Abstract
Typically, relief generation from an input 3D scene is limited to either bas-relief or high-relief modeling. This paper presents a novel unified scheme for synthesizing reliefs guided by the geometric texture richness of 3D scenes; it can generate both basand high-reliefs. The type of relief and compression coefficient can be specified according to the user’s artistic needs. We use an energy minimization function to obtain the surface reliefs, which contains a geometry preservation term and an edge constraint term. An edge relief measure determined by geometric texture richness and edge z-depth is utilized to achieve a balance between these two terms. During relief generation, the geometry preservation term keeps local surface detail in the original scenes, while the edge constraint term maintains regions of the original models with rich geometric texture. Elsewhere, in highreliefs, the edge constraint term also preserves depth discontinuities in the higher parts of the original scenes. The energy function can be discretized to obtain a sparse linear system. The reliefs are obtained by solving it by an iterative process. Finally, we apply non-linear compression to the relief to meet the user’s artistic needs. Experimental results show the method’s effectiveness for generating both bas- and high-reliefs for complex 3D scenes in a unified manner.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China under Grant No. 61272309. The 3D models are courtesy of the Aim@Shape and Archive3d.
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Yongwei Miao received his Ph.D. degree in computer graphics from the State Key Lab. of CAD & CG at Zhejiang University in March 2007. From February 2008 to February 2009, he worked as a visiting scholar in the University of Zürich, Switzerland. From November 2011 to May 2012, he worked as a visiting scholar in the University of Maryland, USA. From July 2015 to August 2015, he worked as a visiting professor in the University of Tokyo, Japan. Dr. Miao is currently a professor in the College of Information Science and Technology, Zhejiang Sci-Tech University, China, and also a professor in the College of Computer Science and Technology, Zhejiang University of Technology, China. His research interests include computer graphics, digital geometry processing, visual media computing, 3D reconstruction, and computer vision.
Yuliang Sun is a Ph.D. student in the College of Computer Science and Technology, Zhejiang University of Technology, China. He received his master degree from the University of Manchester, UK, in 2011 and received his bachelor degree from Dalian University of Technology, China, in 2010. His research interests include computer graphics, computer vision, and digital geometry processing.
Xudong Fang received his master degree in software engineering from the College of Computer Science and Technology, Zhejiang University of Technology, China, in 2016. He received his bachelor degree from Zhejiang Chinese Medical University, China, in 2013. His research interests include computer graphics and digital geometry processing.
Jiazhou Chen is an associate professor in the College of Computer Science and Technology, Zhejiang University of Technology, China. Before that, he was a joint Ph.D. student between Bordeaux University, France, and Zhejiang University, China, obtaining a French doctoral diploma from Bordeaux University in July 2012, and also a Chinese doctoral diploma from Zhejiang University in December 2012. His research interests include computer graphics, image and video stylization, augmented reality, and visual media computing.
Xudong Zhang is a faculty member of the College of Computer Science and Technology, Zhejiang University of Technology, China. His research interests include computer graphics, visual media computing, and computer vision.
Renato Pajarola received his Dr.Sc.Techn. in computer science in 1998 from the Swiss Federal Institute of Technology (ETH) Zürich. After a postdoc in the Graphics, Visualization and Usability Center at Georgia Tech., he joined the University of California Irvine in 1999 as an assistant professor where he founded the Computer Graphics Lab. He is currently a professor in the Department of Informatics, University of Zürich, Switzerland. His research interests include real-time 3D graphics, scientific visualization, and interactive 3D multimedia.
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Miao, Y., Sun, Y., Fang, X. et al. Relief generation from 3D scenes guided by geometric texture richness. Comp. Visual Media 4, 209–221 (2018). https://doi.org/10.1007/s41095-018-0111-2
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DOI: https://doi.org/10.1007/s41095-018-0111-2