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- W2893425817 abstract "In this paper, we propose a novel depth restoration algorithm from RGB-D data through combining characteristics of local and non-local manifolds, which provide low-dimensional parameterizations of the local and non-local geometry of depth maps. Specifically, on the one hand, a local manifold model is defined to favor local neighboring relationship of pixels in depth, according to which, manifold regularization is introduced to promote smoothing along the manifold structure. On the other hand, the non-local characteristics of the patch-based manifold can be used to build highly data-adaptive orthogonal bases to extract elongated image patterns, accounting for self-similar structures in the manifold. We further define a manifold thresholding operator in 3D adaptive orthogonal spectral bases-eigenvectors of the discrete Laplacian of local and non-local manifolds-to retain only low graph frequencies for depth maps restoration. Finally, we propose a unified alternating direction method of multipliers optimization framework, which elegantly casts the adaptive manifold regularization and thresholding jointly to regularize the inverse problem of depth maps recovery. Experimental results demonstrate that our method achieves superior performance compared with the state-of-the-art works with respect to both objective and subjective quality evaluations." @default.
- W2893425817 created "2018-10-05" @default.
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- W2893425817 date "2019-03-01" @default.
- W2893425817 modified "2023-10-17" @default.
- W2893425817 title "Depth Restoration From RGB-D Data via Joint Adaptive Regularization and Thresholding on Manifolds" @default.
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- W2893425817 doi "https://doi.org/10.1109/tip.2018.2872175" @default.
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