A primer from EE Times surveying the technological landscape (with challenges and opportunities) related to the creation of 3D gestural UIs (more EE Times articles on similar topics).
“Stereo vision technology demands considerable software complexity for high-precision 3D depth data that can be processed by digital signal processors (DSPs) or multicore scalar processors. Stereo vision systems can be low cost and fit in a small form factor, making them a good choice for devices like mobile phones and other consumer devices. However, stereo vision systems cannot deliver the accuracy and response time that other technologies can, so they’re not ideal for systems requiring high accuracy.”
Link: Gesture recognition–first step toward 3D UIs? (eetimes.com)