518 Corel PaintShop Pro X7 User Guide
4 In the Function group box, choose one of the following options
for combining the images:
• Add — Image 1 Value + Image 2 Value
• Subtract — Image 1 Value – Image 2 Value
• AND — Binary And
• Average — (Image 1 value + Image 2 Value) / 2
• Multiply — Image 1 Value x Image 2 Value
• Difference — Absolute Value of (Image 1 Value – Image 2
Value)
• OR — Binary Or
• Darkest — Minimum of (Image 1 Value, Image 2 Value)
• Lightest — Maximum of (Image 1 Value, Image 2 Value)
• XOR - Exclusive Or
The color data from the two images is combined on a pixel-by-
pixel basis according to the function you choose.
5 From the Channel group box, do one of the following:
• To produce a 24-bit image, mark the All channels check box to
use all the color channels in both images to produce a 24-bit
image
• To produce a grayscale image, choose a color channel option for
each image. In the Modifiers group box, type or set values in the
following controls:
• Divisor — divides the color values by the value you specify. This
value can reduce the effects of the other selections.
• Bias — shifts each color value by amount you specify.
These modifiers are applied to the color values produced by the
Formula and the Channel selections.
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