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116 ULEAD PHOTOIMPACT USER GUIDE
Determining color similarity
To use Similarity, enter a value that you feel most closely reflects the range of
colors you want to select. To help determine the color similarity range, consider
the following:
• As you move the Magic Wand over the target pixels in the image, the RGB,
Hex and HSB color values are displayed accordingly on the Status Bar.
• On the Attribute Toolbar, click Options and choose Compare by RGB or
Compare by HSB color values to convert the similarity value. In the RGB
model, Similarity ranges from 0 to 255. In the HSB model, Similarity ranges
from 0 to 100.
Below is a guideline on what to expect when choosing particular color ranges:
• A value of 0 selects neighboring pixels with exactly the same color value.
• A value of 255 selects pixels of all colors - thereby selecting the entire image.
• A value of 50 selects neighboring pixels that have values which differ from
the pixel you click by 50. For example, if you click a pixel with values R25,
G60, B190, neighboring pixels with values between R0, G10, B140, and R75,
G110, B240 will be selected.
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