Title
A Dictionary-based Approach for Estimating Shape and Spatially-Varying Reflectance.
Abstract
We present a technique for estimating the shape and reflectance of an object in terms of its surface normals and spatially-varying BRDF. We assume that multiple images of the object are obtained under fixed view-point and varying illumination, i.e, the setting of photometric stereo. Assuming that the BRDF at each pixel lies in the non-negative span of a known BRDF dictionary, we derive a per-pixel surface normal and BRDF estimation framework that requires neither iterative optimization techniques nor careful initialization, both of which are endemic to most state-of-the-art techniques. We showcase the performance of our technique on a wide range of simulated and real scenes where we outperform competing methods.
Year
DOI
Venue
2015
10.1109/ICCPHOT.2015.7168363
ICCP
Keywords
Field
DocType
Photometric stereo, BRDF estimation, Dictionaries, Spatially varying BRDF
Bidirectional reflectance distribution function,Computer vision,Computer science,Artificial intelligence,Pixel,Initialization,Reflectivity,Normal,Photometric stereo
Journal
Volume
ISSN
Citations 
abs/1503.04265
2164-9774
4
PageRank 
References 
Authors
0.40
23
2
Name
Order
Citations
PageRank
Hui Zhuo1344.94
Aswin C. Sankaranarayanan277051.51