基于G-MSRCR算法的水下图像增强研究  

Research on underwater image enhancement based on G-MSRCR algorithm

作　　者：刘飞跃 沈靖夫 柳淳 张元良 LIU Feiyue;SHEN Jingfu;LIU Chun;ZHANG Yuanliang(School of Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;School of Mechanical Engineering,Jiangsu Ocean University,Lianyungang 222005,China)

机构地区：[1]江苏海洋大学海洋工程学院,江苏连云港222005 [2]江苏海洋大学机械工程学院,江苏连云港222005

出　　处：《舰船科学技术》2024年第17期162-167,共6页Ship Science and Technology

基　　金：国家自然科学基金委员会项目(62271236)。

摘　　要：针对水下采集的图像存在色偏严重、对比度偏低的现象,本文提出一种基于自适应直方图拉伸和改进MSRCR的水下图像增强方法。该方法主要分为以下几个步骤:首先采用白平衡调整图像的颜色温度尽可能地消除色偏,其次通过设计的自适应HE分段函数对图像进行进一步的色彩平衡处理从而增强图像的视觉效果,然后使用增加了对比度增强的MSRCR对图像进行色彩恢复和对比度增强,最后通过新的AGCWD对图像进行对比度调整从而使最终获得的图像色彩平衡,明暗分明。为了证明本文方法的有效性选取了水下真实图像进行增强处理,并且选取最近几年的算法进行参考对比,实验结果证明本文算法对于水下色偏严重、对比度不高的图像具有很好的增强效果,增强后的图像质量增加、色偏减少、清晰度更高。Aiming at the phenomenon of severe color cast and low contrast in images collected underwater,this paper proposes a method for underwater image enhancement based on adaptive histogram stretching and improved MSRCR.The method is mainly divided into the following steps:first,the white balance is used to adjust the color temperature of the image to eliminate the color cast as much as possible,secondly,the image is further color balance processing through the designed adaptive HE segmentation function to enhance the visual effect of the image,and then the MSRCR with increased contrast enhancement is used to restore the color and contrast enhancement of the image,and finally the contrast adjustment of the image is adjusted by the new AGCWD so that the final image color balance is clearly distinguished.In order to prove the effectiveness of the proposed method,the underwater real image is selected for enhancement processing,and the algorithm in recent years is selected for reference comparison,and the experimental results show that the proposed algorithm has a good enhancement effect for images with severe underwater color cast and low contrast,and the enhanced image quality is increased,the color cast is reduced and the clarity is higher.

关 键 词：水下图像增强 MSRCR 白平衡 AGCWD 颜色校正 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]