Title :
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
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;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343176
