Michelle,
On the vehicle, I have 4 photo-transistors that detect when sections of the screen are white or black, allowing us to send 16 different control messages to the vehicle. This is all done over WiFi, yes, and it all works great, and I do plan on using this view as the overlay view.
Here's some more detail about the camera:
We are required to detect when the vehicle has traveled 1m, 2m, 3m, etc. We plan to hang markers from the ceiling and have the phone take pictures of the ceiling, locating the marker, and based on its location within the image, we will know how far we have traveled. The problem is that when taking the picture, it seems like I need some kind of user interaction get at the image, and, if the actual image of the ceiling is displayed on the screen, the vehicle is likely to misinterpret it as a control signal that wasn't intended.
Thanks for the help
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