You can't use visual key-points to navigate over open water.
You can use other things like Visual Odometer, but there are better sensors/techniques for that.
What it can do, if you have a big enough database onboard, and descriptors that are trained on the right thing, is give you a location when you hit land.
You can use other things like Visual Odometer, but there are better sensors/techniques for that.
What it can do, if you have a big enough database onboard, and descriptors that are trained on the right thing, is give you a location when you hit land.