测绘通报 ›› 2018, Vol. 0 ›› Issue (8): 51-55.doi: 10.13474/j.cnki.11-2246.2018.0244

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A Comprehensive Processing Method for Side-scan Sonar Image De-noising and Equalization

WANG Xiao1, GUO Jun2, ZHU Bangyan3, WANG Aixue4, QIN Tiantian5   

  1. 1. School of Geomatics and Marine Information, Huaihai Institute of Technology, Lianyungang 222000, China;
    2. Guangzhou Marine Geological Survey Bureau(GMGSB), Guangzhou 510075, China;
    3. SAR/InSAR Engineering Applications Laboratory(SEAL), Nanjing Institute of Surveying, Mapping and Geotechnical Investigation, Co. Ltd., Nanjing 210019, China;
    4. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
    5. Kenli Land and Resources Bureau, Dongying 257500, China
  • Received:2017-09-25 Online:2018-08-25 Published:2018-08-30

Abstract: In the measurement process of side scan sonar (SSS),it is easily affected by other operating vessels and the factors such as ship speed,wake flow,gain parameter settings.This results in the image influenced by a variety of noise and radiometric distortion.The traditional method is difficult to effectively filter out it,and it is seriously affecting the seabed target recognition for SSS image.According to the characteristics of the SSS image,a novel comprehensive processing method of de-noising and equalization for SSS image is proposed.Compared with the traditional method,the entropy value of the image is reduced and the peak signal to noise ratio (PSNR) is increased,the shape of the seabed target is effectively preserved,and the high-quality acquisition of the SSS image is realized.

Key words: side scan sonar image, entropy, peak signal to noise ratio, de-noising, equalization

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