Geometric Accuracy Analysis of Stationary BTF Gonioreflectometers

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dc.contributor.authorHavran, V.en_US
dc.contributor.editorReinhard Klein and Holly Rushmeieren_US
dc.date.accessioned2015-07-31T07:40:44Z
dc.date.available2015-07-31T07:40:44Z
dc.date.issued2015en_US
dc.description.abstractThe accurate BTF data representation requires specialized measurement gantries, some of them designed as gonireflectometers. These consist of an illumination source and a camera mounted on two robotic arms, one degree of freedom possibly achieved by rotation stage which a measured sample is mounted on. While there are several variations of the gonioreflectometer gantry, the principle of all remains the same, positioning directly the illumination and detector on a hemispherical surface over a sample. We analyze the positioning error of such gonioreflectometers. The input parameters are the required spatial resolution of a BTF sample and the distance between the camera used as a detector and the BTF sample. Our analysis confirms that the requirements for mechatronic actuators for the positioning of the sample and arms are very high and near the limit of state of the art technology.en_US
dc.description.sectionheadersPapersen_US
dc.description.seriesinformationWorkshop on Material Appearance Modelingen_US
dc.identifier.doi10.2312/mam.20151200en_US
dc.identifier.isbn978-3-905674-83-5en_US
dc.identifier.issn2309-5059en_US
dc.identifier.pages25-29en_US
dc.identifier.urihttps://doi.org/10.2312/mam.20151200en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThree Dimensional Graphics and Realismen_US
dc.subjectColoren_US
dc.subjectshadingen_US
dc.subjectshadowingen_US
dc.subjectand textureen_US
dc.subjectI.4.1 [Image Processing and Computer Vision]en_US
dc.subjectDigitization and Image Captureen_US
dc.subjectReflectanceen_US
dc.titleGeometric Accuracy Analysis of Stationary BTF Gonioreflectometersen_US
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MAM2015: Eurographics Workshop on Material Appearance Modeling: Issues and Acquisition