与虚拟节目主持人对话场景的研究与实现

借助于多种技术的集成，使得主持人在实际场景中和参与的观众进行虚拟实时交流，从而使其他观众看到主持人和参与的观众正在做节目的互动。该文介绍实时合成技术及现场多路视频自动切换技术，并以“与主持人实时虚拟知识问答”为例介绍该技术实现的原理和方法。

Research and Realization of Conversation Scene with Host in Virtual Show

With the help of integrated multi-technology, the host communicate is made with the spectators in the actual scene. The spectator who is participating in the interaction is making a program with the host on the screen. This article introduces the technology of real-time composition and the technology of automatic interchange in multiple video frequency on the spot, and presents the principles and methods by the example of real-time virtual knowledge questions and answers with the host.