手持式三维声纳实时成像系统设计

摘要

For traditional 3D sonar imaging system has the problems of low integration and poor real-time,this paper proposes a design for imaging system of real-time hand-held 3D sonar, which uses DM8127 to realize sonar image processing. To build highly accurate and real-time 3D modeling,this system uses the following methods:pre-generation of coordinate conversion array,grid construction with self-adaptive threshold,and parallel processing design,and 3D sonar image rending and display with OpenGL ES 2 . 0 . Experimental results show that this system can clearly display the underwater target topography,and the image processing speed can reach up to 25 frames per second.%针对传统三维声纳成像系统集成度低、实时性差的问题,提出一种手持式三维声纳实时成像系统设计方案。利用DM8127实现声纳图像的处理,通过坐标转换数组预生成、自适应阈值的网格构建等方法实现实时高精度的三维建模,同时采用多线程并行处理架构改善网格构建时的系统处理性能,降低处理时延,并利用OpenGL ES 2.0实现三维声纳图像的渲染和显示。实验结果证明,该系统能清晰显示水下探测目标,且实时成像速率高达25帧/s,满足系统实时性要求。