舰船视频监控数据压缩算法的设计

Design of data compression algorithms for ship video surveillance

数据压缩算法是舰船监控视频系统中的重要技术,直接影响舰船监控视频传输的实时性,针对当前舰船监控视频数据压缩算法存在压缩比小、信息丢失严重等不足,设计了基于剪切波变换和压缩感知算法的舰船监控视频数据压缩算法。首先对当前舰船监控视频数据压缩算法进行研究,找到各种算法存在的局限性,然后对舰船监控视频原始数据进行去噪处理,减少噪声传输所占的通信资源,并采用剪切波变换对舰船监控视频数据进行分解,最后采用压缩感知算法对剪切波变换系数进行压缩处理,减少舰船监控视频数据规模,并通过剪切波反变换对舰船监控视频数据进行重构。与对比舰船监控视频数据压缩算法的仿真对比测试结果表明,本文算法能够在保持舰船监控视频数据原始信息的基础上,对舰船监控视频数据进行了最大限度的压缩,而且舰船监控视频数据压缩速度快,获得了对比算法更加理想的舰船监控视频数据压缩结果。

Data compression algorithm is an important technology of ship surveillance video system,which directly affects the real-time transmission of ship surveillance video.Aiming at the shortcomings of current ship surveillance video data compression algorithm,such as low compression ratio and serious loss of original information,a ship surveillance video data compression algorithm based on shear wave transform and compressed sensing algorithm is designed.Firstly,the current compression algorithms of ship surveillance video data are studied,and the limitations of various algorithms are found.Then,the original data of ship surveillance video are denoised to reduce the communication resources occupied by noise transmission.Then,the data of ship surveillance video are decomposed by shear wave transform.Finally,compression sensing algorithm is used to compress the shear wave transform coefficients.The scale of ship surveillance video data is reduced,and the ship surveillance video data is reconstructed by inverse shear wave transform.Compared with the simulation and test of the ship surveillance video data compression algorithm,this algorithm can compress the ship surveillance video data to the maximum extent on the basis of keeping the original information of the ship surveillance video data.Moreover,the speed of the ship surveillance video data compression is fast,and the better result of the ship surveillance video data compression is obtained.