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• W3048483554 abstract "This work concerns the computation and approximation of developable surfaces --- surfaces that are locally isometric to the two-dimensional plane. These surfaces are heavily studied in differential geometry, and are also of great interest to fabrication, architecture and fashion. We focus specifically on developability of heightfields. Our main observation is that developability can be cast as a rank constraint, which can then be plugged into theoretically-grounded rank-minimization techniques from the field of compressed sensing. This leads to a convex semidefinite optimization problem, which receives an input heightfield and recovers a similar heightfield which is developable. Due to the sparsifying nature of compressed sensing, the recovered surface is piecewise developable, with creases emerging between connected developable pieces. The convex program includes one user-specified parameter, balancing adherence to the original surface with developability and number of patches. We moreover show, that in contrast to previous techniques, our discretization does not introduce a bias and the same results are achieved across resolutions and orientations, and with no limit on the number of creases and patches. We solve this convex semidefinite optimization problem efficiently, by devising a tailor-made ADMM solver which leverages matrix-projection observations unique to our problem. We employ our method on a plethora of experiments, from denoising 3D scans of developable geometry such as documents and buildings, through approximating general heightfields with developable ones, and up to interpolating sparse annotations with a developable heightfield." @default.
• W3048483554 created "2020-08-18" @default.
• W3048483554 creator A5012021206 @default.
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• W3048483554 date "2020-08-12" @default.
• W3048483554 modified "2023-09-27" @default.
• W3048483554 title "Developability of heightfields via rank minimization" @default.
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• W3048483554 doi "https://doi.org/10.1145/3386569.3392419" @default.
• W3048483554 hasPublicationYear "2020" @default.
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