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虚拟演播室是目前比较新颖独特的电视节目制作技术,其实质就是将计算机制作的虚拟三维场景和电视摄像机所拍摄的真实场景进行数字化合成。虚拟演播室的主要内容有摄像机跟踪、计算机虚拟场景生成以及视频合成三个部分,虚拟演播室在电视节目制作中的应用主要体现在建模及红外检测、设计虚拟人物以及虚拟影子三个方面。目前来看,虚拟演播室在电视节目制作中的优势主要有创意自由、降低成本、方便升级以及解决传输抠像失真问题。
The virtual studio is a relatively new and unique television program production technology. The essence of the virtual studio is to digitally synthesize the virtual three-dimensional scene produced by the computer and the real scene taken by the television camera. The main contents of the virtual studio include camera tracking, computer virtual scene generation and video synthesis. The application of the virtual studio in television program production is mainly embodied in three aspects: modeling and infrared detection, designing virtual characters and virtual shadows. At present, the main advantages of virtual studio in television program production are creativity, freedom, cost reduction, convenience upgrade, and transmission keying distortion.