Comparison of Unobtrusive Visual Guidance Methods in an Immersive Dome Environment

Grogorick, Steve; Albuquerque, Georgia; Tauscher, Jan-Philipp; Magnor, Marcus

doi:10.1145/3238303

“…Finally, as this study used a noticeable peripheral cue in contrast to subtler versions in previous research, for example [25,26], it is possible that the cue's boldness encouraged more voluntary reactions, reducing differences between cues in our analyses. Further research should explore this prospect.…”

Section: Time Per Degree To Reach Roismentioning

confidence: 99%

“…Little research has assessed if the above traditional attention paradigms generalize to CVR, which can feature out-of-view ROIs that could complicate attention guidance. Grogorick and colleagues [25] compared several subtle peripheral cues, such as flicker, red dot, and zoom as well as blur techniques, in panoramic images within an immersive dome projection. Approximately 20-40% of participants responded with saccades (i.e.…”

Section: Reacting To Central Versus Peripheral Cuesmentioning

confidence: 99%

Directing versus Attracting Attention: Exploring the Effectiveness of Central and Peripheral Cues in Panoramic Videos

Schmitz¹,

MacQuarrie²,

Julier³

et al. 2020

2020 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

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Filmmakers of panoramic videos frequently struggle to guide attention to Regions of Interest (ROIs) due to consumers' freedom to explore. Some researchers hypothesize that peripheral cues attract reflexive/involuntary attention whereas cues within central vision engage and direct voluntary attention. This mixed-methods study evaluated the effectiveness of using central arrows and peripheral flickers to guide and focus attention in panoramic videos. Twentyfive adults wore a head-mounted display with an eye tracker and were guided to 14 ROIs in two panoramic videos. No significant differences emerged in regard to the number of followed cues, the time taken to reach and observe ROIs, ROI-related memory and user engagement. However, participants' gaze travelled a significantly greater distance toward ROIs within the first 500 ms after flickeronsets compared to arrow-onsets. Nevertheless, most users preferred the arrow and perceived it as significantly more rewarding than the flicker. The findings imply that traditional attention paradigms are not entirely applicable to panoramic videos, as peripheral cues appear to engage both involuntary and voluntary attention. Theoretical and practical implications as well as limitations are discussed.

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“…[27,62]). Moreover, existing CVR-research has primarily been conducted either with immersive panoramic images [25] or videos with static ROIs and no scene-changes [65], which make it relatively easy to guide attention [43]. Therefore, it is unclear how effective the cues are in more demanding/disorienting environments.…”

Section: Limitations Of Previous Researchmentioning

confidence: 99%

Directing versus Attracting Attention: Exploring the Effectiveness of Central and Peripheral Cues in Panoramic Videos

Schmitz

¹

,

MacQuarrie

²

,

Julier

³

et al. 2020

2020 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

View full text Add to dashboard Cite

Filmmakers of panoramic videos frequently struggle to guide attention to Regions of Interest (ROIs) due to consumers' freedom to explore. Some researchers hypothesize that peripheral cues attract reflexive/involuntary attention whereas cues within central vision engage and direct voluntary attention. This mixed-methods study evaluated the effectiveness of using central arrows and peripheral flickers to guide and focus attention in panoramic videos. Twentyfive adults wore a head-mounted display with an eye tracker and were guided to 14 ROIs in two panoramic videos. No significant differences emerged in regard to the number of followed cues, the time taken to reach and observe ROIs, ROI-related memory and user engagement. However, participants' gaze travelled a significantly greater distance toward ROIs within the first 500 ms after flickeronsets compared to arrow-onsets. Nevertheless, most users preferred the arrow and perceived it as significantly more rewarding than the flicker. The findings imply that traditional attention paradigms are not entirely applicable to panoramic videos, as peripheral cues appear to engage both involuntary and voluntary attention. Theoretical and practical implications as well as limitations are discussed.

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“…In the field of visual attention guidance, many different methods have been proposed in recent years for application in images as well as videos; in non‐immersive settings [DMGB04, BMSG09, VMFS11, HKS16], in VR settings using Head‐Mounted Display (HMD) [LCH*17, GSEM17, GAM18, RAK18, GTA*19], and even in an immersive room‐scale projection system [GATM18, GTA*19]. Attention guidance as a support means may be helpful in various application scenarios, such as virtual training or remote teaching [dKJ17, FMS*19, YKB19b, YKB19a], guided exploration [LH19], multi‐monitor surveillance tasks [SKB19] or immersive story telling [SP19, SRD*19, LSGB20].…”

Section: Related Workmentioning

confidence: 99%

Stereo Inverse Brightness Modulation for Guidance in Dynamic Panorama Videos in Virtual Reality

Grogorick

¹

,

Tauscher

²

,

Heesen

³

et al. 2020

Computer Graphics Forum

Self Cite

2

0

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The peak of virtual reality offers new exciting possibilities for the creation of media content but also poses new challenges. Some areas of interest might be overlooked because the visual content fills up a large portion of viewers' visual field. Moreover, this content is available in 360° around the viewer, yielding locations completely out of sight, making, for example, recall or storytelling in cinematic Virtual Reality (VR) quite difficult. In this paper, we present an evaluation of Stereo Inverse Brightness Modulation for effective and subtle guidance of participants' attention while navigating dynamic virtual environments. The used technique exploits the binocular rivalry effect from human stereo vision and was previously shown to be effective in static environments. Moreover, we propose an extension of the method for successful guidance towards target locations outside the initial visual field. We conduct three perceptual studies, using 13 distinct panorama videos and two VR systems (a VR head mounted display and a fully immersive dome projection system), to investigate (1) general applicability to dynamic environments, (2) stimulus parameter and VR system influence, and (3) effectiveness of the proposed extension for out‐of‐sight targets. Our results prove the applicability of the method to dynamic environments while maintaining its unobtrusive appearance.

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Comparison of Unobtrusive Visual Guidance Methods in an Immersive Dome Environment

Cited by 13 publications

References 16 publications

Directing versus Attracting Attention: Exploring the Effectiveness of Central and Peripheral Cues in Panoramic Videos

Directing versus Attracting Attention: Exploring the Effectiveness of Central and Peripheral Cues in Panoramic Videos

Directing versus Attracting Attention: Exploring the Effectiveness of Central and Peripheral Cues in Panoramic Videos

Stereo Inverse Brightness Modulation for Guidance in Dynamic Panorama Videos in Virtual Reality

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