I am trying to produce a binary representation of my input file where all black pixels are transparent.
Chris Fred Weinhaus wrote: > Several problems: > > 1) you have not defined an image - need to add xc:somecolor or an image name > 2) space between - and transparent and between - and matte > 3) -depth should be at end > 4) jpg does not allow transparency - use png > > > convert -size 512x512 xc:none -depth 8 output.png > will make a completely transparent image > > convert input.png -transparent black -depth 8 output.png > will make all black pixels transparent in the input image > > What exactly are you trying to create? Please describe what your > image should look like. > > > To verify the image do > > identify -verbose output.png > > or > > convert output.png -verbose info: > > that will list all the image properties > > > > > >> Hi All, >> >> Firstly let me say thank you very much for all help provided thus far. I >> am still seeing something kind of strange. >> >> When I perform a convert. >> convert -depth 8 -size 512x512 - transparent black - matte demo.jpg >> demo.rgba. >> >> My Icons seem to be appearing completely transparent for some reason. >> >> 1. What's the best way to verify my rgba file >> 2. I looked at the properties of the file which said it was 32x32 which >> kind of struct me as odd as I suspected it would be at the very least >> 64x64 or 512x512... >> 3. I suspect the problem with my images being transparent is my alpha >> values are messed up. I was wondering if anyone could know why/how I can >> check this. >> >> Thanks, >> >> Cheers >> Chris >> > _______________________________________________ > Magick-users mailing list > [email protected] > http://studio.imagemagick.org/mailman/listinfo/magick-users > > > _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
