Research Article

Fast display of large-scale forest with fidelity

  1. Huaisheng Zhang,
  2. Wei Hua,
  3. Qing Wang,
  4. Hujun Bao*

Article first published online: 8 FEB 2006

DOI: 10.1002/cav.69

Issue

Computer Animation and Virtual Worlds

Computer Animation and Virtual Worlds

Volume 17, Issue 2, pages 83–97, May 2006

Additional Information

How to Cite

Zhang, H., Hua, W., Wang, Q. and Bao, H. (2006), Fast display of large-scale forest with fidelity. Comp. Anim. Virtual Worlds, 17: 83–97. doi: 10.1002/cav.69

Author Information

*State Key Lab of CAD & CG, Zhejiang University, Hangzhou 310027, PR China.

Publication History

  1. Issue published online: 5 APR 2006
  2. Article first published online: 8 FEB 2006
  3. Manuscript Accepted: 22 DEC 2004
  4. Manuscript Received: 12 OCT 2004

Funded by

  • National Program on Key Basic Research Projects. Grant Number: 2002CB312102
  • National Natural Science Foundation of China. Grant Numbers: 60021201, 60203014

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Keywords:

  • LOD;
  • layered depth image (LDI);
  • depth mosaic (DM);
  • interactive rendering

Abstract

We propose a new hierarchical representation for a forest model, namely hierarchical layered depth mosaics (HLDM). Each node in the HLDM comprises a number of discrete textured quadrilaterals, called depth mosaics (DMs). The DMs are generated from the sampled depth images of the polygonal tree models. Meanwhile, their textures are compressed by a new approach accounting for occlusion. Our rendering procedure traverses the HLDM and renders the appropriate nodes according to a view-dependent selection criterion. A blending scheme is adopted to mitigate the visual ‘popping’ caused by the transition of levels of detail. The experiment demonstrates that the viewer could interactively walk or fly above the forest with fidelity. Copyright © 2006 John Wiley & Sons, Ltd.

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