3.13. Tileable Blur

3.13. Tileable Blur
	3. Oskärpefilter

3.13.1. Översikt

Figur 17.34. Example for the ”Tileable” filter

Original

Filter ”Tileable Blur” applied

Tileable Blur is actually implemented by a Script-Fu script that invokes the Gaussian blur plug-in.

This filter is used to soften tile seams in images used in tiled backgrounds. It does this by blending and blurring the boundary between images that will be next to each other after tiling.

	Tips
If you want to treat only images borders, you can't apply filter to the whole image. The solution to get the wanted effect is as follows: Duplicate layer (Layer → Duplicate Layers) and select it to work on it. Apply ”Tileable Blur” filter with a 20 pixels radius to this layer. Select all (Ctrl+A) and reduce selection (Selection → Shrink) to create a border with the wanted width. Give a feathered border to the selection by using Selection → Feather. Delete selection with Ctrl+K. Merge layers with Layer → Merge down.

Tips

If you want to treat only images borders, you can't apply filter to the whole image. The solution to get the wanted effect is as follows:

Duplicate layer (Layer → Duplicate Layers) and select it to work on it.
Apply ”Tileable Blur” filter with a 20 pixels radius to this layer.
Select all (Ctrl+A) and reduce selection (Selection → Shrink) to create a border with the wanted width.
Give a feathered border to the selection by using Selection → Feather.
Delete selection with Ctrl+K.
Merge layers with Layer → Merge down.

3.13.2. Activating the Filter

This filter is found in the main menu under Filters → Blur → Tileable Blur….

3.13.3. Alternativ

Figur 17.35. ”Tileable Blur” filter options

Radius

The bigger the radius, the more marked is the blur. By selecting Horizontal and Vertical, you can make the horizontal and vertical borders tileable.

Blur vertically, Blur horizontally

These options are self-explanatory.

Blur type

Choose the algorithm to be applied:

IIR: for photographic or scanned images.
RLE: for computer-generated images.