| Multifractal filtering method for extraction of ocean eddies from remotely sensed imagery |
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| 作者姓名： | GE Yong DU Yunyan CHENG Qiuming LI Ce |
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| 作者单位： | GE Yong~ 1*，DU Yunyan~ 1，CHENG Qiuming~ 2，3，LI Ce~ 1 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 3. State Key Laboratory of Geo-Processes and Mineral Resources，China University of Geosciences，Beijing 100083，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金;中国科学院知识创新工程项目 |
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| 摘 要： | 1 IntroductionCurrently, the ocean eddy plays an important rolein energy flowand matter exchange in ocean. The ex-traction and analysisof the oceaneddave beeninves-tigated bylots of people in pastdecades. Currentmeth-ods to deal with the ocean eddy include static and dy-namic methods. The static method is to analyze indi-rectly ocean eddies using the spatial feature distribu-tion, change, growthand decline of the watermass (Suet al., 1996; Guo et al., 1995; Guo and Ge, 1997);the dynamic meth…
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| 关 键 词： | remotely sensed imagery extraction of ocean eddies multifractal filtering |
| 收稿时间： | 2006/2/12 0:00:00 |
| 修稿时间： | 2006/6/28 0:00:00 |
Multifractal filtering method for extraction of ocean eddies from remotely sensed imagery |
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| GE Yong,DU Yunyan,CHENG Qiuming,LI Ce.Multifractal filtering method for extraction of ocean eddies from remotely sensed imagery[J].Acta Oceanologica Sinica,2006,25(5):27-38. |
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| Authors: | GE Yong DU Yunyan CHENG Qiuming and LI Ce |
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| Institution: | State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences & Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences & Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;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, Beijing 100083, China;State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences & Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | Traditional methods of extracting the ocean wave eddy information from remotely sensed imagery mainly use the edge detection technology such as Canny and Hough operators. However, due to the complexities of ocean eddies and image itself, it is sometimes difficult to successfully detect ocean eddies using these methods. A multifractal filtering technology is proposed for extraction of ocean eddies and demonstrated using NASA MODIS,SeaWiFS and NOAA satellite data set in the typical area, such as ocean west boundary current. Results showed that the new method has a superior performance over the traditional methods. |
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| Keywords: | remotely sensed imagery extraction of ocean eddies multifractal filtering |
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