使用局部视觉显著分析的红外图像增强  

Infrared image enhancement using visual saliency analysis within local window

作　　者：马琼 李通 赵巨峰[1] 崔光茫 MA Qiong;LI Tong;ZHAO Jufeng;CUI Guangmang(Zhejiang Provincial Key Lab of Equipment Electronics,School of Electronics and Information,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]杭州电子科技大学电子信息学院浙江省装备电子研究重点实验室,浙江杭州310018

出　　处：《光学技术》2021年第5期601-607,共7页Optical Technique

基　　金：浙江省基础公益研究计划项目(LGF20F050003);国家自然科学基金项目(61805063);浙江省科协“育才工程”项目(SKX201901);国家级大学生创新创业基金项目(202010336008)。

摘　　要：红外增强是提升红外成像质量、凸显目标信息的有效手段之一。利用在局部窗口内计算视觉显著图来帮助实现红外图像的增强。利用局部空间区域内的中心-周围像素灰度加权距离法衡量显著性,由此获取显著图来表征模拟人眼以赋予不同像素区域的权重;结合视觉显著图的提取,在此基础上实现红外图像的增强;选取几组红外图像进行实验,结合主客观评价对多种增强方法进行评估。实验结果表明,与其他方法相比,所提方法的结果具有更好地视觉效果,能凸显图像细节即目标信息,能有效实现目标与背景的对比增强。Infrared enhancement is one of the effective methods to improve the quality of infrared imaging and highlight target information.The visual saliency map is calculated in a local window to help achieve the enhancement of the infrared image.Firstly,saliency is measured using center-surrounding pixel gray weight distance method within a local image region.Secondly,saliency map is obtained to simulate human visual system to assign weights to different pixel areas.Finally,infrared image enhancement is achieved based on saliency map extraction.Several sets of infrared images are selected for experiments,and both subjective and objective evaluation methods are adopted to evaluate multiple enhancement methods.Compared with other methods,the experimental results show that the results of the proposed method has better visual effects,can highlight the details,especially the target information,and can effectively achieve contrast enhancement between the target and the background.

关 键 词：几何光学(成像光学) 图像增强 视觉显著 目标区域 图像质量评价 

分 类 号：TN911.73[电子电信—通信与信息系统] TP391.4[电子电信—信息与通信工程]