Research on the eddy detection method based on chlorophyll concentration distribution

Author

Hong Yu ; Linchun Kang ; Mingyuan He

Author_Institution

Inst. of Meteorol., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

4

fYear

2011

fDate

15-17 Oct. 2011

Firstpage

1958

Lastpage

1962

Abstract

The automatic detection method for marine mesoscale eddy based on MODIS chlorophyll concentration products has been discussed, in which both wavelet analysis and Hough transform are used. Wavelet can obviously reduce the image noise and then benefit the effective edge detection. The automatic circle fitting of the eddy has been carried out by Hough transform after edge detection. The results show that the method proposed here has good effect on the cold eddy detection with a good consistency to the eddy area revealed by altimeter Sea Level Abnormal (SLA) data, whereas it has unsatisfactory effect on the warm eddy, for which further research is still needed on the edge threshold value.

Keywords

Hough transforms; edge detection; geophysical image processing; sea level; wavelet transforms; Hough transform; MODIS chlorophyll concentration products; automatic circle fitting; automatic detection method; chlorophyll concentration distribution; eddy detection method; edge detection; image noise; marine mesoscale eddy; sea level abnormal data; wavelet analysis; Image edge detection; Ocean temperature; Remote sensing; Sea surface; Wavelet transforms; Hough transform; MODIS; chlorophyll concentration; mesoscale eddy; wavelet;

fLanguage

English

Publisher

ieee

Conference_Titel

Image and Signal Processing (CISP), 2011 4th International Congress on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-9304-3

Type

conf

DOI

10.1109/CISP.2011.6100648

Filename

6100648