Blackmagic Design DaVinci Resolve Advanced Panel - Manual (Page 353)

CHAPTER REVIVAL
REVIVAL 353
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The user controls are:
Spatial (0-20): This control provides a blending of pixels with adjacent
pixels on a single frame. The edges are softened a bit in
order to reduce the fine grain noise. Since this is a spatial
control, processing of one frame does not affect adjacent
frames. A value of zero “0” will turn off spatial processing.
Noise Level (0-50): This control is used in temporal processing of the image.
This value represents a ratio of noise to motion. Higher
levels may tend to cause artifacts on some motion. For
grain, a value of 10-20 is a good starting point. When zero
“0,” there is no temporal or frame-to-frame processing.
Number of Frames (0-20): This value represents the number of frames plus and minus
of the processed frame in which averaging will take place.
This too, is a temporal control and a value of zero “0” turns
off temporal processing. Since it is a plus and minus value,
setting to 3 (typical) will process and average 7 frames (-3,
+3 and the current frame).
Patch Size (0-50): This control represents the size of the grain or noise pattern
to be processed. A setting of zero or one would indicate
pixels or grains, and should be used as such.Higher settings
like 40-50 could be used for a lower frequency type of
noise. A typical use for this would be some light form of
flicker in the dark areas. Note: High settings of Noise Level
and Low settings of Patch Size can cause motion artifacts
with some images, so use caution with extreme values for
these controls.
Color Space: This is normally set to RGB to process noise and/or grain in
RGB space. It’s the recommended mode, especially if the
grain or noise has color. This is the highest quality setting,
but takes slightly longer to process. Processing in YUV
mode will process faster than RGB, however a color space
conversion is performed with this mode. The Lum mode is
for luminance-only processing and is recommended only
for black and white material. A color space conversion is
also performed for this process.
The checkbox ‘Enable for slower and better quality processing’ is normally selected to provide the best
image motion preservation and will take longer to process the grain reduction than when deselected.