Effects > Blur > Edge Preserving Smooth
Edge Preserving Smooth
The Edge Preserving Smooth filter allows you to smoothen the image without the loss of edge detail. This filter is useful for creating special effects and for removing noise or graininess.
1. Choose Effects > Blur > Edge Preserving Smooth
2. Use the following options:
 Radius (px)
Determines the number of pixels surrounding the pixel that affect the blurring. The greater the value, the more obvious the blurring.

Min = 5, Max = 200, Default = 20.
 Threshold
Use this option to control how much the tonal values of neighboring pixels must diverge from the center pixel value before being part of the blur. Pixels with tonal value differences less than the Threshold value are excluded from the blur.

Min = 0, Max = 100, Default = 20.
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Related Information
Effects > Edge
Effects > Edge > Sobel
Effects > Edge > Laplace
Effects > Edge > Canny
Effects > Edge > Outline
Effects > Edge > Contour
Effects > Edge > Glowing Edges
Effects > 3D Effects > Bevel Edges
Effects > Stylize > Smooth
Adjust > Add / Remove Noise > Edge Preserving Smooth
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