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Mathematica > Data Manipulation > Image Processing & Analysis > Color Processing > AlphaChannel >
Mathematica > Visualization and Graphics > Graphics Options & Styling > Colors > Color Processing > AlphaChannel >
Mathematica > Visualization and Graphics > Symbolic Graphics Language > Graphics Directives > Colors > Color Processing > AlphaChannel >

AlphaChannel

AlphaChannel[image]
returns the alpha channel of image.
  • AlphaChannel[image] returns an image in which each pixel represents the opacity of the corresponding pixel in image.
  • If image has no alpha channel, the opacity of each pixel is assumed to be 1.
Alpha channel of an image:
Alpha channel of an image:
In[1]:=
Click for copyable input
Out[1]=
The alpha channel of a completely opaque image is white:
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