Scaling Gain and Eyeheight While Locomoting in a Large VE

Step on it: asymmetric gain functions improve starting and stopping in virtual reality walking

“…Even simply turning the head when standing still results in some lateral motion, which would be greatly exaggerated when using high-gain values. This makes it difficult to control small, local movements and can result in disturbing motion while walking (Wilson et al 2018;Williams et al 2006;Williams-Sanders et al 2019;Abtahi et al 2019;Tirado et al 2019). Williams et al investigated the effect of non-isometric walking with constant gains of 1.0, 2.0, and 10 on spatial orientation and concluded that it is a viable locomotion method (Williams et al 2006).…”

“…Gradually increasing the gain values with the user's velocity avoids the problem of a high-gain scaling small head movements (Interrante et al 2007; Williams-Sanders et al 2019). In "Seven League Boots," one of the first studies using non-isometric walking, Interrante et al (2007) did this by linearly scaling the gain value by the walking velocity: When the velocity is low, the gain value is also low.…”

“…With a nonlinear transfer function, users gradually accelerate to their maximum virtual speed and avoid jarring motion effects for small head movements. This approach has been shown to increase the usability and limit VR sickness effects of transfer functions with a high gain (Williams-Sanders et al 2019;Interrante et al 2007). However, the design space for transfer functions is extensive, and no guidelines exist on how to design these functions.…”

“…For relatively low gain values 1 of less than three, a 1:N mapping, resulting in a constant gain, can be used without affecting spatial orienting performance, user experience, or VR sickness too much (Williams 2008;Wilson et al 2018;Steinicke et al 2010;Williams-Sanders et al 2019). Even lower gain values are often used in redirected walking techniques to make the manipulation of the virtual movement imperceptible (Steinicke et al 2010).…”

Imperceptible manipulation of lateral camera motion for improved virtual reality applications

“…showed that it is possible to introduce additional discrete rotations and translations during eye blinks, while Bolte et al [2015] exploited saccadic suppression in a similar fashion. Other works have considered the impact of scaling eye height [Williams-Sanders et al 2019], or the use of distractors: Sun et al [2018] used image-space modulations for increasing the amount of saccadic redirection they could apply, while Peck et al [2011] used distractors to guide users away from the boundaries of the physical space. In Table 1 we compare some close works and ours.…”