Reprojection of textured depth map for network rendering

Rendering over the network is widely used in visualization related applications. In this paper, a novel network rendering method for large-scale digital models is proposed. It uses an extension of textured depth map, called Screen Instance Map (SIM) that stores sparse server rendered results and rebuilds in-between frames in the client. The server side is only responsible for the creation of SIMs. A cache module, which is used to manage the SIMs, is introduced to improve the performance of the client. The proposed method can be applied to arbitrary models and can be easily extended to various rendering methods. Experiment results show that the implemented system can provide interactive frame rate for large-scale models. Compared with existing solutions, this method needs no additional meshes or keeping viewing history for each client in the server.