This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

RemoveAlphaChannel

RemoveAlphaChannel[image]
removes all opacity information from image.
RemoveAlphaChannel
removes opacity by blending all pixels with the background color c.
Drop the alpha channel from an image:
Remove opacity by blending with a white background:
Drop the alpha channel from an image:
In[1]:=
Click for copyable input
Out[1]=
 
Remove opacity by blending with a white background:
In[1]:=
Click for copyable input
Out[1]=
Remove opacity by blending with an orange background:
On an image with no alpha channel, the input image is returned:
Create artistic effects using alpha blending:
New in 8