you should not need -channel rgba the -transparent acts to turn on the alpha
Fred >Sorry I didn't mean I wanted my output to be binary I need it to be >rgba. So what I am doing is >convert input.png -transparent black -depth 8 -channel rgba output.rgba. > >See any issues with that >Chris > >Fred Weinhaus wrote: > >>[magick-users] Convert Verify Output File. >>But you had no input image. Is your input binary already >>(thresholded)? Clarify or provide a link to your input image. >> >>If all you want is to turn black to transparent in your input image, then >> >>convert input.suffix -transparent black -depth 8 output.png >> >> >>If your image is not binary and you want it to be binary (black and >>white) and black transparent, then >> >>convert input.suffix -threshold xx% -transparent black -depth 8 output.png >> >> >>for example; >> >>convert -size 100x100 gradient: -threshold 50% -transparent black >>-depth 8 tmp.png >> >> >> >>> >>>I am trying to produce a binary representation of my input file where >>> >>>all black pixels are transparent. >>> >>> >>>Chris >>> >>> >>> > >>> >>> > >>> >>> > >>> >>> > >>> >>> > >>> >>> >> 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 >>> >> >> >> >>No virus found in this incoming message. >>Checked by AVG. >>Version: 7.5.524 / Virus Database: 270.1.0/1492 - Release Date: >>6/9/2008 10:29 AM >> _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
