This is a database of fifty hyperspectral images of indoor and outdoor scenes under daylight illumination, and an additional twenty-five images under artificial and mixed illumination. The images were captured using a commercial hyperspectral camera (Nuance FX, CRI Inc), and have thirty-one spectral samples at each pixel, corresponding to 10nm wavelength bands from 420-720nm.
The MERL BRDF database contains reflectance functions of 100 different materials.Each reflectance function is stored as a densely measured Bidirectional Reflectance Distribution Function (BRDF).
MERL provides this data only for research or academic use. Sample code to read the data is included with the database. Note that parameterization of theta-half has changed.
This document is supplemental to the paper titled Experimental Analysis of BRDF Models, published at Eurographics Symposium on Rendering 2005. In the following section we list the equations for the BRDF models employed in our isotropic analysis. The rest of the document contains complete fitting results for the 100 isotropic materials, together with BRDF plots in the incidence plane, and sample images.