The document discusses an approach for extracting bridges from high-resolution panchromatic images using constrained Delaunay triangulation. It first segments rivers using texture analysis and morphological operations. It then extracts bridges along the medial axes of the rivers using constrained Delaunay triangulation. Experiments show the approach works well but building shadows and water swells sometimes cause false alarms. Future work will refine the river segmentation and use better vectorization algorithms.

1. Bridge Extraction based on Constrained Delaunay Triangulation Feng Gao Lei Hu Zhaofeng He

2. Bridge Extraction Panchromatic Image: High reolution provides detailed descriptions. Challenge: Bridges are surrounded by complex backgrounds.

11. Experiments Extensive experiments are performed on high resolution image gathered from Google earth. However, swells and building shadows cause many false alarms.

13. Acknowledgements Special thanks to Shewchuk for providing the Triangle program Special thanks to anonymous reviewers Special thanks to session chair and audience Thank you

14. Q&A