| ImageEn, unit iexUserInteractions |  | 
 
TIERetouchToolInteraction.SmoothRadius
 
Declaration
var SmoothRadius: Integer;
Description
Specify the radius of the "Symmetric Nearest Neighbour" smoothing filter (Min value: 1).
SNN smoothing is very effective at noise reduction, while preserving edges.
Original image:
 
Applying SymmetricNearestNeighbour(6):
 
For more information: 
SymmetricNearestNeighbour
Default: 6
// Remove noise from the image
ImageEnView1.RetouchTool.RetouchMode  := iermSmooth;
ImageEnView1.RetouchTool.SmoothRadius := 12;
ImageEnView1.MouseInteractGeneral     := [ miRetouchTool ];