Adaptive Measurement of Anisotropic Material Appearance

Vávra, Radomir; Filip, Jiri

Adaptive Measurement of Anisotropic Material Appearance

Files

001-006.pdf (4.6 MB)

appendix.pdf (33.43 MB)

Date

2017

Authors

Vávra, Radomir
Filip, Jiri

Publisher

The Eurographics Association

Abstract

We present a practical adaptive method for acquisition of the anisotropic BRDF. It is based on a sparse adaptive measurement of the complete four-dimensional BRDF space by means of one-dimensional slices which form a sparse four-dimensional structure in the BRDF space and which can be measured by continuous movements of a light source and a sensor. Such a sampling approach is advantageous especially for gonioreflectometer-based measurement devices where the mechanical travel of a light source and a sensor creates a significant time constraint. In order to evaluate our method, we perform adaptive measurements of three materials and we simulate adaptive measurements of ten others. We achieve a four-times lower reconstruction error in comparison with the regular non-adaptive BRDF measurements given the same count of measured samples. Our method is almost twice better than a previous adaptive method, and it requires from two- to five-times less samples to achieve the same results as alternative approaches.

        @inproceedings{10.2312:pg.20171316
,
booktitle = {Pacific Graphics Short Papers
},
editor = {Jernej Barbic and Wen-Chieh Lin and Olga Sorkine-Hornung
},
title = {{Adaptive Measurement of Anisotropic Material Appearance
}},
author = {Vávra, Radomir and 
Filip, Jiri
},
year = {2017
},
publisher = {The Eurographics Association
},
ISBN = {978-3-03868-051-2
},
DOI = {10.2312/pg.20171316
}
}