Showing papers by "Sonia Fahmy published in 2022"
01 Oct 2022
TL;DR: The environment mapped part of the frame is well integrated with the part rendered from geometry, and not just a disconnected and inert background.
Abstract: This paper describes a method for reducing rendering load such that complex virtual environments (VEs) can be deployed on “thin” VR systems with limited rendering power. The method partitions the VE into four regions: a near region, an intermediate region, a stationary far region, and a dynamic far region. The stationary far region is replaced with an environment map, which brings a substantial rendering load reduction. The other three regions are rendered from geometry: the near region is rendered from the user viewpoint, the dynamic far geometry is rendered from the center of the environment map, and the intermediate region is rendered with a morph that switches viewpoint gradually from the user viewpoint to the center of the environment map. The intermediate region connects the near and far regions seamlessly. Furthermore, the environment map is enhanced with per pixel range which allows depth compositing the dynamic and stationary far geometry. An IRB approved user study (N = 22) found significant advantages for our method over conventional near-far partitioning.
11 Jul 2022
TL;DR: An optimization to reduce the latency incurred by a stateless 5G control plane by reading the user’s state only once and sending it to successive network functions in a chain to avoid redundant database read operations.
Abstract: We propose an optimization to reduce the latency incurred by a stateless 5G control plane. The key idea is to avoid redundant database read operations. We achieve this by reading the user’s state only once and sending it to successive network functions in a chain. Experimental results show that this optimization can reduce the total cost by 33% on average.