⟩

Article dans une revue hal-03602498v1
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Modeling, measuring, and using BRDFs: significant French contributions

Lionel Simonot , Gaël Obein , Benjamin Bringier , Daniel Meneveaux

Journal of the Optical Society of America. A Optics, Image Science, and Vision, 2019, 36 (11), pp.C40-C50. ⟨10.1364/JOSAA.36.000C40⟩

Article dans une revue hal-02361574v1
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Seaweed-eating sheep and the adaptation of husbandry in Neolithic Orkney: new insights from Skara Brae

Marie Balasse , Anne Tresset , Gaël Obein , Denis Fiorillo , Henri Gandois

Antiquity, 2019, 93 (370), pp.919-932. ⟨10.15184/aqy.2019.95⟩

Article dans une revue hal-02304703v1

Bilateral comparison of luminous flux using lamps as transfer standards (EURAMET.PR-K4.2)

J Dubard , Gaël Obein , D Suryani

Metrologia, 2019, 56 (1A), pp.02001. ⟨10.1088/0026-1394/56/1A/02001⟩

Article dans une revue hal-03602660v1

Luminous intensity bilateral comparison using lamps as transfer standards between LNE (France) and INM-RO (Roumania)

Gaël Obein , M Simionescu , J Dubard , A Seucan , Jean Bastie

Metrologia, 2017, 54 (1A), pp.02002. ⟨10.1088/0026-1394/54/1A/02002⟩

Article dans une revue hal-03602690v1
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ACT: A leaf BRDF model taking into account the azimuthal anisotropy of monocotyledonous leaf surface

Alexis Comar , Frédéric Baret , Gaël Obein , Lionel Simonot , Daniel Meneveaux et al.

Remote Sensing of Environment, 2014, 143, pp.112 - 121. ⟨10.1016/j.rse.2013.12.006⟩

Article dans une revue hal-01565504v1
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Investigating seasonality and season of birth in past herds: A reference set of sheep enamel stable oxygen isotope ratios

Marie Balasse , Gaël Obein , Joël Ughetto-Monfrin , Ingrid Mainland

Archaeometry, 2012, 54 (2), pp.349-368. ⟨10.1111/j.1475-4754.2011.00624.x⟩

Article dans une revue hal-00744957v2
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Recognizing real materials from their glossy appearance

Guillaume Ged , Gaël Obein , Zaccaria Silvestri , Jean Le Rohellec , F. Vienot

Journal of Vision, 2010, 10 (9), pp.18-18. ⟨10.1167/10.9.18⟩

Article dans une revue hal-03868865v1
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Difference scaling of gloss: nonlinearity, binocularity, and constancy.

Gaël Obein , Kenneth Knoblauch , Françoise Viénot

Journal of Vision, 2004, 4 (9), pp.711-20. ⟨10.1167/4.9.4⟩

Article dans une revue inserm-00131795v1
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Development of a µBRDF goniospectrophotometer for BRDF measurement on tiny surfaces

D. Saha , L. Gevaux , T. Cances , A. Richard , G. Obein

CIE 2021 Midterm Conference, CIE, Sep 2021, Online, Malaysia. pp.327-334, ⟨10.25039/x48.2021.OP42⟩

Communication dans un congrès hal-03864783v1

Speckle in BRDF measurements: solid angle considerations

Pierre Chavel , Thomas Labardens , Lionel Simonot , Mathieu Hébert , Yvan R. P. Sortais et al.

2021 Frontiers in Optics + Laser Science Science conference (FiO+LS 2021), Nov 2021, Washington, United States. pp.JTh5A.76, ⟨10.1364/FIO.2021.JTh5A.76⟩

Communication dans un congrès hal-04563953v1
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Predicting changes in visual appearance of periodic surface from brdf measurements

C. Turbil , I. Gozhyk , J. Teisseire , I. Simonsen , Guillaume Ged et al.

4th CIE Expert Symposium on Colour and Visual Appearance, Sep 2016, Prague, Czech Republic. pp.103-110

Communication dans un congrès hal-01481140v1
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Visual experiment on LED lighting quality with color quality scale colored samples

Nicolas Pousset , Gaël Obein , Annick Razet

CIE 2010 : Lighting Quality and Energy Efficiency, Mar 2010, Vienne, Austria. pp.722-729

Communication dans un congrès hal-00472329v1
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Métrologie des diodes électroluminescentes

Nicolas Pousset , Annick Razet , Gaël Obein , Arnaud Richard , Jean Bastie

13ème Congrès international de métrologie, Collège français de métrologie, Jun 2007, Lille, France

Communication dans un congrès hal-00454119v1
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A new method for measuring the spectral irradiance at LNE-Cnam

Mai Huong Valin , Gaël Obein

20è Congrès Internationale de Métrologie CIM2021, Sep 2021, Lyon, France. 2021

Poster de conférence hal-04303203v1

Peut-on mesurer la BRDF ?

Lionel Simonot , Pierre Chavel , Mathieu Hebert , Gaël Obein

Quand la matière diffuse la lumière, Les Presses des Mines, pp.209-218, 2019, 9782356715562

Chapitre d'ouvrage hal-03980829v1