Inversion of wavelet coefficients in oil spills detection in radar images for environment risk reduction in Adriatic Sea

Problem of oil spills detection is involvement of dark colors. Dark colors are close to 0 and cannot be detected by image differencing. The paper presents an idea to overcome the detection problem for oil spills. By using DWT, the idea is to remove parts of the signal which represent main structures such as coastlines and increase noise. Wavelet analysis in real time, for oil spills, has been applied to an inverted image. Then the so called frame differencing technique is applied. The benefits of using the proposed method is the reduction of risk for environment pollution, prevention of environment danger, tracking of pollution spread, and help in crisis management. The proposed method can be combined with VTS for narrow seas such as the Adriatic Sea.