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The last years have witnessed a dramatic growth in the number as well as thevariety of graphics intensive mobile applications, which allow users tointeract and navigate through large scenes such as ancient places, museums andeven virtual cities. These applications support many clients and impose a heavyrequirement on network resources and computational resources. One key issue inthe design of cost efficient mobile walkthrough applications is the datatransmission between servers and mobile client devices. In this paper, wepropose an effective progressive mesh transmission framework that stores anddivide scene objects into different resolutions. This way, each mobileprogressively receives and process the only object's details that match withits display resolution, and hence improving the user's perception and overallsystem's response time. A fine grained cache mechanism is used to keep the mostfrequently requested objects' details in the device memory and consequentlyreduce the network traffics. Lastly, practical experiments are carried out toillustrate the effectiveness of the proposed framework under various setting ofthe virtual scene and mobile devices configuration/types.

Virtual Reality Wireless Mobile Walkthrough Framework