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- W3016490563 abstract "Recovering the shape and reflectance of non-Lambertian surfaces remains a challenging problem in computer vision since the view-dependent appearance invalidates traditional photo-consistency constraint. In this paper, we introduce a novel concentric multi-spectral light field (CMSLF) design that is able to recover the shape and reflectance of surfaces of various materials in one shot. Our CMSLF system consists of an array of cameras arranged on concentric circles where each ring captures a specific spectrum. Coupled with a multi-spectral ring light, we are able to sample viewpoint and lighting variations in a single shot via spectral multiplexing. We further show that our concentric camera and light source setting results in a unique single-peak pattern in specularity variations across viewpoints. This property enables robust depth estimation for specular points. To estimate depth and multi-spectral reflectance map, we formulate a physics-based reflectance model for the CMSLF under the surface camera (S-Cam) representation. Extensive synthetic and real experiments show that our method outperforms the state-of-the-art shape reconstruction methods, especially for non-Lambertian surfaces." @default.
- W3016490563 created "2020-04-24" @default.
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- W3016490563 date "2020-07-01" @default.
- W3016490563 modified "2023-10-16" @default.
- W3016490563 title "Shape and Reflectance Reconstruction Using Concentric Multi-Spectral Light Field" @default.
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- W3016490563 doi "https://doi.org/10.1109/tpami.2020.2986764" @default.
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