Print Email Facebook Twitter Bas-Relief Modeling from Normal Layers Title Bas-Relief Modeling from Normal Layers Author Wei, Mingqiang (Nanjing University of Aeronautics and Astronautics) Tian, Yang (The Chinese University of Hong Kong; Chinese Academy of Sciences) Pang, Wai-Man (Caritas Institute of Higher Education) Wang, C.C. (TU Delft Materials and Manufacturing) Pang, Ming-Yong (Nanjing Normal University) Wang, Jun (Nanjing University of Aeronautics and Astronautics) Qin, Jin (The Hong Kong Polytechnic University) Heng, Pheng-Ann (The Chinese University of Hong Kong; Chinese Academy of Sciences) Date 2019 Abstract Bas-relief is characterized by its unique presentation of intrinsic shape properties and/or detailed appearance using materials raised up in different degrees above a background. However, many bas-relief modeling methods could not manipulate scene details well. We propose a simple and effective solution for two kinds of bas-relief modeling (i.e., structure-preserving and detail-preserving), which is different from the prior tone mapping alike methods. Our idea originates from an observation on typical 3D models which are decomposed into a piecewise smooth base layer and a detail layer in normal field. Proper manipulation of the two layers contributes to both structure-preserving and detail-preserving bas-relief modeling. We solve the modeling problem in a discrete geometry processing setup that uses normal-based mesh processing as a theoretical foundation. Specifically, using the two-step mesh smoothing mechanism as a bridge, we transfer the bas-relief modeling problem into a discrete space, and solve it in a least-squares manner. Experiments and comparisons to other methods show that (i) geometry details are better preserved in the scenario with high compression ratios, and (ii) structures are clearly preserved without shape distortion and interference from details. Subject Bas-relief modelingdetail-preservingdiscrete geometry processingnormal decompositionstructure-preserving To reference this document use: http://resolver.tudelft.nl/uuid:04cf8fe3-8d12-4925-94ea-2eb36f4776d0 DOI https://doi.org/10.1109/TVCG.2018.2818146 ISSN 1077-2626 Source IEEE Transactions on Visualization and Computer Graphics, 25 (4), 1651-1665 Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 Mingqiang Wei, Yang Tian, Wai-Man Pang, C.C. Wang, Ming-Yong Pang, Jun Wang, Jin Qin, Pheng-Ann Heng Files PDF TVCGBasRelief.pdf 1.93 MB Close viewer /islandora/object/uuid:04cf8fe3-8d12-4925-94ea-2eb36f4776d0/datastream/OBJ/view