Construction of Free ImageBased Virtual Space
-
摘要: 使用基于图像的绘制技术构造虚拟实景空间是目前虚拟现实领域研究的热点. 如何扩大自由度是虚拟实景空间需要解决的关键问题.自由虚拟实景空间是能够自由操纵的 虚拟实景空间. 提出同心球拼图的方法构造自由虚拟实景空间,能满足用户在自由漫游时俯 视和仰视的需要.另外在自由虚拟实景空间中引入超链的思想,通过对虚拟空间中虚拟对象 进行有效的组织,为用户提供丰富的空间操纵能力.试验结果表明,用户在自由虚拟实景空 间中能够自由地操纵虚拟空间.Abstract: The important research field of virtual reality (VR)is how to construct image-b ased virtual space by image-based rendering techniques. How to enlarge the extent of freedom is the key issue. Free image-based virtual space (FIBVS) is a kind of this virtual space where users can manipulate freely. A method called conspherical mosaics to construct FIBVS was presented, and user s could look down and look up freely when they walk in it. The idea of hyperlink was used to organize those virtual objects so that users could manipulate these objects in FIBVS. The experimental results show that users can manipulate space freely in FIBVS.
-
Key words:
- computer graphics /
- computer vision /
- image processing /
- virtual reality /
- image -based rendering
-
[1] Chen S. QuickTime VR——an image-based approach to virtual environment na vigation. ACM SIGGRAPH'95. 1995. 29~38 [2] Shum H Y, He L W. Rendering with concentric mosaics. ACM SIGGRAPH'99. 1999. 299~306 [3] Chen S, Williams L. View interpolation for image synthesis. ACM SIGG RAPH'93. 1993. 279~288 [4] Seitz S M, Dyer C R. View morphing. ACM SIGGRAPH'96. 1996. 2 1~30 [5] Mark W R. Post-rendering 3D image warping. TR99-022, US:Carolina Graphics and Image Processing Laboratory, 1999 [6] Shad J, Gortler S, He L W,et al. Layered depth images. ACM SIGG RAPH'98. 1998. 231~242 [7] Adelson E H, Bergen J. The plenoptic function and the elements of early v ision. Computational Models of Visual Processing. US:MIT Press, 1991. 3~20 [8] McMillan L, Bishop G. Plenoptic modeling:An image-based rendering syste m. ACM SIGGRAPH'95. 1995. 39~46 [9] Hirose M. Generation of wide-range virtual spaces using photographic ima ges. IEEE Virtual Reality Annual International Symposium. 1998 [10] Gortler S J, Grzeszczuk R, Szeliski R. The lumigraph. ACM SIGG RAPH'96. 1996. 43~54 [11] Levoy M, Hanrahan P. Light field rendering. ACM SIGGRAPH'96. 1996. 31~42 [12] Xiong Y, Turkowski K. Creating image-based VR using a self-calibrating fisheye lens. Proceedings of CVPR'97. 1997.237~243 [13] Wu M S, Sun H H, Shum H Y. Real-time stereo rendering of concentric mos aics with linear interpolation. IEEE/SPIE Visual Communications and Image P rocessing. 2000.23~30 -
点击查看大图
计量
- 文章访问数: 1926
- HTML全文浏览量: 63
- PDF下载量: 4
- 被引次数: 0
下载:
