Questions tagged [edge-detection]

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Filter long shaped polygons

I have a PostGIS database with a layer of 60k polygons, some of them erroneous. These erroneous polygons are extremely narrow, long shaped. Maybe I can best describe them as 'Needle' shaped polygons. ...
GIStrees's user avatar
  • 109
3 votes
1 answer
396 views

Detect if features are next to each other but not overlapping using Turf.js

I would like to detect if two features are only sharing one or more edges but do not overlap using Turf.js. What I have tried so far is using all the relevant boolean functions of turf. Unfortunately ...
Bernd Loigge's user avatar
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1 answer
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How to compute edges intensity (edgeness factor) as texture feature

I am trying to extract texture features from an image. I am interested in extracting the Mean and Standard Deviation of the edge intensity (edgeness factor). These texture measures were described by ...
sermomon's user avatar
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1 vote
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Distance to forest edge in R

I have a raster layer consisting 41 forest polygons and would like to calculate the distance of forest pixels to the edge within each forest polygon. I tried the code below but the result looks like ...
Donald 's user avatar
1 vote
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133 views

Edge detection from Google Earth basemap in QGIS

I would like to detect boundaries of agricultural fields for 70 different polygons spread out across a country. Is it possible to run an edge detection algorithm using the google earth (or equivalent) ...
Rachel's user avatar
  • 93
2 votes
0 answers
185 views

Remove scene edge pixel error in annual composites in GEE

The median reducer over the cloud masked image collection is unable to remove the edge pixel error at a few scenes. Although the cloudmasking function has the code to remove such edge pixels not ...
Rakesh Kumar's user avatar
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1 answer
922 views

Apply Canny edge filter on raster failes with scikit-image

I have raster with one band and I would like to do edge detection with Canny edge filter. This is my raster: I have opened it with rasterio and covert it into array : img=srs.open("raster.tif&...
ReutKeller's user avatar
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