高清气象影视虚拟演播室系统设计与调试

以华风集团高清虚拟演播室建设项目为案例,论述了高清虚拟演播室技术在系统建设、系统调试、天气预报节目业务实现环节需要重点解决的几个问题和难点。根据气象电视节目制作要求,在从虚拟演播室系统系统建设到节目制作业务化的整个过程中,重点解决了音频系统延时量计算、绿箱景区施工、绿箱景区灯光布局、绿箱色键抠像调试、摄像机定位与跟踪调试、气象数据调用与转换共6个关键性技术问题。此次业务系统实践的成功是虚拟演播室技术在全国气象影视行业高清节目制作中的应用和推广的很好尝试。

Design and Debugging of HD Meteorological Television Virtual Studio System

Taking the HD virtual studio construction project of Huafeng group as an example, several problems and difficulties that need to be resolved with priority in HD virtual studio technology application are discussed in the aspects of system construction, system calibration, and weather forecast services. According to the requirements of weather television program making, six vital technical problems in the entire process of virtual studio system design and program making are solved, including the audio system delay calculation method, green box construction and lighting layout, chroma key calibration, camera positioning, tracking calibration, and meteorological data transferring and conversion. The success of this system practice is a good example to apply and popularize virtual studio technologies in weather television industry in China.