Line segment extraction
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The Line Segment Detection application (LSD) detects locally straight contours in an image and was published by [http://www.ipol.im/pub/art/2012/gjmr-lsd/ Grompone et al. (2012)]. It is based on a spatial edge extraction filter. | The Line Segment Detection application (LSD) detects locally straight contours in an image and was published by [http://www.ipol.im/pub/art/2012/gjmr-lsd/ Grompone et al. (2012)]. It is based on a spatial edge extraction filter. | ||
| − | * In the | + | * 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. |
| − | [[File: | + | [[File:Qgis_otb_lineSegment.png|400px]] |
| + | |||
{| class="wikitable" | {| class="wikitable" | ||
| − | |style="border: 0pt" | [[file:Qgis_goe_line.png|thumb|left| | + | |style="border: 0pt" | [[file:Qgis_goe_line.png|thumb|left|700px|'''Figure A:''' Input image: Sentinel-2 composite (RGB= B7,B6,B5) overlaid with detected line vectors (red)]] |
|} | |} | ||
[[category:Spatial Filtering]] | [[category:Spatial Filtering]] | ||
Latest revision as of 16:40, 18 November 2018
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.
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