$ sudo apt-get update
$ sudo apt-get install libcasa-images2 

libcasa-images2 is installed in your system.

Make ensure the libcasa-images2 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libcasa-images2 *

You will get with libcasa-images2 package name, version, architecture and description in a table

libcasa-images2 package basic information: