imager: rm.alpha – R documentation

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rm.alpha

Remove alpha channel and store as attribute

Remove alpha channel and store as attribute

rm.alpha(im)

`im`	an image with 4 RGBA colour channels

an image with only three RGB channels and the alpha channel as attribute

Simon Barthelme

#An image with 4 colour channels (RGBA)
im <- imfill(2,2,val=c(0,0,0,0))
#Remove fourth channel
rm.alpha(im)
attr(rm.alpha(im),"alpha")

Image Processing Library Based on 'CImg'

v0.42.10

LGPL-3

Authors

Simon Barthelme [aut], David Tschumperle [ctb], Jan Wijffels [ctb], Haz Edine Assemlal [ctb], Shota Ochi [cre]

Initial release