Line segment extraction

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[[File:Qgis_edge_line.png|700px]]
 
[[File:Qgis_edge_line.png|700px]]
 
{| class="wikitable"
 
{| class="wikitable"
|style="border: 0pt" | [[file:Qgis_goe_line.png|thumb|left|450px|'''Figure A:''' Input image: pansharpend Sentinel-2 composite (RGB= B7,B6,B5)  overlaid with detected line vectors (red]]
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|style="border: 0pt" | [[file:Qgis_goe_line.png|thumb|left|700px|'''Figure A:''' Input image: pansharpend Sentinel-2 composite (RGB= B7,B6,B5)  overlaid with detected line vectors (red]]
 
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[[category:Spatial Filtering]]
 
[[category:Spatial Filtering]]

Revision as of 12:51, 20 November 2017

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.

Qgis edge line.png

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