The Gem Image_science is depends on FreeImage and RubyInline.So we have to install these two packages first.
Step : 1
Install FreeImage First from source:
1 sudo apt-get install build-essential
2 cd ~/sources
3 wget http://ftp.cica.es/ubuntu/ubuntu/pool/universe/f/freeimage/freeimage_3.9.3.orig.tar.gz
4 tar -xvf freeimage_3.9.3.orig.tar.gz
5 cd freeimage-3.9.3.repacked/FreeImage
6 make
7 sudo make install
Step : 2
Install RubyInline as Gem
1 sudo gem install RubyInline -v 3.6.3
Step : 3
Install ImageScience as Gem
1 sudo gem install image_science