Automated extraction of coastline from satellite imagery

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Presentation transcript:

Automated extraction of coastline from satellite imagery H.Liu and K.C. Jezek

Introduction Why? Autonomous Navigation Geographical Exploration Coastal Erosion Monitoring and Modelling Coastal Resource Inventory and Management. Boundary Detection Problem Edge Detection Image Segmentation

Methodology Overview Pre-segmentation Segmentation Post-segmentation

Pre-segmentation Processing Algorithms Noise Removal Edge Enhancement

Image Segmentation Local Thresholds Bimodal Gaussian Curve

Image Segmentation PDF Lenvenberg-Margardt method Canny Edge Detector

Image Segmentation

Image Segmentation Where to start? Solve the quadratic

Post Segmentation Processing Region Grouping and Labelling Delineating Vectorization

Application Example Antarctic Imaging Campaign in 1997 SAR Images

Discussion and Conclusions Image Quality Improvements Liu & Jezek 2004