侧扫声呐图像辐射畸变综合改正方法研究  

A Comprehensive Radiometric Distortion Correction Method for Side-Scan Sonar Image

作　　者：王晓 吴清海 王爱学[2] WANG Xiao;WU Qinghai;WANG Aixue(School of Geomatics and Marine Information,Huaihai Institute of Technology,Lianyungang 222000,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China)

机构地区：[1]淮海工学院测绘与海洋信息学院,江苏省连云港市苍梧路59号222000 [2]武汉大学测绘学院,武汉市珞喻路129号430079

出　　处：《大地测量与地球动力学》2018年第11期1174-1179,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41004003;41506106);连云港市科技项目(SH1506;SH1608);江苏省海洋科学与技术优势学科建设工程(5511201401X)~~

摘　　要：针对现有侧扫声呐辐射畸变改正方法难以实现复杂底质及作业环境下图像精细获取的问题,基于侧扫声呐图像辐射畸变诱因,提出侧扫声呐图像辐射畸变综合改正方法。该方法在胶州湾水域得到应用,消除了海况差、底质变化明显及人为增益参数调整等问题的影响,实现了复杂海洋环境及噪声影响下图像的高质量获取。与传统统计方法比较表明,综合法处理后图像熵值减小、峰值信噪比增加,图像质量得到有效提高。The traditional radiometric distortion correction methods for side scan sonar(SSS)image make it difficult to resolve the problem of fine image acquisition in complex sea bottom sediment and operating environment.Based on radiometric distortion of SSS image,a comprehensive radiometric distortion correction method is proposed.This method has been applied in Jiaozhou bay,eliminating the influence of marine environment,obvious variation of sea-bottom sediment and adjustment of time vary gain(TVG)parameters,realized the high-quality acquisition of images under complex marine environment and noise.Compared with the traditional statistical method,the entropy value of the image is reduced and the peak signal to noise ratio(PSNR)is increased,which indicates that the SSS image quality has been improved effectively.

关 键 词：侧扫声呐图像 辐射畸变综合改正 熵 峰值信噪比 

分 类 号：P229[天文地球—大地测量学与测量工程]