Hybrid and forward error correction transmission techniques for unreliable transport of 3D geometry

Proceedings of the 17th ACM International Conference on Multimedia

Liú

Ooi

2009

Progressive mesh streaming is increasingly used in 3D networked applications, such as online games, virtual worlds, and digital museums. To scale such applications to a large number of users without high infrastructure cost, we apply peer-to-peer techniques to mesh streaming. We consider two issues: how to partition a progressive mesh into chunks and how to lookup the provider of a chunk. For the latter issue, we investigated into two solutions, which trade off server overhead and response time. The first uses a simple centralized lookup service, while the second organizes peers into groups according to the hierarchical structure of the progressive meshes to take advantage of access pattern. Simulation results show that our proposed systems are robust under high churn rate, reduce the server overhead by more than 90%, keep control overhead below 10%, and achieve low average response time.

Section: Streaming Of 3d Datamentioning

confidence: 99%

“…Al-Regib et al [2] consider a joint-source channel coding method to determine appropriate level of error protection to use. Chen et al [7] also use FEC for transmission of 3D data. Error concealment is considered by Park et al [22].…”

Section: Streaming Of 3d Datamentioning

confidence: 99%

Peer-assisted view-dependent progressive mesh streaming

Proceedings of the 17th ACM International Conference on Multimedia

Liú

Ooi

2009

“…Point based representation of an object is inherently loss resilient, and is used by Rusinkiewicz and Levoy [Rusinkiewicz and Levoy 2001] and Tarin et al [Tari et al 2005]. Others have considered error control mechanisms for improving the rendered mesh quality [Al-Regib et al 2002;Chen et al 2005].…”

Section: Streaming Of 3d Modelsmentioning

confidence: 99%

Compact and progressive plant models for streaming in networked virtual environments

ACM Trans. Multimedia Comput. Commun. Appl.

Morin

Grigoras

et al. 2009

Just as in the real world, plants are important objects in virtual worlds for creating pleasant and realistic environments, especially those involving natural scenes. As such, much effort has been made in realistic modeling of plants. As the trend moves towards networked and distributed virtual environments, however, the current models are inadequate as they are not designed for progressive transmissions. In this paper, we fill in this gap by proposing a progressive representation for plants based on generalized cylinders. We model the shape and thickness of branches in a plant as Bézier curves, group the curves according to the similarity, and differentially code the curves to represent the plant in a compact and progressive manner. To facilitate the transmission of the plants, we quantify the visual contribution of each branch and use this weight in packet scheduling. We show the efficiency of our representations and the effectiveness of our packet scheduler through experiments over a wide area network.

“…The point based representation of an object is inherently loss resilient, and is used by Rusinkiewicz and Levoy [28] and Tarin et al [30]. Others have considered error control mechanisms for improving the rendered mesh quality [1,6].…”

Section: Streaming Of 3d Modelsmentioning

confidence: 99%

Streaming of plants in distributed virtual environments

Proceedings of the 16th ACM International Conference on Multimedia

Morin

Grigoras

et al. 2008

Just as in the real world, plants are important objects in virtual world for creating pleasant and realistic environments, especially those involving natural scenes. As such, much effort has been made in realistic modeling of plants. As the trend moves towards networked and distributed virtual environment, however, the current models are inadequate as they are not designed for progressive transmissions. In this paper, we fill in this gap by proposing a progressive representation for plants based on generalized cylinders. To facilitate the transmission of the plants, we quantify the visual contribution of each branch and use this weight in packet scheduling. We show the efficiency of our representations and effectiveness of our packet scheduler through simulations.