Loading ...
Loading ...
Loading ...
– Luma: Lets you determine how much or how little noise reduction to apply to the luma component
of the image. The range is 0–100, where 0 applies no noise reduction at all, and 100 is the
maximum amount. Too high a setting may eliminate fine detail from the image.
– Chroma: Lets you determine how much or how little noise reduction to apply to the chroma
component of the image by smoothing out regions of high-frequency noise while attempting to
preserve thesharpness of significant edge details. The range is 0–100, where 0 applies no noise
reduction at all, and 100 is the maximum amount. Too high a setting may eliminate fine color detail
from the image. However, you may find you can raise the Chroma Threshold higher than the Luma
Threshold with less noticeable artifacting.
– Gang Luma Chroma: Ordinarily, the Luma and Chroma Threshold parameters are ganged together
so that adjusting one adjusts both. However, you can ungang these parameters to adjust different
amounts of noise reduction to each component of the image. For example, if an image softens too
much at a certain level of noise reduction, but you find more color speckling than luma noise, you
can lower the Luma Threshold to preserve detail while raising the Chroma Threshold to eliminate
color noise.
– Blend: Lets you dissolve between the image as it’s being affected by the Spatial NR parameters
(at 0.0) and the image with no noise reduction (100.0). This parameter lets you easily split the
difference when using aggressive spatial noise reduction.
Global Blend
– Blend: Lets you dissolve between the image with no noise reduction (1.0) and the image with both
Spatial NR and Temporal NR at their current settings (0.0).
Using Noise Reduction
The following procedure suggests a method of using the Noise Reduction (NR) parameters to achieve
a controlled result.
Applying noise reduction to an image:
1 Enable Temporal NR by choosing 1 to 5 frames from the Number of Frames pop-up menu. Keep in
mind that more frames dramatically increase the render time of this effect, while it may or may not
significantly improve the result, depending on your material.
2 Choose options from the Motion Est. Type and Motion Range drop-down menus corresponding
to how much motion is in the image. If there’s a lot of motion, you may need to choose Better and
Large. If there’s not very much motion, lesser settings may suffice.
3 With Luma and Chroma Threshold linked, slowly raise either parameter until you just start to see
a reduction in noise within nonmoving areas. Then make smaller adjustments to determine the
maximum amount you can add without creating artifacts or overly softening detail.
4 If there’s obviously more chroma than luma noise in the image, you can disable Luma/Chroma
linking at a satisfactory level of luma noise reduction, and then raise the Chroma Threshold to
address color speckling in the picture.
5 Suppose you’re not satisfied with the tradeoff between the maximum possible threshold of noise
reduction and the prevention of motion artifacts. In that case, you may want to adjust the Motion
Threshold setting, lowering it to omit more of the motion from the noise reduction operation, or
raising it to include more motion. If you’re still not satisfied, you can also try better Motion Est. Type
and Motion Range settings.
Keep in mind that the strength of Temporal NR is to reduce noise in unmoving parts of the image.
When you’ve achieved the best tradeoff between noise reduction in the still areas and avoidance
of motion artifacts in the moving areas of the image, it’s time to turn to Spatial NR to further
eliminate noise throughout the rest of the picture.
Chapter 159Resolve FX Revival 3057
Loading ...
Loading ...
Loading ...