Abstract
Interactive network-based walkthroughs in large urban environments raise difficult problems due to the size and density of these scenes. Thanks to the strong occlusion complexity of such environments, visibility streaming is a particularly efficient technique for minimizing the network load. In this paper, we present a solution which relies on client-side processing of visibility information so as to minimize the server workload. To solve the problem of transmitting the visibility data to the client, we suggest a bi-level compression scheme for the visibility sets that performs significantly better than previous methods. As a result, the visibility sets can be efficiently transmitted on-demand to the client and then used for adaptive streaming and rendering. Finally, we present our experimental results for a virtual city walkthrough.
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Aliaga, D., Manocha, D.: Interactive Walkthrough of Large Geometric Datasets (2000), http://www.cs.unc.edu/~geom/SIG00_COURSE
Cohen-Or, D., Fibich, G., Halperin, D., Zadicario, E.: Conservative Visibility and Strong Occlusion for Viewspace Partitioning of Densely Occluded Scenes. Computer Graphics Forum 17, 243–254 (1998)
Funkhouser, T.A.: Database Management for Interactive Display of Large Architectural Models. In: Proc. Graphics Interface 1996, pp. 1–8 (1996)
Cohen-Or, D., Chrysanthou, Y., Silva, C., Durand, F.: A Survey of Visibility for Walkthrough Applications. IEEE Transactions on Visualization and Computer Graphics, 412–431 (2003)
Gioia, P., Aubault, O., Bouville, C.: Real-Time Reconstruction of Wavelet Encoded Meshes for View-Dependent Transmission and Visualisation. IEEE Trans. on CSVT 14, 1009–1020 (2004)
Schmalstieg, D., Gervautz, M.: Demand-Driven Geometry Transmission for Distributed Virtual Environments. Computer Graphics Forum 15, 421–432 (1996)
Pantazopoulos, I., Tzafestas, S.: Occlusion Culling Algorithms: A Comprehensive Survey. Journal of Intelligent and Robot Systems 35, 123–156 (2002)
Cohen-Or, D., Zadicario, E.: Visibility Streaming for Network-based Walkthrough. In: Proc. Graphics Interface 1998, pp. 1–7 (1998)
Leyvand, T., Sorkine, O., Cohen-Or, D.: Ray Space Factorization for From-Region Visibility. ACM Transactions on Graphics (Proceedings of SIGGRAPH 2003) 22, 595–604 (2003)
Wonka, P., Wimmer, M., Schmalstieg, D.: Visibility Preprocessing with Occluder Fusion for Urban Walkthroughs. In: 11th Eurographics Workshop on Rendering, pp. 71–82 (2000)
Marvie, J.E., Bouatouch, K.: A Vrml97-X3D Extension for Massive Scenery Management in Virtual Worlds. In: Proceedings of the ninth international conference on 3D Web technology, pp. 145–153 (2004)
van de Panne, M., Stewart, A.: Effective Compression Techniques for Precomputed Visibility. In: 12th Eurographics Workshop on Rendering, pp. 305–316 (1999)
Gotsman, C., Sudarsky, O., Fayman, J.: Optimized Occlusion Culling Using Five-Dimensional Subdivision. Computer & Graphics 23(5), 645–654 (1999)
Zach, C., Karner, K.: Progressive Compression of Visibility Data for View-dependent Multiresolution Meshes. In: WSCG 2003, vol. 11 (2003)
Nadler, B., Fibich, G., Lev-Yehudi, S., Cohen-Or, D.: A qualitative and quantitative visibility analysis in urban scenes. Computer & Graphics 23, 655–666 (1999)
Koltun, V., Chrysanthou, Y., Cohen-Or, D.: Virtual Occluders: An efficient Intermediate PVS Representation. In: 11th Eurographics Workshop on Rendering, pp. 59–70 (2000)
Moreira, F., Comba, J., Freitas, C.: Smart Visible Sets for Networked Virtual Environments. In: SIBGRAPI, pp. 373–380 (2002)
Chhugani, J., Purnomo, B., Krishnan, S., Venkatasubramanian, S., Johnson, D., Kumar, S.: vLOD: High-Fidelity Walkthrough of Large Virtual Environments. IEEE Transactions on Visualization and Computer Graphics 11 (2005)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Bouville, C., Marchal, I., Bouget, L. (2005). Efficient Compression of Visibility Sets. In: Bebis, G., Boyle, R., Koracin, D., Parvin, B. (eds) Advances in Visual Computing. ISVC 2005. Lecture Notes in Computer Science, vol 3804. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11595755_30
Download citation
DOI: https://doi.org/10.1007/11595755_30
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-30750-1
Online ISBN: 978-3-540-32284-9
eBook Packages: Computer ScienceComputer Science (R0)