How to create 4-channel TIFs

[Jossie]

Hello,

is it possible to create 4-channel TIFs with imageMagick from 4 separate TIF files, i.e. "bits per sample 16 16 16 16"?

Hermann-Josef

[snibgo]

When the image is CMYK, a tiff file will have four channels. The four channels will be CMYK, of course.

[Jossie]

The images are RGB and the IR-channel from the scanner.

I read the documentation and had thought the following command should do it:

convert C1-VS_Dia_1410_R.tif C2-VS_Dia_1410_G.tif C3-VS_Dia_1410_B.tif C4-VS_Dia_1410_IR.tif -channel RGBA -combine VS_Dia_1410_test.tif

But it does not work. I get an error message "illegal parameter C2-VS_Dia_1410_G.tif"

Hermann-Josef

[Jossie]

solved! magick was missing!

Now it works nicely. Once again: If all else fails, read the instructions ...

Hermann-Josef