Hello Ben, Cyrille, I answer to both for not flooding the list.
cyrille henry a écrit :
imagemagick is quite strange with tiff export. you have to manually add some option in order to have a valid tiff file. you can find the correct option somwhere on the net.
then, Gem load this file with no problem.
I didn't find any option that enables the alpha channel in tiff files, I've tried -channel RGBA -matte, -alpha, ... there is no hint on the net for that.
B. Bogart a écrit :
I did a quick test and GIMP will convert a transparent PNG to TIF fine. I don't have Gem working on this machine to test loading the tif, but I can confirm it shows transparency. "convert" did do something strange to the png file when converting to tif I can see...
send me your tif if you still can't get it to work and I'll see if I can confirm your troubles.
.b.
I'll use the batch mode of gimp since IM can't do this job, attached are three images, thesource.png, theresult.tiff, whatIwouldliketohave.tif