It's not a case of can they be. It's a case of can they cheaply be.
The camera app on your smartphone likely searches for them by default. That means feeding at least 1-2 frames a second through it.
Basic pattern matching for the position markers is a rounding error overhead vs processing a video feed. Fancy computer vision is not - on lower end devices you may not have enough resources to do both and on higher end devices it'll still impact power usage.
The camera app on your smartphone likely searches for them by default. That means feeding at least 1-2 frames a second through it.
Basic pattern matching for the position markers is a rounding error overhead vs processing a video feed. Fancy computer vision is not - on lower end devices you may not have enough resources to do both and on higher end devices it'll still impact power usage.