Redirected touching: The effect of warping space on task performance

Kohli, Luv; Whitton, Mary C.; Brooks, Frederick P.

doi:10.1109/3dui.2012.6184193

Cited by 74 publications

(60 citation statements)

References 22 publications

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“…Interacting with virtual objects often means holding a hand in the air, which can be tiring if done for long. I present a technique to turn simple objects into haptic surfaces for virtual objects, extending earlier work on Redirected Touching [Kohli et al 2012].…”

Section: What and Whymentioning

confidence: 98%

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Warping virtual space for low-cost haptic feedback

Kohli

2013

Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games

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Section: What and Whymentioning

confidence: 98%

“…Touch corners of area onto which the virtual object will map 3. Warp virtual space using a 3D thin-plate spline, mapping the virtual object onto the real object (˜100ms for objects used here) [Kohli et al 2012] 4. While a user interacts with the object, map real finger positions to warped positions in real time…”

Section: The Techniquementioning

confidence: 99%

Warping virtual space for low-cost haptic feedback

Kohli

2013

Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games

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“…In a study by Kohli et al [12], the authors build on the concept that the sense of vision can take precedence over other senses in case of a conflict. They developed a technique called Redirected Touching which alters the way the user's virtual hand moves in the VE compared to its real movement.…”

Section: Related Workmentioning

confidence: 99%

Substitutional Reality

Simeone

Velloso

Gellersen

2015

Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems

276

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Figure 1. Two Virtual Environments based on the layout of a real room (middle): a medieval courtyard (left) and the bridge of a spaceship (right). In these Substitutional Environments, every physical object is paired, with some degree of discrepancy, to a contextually appropriate virtual object. ABSTRACTExperiencing Virtual Reality in domestic and other uncon trolled settings is challenging due to the presence of physical objects and furniture that are not usually defined in the Virtual Environment. To address this challenge, we explore the con cept of Substitutional Reality in the context of Virtual Reality: a class of Virtual Environments where every physical object surrounding a user is paired, with some degree of discrep ancy, to a virtual counterpart. We present a model of poten tial substitutions and validate it in two user studies. In the first study we investigated factors that affect participants' suspen sion of disbelief and ease of use. We systematically altered the virtual representation of a physical object and recorded re sponses from 20 participants. The second study investigated users' levels of engagement as the physical proxy for a virtual object varied. From the results, we derive a set of guidelines for the design of future Substitutional Reality experiences.

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“…Because we additionally evaluated the task performance related to Fitts' law during the Weight-Study, we considered the international standard for pointing devices [9] and this time we chose to use the multi-directional tapping task [13], with eight targets arranged in a ring. There have been only few studies applying Fitts' law on evaluation of AR interaction [19]), or on head-mounted Mixed Reality pointing [11].…”

Section: Research Objectivementioning

confidence: 99%

Enhancement of Direct Augmented Reality Object Selection by Gravity-Adapted Target Resizing

Markov-Vetter

Zander

Latsch

et al. 2016

Communications in Computer and Information Science

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Abstract. Direct object selection in an Augmented Reality environment that is coded outside of human body frame of reference is deteriorated under short-term altered gravity. As countermeasures we developed a gravity-adapted resizing technique based on the Hooke's law that resulted in two techniques of target and interface deformation (compression, elongation). To prove the concept of this resizing approach we initially conducted two experiments under simulated hypergravity conditions. While during the first study hypergravity was induced by a long-arm human centrifuge, in the second study hypergravity was simulated by additional arm weightings that were balanced and attached to the participants' pointing arm. We investigated the difference of the task performance with respect to the pointing frequency, response time, pointing speed and accuracy, when participants performed a visuomotor task under the resizing conditions compared to the unchanged condition. During the second study we additionally evaluated the speed-accuracy tradeoff of the resizing techniques according to Fitts' law and the physiological workload by cardiac responses analyzing the heart rate variability. Both experiments showed that the online adaption of the present gravity load to targets' size and distance influences the performance of direct AR direct pointing. The results revealed that the pointing performance benefits from elongation target deformation by increased target sizes and distances, while pointing towards compressed targets mostly decreases the physiological workload under increased gravity conditions.

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Redirected touching: The effect of warping space on task performance

Cited by 74 publications

References 22 publications

Warping virtual space for low-cost haptic feedback

Warping virtual space for low-cost haptic feedback

Substitutional Reality

Enhancement of Direct Augmented Reality Object Selection by Gravity-Adapted Target Resizing

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