Daylighting and Its Impact on Depth Perception in a Daylit Space

Tai, Nan-Ching

doi:10.2150/jlve.36.16

Cited by 7 publications

(5 citation statements)

References 11 publications

(9 reference statements)

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“…The authors concluded that perspective cues might be more important to be included in virtual environments than other pictorial depth cues. Tai [2012] employed various lighting conditions and found a tendency for longer distance estimates in conditions with lower luminance contrast between target and background. However, the author did not report any statistical tests.…”

Section: The Availability Of Pictorial Depth Cuesmentioning

confidence: 99%

The perception of egocentric distances in virtual environments - A review

2013

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Over the last 20 years research has been done on the question of how egocentric distances, i.e., the subjectively reported distance from a human observer to an object, are perceived in virtual environments. This review surveys the existing literature on empirical user studies on this topic. In summary, there is a mean estimation of egocentric distances in virtual environments of about 74% of the modeled distances. Many factors possibly influencing distance estimates were reported in the literature. We arranged these factors into four groups, namely measurement methods, technical factors, compositional factors, and human factors. The research on these factors is summarized, conclusions are drawn, and promising areas for future research are outlined.

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Section: The Availability Of Pictorial Depth Cuesmentioning

confidence: 99%

The perception of egocentric distances in virtual environments - A review

2013

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“…As was mentioned, luminance contrast was also investigated and reported in the literature [ 45 ]. While we did not investigate it, we examined light location and color.…”

Section: Discussionmentioning

confidence: 99%

“…It was also examined whether the existence of virtual avatars can affect distance estimation [ 42 , 43 , 44 ]. Luminance contrast can influence it as well [ 45 ]. Ground information also plays a critical role [ 46 ]: horizontal, vertical lines, or even brick textures can affect distance estimation [ 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

Examining the Results of Virtual Reality-Based Egocentric Distance Estimation Tests Based on Immersion Level

Guzsvinecz

Perge

Szűcs

2023

Sensors

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Depth perception as well as egocentric distance estimation can be trained in virtual spaces, although incorrect estimates can occur in these environments. To understand this phenomenon, a virtual environment with 11 changeable factors was created. Egocentric distance estimation skills of 239 participants were assessed with it in the range [25 cm, 160 cm]. One hundred fifty-seven people used a desktop display and seventy-two the Gear VR. According to the results, these investigated factors can have various effects combined with the two display devices on distance estimation and its time. Overall, desktop display users are more likely to accurately estimate or overestimate distances, and significant overestimations occur at 130 and 160 cm. With the Gear VR, distances in the range [40 cm, 130 cm] are significantly underestimated, while at 25 cm, they are significantly overestimated. Estimation times are significantly decreased with the Gear VR. When developing future virtual environments that require depth perception skills, developers should take these results into account.

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“…We refer the reader to the survey by Renner et al [61] for an in-depth review on the topic. The significant variability of available pictorial depth cues-such as texture [71], lighting [70], number of objects [38]-in different virtual environments could cause varying levels of distortion in perceived depth. The technical properties of current VR systems, such as FoV [35], IPD [4,78], and vergence-accommodation conflict [27] may also affect depth perception accuracy.…”

Section: Perception Studies In Immersive Vrmentioning

confidence: 99%

Thinking Outside the Lab: VR Size & Depth Perception in the Wild

Arora¹,

Li²,

Shi³

et al. 2021

Preprint

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of VR, visual perception has received considerable attention in psychology and cognitive science research [1,2,12]. Of particular interest is the perception of the geometric attributes of visual space, namely distance and size. Realworld size and distance perception experiments have a rich century-old history in cognitive science [9,30,77], and similar experiments in VR serve a dual purpose. Not only do such studies advance our understanding of visual perception in VR, but a virtual world closely simulating reality provides a unique opportunity to construct environments that are difficult or impossible in the real world. Such fantastical constructs can be used to manipulate perceptual cues at will and gain insights into the human visual system [5]. VR size and distance perception studies can thus improve our understanding of real-world perception as well. At the same time, due to the shortcomings of current VR devices, such as the well-known vergence-accommodation conflict [27], it is essential to conduct perceptual studies in VR to inform the design of VR applications where perceptual accuracy is crucial.Most geometric perception studies, whether real-world or in VR, utilize strictly controlled laboratory conditions (e.g. [11,20,21,54]). While maintaining strict control over the experiment is invaluable for gaining theoretical insights into the human visual system as noted above, the practical utility of the results to real-world applications is limited. For example, a typical perceptual experiment in VR would utilize the same hardware for all users, ensure strict calibration of the interpupillary distance (IPD), and control the position of the head-mounted display (HMD) on the user's head. In real-world usage, users utilize diverse VR setups, and are typically untrained in proper IPD adjustment-adjusting IPD and HMD position for comfort, rather than physical accuracy. Recently, Hornsey et al. [29] reported encouraging results on a size and shape constancy task where a) two different devices, Oculus Rift and HTC Vive, were utilized and b) IPD was not adjusted or controlled for. However, the results were still conducted in a laboratory setting, requiring significant investment of experimenter and participant time and effort. Inspired by their results, we present the first remote study on geometric perception in VR (Fig. 1a). Our size and distance perception experiment aims at achieving results that are ecologically valid, that is, we want to model real-world HMD usage to inform the development of VR applications. In addition to removing strict controls on the experiment conditions, a remote study enables us to access a large and diverse pool of participants (Fig. 1b). In this work, we report on a medium-scale study with N=60. Studies such as ours are especially relevant today owing to the COVID-19 physical distancing requirements which make remote studies an attractive option for experimental research involving human subjects. Study Summary. In our experiment, we study the perception of size and egocentric distan...

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Daylighting and Its Impact on Depth Perception in a Daylit Space

Cited by 7 publications

References 11 publications

The perception of egocentric distances in virtual environments - A review

The perception of egocentric distances in virtual environments - A review

Examining the Results of Virtual Reality-Based Egocentric Distance Estimation Tests Based on Immersion Level

Thinking Outside the Lab: VR Size & Depth Perception in the Wild

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