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- Title
Real-time Bas-Relief Generation from Depth-and-Normal Maps on GPU.
- Authors
Ji, Zhongping; Sun, Xianfang; Li, Shi; Wang, Yigang
- Abstract
To design a bas-relief from a 3D scene is an inherently interactive task in many scenarios. The user normally needs to get instant feedback to select a proper viewpoint. However, current methods are too slow to facilitate this interaction. This paper proposes a two-scale bas-relief modeling method, which is computationally efficient and easy to produce different styles of bas-reliefs. The input 3D scene is first rendered into two textures, one recording the depth information and the other recording the normal information. The depth map is then compressed to produce a base surface with level-of-depth, and the normal map is used to extract local details with two different schemes. One scheme provides certain freedom to design bas-reliefs with different visual appearances, and the other provides a control over the level of detail. Finally, the local feature details are added into the base surface to produce the final result. Our approach allows for real-time computation due to its implementation on graphics hardware. Experiments with a wide range of 3D models and scenes show that our approach can effectively generate digital bas-reliefs in real time.
- Subjects
REAL-time computing; MATHEMATICAL mappings; GRAPHICS processing units; FEEDBACK control systems; COMPUTER graphics; COMPUTER vision
- Publication
Computer Graphics Forum, 2014, Vol 33, Issue 5, p75
- ISSN
0167-7055
- Publication type
Article
- DOI
10.1111/cgf.12433