We developed a method to estimate the
reflection parameters of the object surface such as
object color and surface roughness by decomposing the
specular reflection component and the diffuse reflection
component by using the polarizer.
Object
shape is obtained by laser range sensor. We separate the
specular reflection component image and the diffuse
reflection component image by using the polarizer set in
front of the light source and the camera. Diffuse
reflection is represented by Lambertian reflection model,
and specular reflection is represented by
Torrance-Sparrow reflection model. We estimate the albedo
of the object surface from shape data, light source
direciton, and the diffuse reflection component image.
Also, we estimate the reflection parameters of
Torrance-Sparrow reflection model from shape data, light
source direction, and the specular reflection component
image. Rendered image with estimated parameters is
almost same to the real image. |
