User Guide

ACDSee™ Pro User Guide
102
Related topics
• Using the Sharpness tool
Adding noise to an image
You can use the Add Noise filter to add a grainy texture to an image. Adding small amounts of noise
can reduce the appearance of minor imperfections in the original image. You can save your options as
a preset for future use.
To add noise to an image:
1 In Edit Mode, on the Edit Panel, click Noise, and then select the Add Noise tab.
2 Set the options as described below.
3 Do one of the following:
•Click Done to apply your changes and close the Add Noise tool.
•Click Cancel to discard all changes and close the tool.
Plus Removes noise using a 3 x 3 pixel plus (+) shape. Use this option when you
want to preserve an image's thin, vertical, and horizontal lines.
Hybrid Removes noise using a 3 x 3 pixel square, a 3 x 3 pixel X shape, and a 3 x 3 pixel
plus (+) shape. Use this option when you want to preserve and image's thin,
diagonal, horizontal, and vertical lines. When hybrid is selected you have
additional noise removal options:
• Amount: Drag the slider to the left or right to select the range of pixels
that will be identified as noise. You would typically select a threshold of 10
to 20.
• Radius: Drag the slider to the left or right to apply median noise removal
to smaller or larger areas. For example, you typically increase the Radius
value to remove larger areas of noise, but this also removes detail from the
photo.
• Color Noise Reduction: Drag the slider to the left or right to control how
much the color variation in a photo is reduced. For example, drag the
slider to the right if you want to reduce color variation. However, you
should be careful about reducing color variation (that is caused by noise)
because you could unintentionally reduce real color variations in a photo.