Abstract-Virtual reality (VR) applications target high-quality and zero-latency scene navigation to provide users with a fullimmersion sensation within a scene. From a network perspective, this requires transmission of the omnidirectional content in its entirety, at a high resolution, which is not always feasible in bandwidth-limited networks. In this work, we propose an optimal transmission strategy for virtual reality applications able to fulfill the bandwidth requirements, while optimizing the end-user quality experienced in the navigation. In further detail, we consider a tile-based coded content for adaptive streaming systems, and we propose a navigation-aware transmission strategy at the clientside (i.e., adaptation logic), which is able to optimize the rate at which each tile is downloaded. First, we introduce the viewportquality as metric that reflects the quality of any portion of the sphere displayed by the end-user. Then, we cast the tile-rate optimization as an integer linear programming problem and show that the proposed solution achieves substantial quality gains when compared to state-of-the-art adaptation logic methods.
A navigation-aware adaptive streaming strategy is presented in REF , where the aim is to optimize the rate at which a tile is downloaded during the navigation of the 360 o video.
Navigation-aware adaptive streaming strategies for omnidirectional video
2017 IEEE 19th International Workshop on Multimedia Signal Processing (MMSP)
2017 IEEE 19th International Workshop on Multimedia Signal Processing (MMSP)
Computer Science