欢迎来到天天文库
浏览记录
ID:54371479
大小:993.08 KB
页数:6页
时间:2020-04-30
《一种仿水下生物视觉的大坝裂缝图像增强算法.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、兴电子·激光第25卷第2期2014年2月Journalof0ptoelectronics·LaserVo1.25No.2February2014一种仿水下生物视觉的大坝裂缝图像增强算法范新南,顾丽萍,巫鹏,张卓,张学武,史朋飞(河海大学江苏省输配电装备技术重点实验室,江苏常州213022)摘要:针对水下大坝裂缝图像非均匀亮度、低信噪比(SNR)和低对比度等特点,提出了一种仿水下生物视觉的大坝裂缝图像增强算法。算法借鉴生物视觉亮度调节特性改善裂缝图像的亮度非均匀问题,并在模拟水下生物“鲎鱼”视觉的侧抑制增强机制机理的基础上,引入自适应的非对称窄条引导模型,对裂缝图像中的线性特征进行增强
2、。理论和实验结果表明,本文算法能够在有效抑制噪声的同时,对图像线性特征增强。关键词:大坝裂缝图像;仿生;侧抑制;非对称窄条;自适应中图分类号:TP391.4文献标识码:A文章编号:1005—0086(2014)02—0372—06AclamcrackimageenhancementalgorithmbasedonunderwaterbiologicalvisionFANXin-nan,GULi-ping,WUPeng,ZHANGZhuo,ZHANGXue-wu,SHIPeng-fei(JiangsuKeyLaboratoryofPowerTransmission&Distributi
3、onEquipmentTechnology。HohaiUniversity,Chang—zhou213022,China)Abstract:Inviewofthecharacteristicssuchasnon-uniformbrightness,lowsignaltonoiseratioaswellasthelowcontrastOftheunderwaterdamcrackimage,thispaperbringsupanoveldamcrackimageen—hancementalgorithm,whichadoptsthesimulationofunderwaterbiolo
4、gicalvision.、7Vthreferencetothebrightnessadjustmentcharacteristicsofthebiologicalvision,thisalgorithmalsoimprovesthenon-uni—formbrightness0funderwaterdamcrackimage.Furthermore。inordertoimprovethelowsigna1一to-noiseratioandsolvetheproblemoflOWcontrastofdamcrackimage,onthebasisof1ateralinhibitione
5、n—hancementmechanismofthe”horseshoecrabfish”,weintroducetheadaptiveasymmetricnarrowstripguidancemodels,whichcanhelptoenhancethelinearcharacteristicsofthecrackimage.Thetheoretica1andtheexperimentalresultsgotfromthispapershowthattheproposedalgorithmcansignificantlyelim-inatethenoisesoftheunderwat
6、erimage,andalsobetterimprovethedefinitionoftheimagefromthephysicalstandpoint.Andatthesametime,bystrengtheningtheedgesofcrackimageandenhancingthesubtlelinerstructuresofinterestinthecrackimage,thisalgorithmimprovesthecontrastoftheinterest—ingareas,whichisofgreatsignificanceforthesubsequentcrackfe
7、atureextractior~Keywords:damcrackimage;bionic;lateralinhibition;asymmetricalnarrowstick;adaptive物和水体的流动的影响,水下大坝裂缝图像具有1引言非均匀亮度、低信噪比(SNR)和低对比度等特点,大坝是水电工程主要设施之一lll。大坝结构使得裂缝特征提取变得极为困难,必须首先对其中,混凝土裂缝对大坝结构的耐久性有重要的影进行图像增强,增加图像的对比度,突出感兴趣的响
此文档下载收益归作者所有