Image Enhancement for Sonar Images Based on Surfacelet and Multi-scale Retinex
Received date: 2011-03-26
Revised date: 2012-03-21
Online published: 2012-09-25
Due to complicated underwater channels and various interferences, sonar image resolution is low,leading to difficulties in identifying edge details. Many enhancement algorithms can improve image resolution without de-noising. To this end, the paper proposes an improved enhancement algorithm, which first performs de-noising using surfacelet transform with adaptive threshold, and then carries out multi-scale retinex enhancement.
Simulation results show that the proposed algorithm has advantages in preservation of edge details color information. It helps subsequent image processing.
FU Qiang1, LI Yi-bing1, TANG Chun-rui2 . Image Enhancement for Sonar Images Based on Surfacelet and Multi-scale Retinex[J]. Journal of Applied Sciences, 2012 , 30(5) : 505 -510 . DOI: 10.3969/j.issn.0255-8297.2012.05.011
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