STAF: Database of Time-Varying Surface Appearance

About the Database

Traditional computer graphics rendering generally assumes that the appearance of surfaces remains static over time. Yet, there are a number of natural processes that cause surface appearance to vary dramatically, such as burning of wood, wetting and drying of rock and fabric, decay of fruit skins, or corrosion and rusting of steel and copper. To investigate time-varying surface appearance, we formulate this problem as TSV-BRDF (Time-and-Space-Varying BRDF),


and used a dome to acquire a database of 26 examples covering a range of phenomena, including burning, corrosion, drying on smooth and rough surfaces, and decay. The following image is a brief  overview:


Basically, there are 3 steps to acquire and process each example:

The release of this database thus includes the above 3 parts for each example: the raw measurement, the fitted BRDF parameters, and the STAF factorization results. Due to the space limitation, we can not release all the 1,280 raw measurements. Instead, we selected 1 view and 6 lighting directions (thus 6 measurement in total) for each example at each time step. More detailed information about the database can be found here.

The acquisition and the modeling details of our work can be referred to the following paper:

"Time-varying Surface Appearance: Acquisition, Modeling, and Rendering"
J. Gu, C. Tu, R. Ramamoorthi, P. Belhumeur, W. Matusik and S. K. Nayar,
ACM SIGGRAPH 2006. [PDF][Project Page]

STAF Database Home
Last modified: 08/28/2006