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 engine of the Processing Toolbox, type Linesegment and select LineSegmentDetection under Feature Extraction of OTB.
• Under the Parameters tab, select a multiband file as input layer.

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