4.7. Symmetric Nearest Neighbor

17.45. ábra - Example for the „Symmetric Nearest Neighbor” filter

Left: original. Right: filter applied.

This filter blurs the image preserving edges. It is very effective in noise reduction maintaining sharp edges.

It works comparing each pixel to its neighboring pixels and to 1 or 2 pairs of symmetric pixels around the center.

4 symmetric pairs

This filter is found in the main menu under Filters → Enhance → Symmetric Nearest Neighbor….

17.46. ábra - „Symmetric Nearest neighbor” filter options

Presets, „Input Type”, Clipping, Blending Options, Preview, Merge filter, Split view

	Megjegyzés
	These options are described in 2. szakasz - Common Features.

Radius

Radius, in pixels, of square pixel region. Width and height of this region are radius*2+1:

Pairs

You can select 1 or 2 pairs: higher number preserves more acute features.