多重分形方法在涡旋遥感信息处理提取中的应用研究

葛咏; 杜云艳; 成秋明; 李策

多重分形方法在涡旋遥感信息处理提取中的应用研究

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, 多伦多, M3J1P3;中国地质大学, 地质过程与矿产资源评价重点实验室, 湖北, 武汉, 430074

基金项目: 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)

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出版历程
- 收稿日期: 2005-12-01
- 修回日期: 2007-03-16

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

1.
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences & Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2.
Department of Earth and Space Science and Engineering, York University, Toronto, M3J 1P3, Canada;State Key Laboratory of Geo-processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China

摘要

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,Sea WiFS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.
- 遥感影像 /
- 涡旋提取 /
- 多重分形
Abstract: 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 imagest hemselves, it is sometimes difficult to successfully detect ocean eddiesusing these methods.A multifractal filtering technology is proposed for the extraction of ocean eddies and demonst rated using NASA MODIS, SeaWiFS and NOAA satellite data set in the typical area, such as western boundary current.Results are demonst rated that the new method has a superior performance over the traditional methods.
- remotely sensed imagery /
- extraction of ocean eddies /
- multifractal filtering

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