  We present a pipeline for modeling spatially varying BRDFs (svBRDFs) of
planar materials which only requires a mobile phone for data acquisition. With
a minimum of two photos under the ambient and point light source, our pipeline
produces svBRDF parameters, a normal map and a tangent map for the material
sample. The BRDF fitting is achieved via a pixel clustering strategy and an
optimization based scheme. Our method is light-weight, easy-to-use and capable
of producing high-quality BRDF textures.
