| Title: | warping of a spherical representation of image-based models on gpu |
| Author: | Zhu Jian
; Liu Youquan
; Bao Kai
; Chang Yuanzhang
; Wu Enhua
|
| Source: | Proceedings - VRCAI 2009: 8th International Conference on Virtual Reality Continuum and its Applications in Industry
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| Conference Name: | VRCAI 2009: 8th International Conference on Virtual Reality Continuum and its Applications in Industry
|
| Conference Date: | 40878
|
| Issued Date: | 2009
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| Conference Place: | Yokohama, Japan
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| Keyword: | Computer graphics equipment
; Spheres
; Virtual reality
; Weaving
|
| Publish Place: | United States
|
| ISBN: | 9781605589121
|
| Department: | (1) Department of Computer and Information Science, University of Macau, China; (2) School of Information Engineering, Changan University, Xian, China; (3) State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing, China
|
| Sponsorship: | ACM SIGGRAPH
|
| English Abstract: | Image warping techniques are frequently used to render 3D scenes from images with depth information for VR applications. In this paper, we first propose a spherical representation of image-based models call the Spherical Depth Image (SDI). With two Warping Equations, at runtime we then pre-warp the image onto a view-dependent plane to get an intermediate image, which is further rendered onto the target image plane using standard texture mapping. Compared with other representations, SDI is sampled uniformly and completely, therefore it can reduce much unnecessary rendering overhead and the resultant rendered image is hole-free. To speed up the computation and utilize hardwares rasterization function for image interpolation, we transport the pre-warping process into GPUs Vertex Shader. Besides, high quality rendering effect in Pixel Shader can also be achieved as traditional geometry based methods. Finally, we overcome the approachs limitation of viewing region, and design a real-time walkthrough system with LOD representations of the SDIs. Copyright © 2009 by the Association for Computing Machinery, Inc. |
| Content Type: | 会议论文
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| URI: | http://ir.iscas.ac.cn/handle/311060/8448
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| Appears in Collections: | 计算机科学国家重点实验室 _会议论文
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| Recommended Citation: | |
Zhu Jian,Liu Youquan,Bao Kai,et al. warping of a spherical representation of image-based models on gpu[C]. 见:VRCAI 2009: 8th International Conference on Virtual Reality Continuum and its Applications in Industry. Yokohama, Japan. 40878.
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