Median
Median
Use Median to suppress speckle noise while keeping key edges more stable than blur. It is useful for cleanup before edge detection or thresholding.
Availability
This node requires Pro.
Common uses
- Use blur before thresholding to smooth noisy masks.
- Use sharpen and highpass to recover or isolate detail bands.
Input ports
-
input -
Requires an image input signal.
Output ports
-
out -
Outputs a filtered image that preserves graph connectivity.
Parameters
| Parameter | Type | Default | Range or values |
|---|---|---|---|
| Radius | int | 1 | 1 to 5 |
Behavior
- Detail filters operate on neighboring pixels and are sensitive to resolution.
- Different blur and sharpen algorithms produce distinct edge behavior.
Common mistakes
- Large radii can wipe out fine structure.
- Repeated detail filters can create halos or ringing.