A Modified ROEWA Method for Edge Detection in SAR Images

Author

Cheng-Li, Jia ; Xiao-guang, Zhou ; Ling-jun, Zhao ; Gang-yao, Kuang

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

The ROEWA (ratio of exponentially weighted averages) edge detector is developed by Roger Fjortoft. The operator has constant false alarm rates and outstanding localization performance, but does not offer how to calculate the direction of edge. This paper analyses the localization performance of the operator, and develops a method based on Gabor filter to calculate the direction of edge. The modified ROEWA operator is perfectly suited for linear structure extraction

Keywords

Gabor filters; edge detection; radar imaging; synthetic aperture radar; Gabor filter; SAR images; constant false alarm rate; linear structure extraction; localization performance; modified ROEWA edge detection; ratio-of-exponentially weighted average method; synthetic aperture radar; Airports; Application software; Detectors; Gabor filters; Image edge detection; Image processing; Large-scale systems; Object detection; Reflectivity; Synthetic aperture radar; Gabor filter; ROEWA; SAR image; edge detection; image processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343176

Filename

4148282