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Volume: 33 | Article ID: art00005
Light Field Rendering for non-Lambertian Objects
  DOI :  10.2352/ISSN.2470-1173.2021.2.SDA-054  Published OnlineJanuary 2021

In this paper we propose a solution for view synthesis of scenes presenting highly non-Lambertian objects. While Image- Based Rendering methods can easily render diffuse materials given only their depth, non-Lambertian objects present non-linear displacements of their features, characterized by curved lines in epipolar plane images. Hence, we propose to replace the depth maps used for rendering new viewpoints by a more complex “non- Lambertian map” describing the light field?s behavior. In a 4D light field, diffuse features are linearly displaced following their disparity, but non-Lambertian feature can follow any trajectory and need to be approximated by non-Lambertian maps. We compute those maps from nine input images using Bezier or polynomial interpolation. After the map computation, a classical Image- Based Rendering method is applied to warp the input images to novel viewpoints.

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Sarah Fachada, Daniele Bonatto, Mehrdad Teratani, Gauthier Lafruit, "Light Field Rendering for non-Lambertian Objectsin Proc. IS&T Int’l. Symp. on Electronic Imaging: Stereoscopic Displays and Applications XXXII,  2021,  pp 54-1 - 54-8,

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