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The bidirectional reflectance distribution function (BRDF) that describes an angle-resolved distribution of surface reflectance is available for characterizing surface properties of a material. A one-shot BRDF imaging system can capture an in-plane color mapping of light direction extracted from a surface BRDF distribution. A surface roughness identification method is then proposed here using the imaging system. A difference between surface properties of a matt paper and a glossy paper is experimentally shown to be detected using the method. A surface reconstruction method of an axisymmetric micro-object using the imaging system is also proposed here. The imaging system experimentally shows that it can reconstruct an axisymmetric aluminium cone surface with a height of 37 μm.

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“Round View Display (RVD)” achieves “Round View” perception by realizing the smooth expression of image rotation corresponding to the position of each member of the audience with super wide viewing angle and smooth motion parallax. By adding a specially designed slanted prism sheet after a lenticular lens, 90 deg. viewing angle is achieved.

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