针对水声图像特点采用了DC系数直接编码。
DC coefficient encoding employs direct encoding in accordance with characteristics of underwater image.
论文对高分辨率成像声纳的两个关键技术：波束形成技术和水声图像处理技术进行了研究。
In this thesis, two key-techniques of high-resolution imaging sonar are studied: beam-forming and acoustical image processing.
针对水声信道高噪、强干扰、传输时延大、带宽很窄等特点，本文基于位平面对水声图像传输进行了研究。
Comprehensively considering the image compression and robust transmission, underwater image progressive transmission based on bit planes was put forward in this paper.
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