基于GPU加速的实时4K全景视频拼接

摘要

Virtual reality is a popular technique in recent years,and panoramic video capture is an important way of producing the content of virtual reality.In this paper,we proposed a practical system that can stitch 4K panoramic video in real time.The inputs of our system are 6 candidate videos with 2K resolution,and output is a 4K stitched video.With the parallelization of the whole procedure,we can efficiently implement the whole system in GPU.Experimental results show that our system can produce high-quality 4K panoramic video.%虚拟现实是近年来热门的新技术,而全景视频摄制是生产虚拟现实内容的一种重要方式.介绍了一个全景视频拼接系统,其能够对六路的2K视频实时进行拼接,生成4K的输出视频.设计了一个并行化的拼接流程,对整个拼接过程中的不同步骤都进行了并行化处理,并在GPU上进行了实现.实验结果表明,该系统能够实时拼接出高质量的4K全景视频.