期刊
ACM COMPUTING SURVEYS
卷 54, 期 8, 页码 -出版社
ASSOC COMPUTING MACHINERY
DOI: 10.1145/3469094
关键词
Deep learning; content delivery networks; distributed systems
This article explores the state-of-the-art content delivery systems that utilize neural enhancement for achieving fast response time and high visual quality. It highlights the importance of neural enhancement in addressing technical challenges and analyzes existing systems and design decisions in efficiently overcoming these challenges.
Internet-enabled smartphones and ultra-wide displays are transforming a variety of visual apps spanning from on-demand movies and 360 degrees videos to video-conferencing and live streaming. However, robustly delivering visual content under fluctuating networking conditions on devices of diverse capabilities remains an open problem. In recent years, advances in the field of deep learning on tasks such as super-resolution and image enhancement have led to unprecedented performance in generating high-quality images from low-quality ones, a process we refer to as neural enhancement. In this article, we survey state-of-the-art content delivery systems that employ neural enhancement as a key component in achieving both fast response time and high visual quality. We first present the components and architecture of existing content delivery systems, highlighting their challenges and motivating the use of neural enhancement models as a countermeasure. We then cover the deployment challenges of these models and analyze existing systems and their design decisions in efficiently overcoming these technical challenges. Additionally, we underline the key trends and common approaches across systems that target diverse use-cases. Finally, we present promising future directions based on the latest insights from deep learning research to further boost the quality of experience of content delivery systems.
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