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首页> 外文期刊>Proceedings of the IEEE >Video Adaptation: Concepts, Technologies, and Open Issues
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Video Adaptation: Concepts, Technologies, and Open Issues

机译：视频改编：概念，技术和未解决的问题

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摘要

Video adaptation is an emerging field that offers a rich body of techniques for answering challenging questions in pervasive media applications. It transforms the input video(s) to an output in video or augmented multimedia form by utilizing manipulations at multiple levels (signal, structural, or semantic) in order to meet diverse resource constraints and user preferences while optimizing the overall utility of the video. There has been a vast amount of activity in research and standard development in this area. This paper first presents a general framework that defines the fundamental entities, important concepts (i.e., adaptation, resource, and utility), and formulation of video adaptation as constrained optimization problems. A taxonomy is used to classify different types of adaptation techniques. The state of the art in several active research areas is reviewed with open challenging issues identified. Finally, support of video adaptation from related international standards is discussed.
机译：视频适应是一个新兴领域，它提供了丰富的技术来回答普适媒体应用中的难题。通过利用多个级别（信号，结构或语义）上的操作，它可以将输入视频转换为视频或增强的多媒体形式的输出，从而满足各种资源限制和用户偏好，同时优化视频的整体效用。在这一领域，研究和标准制定活动很多。本文首先介绍了一个通用框架，该框架定义了基本实体，重要概念（即适应，资源和效用）以及视频适应作为约束优化问题的表述。分类法用于对不同类型的适应技术进行分类。审查了几个活跃的研究领域中的最新技术，并确定了开放的挑战性问题。最后，讨论了相关国际标准对视频适应的支持。

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