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You are trying to create a directory in the /opt/ros/electric/ros/core path.
You will not have permission to create something in that place. If you still want to do it. You can change the permission of the ccny_vision folder with write access. I suggest you to have a ros_workspace created as given in the below page
http://www.ros.org/wiki/ROS/Tutorials/InstallingandConfiguringROSEnvironment
and use the same path for the future packages that you download and install. In this particular case, just have this workspace created and setup the environment. Paste your ccny_vision folder there and try to execute your commands.
Hope this helps, Karthik
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