Dynamic Foveated Rendering for Redirected Walking in Virtual Reality

摘要

Figure 1: Left: Orientation-based redirection in Virtual Reality (VR) using dynamic-foveated rendering which leverages the effect of inattentional blindness induced by a cognitive task. The blending (e.g. parallax of green alien) in the transition zone between the rotated virtual environment (VE) (non-foveal) and the non-rotated VE (foveal) is imperceptible by the users due to inattentional blindness. Angular gain of the non-foveal zone for the frame shown is at its maximum i.e. 13.5°. Right: The path walked in physical tracked space (PTS) up to that point is shown in orange color. The corresponding path in the VE is shown in blue color. The cyan-colored box indicates the 4 × 4m2 of available PTS and the camera icon inside the box indicates the location of the user w.r.t. the PTS. Even with room-scale PTS such as the one used, the users were able to walk distances in the virtual environment (VE) which are up to almost 18 times higher than the longest distance in the PTS; maximum recorded in experiments was 103.9m.