Legacy ImageMagick Discussions Archive

I just spent a very long time tracking down the source of the error message in my web application: convert: not authorized `upload.pdf' @ error/constitute.c/ReadImage/412. This is because I assumed "not authorized" meant something to do with file permissions, directory permissions, apache's systemd ...

Version: ImageMagick 6.6.8-10 2011-03-27 Q16 http://www.imagemagick.org

Oops - didn't see that! I was looking for it in the features list. Thanks for tip.

see http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=17839#p67735, which I believe works with Q16 IM compiles. Thanks - but this doesn't work. I actually need the full precision of 32-bit integers. Anyway, I've resolved this by rebuilding IM with 32-bit quantum. However I still ...

When looking at a 32-bit greyscale TIFF (for example, to dump pixels out as integers, using 'stream'), ImageMagick silently "corrupts" the data, converting, for example., a TIFF pixel whose real value is 0xffeeddcc into a reported value of 0xffeeffee. This turns out to be because the default quantum ...