国土资源遥感2013，Vol.25Issue(3)：56-60,5.DOI:10.6046/gtzyyg.2013.03.10
面向震害信息提取的多源遥感图像自动配准
Automatic registration of multi-source images for extraction of earthquake damage information
摘要
Abstract
In order to extract the information of earthquake damage from multi-source images,the authors explored a high-accuracy algorithm of automatic image registration.Firstly,It uses Moravec operator to extract feature points and uses random sample consensus (random sample consensus,RANSAC)algorithm to reject mismatching points.Secondly,it makes a log-polar transformation according to the feature points to obtain the rotated angles and the scaled factors of the reference image and the image to be registered.After compensating coefficients of the rotated angles and the scaled factors,it uses an algorithm of sub-pixel level and phase-correlated to calculate the offset between the images and uses the interpolation algorithm to resample the registration image.At last,the images before and after the earthquake are processed as classification targets.They are used to classify and extract the earthquake damage information based on the features.The results show that the designed algorithm in this paper is of the high robustness and registration precision,and is more suitable to the registration of multi-source remote sensing images.The information of earthquake damage can be better applied to the assessment of the earthquake damage than before.关键词
对数极坐标变换/相位相关/图像配准/震害信息提取Key words
logarithmic polar coordinate transformation/ phase correlation/ image registration/ extraction of earthquake damage information分类
信息技术与安全科学引用本文复制引用
杨德贺,陈宜金,杨溪,吕京国,张子昕,张帅..面向震害信息提取的多源遥感图像自动配准[J].国土资源遥感,2013,25(3):56-60,5.基金项目
国家863计划项目(编号:2010AA012304)和国家测绘地理信息局重点实验室开放课题"现代城市测绘"(编号:20111211N)共同资助. （编号:2010AA012304）
