A method is proposed for appearance reconstruction of 3D fluorescent objects including mutual illumination effect under different conditions of material and illumination. First, we acquire the spectral images of the scene of two fluorescent objects under different illumination directions. The observed images are decomposed into five components of diffuse reflection, diffuse interreflection, self-luminescence by direct illumination, self-luminescence by indirect illumination, and interreflection by fluorescent illumination. Each component is described by the multiplication of the spectral functions and the geometric factors. The surface shape information is estimated from the first geometric factor corresponding to diffuse reflection. Second, the reference geometric factors, independent of illumination direction, are estimated from the observed geometric factors and the surface normals. Third, a new appearance of the two fluorescent object scene is reconstructed under the fixed viewpoint but the arbitrary conditions of fluorescent material and illumination The spectral image is reproduced by the linear sum of combining the spectral functions and the predicted geometric factors. Finally, the feasibility of the proposed method is shown in experiments using different fluorescent materials and illumination condition.
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