Proceedings of the ACM Symposium on Applied Perception最新文献_第7页

Assessing naturalness and emotional intensity: a perceptual study of animated facial motion 评估自然和情绪强度:动画面部运动的知觉研究

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628267

Jennifer Hyde, E. Carter, S. Kiesler, J. Hodgins

{"title":"Assessing naturalness and emotional intensity: a perceptual study of animated facial motion","authors":"Jennifer Hyde, E. Carter, S. Kiesler, J. Hodgins","doi":"10.1145/2628257.2628267","DOIUrl":"https://doi.org/10.1145/2628257.2628267","url":null,"abstract":"Animated characters appear in applications for entertainment, education, and therapy. When these characters display appropriate emotions for their context, they can be particularly effective. Characters can display emotions by accurately mimicking the facial expressions and vocal cues that people display or by damping or exaggerating the emotionality of the expressions. In this work, we explored which of these strategies would be most effective for animated characters. We investigated the effects of altering the auditory and facial levels of expressiveness on emotion recognition accuracy and ratings of perceived emotional intensity and naturalness. We ran an experiment with emotion (angry, happy, sad), auditory emotion level (low, high), and facial motion magnitude (damped, unaltered, exaggerated) as within-subjects factors. Participants evaluated animations of a character whose facial motion matched that of an actress we tracked using an active appearance model. This method of tracking and animation can capture subtle facial motions in real-time, a necessity for many interactive animated characters. We manipulated auditory emotion level by asking the actress to speak sentences at varying levels, and we manipulated facial motion magnitude by exaggerating and damping the actress's spatial motion. We found that the magnitude of auditory expressiveness was positively related to emotion recognition accuracy and ratings of emotional intensity. The magnitude of facial motion was positively related to ratings of emotional intensity but negatively related to ratings of naturalness.","PeriodicalId":102213,"journal":{"name":"Proceedings of the ACM Symposium on Applied Perception","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121381278","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

Collaborative metaphor for haptic designation in complex 3D environments 复杂三维环境中触觉设计的协同隐喻

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628262

Adrien Girard, M. Auvray, M. Ammi

引用次数: 1

Perceptual gloss space BRDF projection, uniformity validation, and lightness distance metric 感知光泽度空间BRDF投影、均匀性验证和亮度距离度量

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628355

A. Forés, M. Fairchild, I. Tastl

引用次数: 2

A pilot study on binocular rivalry and motion using virtual reality 利用虚拟现实技术进行双目竞争与运动的初步研究

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628357

Richard A. Paris, R. Blake, Bobby Bodenheimer

引用次数: 0

Comparing the effectiveness of stereo projection versus 3D TV in inducing self-motion illusions (vection) 立体投影与3D电视诱导自动错觉效果的比较(向量)

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628360

Jacqueline D. Jordan, Mirjana Prpa, Daniel Feuereissen, B. Riecke

{"title":"Comparing the effectiveness of stereo projection versus 3D TV in inducing self-motion illusions (vection)","authors":"Jacqueline D. Jordan, Mirjana Prpa, Daniel Feuereissen, B. Riecke","doi":"10.1145/2628257.2628360","DOIUrl":"https://doi.org/10.1145/2628257.2628360","url":null,"abstract":"A necessary part of developing effective and realistic Virtual Reality (VR) simulations is emulating perceptual sensations that occur to humans in corresponding natural environments. VR users are often seated and unable to freely move through the virtual world, therefore necessitating other means to simulate and perceive self-movement. One approach to tackle this challenge is to induce embodied illusions of self-motion (\"vection\") in stationary observers, typically by providing moving visual stimuli on a wide field-of-view display. While numerous stimulus parameters have been shown to affect vection [see Riecke, 2011 for a review], there is little research investigating how the type of display itself might contribute. Here, we compared the vection-inducing potential as well as user experience and usability of two common displays for large-field stimulation: A passive stereoscopic projection setup and a 3D television with shutter glasses. Uncovering differences in vection between these displays would contribute to the theoretical understanding of vection and the potential relevance of different display properties, and guide the development of more immersive and effective VR setups. From a practical standpoint, this study helps to determine whether the more expensive projection system provides a benefit over the more accessible and affordable 3D television.","PeriodicalId":102213,"journal":{"name":"Proceedings of the ACM Symposium on Applied Perception","volume":"46 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134363897","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: 0

Distance estimation in virtual environments using different HMDs 使用不同头戴式显示器的虚拟环境中的距离估计

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628359

Scott M. Andrus, G. B. Gaylor, Bobby Bodenheimer

引用次数: 5

Evaluating affective features of 3D motionscapes 评价3D动画的情感特征

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628264

Chao Feng, L. Bartram, B. Riecke

引用次数: 18

Countering user deviation during redirected walking 在重定向行走过程中对抗用户偏差

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628352

Mahdi Azmandian, M. Bolas, Evan A. Suma

{"title":"Countering user deviation during redirected walking","authors":"Mahdi Azmandian, M. Bolas, Evan A. Suma","doi":"10.1145/2628257.2628352","DOIUrl":"https://doi.org/10.1145/2628257.2628352","url":null,"abstract":"Redirected Walking is technique that leverages human perception characteristics to allow locomotion in virtual environments larger than the tracking area. Among the many redirection techniques, some strictly depend on the user's current position and orientation, while more recent algorithms also depend on the user's predicted behavior. This prediction serves as an input to a computationally expensive search to determine an optimal path. The search output is formulated as a series of gains to be applied at different stages along the path. An example prediction could be if a user is walking down a corridor, a natural prediction would be that the user will walk along a straight line down the corridor, and she will choose one of the possible directions with equal probability. In practice, deviations from the expected virtual path are inevitable, and as a result, the real world path traversed will differ from the original prediction. These deviations can not only force the search to select a less optimal path in the next iteration, but also in cases cause the users to go off bounds, requiring resets, causing a jarring experience for the user. We propose a method to account for these deviations by modifying the redirection gains per update frame, aiming to keep the user on the intended predicted physical path.","PeriodicalId":102213,"journal":{"name":"Proceedings of the ACM Symposium on Applied Perception","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125541491","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: 4

Egocentric distance estimation on a discontinuous ground surface in the virtual environment 虚拟环境中不连续地面上的自心距离估计

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628358

E. Shemetova, Bobby Bodenheimer

引用次数: 0

The influence of shading, display size and individual differences on navigation in virtual reality 阴影、显示尺寸和个体差异对虚拟现实导航的影响

Proceedings of the ACM Symposium on Applied Perception Pub Date : 2014-08-08 DOI: 10.1145/2628257.2628265

L. Hastings, B. Riecke

{"title":"The influence of shading, display size and individual differences on navigation in virtual reality","authors":"L. Hastings, B. Riecke","doi":"10.1145/2628257.2628265","DOIUrl":"https://doi.org/10.1145/2628257.2628265","url":null,"abstract":"Despite extensive usability research on virtual reality (VR) within academia and the increasing use of VR within industry, there is little research evaluating the usability and benefits of VR in applied settings. This is problematic for individuals desiring design principals or best practices for incorporating VR into their business. Furthermore, the literature that does exist often doesn't account for the characteristics of intended users. This shortage is problematic because individual differences have been shown to have a significant impact on performance in spatial tasks. The research presented here is an evaluation of a VR system in use at The Boeing Company, with 28 employees performing navigation and wayfinding tasks across two shading conditions (flat/smooth) and two display conditions (desktop/immersive). Performance was measured based on speed and accuracy. Individual difference factors were used as covariates. Results showed that women and those with high spatial orientation ability performed faster in smooth shading conditions, while flat shading benefited those with low spatial ability particularly for the navigation task. Unexpectedly, immersive presentation did not improve performance significantly. These results demonstrate the impact of individual differences on spatial performance and help determine appropriate tasks, display parameters, and suitable users for the VR system.","PeriodicalId":102213,"journal":{"name":"Proceedings of the ACM Symposium on Applied Perception","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132555170","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: 4