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A Novel Algorithm for Ship Detection in SAR Imagery Based on the Wavelet Transform
Tello Alonso, Mª Victoria; López Martínez, Carlos; Mallorquí Franquet, Jordi Joan
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
Carrying out an effective control of fishing activities is essential to guarantee a sustainable exploitation of sea resources. Nevertheless, as the regulated areas are extended, they are difficult and time consuming to monitor by means of traditional reconnaissance methods such as planes and patrol vessels. On the contrary, satellite-based synthetic aperture radar (SAR) provides a powerful surveillance capability allowing the observation of broad expanses, independently from weather effects and from the day and night cycle. Unfortunately, the automatic interpretation of SAR images is often complicated, even though undetected targets are sometimes visible by eye. Attending to these particular circumstances, a novel approach for ship detection is proposed based on the analysis of SAR images by means of the discrete wavelet transform. The exposed method takes advantage of the difference of statistical behavior among the ships and the surrounding sea, interpreting the information through the wavelet coefficients in order to provide a more reliable detection. The analysis of the detection performance over both simulated and real images confirms the robustness of the proposed algorithm.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
Radar--Equipment and supplies
Hydrology Research
Oceanography--Research
geophysical signal processing
image recognition
object detection
oceanographic techniques
radar imaging
remote sensing by radar
ships
surveillance
synthetic aperture radar
wavelet transforms
SAR imagery
fishing activities
multiresolution analysis
sea resources exploitation
ship detection
surveillance capability
synthetic aperture radar
wavelet coefficients
wavelet transform
Radar
Hidrologia -- Aparells i instruments
Oceanografia -- Aparells i instruments
Artículo
IEEE
         

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