Low Bit Rate Underwater Video Image Compression and Coding Method Based on Wavelet Decomposition  

作　　者：Yonggang He Xiongzhu Bu Ming Jiang Maojun Fan 

机构地区：[1]Nanjing University of Science&Technology,Nanjing 210094,China [2]The Third Research Institute of China Electronics Technology Corporation,Beijing 100015,China

出　　处：《China Communications》2020年第9期210-219,共10页中国通信（英文版）

摘　　要：In view of the limited bandwidth of underwater video image transmission,a low bit rate underwater video compression coding method is proposed.Based on the preprocessing process of wavelet transform and coefficient down-sampling,the visual redundancy of underwater image is removed and the computational coefficients and coding bits are reduced.At the same time,combined with multi-level wavelet decomposition,inter frame motion compensation,entropy coding and other methods,according to the characteristics of different types of frame image data,reduce the number of calculations and improve the coding efficiency.The experimental results show that the reconstructed image quality can meet the visual requirements,and the average compression ratio of underwater video can meet the requirements of underwater acoustic channel transmission rate.

关 键 词：low bit rate DOWN-SAMPLING wavelet decomposition underwater video coding 

分 类 号：TN929.3[电子电信—通信与信息系统] TN919.81[电子电信—信息与通信工程]