Line segment extraction

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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.

Qgis otb lineSegment.png

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