Proceedings of the 15th ACM Symposium on Applied Perception最新文献

Comparing input methods and cursors for 3D positioning with head-mounted displays 比较3D定位与头戴式显示器的输入法和光标

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225167

Junwei Sun, W. Stuerzlinger, B. Riecke

引用次数: 19

Effects of anthropomorphic fidelity of self-avatars on reach boundary estimation in immersive virtual environments 沉浸式虚拟环境中自我化身的拟人化保真度对到达边界估计的影响

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225170

Elham Ebrahimi, Andrew C. Robb, Leah S. Hartman, C. Pagano, Sabarish V. Babu

{"title":"Effects of anthropomorphic fidelity of self-avatars on reach boundary estimation in immersive virtual environments","authors":"Elham Ebrahimi, Andrew C. Robb, Leah S. Hartman, C. Pagano, Sabarish V. Babu","doi":"10.1145/3225153.3225170","DOIUrl":"https://doi.org/10.1145/3225153.3225170","url":null,"abstract":"Research has shown that self-avatars (life-size representations of the user in Virtual Reality (VR)) can affect how people perceive virtual environments. In this paper, we investigated whether the visual fidelity of a self-avatar affects reach boundary perception, as assessed through two variables: 1) action taken (or verbal response) and 2) correct judgment. Participants were randomly assigned to one of four conditions: i) high-fidelity self-avatar, ii) low-fidelity self-avatar, iii) no avatar (end-effector), and iv) real-world as reference task group. Results indicate that all three VR viewing conditions were significantly different from real world in regards to correctly judging the reachability of the target. However, based on verbal responses, only the \"no avatar\" condition had a non-trivial difference with real world condition. Taken together with reachability data, participants in \"no avatar\" condition were less likely to correctly reach to the reachable targets. Overall, participant performance improved after completing a calibration phase with feedback, such that correct judgments increased and participants reached to fewer unreachable targets.","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122161810","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: 21

Judging action capabilities in augmented reality 判断增强现实中的行动能力

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225168

Grant D. Pointon, Chelsey Thompson, Sarah H. Creem-Regehr, Jeanine K. Stefanucci, Miti Joshi, Richard A. Paris, Bobby Bodenheimer

{"title":"Judging action capabilities in augmented reality","authors":"Grant D. Pointon, Chelsey Thompson, Sarah H. Creem-Regehr, Jeanine K. Stefanucci, Miti Joshi, Richard A. Paris, Bobby Bodenheimer","doi":"10.1145/3225153.3225168","DOIUrl":"https://doi.org/10.1145/3225153.3225168","url":null,"abstract":"The utility of mediated environments increases when environmental scale (size and distance) is perceived accurately. We present the use of perceived affordances---judgments of action capabilities---as an objective way to assess space perception in an augmented reality (AR) environment. The current study extends the previous use of this methodology in virtual reality (VR) to AR. We tested two locomotion-based affordance tasks. In the first experiment, observers judged whether they could pass through a virtual aperture presented at different widths and distances, and also judged the distance to the aperture. In the second experiment, observers judged whether they could step over a virtual gap on the ground. In both experiments, the virtual objects were displayed with the HoloLens in a real laboratory environment. We demonstrate that affordances for passing through and perceived distance to the aperture are similar in AR to those measured in the real world, but that judgments of gap-crossing in AR were underestimated. These differences across two affordances may result from the different spatial characteristics of the virtual objects (on the ground versus extending off the ground).","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121671460","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: 21

Deep learning of biomimetic visual perception for virtual humans 虚拟人仿生视觉的深度学习

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225161

Masaki Nakada, Honglin Chen, Demetri Terzopoulos

{"title":"Deep learning of biomimetic visual perception for virtual humans","authors":"Masaki Nakada, Honglin Chen, Demetri Terzopoulos","doi":"10.1145/3225153.3225161","DOIUrl":"https://doi.org/10.1145/3225153.3225161","url":null,"abstract":"Future generations of advanced, autonomous virtual humans will likely require artificial vision systems that more accurately model the human biological vision system. With this in mind, we propose a strongly biomimetic model of visual perception within a novel framework for human sensorimotor control. Our framework features a biomechanically simulated, musculoskeletal human model actuated by numerous skeletal muscles, with two human-like eyes whose retinas have spatially nonuniform distributions of photoreceptors not unlike biological retinas. The retinal photoreceptors capture the scene irradiance that reaches them, which is computed using ray tracing. Within the sensory subsystem of our model, which continuously operates on the photoreceptor outputs, are 10 automatically-trained, deep neural networks (DNNs). A pair of DNNs drive eye and head movements, while the other 8 DNNs extract the sensory information needed to control the arms and legs. Thus, exclusively by means of its egocentric, active visual perception, our biomechanical virtual human learns, by synthesizing its own training data, efficient, online visuomotor control of its eyes, head, and limbs to perform tasks involving the foveation and visual pursuit of target objects coupled with visually-guided reaching actions to intercept the moving targets.","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134131017","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

Evaluating the effects of four VR locomotion methods: joystick, arm-cycling, point-tugging, and teleporting 评估四种VR运动方法的效果:操纵杆、手臂循环、点拖和传送

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225175

Noah Coomer, Sadler Bullard, W. Clinton, B. Sanders

{"title":"Evaluating the effects of four VR locomotion methods: joystick, arm-cycling, point-tugging, and teleporting","authors":"Noah Coomer, Sadler Bullard, W. Clinton, B. Sanders","doi":"10.1145/3225153.3225175","DOIUrl":"https://doi.org/10.1145/3225153.3225175","url":null,"abstract":"In this work we present two novel methods of exploring a large immersive virtual environment (IVE) viewed through a head-mounted display (HMD) using the tracked controllers that come standard with commodity-level HMD systems. With the first method, \"Point-Tugging,\" users reach and pull the controller trigger at a point in front of them and move in the direction of the point they \"tug\" with the controller. With the second method, \"Arm-Cycling,\" users move their arms while pulling the trigger on the hand-held controllers to translate in the yaw direction that their head is facing. We perform a search task experiment to directly compare four locomotion techniques: Joystick, Arm-Cycling, Point-Tugging, and Teleporting. In the joystick condition, a joystick is used to translate the user in the yaw direction of gaze with physical rotations matching virtual rotations. In the teleporting condition, the controllers create an arched beam that allows the user to select a point on the ground and instantly teleport to this location. We find that Arm-Cycling has advantages over the other methods and could be suitable for wide-spread use.","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"87 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133523280","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: 66

Analysis of hair shine using rendering and subjective evaluation 用渲染法和主观评价法分析头发光泽

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3243891

G. Ramesh, M. Turner, Bjoern Schroeder, Franz-Josef Wortmann

引用次数: 0

Effects of virtual acoustics on target-word identification performance in multi-talker environments 多语环境下虚拟声学对目标词识别性能的影响

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225166

Atul Rungta, Nicholas Rewkowski, Carl Schissler, Philip Robinson, Ravish Mehra, Dinesh Manocha

{"title":"Effects of virtual acoustics on target-word identification performance in multi-talker environments","authors":"Atul Rungta, Nicholas Rewkowski, Carl Schissler, Philip Robinson, Ravish Mehra, Dinesh Manocha","doi":"10.1145/3225153.3225166","DOIUrl":"https://doi.org/10.1145/3225153.3225166","url":null,"abstract":"Many virtual reality applications let multiple users communicate in a multi-talker environment, recreating the classic cocktail-party effect. While there is a vast body of research focusing on the perception and intelligibility of human speech in real-world scenarios with cocktail party effects, there is little work in accurately modeling and evaluating the effect in virtual environments. Given the goal of evaluating the impact of virtual acoustic simulation on the cocktail party effect, we conducted experiments to establish the signal-to-noise ratio (SNR) thresholds for target-word identification performance. Our evaluation was performed for sentences from the coordinate response measure corpus in presence of multi-talker babble. The thresholds were established under varying sound propagation and spatialization conditions. We used a state-of-the-art geometric acoustic system integrated into the Unity game engine to simulate varying conditions of reverberance (direct sound, direct sound & early reflections, direct sound and early reflections and late reverberation) and spatialization (mono, stereo, and binaural). Our results show that spatialization has the biggest effect on the ability of listeners to discern the target words in multi-talker virtual environments. Reverberance, on the other hand, slightly affects the target word discerning ability negatively.","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116668654","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: 5

Expanding the sense of touch outside the body 扩展身体外的触觉

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225172

Christopher C. Berger, Mar González-Franco

引用次数: 13

Comparison of unobtrusive visual guidance methods in an immersive dome environment 沉浸式穹顶环境中不显眼的视觉制导方法的比较

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3243888

S. Grogorick, Georgia Albuquerque, J. Tauscher, M. Magnor

引用次数: 8

The semantic space for emotional speech and the influence of different methods for prosody isolation on its perception 情绪言语的语义空间及不同韵律隔离方法对其感知的影响

Proceedings of the 15th ACM Symposium on Applied Perception Pub Date : 2018-08-10 DOI: 10.1145/3225153.3225156

Martin Schorradt, Susana Castillo, D. Cunningham

{"title":"The semantic space for emotional speech and the influence of different methods for prosody isolation on its perception","authors":"Martin Schorradt, Susana Castillo, D. Cunningham","doi":"10.1145/3225153.3225156","DOIUrl":"https://doi.org/10.1145/3225153.3225156","url":null,"abstract":"Normally, when people talk to other people, they communicate not only using specific words, but also with intentional changes in their voice melody, facial expressions, and gestures. Not only is human communication inherently multimodal, it is also multi-layered. That is, it conveys more than simple semantic information, but also passes on a wide variety of social, emotional, and functional (e.g., conversation control) information. Previous work has examined the perception of socio-emotional information conveyed by words and facial expressions. Here, we build on that work and examine the perception of socio-emotional information based solely on prosody (e.g., speech melody, rate, tempo, intensity). To examine the perception of affective prosody, it is necessary to remove all semantics from the speech signal - without changing the prosody! In this paper, we compare several different state-of-the-art methods for removing semantics. We started by recording an audio database containing a German sentence spoken by 11 people in 62 different emotional states. We then removed or masked the semantics using three different techniques. We also recorded the same 62 states for a pseudo-language phrase. Each of these five sets of stimuli were subjected to a semantic differential rating task to derive and compare the semantic spaces for emotions. The results show that each of the methods successfully removed the semantic component, but also changed the perception of the emotional content. Interestingly, the pseudo-word stimuli diverged most from the normal sentences. Furthermore, although each of the filters affected the perception of the sentence in some manner, they did so in different ways.","PeriodicalId":185507,"journal":{"name":"Proceedings of the 15th ACM Symposium on Applied Perception","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125693192","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: 2