Game Development Reference
Figure 12.70 The image in the
Remove Grain.aep project.
an ISO value of 1600—a colossal value that introduces a lot of
noise (Fig. 12.71 ).
Apply the Remove Grain effect to this image. As with Add Grain
and Match Grain, the render times for this effect are quite long,
and so the effect only makes changes to the pixels in a preview
region (Fig. 12.72 ).
Also, as with Add Grain and Match Grain, there are loads of
parameters. We'll cover the essential ones. First off, know that
the Remove Grain effect removes grain by examining certain
points of your image. By default, it selects those sample points
for you automatically, but if there are other places in your
layer that are noisier (dark areas, for example), you may like
to move the sample points around. To see the sample points
(there are eight by default), change the Viewing Mode to Noise
Samples. The noise samples will show up on your image in the
Composition panel as little white squares. At the bottom of
the effect options in the Effect Controls panel, you can open
up the Sampling area to adjust sample parameters. You can
set your own sample points by changing the Sample Selection
drop down in this area from Automatic to Manual. You can then