【作者】 王广生； 高新； 孙树文；

【机构】 北京工业大学微特电机科技博物馆；

【摘要】 全景视频是比全景图片更高级的一种虚拟现实技术,它使用数个摄像机联合拍摄周围180°或360°的景物,并通过全景缝合的手段,将数个摄像机所拍摄的数个视频合成为一体,生成全景视频,真实地再现了摄像机群周围的实况全景。本文既涉及较为深入的理论算法研究,又有计算机技术架构上的创新,还包括对全景视频在应用上的开发,同时讨论了多摄像机群的部署上的问题。在计算机工程上,本文提出了一套用于生成全景视频的高性能计算架构。它采用图形处理器作为协处理器,将全景视频生成算法的大部分工作移交到图形处理器完成,使原本需要数十个中央处理器才能完成的计算任务,用一个图形处理器即可胜任,极大地降低了中央处理器的使用个数。在全景视频的应用上,本文建立了一套全景实况现场直播系统。它是将全景视频与IPTV技术结合起来,将生成的全景视频通过剪裁、压缩编码、传输等步骤发送给远程的观众。借助全景视频,远程的观众在观看现场节目时,可以自由地观看他们感兴趣的区域,摆脱了以往摄像师控制视野的束缚,让观众如身临其境般左顾右盼。这种技术将改变传统电视直播形式,产生一种新的全景直播方式,为数字博物馆参观提供了新途径。更多还原

【Abstract】 Panoramic video is a virtual reality technology more advanced than its imaging counterpart,it uses multi-camera schemeto capture 180° or 360°surrounding,and subsequently stitches the multiple videos into a wide-angle,high resolution panoramic video,which recreates real environment of the surroundings of the cameras.This paper discusses on the theory algorithm and implementation in computer engineering,as well as the application of the panoramic video.On the research of computer engineering,this dissertation proposes a high-performance architecture to panoramic video generation.It adopts graphic processor as secondary processor to perform the most of the work on the panroammic video generating,which drastically reduced the requirement number of the central processors.On the application of the panoramic video,this dissertation describes the construction of a panoramic live broadcast system,which combining the panoramic video with IPTV technology,deliver the panoramic video to the remote watchers through the processes of clipping,encoding and network sending,owing to panoramic video,the remote viewers have the ability to change their field of vision freely,they can look wherever they interested,which lifts the traditional view restriction by photographer.This technology revolutionizes the traditional TV live broadcast,bringing a new TV live broadcast,which open a new scene of the Digital Museum live broadcast in the exhibition way.更多还原