Epson Photo Plus - PhotoPlus Color Photo Scanner Guide de l'utilisateur Page 91

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Manipulating Images 85
Selecting layer opacity/transparency
New layers are transparent (they have an alpha channel) , but once you've placed
pixels on the layer you'll be able to select between the layer's pixels (i.e., their
opacity) and remaining transparency.
To create a selection from a layer's opacity/transparency:
For selection of Opacity:
In the Layers tab, Ctrl-click on the layer’s image thumbnail.
For selection of Transparency:
As above, but additionally select Invert from the Select menu.
Color Range
As an intelligent color selection method, i.e. where selection is based on
"tagging" a specific range of colors or tones in the image, choose Color Range
from the Select menu.
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