全景视频数据的网络同步与合成技术研究  

作　　者：丘美玲[1] 晏细兰[1] 陈惠红[1] 

机构地区：[1]广州番禺职业技术学院,广东广州511483

出　　处：《科技创新与应用》2022年第6期42-45,共4页Technology Innovation and Application

基　　金：广州市教育教学改革项目(1007/210113179);广州番禺职业技术学院校级科技类重点项目(2018KJ004)。

摘　　要：由于全景视频是由多个有一定重叠区域图像组成的,对于运动目标而言,在时域上存在一定的空间差异性,当全景拼接采用了不同步的图片,且公共区域内出现了运动目标,即使背景拼接成功,融合拼接后运动目标会出现重影。对于一个监控系统,视频中运动物体才是人们感兴趣的,如果出现数据不同步将会大大影响监控质量。文章分析全景合成过程中的同步问题,通过缓存机制和帧对齐的方法提高全景图像合成的同步率,并分析全景视频中各个局部全景与特定浏览区域的空间位置关系,使用多分辨方式快速提取全景中的局部敏感区域;对比投影过程中直接计算全景图像和利用查找表计算投影图像的效率差异,通过查找表方法可以有效减少图像投影的计算量。Since the panoramic video is composed of multiple images with certain overlapping areas,there are certain spatial differences in the time domain for the moving target.When the panoramic mosaic adopts asynchronous pictures and the moving target appears in the public area,even if the background mosaic is successful,the moving target will appear ghosting after fusion splicing.For a monitoring system,people are interested in moving objects in video.If the data is not synchronized,the monitoring quality will be greatly affected.This paper analyzes the synchronization problem in the process of panoramic synthesis,improves the synchronization rate of panoramic image synthesis through cache mechanism and frame alignment,analyzes the spatial position relationship between each local panorama and specific browsing area in panoramic video,and uses multi-resolution method to quickly extract the local sensitive area in panorama.The difference in efficiency between calculating panoramic image directly and using look-up table to calculate projection image is contrasted.The computational complexity of image projection can be effectively reduced by the method of look-up table.

关 键 词：全景视频 多分辨快速浏览 查找表 数据提取 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]