On the Advancement of BTF Measurement on Site

Havran, Vlastimil; Hosek, Jan; Nemcova, Sarka; Cap, Jiri

On the Advancement of BTF Measurement on Site

Files

005-009.pdf (19.57 MB)

Date

2018

Authors

Havran, Vlastimil
Hosek, Jan
Nemcova, Sarka
Cap, Jiri

Publisher

The Eurographics Association

Abstract

We present our progress to the on-site measurement of the spatially varying surface reflectance represented by bidirectional texture function (BTF). This requires a physical realization of a portable instrument that can be brought to the sample, outside the laboratory. We discuss our motivation, the main issues, and challenges for making such an instrument possible. We focus on the design of the mechanical parts that are required for an easy manipulation of the device on site and describe our experiences with the instrument in practice. The design uses a miniaturized rotary light stage. It allows for measurement of HDR images with the acquisition rate of 1000 HDR images per minute, where one HDR image consists of 4 individual exposures.

        @inproceedings{10.2312:mam.20181191
,
booktitle = {Workshop on Material Appearance Modeling
},
editor = {Reinhard Klein and Holly Rushmeier
},
title = {{On the Advancement of BTF Measurement on Site
}},
author = {Havran, Vlastimil and 
Hosek, Jan and 
Nemcova, Sarka and 
Cap, Jiri
},
year = {2018
},
publisher = {The Eurographics Association
},
ISSN = {2309-5059
},
ISBN = {978-3-03868-055-0
},
DOI = {10.2312/mam.20181191
}
}