Redirected Walking for Exploring Immersive Virtual Spaces With HMD: A Comprehensive Review and Recent Advances

Fan, Linwei; Li, Huiyu; Shi, Miaowen

doi:10.1109/tvcg.2022.3179269

Cited by 24 publications

(4 citation statements)

References 132 publications

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“…Overt reorientation techniques cause the user to notice the manipulation interventions easily by openly intervening to change the user's orientation (Suma et al 2012). This method can safely redirect users in circumstances where they will soon reach boundaries or are in danger of colliding with objects (Fan et al 2022;. These techniques can be divided into discrete and continuous methods.…”

Section: Visual Auditory and Olfactory Stimuli For Intermittent Reori...mentioning

confidence: 99%

Evaluation of visual, auditory, and olfactory stimulus-based attractors for intermittent reorientation in virtual reality locomotion

Lee,

Hwang,

Kim

et al. 2024

Virtual Reality

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In virtual reality, redirected walking (RDW) enables users to stay within the tracking area while feeling that they are traveling in a virtual space that is larger than the physical space. RDW uses a visual attractor to the user’s sight and scene manipulation for intermittent reorientation. However, repeated usage can hinder the virtual world immersion and weaken the reorientation performance. In this study, we propose using sounds and smells as alternative stimuli to draw the user’s attention implicitly and sustain the attractor’s performance for intermittent reorientation. To achieve this, we integrated visual, auditory, and olfactory attractors into an all-in-one stimulation system. Experiments revealed that the auditory attractor caused the fastest reorientation, the olfactory attractor induced the widest angular difference, and the attractor with the combined auditory and olfactory stimuli induced the largest angular speed, keeping users from noticing the manipulation. The findings demonstrate the potential of nonvisual attractors to reorient users in situations requiring intermittent reorientation.

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Section: Visual Auditory and Olfactory Stimuli For Intermittent Reori...mentioning

confidence: 99%

Evaluation of visual, auditory, and olfactory stimulus-based attractors for intermittent reorientation in virtual reality locomotion

Lee,

Hwang,

Kim

et al. 2024

Virtual Reality

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“…Moreover, the interactive method does not require a square shape but only a linear path wide enough for people to turn while remaining within the guardian. Comprehensive recent reviews of redirected walking can be found in Nilsson et al (2018), Li et al (2022), andFan et al (2023).…”

Section: Wipmentioning

confidence: 99%

“…For people in their home environment, such space requirements may not be realizable. However, techniques have been proposed to overcome this limitation (Fan et al, 2023) which will be analyzed in the Discussion Section 4.…”

Section: Introductionmentioning

confidence: 99%

A comparison of two methods for moving through a virtual environment: walking in place and interactive redirected walking

Banakou,

Slater

2023

Front. Virtual Real.

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Moving through a virtual environment that is larger than the physical space in which the participant operates has been a challenge since the early days of virtual reality. Many different methods have been proposed, such as joystick-based navigation, walking in place where the participant makes walking movements but is stationary in the physical space, and redirected walking where the environment is surreptitiously changed giving the illusion of walking in a long straight line in the virtual space but maybe a circle in the physical space. Each type of method has its limitations, ranging from simulator sickness to still requiring more physical space than is available. Stimulated by the COVID-19 lockdown, we developed a new method of locomotion which we refer to as interactive redirected walking. Here, the participant really walks but, when reaching a boundary, rotates the virtual world so that continuation of walking is always within the physical boundary. We carried out an exploratory study to compare this method with walking in place with respect to presence using questionnaires as well as qualitative responses based on comments written by the participants that were subjected to sentiment analysis. Surprisingly, we found that smaller physical boundaries favor interactive redirected walking, but for boundary lengths more than approximately 7 adult paces, the walking-in-place method is preferable.

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“…VR consists of two main components. The first is a virtual space, and the second is an interaction and display device that connects the user to the virtual space [3], [4]. Looking at an example of a game, there is a virtual space created by game designers, and users freely enjoy the virtual space as game characters through an interaction device.…”

Section: Introductionmentioning

confidence: 99%

Immersive Virtual Reality Content Supporting a Wide and Free Viewpoint Made With a Single 360° Camera

2023

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Light field (LF)-based virtual reality (VR) systems have been proposed to tackle the problem of 360 • panoramic image based VR not being able to support viewpoint movements. LF-based approaches still have shortcomings in that the user's movement range is narrow and an extensive setup and high cost are required for data acquisition. This paper proposes lawn mowing pattern LF (LMP-LF) structure and presents a wide and free VR system utilizing an LMP-LF. The contributions of this paper are as follows. First, this paper proposes an LMP-LF in which several three-dimensional LFs (3DLFs) are arranged at uniform intervals. This simplifies the data acquisition process and widens the range of viewpoint movements. Second, this paper defines a light ray pair between two adjacent 3DLFs of the LMP-LF. The relationship between two light rays forming a light ray pair is expressed only with one-dimensional (1D) disparity, which greatly reduces the amount of disparity and the estimation complexity. Third, a real-time VR system using the LMP-LF is implemented and demonstrated. The proposed VR system achieves a high rendering speed of 125 frames-per-second (fps). In the prototype system, wide and free rendering performance was verified by building an LMP-LF for an automobile showroom at a size of 50m 2 .INDEX TERMS Light field, free viewpoint, virtual reality, view navigation, view synthesis.

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Redirected Walking for Exploring Immersive Virtual Spaces With HMD: A Comprehensive Review and Recent Advances

Cited by 24 publications

References 132 publications

Evaluation of visual, auditory, and olfactory stimulus-based attractors for intermittent reorientation in virtual reality locomotion

Evaluation of visual, auditory, and olfactory stimulus-based attractors for intermittent reorientation in virtual reality locomotion

A comparison of two methods for moving through a virtual environment: walking in place and interactive redirected walking

Immersive Virtual Reality Content Supporting a Wide and Free Viewpoint Made With a Single 360° Camera

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