摘要： 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。

关键词: 三维声纳成像, 手持式, 嵌入式系统, 实时性, OpenGL ES 2.0标准

Abstract: 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.

Key words: 3D sonar imaging, hand-held, embedded system, real-time, OpenGL ES 2.0 standard

中图分类号: 

• TP391