By observing the polarization state of
the object from a single view, we estimated the 3D shape
of the object, reflection parameters of the object such
as reflectance and surface roughness, and also estimated
the illumination distribution.
Polarizer-mounted color CCD camera is the
measurement setup. First, from the color information of
the obtained image, we separate each images into specular
component image and diffuse component image. Then, we
calculate the polarization data from images taken under
different rotation angle of the polarizer. We estimate
the surface shape from the polarization data. By
detecting the intensity peak of specular component image,
we estimate the orientation of the directional light
sources. Finally, we estimate the reflection parameters
of diffuse and specular reflection, that is, diffuse
albedo, specular albedo, and surface roughness. |
