This is how things get interesting for the RealiSM project: the prototype works as an integrated video recording, editing, and playback system – all working hand in hand to generate what they call reality substitution. A custom-built camera rig, consisting of 18 high-definition cameras which are pointed in all directions, seamlessly shoots a 360-degree spherical imagery that is stitched together in all three dimensions of space. These 18 high-def cameras are paired with 4 omnidirectional microphones, able to pick up sound from all directions relative to the prototype. The 3D spherical video capture is then processed and is rendered by a custom-built HMD that also features a front camera to orient the user’s presence in both the virtual and outside environments.