Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization最新文献_第9页

Transitional environments enhance distance perception in immersive virtual reality systems 过渡环境增强了沉浸式虚拟现实系统的距离感知能力

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1620998

Frank Steinicke, G. Bruder, K. Hinrichs, M. Lappe, B. Ries, V. Interrante

{"title":"Transitional environments enhance distance perception in immersive virtual reality systems","authors":"Frank Steinicke, G. Bruder, K. Hinrichs, M. Lappe, B. Ries, V. Interrante","doi":"10.1145/1620993.1620998","DOIUrl":"https://doi.org/10.1145/1620993.1620998","url":null,"abstract":"Several experiments have provided evidence that ego-centric distances are perceived as compressed in immersive virtual environments relative to the real world. The principal factors responsible for this phenomenon have remained largely unknown. However, recent experiments suggest that when the virtual environment (VE) is an exact replica of a user's real physical surroundings, the person's distance perception improves. Furthermore, it has been shown that when users start their virtual reality (VR) experience in such a virtual replica and then gradually transition to a different VE, their sense of presence in the actual virtual world increases significantly. In this case the virtual replica serves as a transitional environment between the real and virtual world.\u0000 In this paper we examine whether a person's distance estimation skills can be transferred from a transitional environment to a different VE. We have conducted blind walking experiments to analyze if starting the VR experience in a transitional environment can improve a person's ability to estimate distances in an immersive VR system. We found that users significantly improve their distance estimation skills when they enter the virtual world via a transitional environment.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"24 1","pages":"19-26"},"PeriodicalIF":0.0,"publicationDate":"2009-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91150106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 81

Display size does not affect egocentric distance perception of naturalistic stimuli 显示尺寸不影响自然刺激的自我中心距离知觉

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1620997

B. Riecke, Pooya Amini Behbahani, C. Shaw

{"title":"Display size does not affect egocentric distance perception of naturalistic stimuli","authors":"B. Riecke, Pooya Amini Behbahani, C. Shaw","doi":"10.1145/1620993.1620997","DOIUrl":"https://doi.org/10.1145/1620993.1620997","url":null,"abstract":"Although people are quite accurate in visually perceiving absolute egocentric distances in real environments up to 20m, they usually underestimate distances in virtual environments presented through head-mounted displays (HMDs). Several previous studies examined different potential factors, but none of these factors could convincingly explain the observed distance compressionin HMDs. In this study, we investigated the potential influence of naturalistic stimulus presentation and display size -- a factor largely overlooked in previous studies. To this end, we used an indirect blindfolded walking task to previously-seen targets. Participants viewed photos of targets located at various distances on the ground through different-sized displays (HMD, 24\" monitor, and 50\" screen) and walked without vision to where they thought the location of the target was. Real-world photographs were used to avoid potential artifacts of computer-graphics stimuli. Displays were positioned to provide identical fields of view (32° x 24°). Distance judgments were unexpectedly highly accurate and showed no signs of distance compression for any of the displays. Moreover, display size did not affect distance perception, and performance was virtually identical to a real world baseline, where real-world targets were viewed through 32° x 24° field of view restrictors. A careful analysis of potential underlying factors suggests that the typically-observed distance compression for HMDs might be overcome by using naturalistic real-world stimuli. This might also explain why display size did not affect distance judgments.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":" 12","pages":"15-18"},"PeriodicalIF":0.0,"publicationDate":"2009-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91515167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

An alternative selection method for pie menus: selection by borders 饼式菜单的另一种选择方法:按边框选择

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621020

Mario H. Urbina, A. Huckauf

引用次数: 0

A psychophysical study of dominant texture detection 优势纹理检测的心理物理研究

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621027

Jianye Lu, Alexandra Garr-Schultz, Julie Dorsey, H. Rushmeier

引用次数: 3

A case study evaluation: perceptually accurate textured surface models 一个案例研究评估:感知准确的纹理表面模型

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621015

G. Ward, M. Glencross

引用次数: 6

Quality assessment of fractalized NPR textures: a perceptual objective metric 分形NPR纹理的质量评估:一个感性的客观度量

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621016

P. Bénard, J. Thollot, F. Sillion

引用次数: 15

Effects of scale change on distance perception in virtual environments 尺度变化对虚拟环境中距离感知的影响

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1620999

T. Nguyen, Christine J. Ziemer, Timofey Grechkin, Benjamin Chihak, J. Plumert, J. Cremer, J. Kearney

{"title":"Effects of scale change on distance perception in virtual environments","authors":"T. Nguyen, Christine J. Ziemer, Timofey Grechkin, Benjamin Chihak, J. Plumert, J. Cremer, J. Kearney","doi":"10.1145/1620993.1620999","DOIUrl":"https://doi.org/10.1145/1620993.1620999","url":null,"abstract":"We conducted two experiments to investigate effects of scale changes on distance perception in virtual environments. In both experiments, participants first made distance estimates with feedback in a virtual tunnel (adaptation) and then made distance estimates without feedback in a differently sized environment (test). We examined two types of scale changes. In the \"Tunnel Scaled\" conditions, only the size of the tunnel changed from adaptation to test. In the \"All Scaled\" conditions, both the tunnel and target sizes changed from adaptation to test, along with the distance between the targets. Both experiments were carried out in an HMD. In the first experiment, participants made distance estimates by moving to targets via a joystick. In the \"All Scaled\" condition, participants overshot relative to adaptation when going from a large to a small environment, and they undershot relative to adaptation when going from a small to a large environment. We found almost no effects of scale change in either direction when only the tunnel was scaled at test. Experiment 2 was the same except that subjects made distance estimates via blindfolded walking. The pattern of results was the same, though the size of the overshoot/undershoot was attenuated. The discussion focuses on explanations for the effects of scale changes on distance estimates.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"66 1","pages":"27-34"},"PeriodicalIF":0.0,"publicationDate":"2009-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73757973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Video viewing preferences for HDR displays under varying ambient illumination 不同环境光照下HDR显示器的视频观看偏好

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621004

Allan G. Rempel, W. Heidrich, Hiroe Li, Rafał K. Mantiuk

{"title":"Video viewing preferences for HDR displays under varying ambient illumination","authors":"Allan G. Rempel, W. Heidrich, Hiroe Li, Rafał K. Mantiuk","doi":"10.1145/1620993.1621004","DOIUrl":"https://doi.org/10.1145/1620993.1621004","url":null,"abstract":"Recent high dynamic range (HDR) display devices provide significantly greater output brightness and dynamic range compared to conventional display technology. A possible concern for the extended use of HDR displays is the potential to cause visual fatigue. Furthermore, ambient illumination has a significant effect on the perception of the imagery displayed, and its impact on user preferences for brightness and contrast must be understood.\u0000 In our work we examine these issues by conducting two user studies. In each study, subjects watched video content on an HDR display in several different ambient illumination environments, and were asked to adjust the brightness and black level of the display to their preference. Subjects were also given questionnaires to document their observations and subjective preferences as well as any visual fatigue they may have experienced. We found that subjects experienced minimal visual fatigue, and also found statistically significant differences in preferred display settings under different ambient lighting conditions.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"1 1","pages":"45-52"},"PeriodicalIF":0.0,"publicationDate":"2009-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89411940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 51

The contributions of self-motion cues and room shape during navigation through virtual environments 在虚拟环境中导航时，自我运动线索和房间形状的贡献

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621031

Jonathan W. Kelly, Matthew D. Calderwood, T. McNamara, Bobby Bodenheimer

引用次数: 1

A schema-based selective rendering framework 基于模式的选择性呈现框架

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2009-09-30 DOI: 10.1145/1620993.1621011

A. Zotos, K. Mania, N. Mourkoussis

{"title":"A schema-based selective rendering framework","authors":"A. Zotos, K. Mania, N. Mourkoussis","doi":"10.1145/1620993.1621011","DOIUrl":"https://doi.org/10.1145/1620993.1621011","url":null,"abstract":"Perception principles have been incorporated into rendering algorithms in order to optimize rendering computation and produce photorealistic images from a human rather than a machine point of view. In order to economize on rendering computation, selective rendering guides high level of detail to specific regions of a synthetic scene and lower quality to the remaining scene, without compromising the level of information transmitted. Scene regions that have been rendered in low and high quality can be combined to form one complete scene. Such decisions are guided by predictive attention modeling, gaze or task-based information. We propose a novel selective rendering approach which is task and gaze-independent, simulating cognitive creation of spatial hypotheses. Scene objects are rendered in varying polygon quality according to how they are associated with the context (schema) of the scene. Experimental studies in synthetic scenes have revealed that consistent objects which are expected to be found in a scene can be rendered in lower quality without affecting information uptake. Exploiting such expectations, inconsistent items which are salient require a high level of rendering detail in order for them to be perceptually acknowledged. The contribution of this paper is an innovative x3D-based selective rendering framework based on memory schemas and implemented through metadata enrichment.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"31 1","pages":"85-92"},"PeriodicalIF":0.0,"publicationDate":"2009-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87443505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11