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Thickening
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Thickening
Ribbon: Raster – Filters > 
Thickening
Menu: Raster – Filters > Thickening…
Command line: THICKER
This functionality is available only in the Raster module.
This filter thickens raster objects by a specified number of pixels in a specified direction - horizontal, vertical, or simultaneously in all directions.
The pictures below show how thickening works when all directions are selected. On the left there is the original raster image, and on the right there is the result of applying the filter after three passes.
Thickening filtration in all directions
The figure below illustrates how the Thickening filter works when only the vertical direction of the thickening is selected. On the left there is the original raster image, on the right there is the result of applying the Thickening filter after three passes.
Vertical thickening filtration
Select the images to be processed and run the command.
Select the required direction of thickening – Horizontal, Vertical or All (horizontal, vertical or diagonal).
Click Apply.