The GUI loads the Simulink Model, sets up a feed of 320x240 images, and shows them in the GUI.
The feed is from a webcam.
Please note that if you don't have a camera that runs on "winvideo" adapter you would have to setup the block "From Video Device" in the Simulink model.
The zip file contains the GUI, Simulink model, a START_HERE m-file.
The example uses the LEVEL-2 S-Function template given by MathWorks, and adds some to it.
You need the license for image processing and image acquisition only if you want to read the video from a webcam, and do some procesing to the image. I've added some "Edge Detection" so it would be interesting...