Chroma Noise Reduction¶

Description

This effect/filter reduces chrominance noise.

Parameters

Parameter	Value	Description
Y+U+V Threshold	Integer	Set threshold for averaging chrominance values. Sum of absolute difference of Y, U and V pixel components of current pixel and neighbour pixels lower than this threshold will be used in averaging. Luma component is left unchanged and is copied to output. Default value is 30. Allowed range is from 1 to 200.
Horizontal / Vertical size	Integer	Set horizontal / vertical radius of rectangle used for averaging. Allowed range is from 1 to 100. Default value is 5.
Horizontal step	Integer	Set horizontal step when averaging. Default value is 1. Allowed range is from 1 to 50. Mostly useful to speed-up filtering.
Y / U / V threshold	Integer	Set Y / U / V threshold for averaging chrominance values. Set finer control for max allowed difference between Y / U / V components of current pixel and neighbour pixels. Default value is 200. Allowed range is from 1 to 200.
Distance	Selection	Set distance type used in calculations

The following selection items are available:

Distance

Manhatten	absolute difference (default)
Euclidean	difference squared