Database management for interactive display of large architectural models
GI '96 Proceedings of the conference on Graphics interface '96
Occlusion Culling Algorithms: A Comprehensive Survey
Journal of Intelligent and Robotic Systems
Smart Visible Sets for Networked Virtual Environments
SIBGRAPI '02 Proceedings of the 15th Brazilian Symposium on Computer Graphics and Image Processing
Virtual Occluders: An Efficient Intermediate PVS Representation
Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Visibility Preprocessing with Occluder Fusion for Urban Walkthroughs
Proceedings of the Eurographics Workshop on Rendering Techniques 2000
Ray space factorization for from-region visibility
ACM SIGGRAPH 2003 Papers
A VRML97-X3D extension for massive scenery management in virtual worlds
Proceedings of the ninth international conference on 3D Web technology
vLOD: High-Fidelity Walkthrough of Large Virtual Environments
IEEE Transactions on Visualization and Computer Graphics
A survey of visibility for walkthrough applications
IEEE Transactions on Visualization and Computer Graphics
Real-time reconstruction of wavelet-encoded meshes for view-dependent transmission and visualization
IEEE Transactions on Circuits and Systems for Video Technology
Effective compression techniques for precomputed visibility
EGWR'99 Proceedings of the 10th Eurographics conference on Rendering
Proceedings of the eleventh international conference on 3D web technology
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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.