视音频编解码技术发展现状和展望(四)4视音频编解码技术展望由于数字视频编码的核心是对信号进行压缩,所以不断提高编码压缩效率仍是混合编码的主要发展目标。
但是追求更高的压缩效率需要对传统的“变换+运动补偿+基于视觉的量化+熵编码”框架有所突破,给视频编码性能带来新的提升。
可伸缩的视频编码技术因为具有良好的网络适应性,所以围绕它的应用,尤其是网络环境下的应用,会越来越多。
可以预见,在未来的网络视频监控中,可伸缩技术将是保证网络传输质量的一个重要实现技术。
而多视点编码方法的研究会集中在多视点视频的采集与校准,场景深度及几何信息获取(立体匹配),多视点视频编码,多视点视频通信,新视图渲染以及最终的交互或立体显示等6大关键上,这些技术的突破会为自由视点电视(FTV)、立体电视(3DTV)和沉浸感视频会议的应用提供技术支持。
作为SVC、MVC等各类视频编码的基础,混合框架的编码仍有很强的生命力。
同时随着网络、通信、娱乐业对数字媒体的广泛需求,A VS、H.264这一代标准被普遍接受,相应的产品开发工作相当重要。
包括编解码芯片、整机和系统。
应用领域涉及数字电视、卫星电视、移动电视、手机电视、网络电视、时移电视机、新一代光盘存储媒体、安防监控、智能交通、会议电视、可视电话、数字摄像机等等。
其中,安防监控领域是音视频编解码技术的主要应用领域之一。
编解码技术在这个领域的应用,需要结合安防监控领域的特殊需求进行研究。
只有在这个方向掌握有自主知识产权的核心技术,我国的安防监控产业才能健康持续的发展。
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