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《Geospatial World》,2013年7月刊国际标准将于2013年1月正式出台,兼容HEVC标准的接收机和机顶盒最快将于2014年上半年面世。与MPEG-4(H.264)标准相比,HEVC技术的压缩效率将提高30%~50%,意味着传输同等画质视频的带宽需求可能将降低到现在的一半。随着信息技术的发展和发展理念的革新,各国城市交通部门的重点正逐渐从建设新的公路基础设施,向提升现有基础设施效能的方向转移。以地理信息系统(GIS)技术为支撑的智能交通系统(ITS)应运而生,并正在交通管理、事故管理和安
Geospatial World, July 2013 issue International standards will be formally introduced in January 2013. Receivers and set-top boxes compatible with the HEVC standard will be available in the first half of 2014 as soon as possible. Compared with the MPEG-4 (H.264) standard, HEVC compression efficiency will be increased by 30% to 50%, which means the bandwidth requirement for delivering the same quality video may be reduced to half of the current. With the development of information technology and the innovation of the concept of development, the focus of urban transport departments in various countries is gradually shifting from building new road infrastructure and upgrading the efficiency of existing infrastructure. Intelligent Transportation Systems (ITS) supported by Geographic Information System (GIS) technology emerge as the times, and are in the process of traffic management, accident management and safety