Immersive Multimedia Communication: State-of-the-Art on eXtended Reality Streaming
It addresses the problem of improving XR streaming for content creators and consumers, but it is incremental as it synthesizes existing research without presenting new results.
This survey reviews state-of-the-art methods in extended reality (XR) streaming, analyzing traffic characteristics and visual attention-based optimizations to enhance user experience and efficiency.
Extended reality (XR) is rapidly advancing, and poised to revolutionize content creation and consumption. In XR, users integrate various sensory inputs to form a cohesive perception of the virtual environment. This survey reviews the state-of-the-art in XR streaming, focusing on multiple paradigms. To begin, we define XR and introduce various XR headsets along with their multimodal interaction methods to provide a foundational understanding. We then analyze XR traffic characteristics to highlight the unique data transmission requirements. We also explore factors that influence the quality of experience in XR systems, aiming to identify key elements for enhancing user satisfaction. Following this, we present visual attention-based optimization methods for XR streaming to improve efficiency and performance. Finally, we examine current applications and highlight challenges to provide insights into ongoing and future developments of XR.