Open AccessMobile surface reflectometry
Author(s) -
Jérémy Rivière,
Pieter Peers,
Abhijeet Ghosh
Publication year - 2014
Publication title -
spiral (imperial college london)
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1145/2614217.2630589
Subject(s) - specular reflection , bidirectional reflectance distribution function , reflectometry , mobile device , diffuse reflection , computer science , planar , optics , flash (photography) , materials science , reflectivity , computer vision , computer graphics (images) , physics , time domain , operating system
We present two approaches for acquiring spatially varying reflectance of planar samples using a mobile device. For samples with rough specular BRDF, we propose to employ the back camera and flash pair on any typical mobile device for freeform handheld reflectance acquisition using dense backscattering measurements under flash illumination. For samples with highly specular BRDF, we instead employ a 10" tablet for illuminating the sample with extended illumination while employing the front camera for reflectance acquisition. With this setup, we also exploit the tablet's LCD screen polarization for diffuse-specular separation.
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