Here's how you can add the Hugin stitching software to your Ubuntu system. Here's a description of Hugin: "Hugin is a free open source panoramic stitching software available for Windows and Linux that allows users to create 360-degree panoramas. It is in fact a GUI front-end for Panorama Tools. You can use Hugin to stitch any number of photographs into a beautiful panoramic image (large image)."
1. Open a terminal window.
2. Type in the following commands then hit Enter.
sudo add-apt-repository ppa:hugin/hugin-builds
sudo apt-get update
sudo apt-get install hugin
For more, see the original article at the link below.