One central problem in computer graphics is synthesizing realistic images that are
indistinguishable from real photographs. The basic theory behind rendering such images …

A method is described for estimating the refractive index of the material of an object surface
with convex shape in natural scenes. The refractive index is an optical constant that is …

This paper proposes a gonio-spectral imaging system for measuring light reflection on an
object surface by using two robot arms, a multi-band lighting system, and a monochrome …

This paper proposes a goniophotometric system for measuring light reflection on an object
surface using two commercial robot arms and a digital camera. It allows four degrees of …

The present paper describes a method for estimating the refraction index of the material of
an object surface with arbitrary convex shape in natural scenes. The refraction index cannot …

This paper reports estimation of surface spectral reflectance on three dimensional (3D)
painted objects using a gonio-spectral imaging system developed by the authors, which …