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<a href="http://seattlerb.rubyforge.org/ImageScience.html">ImageScience</a> is a clean and happy Ruby library that generates thumbnails -- and kicks the living crap out of <nowiki>RMagick</nowiki>. Oh, and it doesn't leak memory like a sieve. :) h2. Installing <nowiki>ImageScience</nowiki> on <nowiki>CentOS</nowiki> 4/5 <pre> <code> #install requirements sudo yum install -y cvs gcc-c++ #login to the FreeImage CVS server #when prompted for a password, hit enter cvs -z3 -d:pserver:anonymous@freeimage.cvs.sourceforge.net:/cvsroot/freeimage login #checkout FreeImage #this will take a ridiculously long time, thanks to CVS cvs -z3 -d:pserver:anonymous@freeimage.cvs.sourceforge.net:/cvsroot/freeimage co -D 2007-01-01 -P FreeImage cd FreeImage #compile FreeImage make PATH=$PATH:/sbin sudo make install #install ImageScience gem sudo gem install image_science #install RubyInline sudo gem install RubyInline </code> </pre> If you're on a 64-bit OS (uname -i) you'll need to checkout from 2007-02-11 instead of 2007-01-01 in the directions above. You might get these errors otherwise: <pre> <code> /usr/bin/ld: ./Source/FreeImage/BitmapAccess.o: relocation R_X86_64_32S against `a local symbol' can not be used when making a shared object; recompile with -fPIC </code> </pre> or <pre> <code> Source/Metadata/Exif.cpp:498: error: cast from 'BYTE*' to 'DWORD' loses precision make[1]: *** [Source/Metadata/Exif.o] Error 1 </code> </pre>

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