In order to run the sentry gun processing code, you will need to install the 32 bit version of the Processing ID environment first. You can download it here
Create a folder named "Processing" and copy the files provided with this step into it. Furthermore you will have to copy the files in the "copy these into processing root or system32" folder to your root system.
You can find a detailed description on how the software works on the project sentry gun page here
. The only major new thing is the surf classifier to detect the instructables robot. It can be controlled with these lines:
<pre>public boolean use_surf = true;
public int surf_sensivity = 3;
public String surfRefFile = "D:/Sentry/robot_live2.jpg";