Hi everyone Thanks for your replies ! Can someone tell me the best reference (research paper from ROS developers) which details the software etc that it uses (i.e. gazebo, opencv etc) and also the Publisher-Subscriber abstractions ?. Much appreciated. Best regards Arkapravo -- Arkapravo Bhaumik Websites : http://3chevrons.blogspot.com/, http://mobotica.blogspot.com/ E-mail : arkapravobhaumik@gmail.com Twitter : @abhaumik Facebook : Arkapravo Bhaumik Skype : arkapravo