Blackmagic Design DaVinci Resolve Advanced Panel - Manual (Page 237)

CHAPTER COLOR
COLOR 237
9
DaVinci resolve has GPU-based noise reduction that’s designed to let you quickly and easily subdue
noise in problematic clips, in real time.
Three parameters, located within the Primary tab of the Color page, control this effect:
NR Threshold: Lets you determine how much or how little noise reduction to apply to the
image by smoothing out regions of high-frequency noise while attempting to
preserve the sharpness of significant edge details. The range is 0-30, where 0
applies no noise reduction at all, and 30 is the maximum amount. Too high a
setting may soften the overall image too noticeably.
NR Radius: Higher values enable greater real time performance, and provide good quality
when using low NR Threshold values. However, you may see more aliasing in
regions of detail when using high NR Threshold values.
Setting NR Radius to progressively lower values results in higher quality within
areas of greater visual detail at high NR Threshold values, at the expense of
slower performance. The range is 1-4 (in whole integer values), where 4 is the
highest performance and lowest quality, and 1 is the highest quality and lowest
performance. An NR Radius of 3 should provide suitable quality for most
images when using medium NR Threshold settings.
NR Blend: Lets you dissolve between the image as it’s being affected by the NR
parameters (at 0.000) and the image with no noise reduction at all (1.000).
This parameter lets you easily split the difference between aggressive noise
reduction, and the prior state of the image.
As you can see, there’s an adjustable tradeoff between quality and speed.
Noise Reduction
Noise reduction controls in the Primary tab of the Color page