Sobel filter
From AWF-Wiki
(Difference between revisions)
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* In the search engine of the Processing Toolbox, type '''Sobel''' and select '''EdgeExtraction (sobel)''' under Feature Extraction of the Orfeo Toolbox. | * In the search engine of the Processing Toolbox, type '''Sobel''' and select '''EdgeExtraction (sobel)''' under Feature Extraction of the Orfeo Toolbox. | ||
* Under the Parameters tab, select a single band or a multiband file as input layer. | * Under the Parameters tab, select a single band or a multiband file as input layer. | ||
| − | * Select | + | * Select a specific band number in case of a multiband file. |
| − | * Select ''' | + | * Select '''sobel''' as Smoothing Type. |
| − | + | [[File:Qgis_edge_sobel.png|400px]] | |
| − | [[File: | + | |
[[category:Spatial Filtering]] | [[category:Spatial Filtering]] | ||
Revision as of 20:55, 18 November 2017
The Sobel filter creates an image emphasising edges.
- In the search engine of the Processing Toolbox, type Sobel and select EdgeExtraction (sobel) under Feature Extraction of the Orfeo Toolbox.
- Under the Parameters tab, select a single band or a multiband file as input layer.
- Select a specific band number in case of a multiband file.
- Select sobel as Smoothing Type.
