The Generalized Harvey-Shack (GHS) surface scatter theory claims to predict scatter from surfaces over a wide domain but has not been widely implemented or tested. The focus of this talk is to provide experimental validation of the GHS theory for the prediction of the BRDF from real surfaces. First, the GHS theory was implemented in software. Next, a BRDF measurement system was designed, built, and validated. Smooth, moderate, and rough surfaces were characterized via AFM as inputs to the GHS theory. The BRDF of each surface was measured and simulated. In nearly all cases, GHS simulations matched well with experimental results.
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