User Guide

ADOBE PREMIERE PRO 2.0
User Guide
321
See also
“Using the Track Matte Key” on page 366
“To create transparency in a superimposed clip” on page 367
Noise effects
Median effect
The Median effect replaces each pixel with the median pixel value of neighboring pixels within a given radius. At low
values, this effect reduces noise. At higher values, this effect gives a clip a painterly effect.
The Median effect has the following settings:
Radius Specifies how many pixels to examine for the Median effect. For instance, when Radius is set to 1, the Median
will be performed on the eight neighboring pixels that are within one pixel of the center pixel.
Operate On Alpha Channel Applies the effect to the alpha channel of the clip.
Noise & Grain effects
Dust & Scratches effect
The Dust & Scratches effect reduces noise by changing dissimilar pixels. To achieve a balance between sharpness of
the image and hiding defects, try various combinations of radius and threshold settings. Draft and Best quality
settings give the same results.
Dust & Scratches effect: Original image with scratches (left), enlarged view of scratches (center), and scratches removed with loss of clarity
(right)
To apply the Dust & Scratches effect
1
Select a clip in the Timeline panel.
2 From the Noise & Grain bin in the Video Effects bin of the Effects panel, apply the Dust & Scratches effect by
doing one of the following:
• Drag the effect to the Video Effects area of the Effect Controls panel.
• Drag the effect to the clip in the Timeline panel.
3 In the Effect Controls panel, click the triangle to expand the Dust & Scratches effect options.
4 Drag the Radius slider right, or enter a value in the value field from 0 to 255 pixels. (The radius determines how
far the filter searches for differences among pixels. Adjusting the radius makes the image blurry. Stop at the smallest
value that eliminates the defects.)