A compression method for navigation images transmitted by BDS-3
The significant improvement of BDS-3 short message communication capability provides users in navigation and other industries with the possibility of narrow-band non real-time image data transmission.According to the characteristics of BDS-3 short message,this paper designs a very low bit rate compression method of deep learning navigation image using generative countermeasure network which introduce a hyperprior to fuse encoder and decoder and establishes navigation image data sets covering different ship types,accident types and meteorological conditions for training and testing.The experimental results show that:compared with JPEG and JPEG2000 and bmshj2018,this method can maintain good visual characteristics under high compression rate,and can realize the transmission of 320 × 240 size images in a short message.The method has been verified on BDS-3 short message data transmission terminal and Beidou sorting platform,and has good application value in marine support and maritime management.
BDS-3 short messageimage compressiongenerate confrontation networknautical image data set
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