二つの点光源照射による物体表面の反射成分の重み付き分離法

概要

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Separating the diffuse and specular components from the reflection of a 3D object surface is very important for generating highly realistic synthesized images in computer graphics applications. Most research on this separation has only considered cases in which an object is illuminated by a single point light source. However, when an object is only illuminated by one source, acquiring the correct texture information of the visible regions on the object surface can be difficult or even impossible because of shading. To overcome this problem, we used two point light sources to illuminate the object to reduce the shaded regions. We used an iterative algorithm to estimate the intensity variation curve parameters and to compute the separation of the two components. To improve the separation quality, we used a weighting function to reduce the effect of noise contained in the highlight regions. Experiments using both synthesized and real data demonstrated that our method is effective and produces clear separation.
社団法人映像情報メディア学会の論文
2004-03-01