Line segment extraction

The Line Segment Detection application (LSD) detects locally straight contours in an image and was published by Grompone et al. (2012). It is based on a spatial edge extraction filter.

• In the Search box of the Windows Start menu type OSGeo4W Shell. You should be able to open the shell by clicking on it.
• Type into the shell: otbgui_LineSegementDetection. Select a multiband input file. Parameter tuning is not necessary.

Figure A: Input image: pansharpend Sentinel-2 composite (RGB= B7,B6,B5) overlaid with detected line vectors (red