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Contour
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Contour
Ribbon: Raster – Filters >
4 Connected Contour
Ribbon: Raster – Filters >
8 Connected Contour
Menu: Raster – Filters – Contour >
4-coupling
Menu: Raster – Filters – Contour >
8-coupling
Command line: CONTOUR4
Command line: CONTOUR8
This functionality is available only in the Raster module.
Contour filters turn filled raster areas into single-pixel contours. In a four-connected contour, adjacent pixels can only be joined by the sides, in an eight-connected contour, contiguity is also allowed at the corners, so such contours look thinner.
The images below show the results of applying contour filters.
Parts of contours obtained with four-connected and eight-connected filtering
Select the images to be processed and run the command.