SEPARATING DIFFUSE AND SPECULAR COMPONENTS OF A GLOSSY OBJECT FOR SHAPE RECONSTRUCTION USING ELECTRONIC LIGHT DIFFUSING LAYERS (E-GLASS) AND POLARIZED LIGHT

摘要

3D shape reconstruction of glossy objects includes separation of diffuse and specular components of reflection from the object. Multiple layers of E-glass arranged in spaced-apart relation with each other, together with a camera for capturing images of reflected light. A first polarizer is positioned to polarize incident light before it reaches the object and a second polarizer is configured as an analyzer to analyze the light reflected from the object. The degree of polarization is varied. Images are captured of a structured light pattern as reflected in both diffuse and specular reflection the surface of the glossy object. A diffuse component of reflection is extracted by using the captured images of the deformed patterns, and a specular component of reflection is extracted by using the diffuse component of reflection and the captured images under polarized illumination. Depth of the surface of the object is estimated by fusing the diffuse component and the specular component.