Experimental Validation of Analytical BRDF Models


Addy Ngan Fredo Durand Wojciech Matusik
Technical Sketch Siggraph 2004





The Bidirectional Reflectance Distribution Function (BRDF) describes the interaction of light with matter and is an important property for shading. A variety of analytical models have been proposed to represent BRDFs. However, validation of these models have been scarce due to the lack of high resolution measured data. Building upon a recent dataset of over a hundred BRDFs acquired at high resolution, we evaluate the performance of several popular BRDF models in terms of their ability to fit the measured data. While previous work in BRDF modeling have validated their models with some measurements, our work is the first to quantitatively compare different models based on one sizable dataset covering a wide class of materials. We believe this work can serve as a guide for practitioners in the field of appearance modeling to choose the right model that suits their needs.



Addy Ngan, Fredo Durand, and Wojciech Matusik. Experimental Validation of Analytical BRDF Models. Technical Sketch, Siggraph 2004.