Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization最新文献

The influence of avatar (self and character) animations on distance estimation, object interaction and locomotion in immersive virtual environments 沉浸式虚拟环境中化身(自我和角色)动画对距离估计、物体交互和运动的影响

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077458

Erin A. McManus, Bobby Bodenheimer, S. Streuber, S. Rosa, H. Bülthoff, B. Mohler

{"title":"The influence of avatar (self and character) animations on distance estimation, object interaction and locomotion in immersive virtual environments","authors":"Erin A. McManus, Bobby Bodenheimer, S. Streuber, S. Rosa, H. Bülthoff, B. Mohler","doi":"10.1145/2077451.2077458","DOIUrl":"https://doi.org/10.1145/2077451.2077458","url":null,"abstract":"Humans have been shown to perceive and perform actions differently in immersive virtual environments (VEs) as compared to the real world. Immersive VEs often lack the presence of virtual characters; users are rarely presented with a representation of their own body and have little to no experience with other human avatars/characters. However, virtual characters and avatars are more often being used in immersive VEs. In a two-phase experiment, we investigated the impact of seeing an animated character or a self-avatar in a head-mounted display VE on task performance. In particular, we examined performance on three different behavioral tasks in the VE. In a learning phase, participants either saw a character animation or an animation of a cone. In the task performance phase, we varied whether participants saw a co-located animated self-avatar. Participants performed a distance estimation, an object interaction and a stepping stone locomotion task within the VE. We find no impact of a character animation or a self-avatar on distance estimates. We find that both the animation and the self-avatar influenced task performance which involved interaction with elements in the environment; the object interaction and the stepping stone tasks. Overall the participants performed the tasks faster and more accurately when they either had a self-avatar or saw a character animation. The results suggest that including character animations or self-avatars before or during task execution is beneficial to performance on some common interaction tasks within the VE. Finally, we see that in all cases (even without seeing a character or self-avatar animation) participants learned to perform the tasks more quickly and/or more accurately over time.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"63 1","pages":"37-44"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91267277","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: 71

Perceptually-based compensation of light pollution in display systems 显示系统中基于感知的光污染补偿

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077460

J. Baar, Steven Poulakos, Wojciech Jarosz, D. Nowrouzezahrai, Rasmus Tamstorf, M. Gross

{"title":"Perceptually-based compensation of light pollution in display systems","authors":"J. Baar, Steven Poulakos, Wojciech Jarosz, D. Nowrouzezahrai, Rasmus Tamstorf, M. Gross","doi":"10.1145/2077451.2077460","DOIUrl":"https://doi.org/10.1145/2077451.2077460","url":null,"abstract":"This paper addresses the problem of unintended light contributions due to physical properties of display systems. An example of such unintended contribution is crosstalk in stereoscopic 3D display systems, often referred to as ghosting. Ghosting results in a reduction of visual quality, and may lead to an uncomfortable viewing experience. The latter is due to conflicting (depth) edge cues, which can hinder the human visual system (HVS) proper fusion of stereo images (stereopsis). We propose an automatic, perceptually-based computational compensation framework, which formulates pollution elimination as a minimization problem. Our method aims to distribute the error introduced by the pollution in a perceptually optimal manner. As a consequence ghost edges are smoothed locally, resulting in a more comfortable stereo viewing experience. We show how to make the computation tractable by exploiting the structure of the resulting problem, and also propose a perceptually-based pollution prediction. We show that our general framework is applicable to other light pollution problems, such as descattering.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"4 1","pages":"45-52"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80527690","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: 9

Gaze guidance reduces the number of vehicle-pedestrian collisions in a driving simulator 在驾驶模拟器中，凝视引导减少了车辆与行人碰撞的次数

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077482

L. Pomârjanschi, M. Dorr, E. Barth

引用次数: 0

Gaze-contingent real-time video processing to study natural vision 基于注视的实时视频处理研究自然视觉

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077476

M. Dorr, P. Bex

引用次数: 0

Gaze-contingent enhancements for a visual search and rescue task 视觉搜索和救援任务的视觉增强

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077472

James Mardell, M. Witkowski, R. Spence

引用次数: 5

Perceiving human motion variety 感知人类动作的变化

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077468

M. Prazák, C. O'Sullivan

{"title":"Perceiving human motion variety","authors":"M. Prazák, C. O'Sullivan","doi":"10.1145/2077451.2077468","DOIUrl":"https://doi.org/10.1145/2077451.2077468","url":null,"abstract":"In order to simulate plausible groups or crowds of virtual characters, it is important to ensure that the individuals in a crowd do not look, move, behave or sound identical to each other. Such obvious 'cloning' can be disconcerting and reduce the engagement of the viewer with an animated movie, virtual environment or game. In this paper, we focus in particular on the problem of motion cloning, i. e., where the motion from one person is used to animate more than one virtual character model. Using our database of motions captured from 83 actors (45M and 38F), we present an experimental framework for evaluating human motion, which allows both the static (e.g., skeletal structure) and dynamic aspects (e.g., walking style) of an animation to be controlled. This framework enables the creation of crowd scenarios using captured human motions, thereby generating simulations similar to those found in commercial games and movies, while allowing full control over the parameters that affect the perceived variety of the individual motions in a crowd. We use the framework to perform an experiment on the perception of characteristic walking motions in a crowd, and conclude that the minimum number of individual motions needed for a crowd to look varied could be as low as three. While the focus of this paper was on the dynamic aspects of animation, our framework is general enough to be used to explore a much wider range of factors that affect the perception of characteristic human motion.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"35 1","pages":"87-92"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81002940","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: 18

Egocentric distance perception in HMD-based virtual environments 基于hmd的虚拟环境中的自我中心距离感知

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077486

Qiufeng Lin, Xianshi Xie, Aysu Erdemir, G. Narasimham, T. McNamara, J. Rieser, Bobby Bodenheimer

引用次数: 2

Differentiating aggregate gaze distributions 区分聚合注视分布

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077473

Thomas Grindinger, A. Duchowski, P. Orero

引用次数: 0

Evaluation of video artifact perception using event-related potentials 利用事件相关电位评价视频伪影感知

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077461

Lea Lindemann, S. Wenger, M. Magnor

{"title":"Evaluation of video artifact perception using event-related potentials","authors":"Lea Lindemann, S. Wenger, M. Magnor","doi":"10.1145/2077451.2077461","DOIUrl":"https://doi.org/10.1145/2077451.2077461","url":null,"abstract":"When new computer graphics algorithms for image and video editing, rendering or compression are developed, the quality of the results has to be evaluated and compared. Since the produced media are usually to be presented to an audience it is important to predict image and video quality as it would be perceived by a human observer. This can be done by applying some image quality metric or by expensive and time consuming user studies. Typically, statistical image quality metrics do not correlate to quality perceived by a human observer. More sophisticated HVS-inspired algorithms often do not generalize to arbitrary images. A drawback of user studies is that perceived image or video quality is filtered by a decision process, which, in turn, may be influenced by the performed task and chosen quality scale. To get an objective view on (subjectively) perceived image quality, electroencephalography can be used. In this paper we show that artifacts appearing in videos elicit a measurable brain response which can be analyzed using the event-related potentials technique. Since electroencephalography itself requires an elaborate procedure, we aim to find a minimal setup to reduce time and participants needed to conduct a reliable study of image and video quality. As a first step we demonstrate that the reaction to a video with or without an artifact can be identified by an off-the-shelf support vector machine, which is trained on a set of previously recorded responses, with a reliability of up to 80% from a single recorded electroencephalogram.","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":"53-58"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89265840","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: 33

Using eye-tracking to assess different image retargeting methods 利用眼动追踪评估不同的图像重定位方法

Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization Pub Date : 2011-08-27 DOI: 10.1145/2077451.2077453

Susana Castillo, Tilke Judd, D. Gutierrez

引用次数: 41