Detection of Oil Slick Signatures in SAR Images by Fusion of Hysteresis Thresholding Responses Thomas. F.N. Kanaaa,b,c, E. Tonyea, G. Mercierb

A new method is proposed in this paper to de- tect oil slick signatures in oceanographic SAR images. This method is based on directional behavioural oil slick in the sea surface. Therefore, directional hysteresis thresholding re- sponses are first computed in order to bring to the fore dark spots, and increase pixels connexity in each Freeman direc- tion. Those responses are then merged with the help of a Con- text Independent Constant Behaviour (CICB) operator. The proposed method is tested on ERS SAR amplitude images of Mediterranean and Atlantic seas. The obtained results are promising and show a good qualitative detection.