基于FPGA的全景视频拼接系统的防抖动设计  

The anti-jitter design of panoramic video mosaic system based on FPGA

作　　者：付强 钱宏文[1] 刘会 王小妮 FU Qiang;QIAN Hongwen;LIU Hui;WANG Xiaoni(China Electronics Technology Group Corporation No.58 Research Institute,Wuxi 214035,China)

机构地区：[1]中国电子科技集团公司第58研究所,江苏无锡214035

出　　处：《电子设计工程》2021年第3期167-170,共4页Electronic Design Engineering

摘　　要：针对因传输线缆长度、外部电磁干扰等因素导致的视频在传输过程中出现抖动,进而引起全景视频拼接系统中某一区域出现拼接错位现象,采用了基于FPGA的软件防抖动设计,在FPGA内部添加乒乓缓存机制,逐帧检测接收到的视频帧的完整性,对抖动情况下视频帧有效像素丢失或超出分别进行处理,在不增加硬件成本的前提下解决视频抖动引起的全景视频拼接显示错位问题。通过现场跑车试验,证明在车速不超过80 km/h情况下视频拼接输出无抖动现象。In view of the jitter in the transmission process caused by the transmission cable length,external electromagnetic interference and other factors,which caused a splicing misalignment in a certain area of the panoramic video splicing system,an FPGA-based software anti-shake design was adopted,add a ping-pong buffer mechanism inside the FPGA,detect the integrity of the received video frame frame by frame,deal with the loss or excess of the effective pixel of the video frame in the case of jitter,and solve the panoramic video caused by video jitter without increasing the hardware cost stitching shows misalignment.Through the on-site sports car experiment,it is proved that the video splicing output has no jitter when the vehicle speed does not exceed 80 km/h.

关 键 词：视频拼接 SDI DDR4 乒乓缓存 

分 类 号：TN919.8[电子电信—通信与信息系统]