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Effects of light map orientation and shape on the visual perception of canonical materials

hal.structure.identifierPerceptual Intelligence Lab [Delft] [π–Lab]
dc.contributor.authorZHANG, Fan
hal.structure.identifierPerceptual Intelligence Lab [Delft] [π–Lab]
dc.contributor.authorDE RIDDER, Huib
hal.structure.identifierMelting the frontiers between Light, Shape and Matter [MANAO]
dc.contributor.authorBARLA, Pascal
hal.structure.identifierPerceptual Intelligence Lab [Delft] [π–Lab]
dc.contributor.authorPONT, Sylvia
dc.date.accessioned2023-05-12T10:41:26Z
dc.date.available2023-05-12T10:41:26Z
dc.date.issued2020-04-09
dc.identifier.issn1534-7362
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181620
dc.description.abstractEnWe previously presented a systematic optics-based canonical approach to test material-lighting interactions in their full natural ecology, combining canonical material and lighting modes. Analyzing the power of the spherical harmonics components of the lighting allowed us to predict the lighting effects on material perception for generic natural illumination environments. To further understand how material properties can be brought out or communicated visually, in the current study, we tested whether and how light map orientation and shape affect these interactions in a rating experiment: For combinations of four materials, three shapes, and three light maps, we rotated the light maps in 15 different configurations. For the velvety objects, there were main and interaction effects of lighting and light map orientation. The velvety ratings decreased when the main light source was coming from the back of the objects. For the specular objects, there were main and interaction effects of lighting and shape. The specular ratings increased when the environment in the specular reflections was clearly visible in the stimuli. For the glittery objects, there were main and interaction effects of shape and light map orientation. The glittery ratings correlated with the coverage of the glitter reflections as the shape and light map orientation varied. For the matte objects, results were robust across all conditions. Last, we propose combining the canonical modes approach with so-called importance maps to analyze the appearance features of the proximal stimulus, the image, in contradistinction to the physical parameters as an approach for optimization of material communication.
dc.language.isoen
dc.publisherAssociation for Research in Vision and Ophthalmology
dc.title.enEffects of light map orientation and shape on the visual perception of canonical materials
dc.typeArticle de revue
dc.identifier.doi10.1167/jov.20.4.13
dc.subject.halSciences cognitives/Psychologie
bordeaux.journalJournal of Vision
bordeaux.page13
bordeaux.volume20
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.issue4
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-02559212
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02559212v1
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