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Blurring individual channels allows you to create customized glow effects by retaining
sharpness in selected channels while softening others.
Original image Amount = 15, Blur Red On
Parameters in the Inspector
Amount: Sets the radius of the object blur.
Blur Red: Sets the blur to affect the red channel.
Blur Green: Sets the blur to affect the green channel.
Blur Blue: Sets the blur to affect the blue channel.
Blur Alpha: Sets the blur to affect the alpha channel.
Horizontal: Sets the percentage of maximum horizontal blur. This is a percentage of the
Amount parameter.
Vertical: Sets the percentage of maximum vertical blur.
Crop: Sets whether the image is cropped beyond its original borders.
Mix: Sets the percentage of the original image to be blended with the blurred image.
HUD Controls
The HUD contains the following controls: Amount, Blur Red, Blur Green, Blur Blue, and
Blur Alpha.
Circle Blur
Creates a circular blur within an image, specified by a center point that sets the center
of the blur effect and a radius that sets the size of the affected region. The amount of
blur in the affected area can also be customized.
This filter is useful for blurring a limited area in an image. For more sophisticated control
of the image region to be blurred, use the Compound Blur filter.
1009Chapter 19 Using Filters