| Schlick, C. (1994). A Survey of Shading and Reflectance Models. Computer Graphics Forum 13 (2), 121-- 131, 1994. |
.... with changing viewing or illumination geometry has been clearly recognized, for remote sensing applications by (Kimes 1983) Roujean et al. 1992) Rahman et al. 1993) Wanner et al. 1997) Strahler 1997) Diner et al. 1999) as well as for computer vision (Nayar et al. 1991) (Schlick 1994) , Oren Nayar 1995) Wolff 1996) We will use the Bidirectional Reflectance Distribution Function BRDF as defined by (Nicodemus 1970) to describe the directional reflectance properties. Smooth surfaces can be considered specular, i.e. the incident light is reflected into one direction only. ....
.... Suttles 1986) Li et al. 1996) Gibbs et al. 1993) Deering et al. 1990) There have been studies determining the BRDF of man made surfaces for sizes about 10 cm 10 cm (Torrance Sparrow 1967) Oren Nayar 1995) Wolff 1996) Ginneken et al. 1998) Stavridi et al. 1997) (Schlick 1994) , Dana et al. 1999) Meister et al. 1996) Meister et al. 1999c) But the bidirectional reflectance of urban areas has not been investigated before for data with a pixel diameter of about 1 km. In fact, there are several problems associated with the design of an urban BRDF model on this ....
Schlick, C. (1994). A Survey of Shading and Reflectance Models. Computer Graphics Forum 13 (2), 121-- 131, 1994.
....It may be empirical and simple, representing only a limited set of brdfs as in the classical radiosity method which assumes that all surfaces are Lambertian (i.e. perfectly diffuse) The model may also be more elaborate and flexible, allowing for specular and glossy reflections, anisotropy, etc. [2, 3, 4, 5, 6]. It should of course be physically plausible. If not, algorithms that use it may not converge to a correct solution or not converge at all. 2.2 Desired practical properties Monte Carlo algorithms for physically based rendering typically impose the following requirements on the reflectance ....
C. Schlick, "A survey of shading and reflectance models," Computer Graphics Forum, vol. 13, pp. 121--131, June 1994.
Online articles have much greater impact More about CiteSeer.IST Add search form to your site Submit documents Feedback
CiteSeer.IST - Copyright Penn State and NEC