image_science version 1.0.0 has been released!
http://rubyforge.org/projects/seattlerb
ImageScience is a clean and happy Ruby library that generates thumbnails -- and kicks the living crap out of RMagick. Oh, and it doesn't leak memory like a sieve. :)
For more information including build steps, see our project page.
Changes:
1.0.0 / 2006-12-01
- 1 major enhancement
- Birthday!

I get a 404 when trying to download it.
Id like to use image_science, but ran into some problems with RubyInline and the freeimage c-wrapper.
Ubuntu Edgy Eft: upon require 'imagescience' the c-wrapper is built in ~/.rubyinline but when it tries to load the .so file it gives:
irb(main):002:0> require 'imagescience' LoadError: /home/donp/.rubyinline/InlineImageSciencef5ec.so: undefined symbol: ZSt18RbtreeincrementPSt18Rbtreenodebase - /home/donp/.rubyinline/InlineImageScience_f5ec.so
OS X: also my co-worked tried to run imagescience after installing freeimage on a macbook pro. RubyInline tried to compile the c-wrapper and gave the following error: ld: common symbols not allowed with MHDYLIB output format with the - multimodule option Source/LibPNG/./pnggccrd.o definition of common _ActiveMask (size 16) Source/LibPNG/./pnggccrd.o definition of common _ActiveMask2 (size 16) Source/LibPNG/./pnggccrd.o definition of common _ActiveMaskEnd (size 16) Source/LibPNG/./pnggccrd.o definition of common _ShiftBpp (size 16) Source/LibPNG/./pnggccrd.o definition of common _ShiftRem (size 16) libtool: internal link edit command failed
email me for more detail if that would help. how do you do a paragraph break on this thing?!
Do you have data that backs up your assertions about RMagick?
ImageScience seems like a bit of a hassle to install.