Lego Roverbot Orientation

(2.6 MB) Video of the Roverbot from our perspective as it spins and stops pointing towards the camera. The camera and IR tower are positioned on the right of the image facing towards the Roverbot. Notice as the RCX starts to move the two flashes in the front of the yellow brick. That is the IR transmission being picked up by the overhead camera. Many cameras can see IR light that is not visible to the naked eye.

(3.2 MB) Video of the Roverbot as seen from the tracking camera. This is the original unprocessed video.

(389 KB) The processed video as seen by the static tracking camera (i.e. processed version of video above). The yellow blob is the Roverbot. Notice how the green bounding box changes in size as the Roverbot spins.

Want to try this yourself? Here is the .robo file that you can download and run yourself. You will also need the VBScript code to be placed into a orientation.vbs file next to the .robo file. Note that you need RoboRealm installed to run this file. You will also need the Phantom DLL installed to communicate with the Lego RCX using the USB or Serial communication.

Clicking on any of the modules will bring up that interface and allow you to customize it for yourself.

That's all folks. We hope you've enjoyed this little adventure into an application of vision processing to track green balls and have inspired you to download our software.

If you have any questions or comments about this tutorial please feel free to contact us.

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