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• W2401687958 abstract "Image-based reconstruction of 3D shapes is inherently biased under the occurrence of interreflections, since the observed intensity at surface concavities consists of direct and global illumination components. This issue is commonly not considered in a Photometric Stereo (PS) framework. Under the usual assumption of only direct reflections, this corrupts the normal estimation process in concave regions and thus leads to inaccurate results. For this reason, global illumination effects need to be considered for the correct reconstruction of surfaces affected by interreflections. While there is ongoing research in the field of inverse lighting (i.e. separation of global and direct illumination components), the interreflection aspect remains oftentimes neglected in the field of 3D shape reconstruction. In this study, we present a computationally driven approach for iteratively solving that problem. Initially, we introduce a photometric stereo approach that roughly reconstructs a surface with at first unknown reflectance properties. Then, we show that the initial surface reconstruction result can be refined iteratively regarding non-distant light sources and, especially, interreflections. The benefit for the reconstruction accuracy is evaluated on real Lambertian surfaces using laser range scanner data as ground truth." @default.
• W2401687958 created "2016-06-24" @default.
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• W2401687958 date "2013-01-01" @default.
• W2401687958 modified "2023-10-01" @default.
• W2401687958 title "3D Reconstruction of Interreflection-affected Surface Concavities using Photometric Stereo" @default.
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• W2401687958 doi "https://doi.org/10.5220/0004213702080214" @default.
• W2401687958 hasPublicationYear "2013" @default.
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