Evaluating dynamic-adjustment of stereo view parameters in a multi-scale virtual environment

Cho, Isaac; Li, Jialei; Wartell, Zachary

doi:10.1109/3dui.2014.6798848

Cited by 8 publications

(8 citation statements)

References 30 publications

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“…Following previous work, we decided to scale the stereo camera separation accordingly to the rest of the body. While smaller variations of this virtual eye distance do not have any measurable impact on size judgments [4], larger differences lead to a false eye separation [9]. The result is an altered size perception that produces the desired miniature world effect.…”

Section: Perspective and Scalementioning

confidence: 96%

Outstanding: A Multi-Perspective Travel Approach for Virtual Reality Games

Cmentowski

Krekhov

Krüger

2019

Proceedings of the Annual Symposium on Computer-Human Interaction in Play

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Figure 1. Our proposed navigation technique allows players to switch to a scaled third-person perspective on demand and control a virtual avatar to cover large distances in open world VR scenarios. ABSTRACTIn virtual reality games, players dive into fictional environments and can experience a compelling and immersive world. State-of-the-art VR systems allow for natural and intuitive navigation through physical walking. However, the tracking space is still limited, and viable alternatives are required to reach further virtual destinations. Our work focuses on the exploration of vast open worlds -an area where existing local navigation approaches such as the arc-based teleport are not ideally suited and world-in-miniature techniques potentially reduce presence. We present a novel alternative for open environments: Our idea is to equip players with the ability to switch from first-person to a third-person bird's eye perspective on demand. From above, players can command their avatar and initiate travels over large distance. Our evaluation reveals a significant increase in spatial orientation while avoiding cybersickness and preserving presence, enjoyment, and competence. We summarize our findings in a set of comprehensive design guidelines to help developers integrate our technique.

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Section: Perspective and Scalementioning

confidence: 96%

Outstanding: A Multi-Perspective Travel Approach for Virtual Reality Games

Cmentowski

Krekhov

Krüger

2019

Proceedings of the Annual Symposium on Computer-Human Interaction in Play

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“…In our method, we used this operation to limit the disparities of the whole displayed images based on both the front view of the user and the depth information of the surrounding virtual environment of the user. Although the adjustments may slightly violate the geometry of binocular imaging for seeing the correct stereoscopic images, the visual depth will be compensated by other depth cues (Siegel and Nagata 2000), and it is generally accepted that the perceived 3D image depth range need not be equal to the model 3D depth range (Cho, Li, and Wartell 2014).…”

Section: Construction Of the Vehiclementioning

confidence: 99%

“…Therefore, their method shows better stability and more comfortable s3D visual effects when the scale of the front view changes. Cho, Li, and Wartell (2014) evaluated two major stereo fusion control techniques (autoscale and autotranslate) in a multiscale virtual environment. Their study showed the disadvantage of the autoadjustment of the s3D parameters based merely on scale, as it cannot control fusion violations for both the near and far point and suggested a combination with a false eye separation technique to resolve the problem.…”

Section: Introductionmentioning

confidence: 99%

ImprovedCubemapmodel for 3D navigation in geo-virtual reality

Duan

Gong

et al. 2014

International Journal of Digital Earth

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Due to advances in rendering techniques and hardware capability, stereoscopic 3D (s3D) visualization is becoming increasingly common in daily life. However, this does not change the fact that stereo effects and visual comfort depend greatly on how the related parameters are controlled during the production of the s3D images. In geovirtual reality systems, which are important browsers for Digital Earth, the maintenance of these parameters is deeply related to the navigation process. Therefore, the navigation method in such systems requires special care. This paper presents a new flying method based on a Cubemap structure. The method defines a Vehicle model and modifies the original Cubemap structure by adding a front view camera during the navigation; it allows the users to fly through a virtual geographic environment with automatic speed control, smooth collision resolution, and dynamic adjustment of the s3D-related parameters. A user test was conducted to compare this new method with the original method based on the Cubemap structure. The results show that the new method performs better than the former one for it provides a convenient interaction experience with improved stereoscopic effect, and diminishes visual discomfort.

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“…Navigation is a key component of any 3D user interface [Kulik 2009] as it allows the user to control the virtual camera viewpoint enabling the exploration of the virtual environment. With the actual complexity of virtual environments, navigation interfaces need to support zoom-in and zoom-out operations in order to fit the desired area of the virtual environment with the correct amount of detail [Cho et al 2014]. Zoom-in and zoom-out operations, when interactively navigating in the virtual environment, require a realtime adaptation of the navigation parameters, such as the navigation speed [McCrae et al 2009] or the stereo display parameters [Ware et al 1998], to ensure its usability.…”

Section: Introductionmentioning

confidence: 99%

“…Current multi-scale navigation techniques adjust the navigation speed in order to ensure an optimal navigation speed, for exampble by analyzing the user's surroundings [McCrae et al 2009] or the motion perception [Argelaguet 2014], focusing on either depth information [McCrae et al 2009] or optical flow analysis [Argelaguet 2014]. However, there is a lack of study and evaluation of multi-scale navigation techniques compliant with stereoscopic content, being the works by Carvalho et al [Carvalho et al 2011] and Cho et al [Cho et al 2014] the only few exceptions. Multi-scale navigation techniques for stereoscopic content have also to adjust the stereo rendering parameters in order to (1) avoid diplopia effects (e.g.…”

Section: Introductionmentioning

confidence: 99%