多重分形方法在涡旋遥感信息处理提取中的应用研究  

Multifractal filtering method for extraction of ocean eddies from remotely sensed imagery

作　　者：葛咏[1] 杜云艳 成秋明[2] 李策[1] 

机构地区：[1]中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室,北京100101 [2]约克大学地球空间科学与工程系

出　　处：《海洋学报》2007年第5期40-47,共8页

基　　金：国家"973"计划资助项目(2006CB701305);国家自然科学基金资助项目(40201033);中国科学院创新课题资助项目(V36400)

摘　　要：目前提取遥感影像中的涡旋信息主要用边缘探测技术,例如Canny算子和Hough算子等,然而由于涡旋信息和遥感影像本身的复杂性和模糊性,用传统的方法不能取得理想的提取结果.基于多重分形技术,利用海洋涡旋信息的物理特征时空形态的自相似性来提取涡旋,用NASA MODIS,SeaWiFS和NOAA在典型海区如边界流的卫星影像进行试验,研究结果表明,用多重分形方法获取的涡旋信息非常有利于对海洋涡旋的深刻认识和分析研究.Traditional methods to extract ocean wave eddy information from remotely sensed imagery mainly use the edge detection technology such as Canny and Hough operators.However,owing to the complexities of ocean eddies and images themselves,it is sometimes difficult to successfully detect ocean eddies using these methods.A multifractal filtering technology is proposed for the extraction of ocean eddies and demonstrated using NASA MODIS,SeaWiFS and NOAA satellite data set in the typical area,such as western boundary current.Results are demonstrated that the new method has a superior performance over the traditional methods.

关 键 词：遥感影像 涡旋提取 多重分形 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]