Interactive view-dependent multiresolution on low-capacity clients
Zhi Zheng, Tony K. Y. Chan · 2006
In this paper, we present a novel client-server scheme for view-dependent multiresolution rendering. The server hosts the multiresolution hierarchy, selects and delivers necessary mesh updates to the client according to the client's view parameters. The low-capacity client with limited triangle budget maintains the selectively refined mesh with little memory overhead and renders the mesh interactively to the end user. We focus on overcoming the network latency and realizing interactive frame rate on the client. Our solution is to make the client process and the server process run in parallel within a frame, and use the rendering time to cover the network latency. A view-parameters prediction mechanism is developed to make the parallelism of the client and the server feasible. Our approach dramatically reduces the frame time compared to the previous sequential method, and can achieve interactive frame rate in the system environment where the sequential method can not. The view-dependent rendering result of our parallel algorithm with predicted view parameters is very close to that of the sequential algorithm which uses actual view parameters. Also our prediction strategy and parallel algorithm can be extended to be used in networks with relatively long round-trip time.