In principle, just convert image.jpg -channel rgba -alpha on -colorspace yuv output.png
you need png or gif for output or some format that will save alpha channel. But as jpg does not support alpha channel, you will just get an opaque image as the result anyway. see http://www.imagemagick.org/script/command-line-options.php#colorspace http://www.imagemagick.org/script/command-line-options.php#alpha http://www.imagemagick.org/script/command-line-options.php#channel http://www.imagemagick.org/Usage/basics/#alpha http://www.imagemagick.org/Usage/channels/ >Dear expertsÅC > >I'm writing to ask how to convert *.jpg picture from YUV colorspace to >RGBA colorspace? > >Thank you for your help. > >Zhaoyang GUO > >-- >Sigma Designs Europe > >4, rue Ferrus >75014 Paris, France _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
