User manual

DVO Grain

301

UM-2014.1-07

Use the spatial threshold sliders to adjust the setting for each channel.

If there is a high enough intensity/contrast (e.g. an edge) between the grain/

noise and surrounding pixels, filtering will not occur.

A low setting will only affect low intensity pixels (flat areas). A high

setting will start to affect high intensity pixels (edges)

Spatial Global

This enables filtering of the whole picture by switching off the motion

adaptation.

Use this toggle button to enable/disable global spatial filtering.

Default :

Off

A moderate level of global spatial filtering can be used as a basic level of grain

and noise reduction before using the temporal filtering (also see Global

Balance).

This may cause excessive softening of the picture if the spatial filter

is not set up correctly.

Temporal filtering works in areas with no or little motion.

Spatial filtering works in areas of motion.

Global enable the filters to work on the entire picture.

The R, G, B Strength controls should normally be ganged and

adjusted together. They typically need to be adjusted by the same

amount.

Optimising the Spatial Filter

1. Set Spatial Strength, Size and Threshold to their maximum

2. Turn Spatial Global on

3. Adapt the spatial filter to the grain/noise size by decreasing the spatial size

settings to as low as possible whilst still resulting in grain/noise being

removed

4. Decrease spatial threshold until edges are not affected (a typical setting is

between 8-20%)

5. Decrease spatial strength until the desired level of spatial filtering is

achieved

6. Decide whether Spatial Global should be left on (filtering of the whole

picture), or turned off (filtering only in areas with motion).