The video extension (https://github.com/NetLogo/Gst-Video-Extension) allows you read video files as well as use live footage from the computer ' s webcam. This extension can be used for computer vision models. One simple way of doing feature detection is by tracking colorful objects. Make a model in which a turtle tracks the greenest object that your webcam can see. The first step in this process is to send the video data to the patches so that you can interact with the color information directly. Then, you must identify the greenest spot.