I am doing research of ego-motion estimation and positioning in 6DoF space. And I found that apparently all systems are based on active RGB-D sensors, like Kinect. I understand, that such sensors provide greater accuracy, and requires less computational resources.
But if such systems will be used, for example, for augmented reality or robot navigation, how they are going to solve the problem of the interference of signals from different systems, operating in the same space? If many people will wear AR glasses with active sensors - they will interfere with each other, aren't they?
Are there big commercial projects, that use passive visual odometry with multiple camera units and IMU sensors? I found some good papers on this topic, but I have not found commercial application of such technology. I am going to make research of passive odometry method for AR, but is it actually a problem with active depth sensors, that i described earlier?
UPD: The main question:
Is passive odometry, based on video flow analysis and IMU, worth to make deep research in this topic, or active sensors - is our future, and the signal mix is not a big deal, and passive odometry is a dead end of such kind of technology? Because it will be not very useful to make research in useless technology...