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

被引：4
|
作者：
Yonggang He [1 ,2 ]
Xiongzhu Bu [1 ]
Ming Jiang [2 ]
Maojun Fan [2 ]
机构：
[1] Nanjing University of Science & Technology
[2] The Third Research Institute of China Electronics Technology Corporation
来源：
中国通信 | 2020年 / 17卷 / 09期
关键词：
D O I：
暂无
中图分类号：
TN929.3 [水下通信（声纳通信）]; TN919.81 [图像编码];
学科分类号：
0810 ; 081001 ; 082403 ;
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.
引用
收藏
页码：210 / 219
页数：10
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