Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
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You should always provide the version of ImageMagick you're using and what platform you're running it on, and maybe include the commands you've tried already. There are several ways to do most IM tasks, and you'll get better help if you give as much detail as you can.
So without knowing any more about it, at the simplest, from a command prompt on most *nix or Windows systems it can be done with a command like this...
That should produce three TIF images, one each from the red, green, and blue channels of the input image. The results are 8 bit gray, and have names like "out-00.tif", "out-01.tif", and "out-02.tif". If you're using IM7 use "magick" instead of "convert".
Code: Select all
convert input.png -separate -compress none -depth 8 out-%02d.tif