抄録
In this paper, directional characteristics of reflection from the surface of materials are measured by means of the goniophotometory using polarized light. Each directional characteristics is separated into boundary reflected component and layer reflected one. The measurement is carried out within the incident plane and the other directions. Results of measurement can be used to predict illuminance and luminance caused by interreflection between the non-uniform diffuse surfaces and to estimate the visual environment mainly the appearance of the object.