Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology最新文献_第3页

A multi-resolution approach for adapting close character interaction 一种适应近距离角色交互的多分辨率方法

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671020

Edmond S. L. Ho, He Wang, T. Komura

引用次数: 12

On the benefits of stereo graphics in virtual obstacle avoidance tasks 论立体图形在虚拟避障任务中的优势

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671133

J. A. Bærentzen, Rasmus Stenholt

引用次数: 0

Illumination independent marker tracking using cross-ratio invariance 基于交叉比不变性的光照无关标记跟踪

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671119

V. Agnus, S. Nicolau, L. Soler

引用次数: 2

AnyHaptics: a haptic plug-in for existing interactive 3D graphics applications AnyHaptics:用于现有交互式3D图形应用程序的触觉插件

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671118

Deok-Jae Song, Jinah Park

引用次数: 3

Threefolded motion perception during immersive walkthroughs 在沉浸式攻略过程中的三重运动感知

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671026

G. Bruder, Frank Steinicke

{"title":"Threefolded motion perception during immersive walkthroughs","authors":"G. Bruder, Frank Steinicke","doi":"10.1145/2671015.2671026","DOIUrl":"https://doi.org/10.1145/2671015.2671026","url":null,"abstract":"Locomotion is one of the most fundamental processes in the real world, and its consideration in immersive virtual environments (IVEs) is of major importance for many application domains requiring immersive walkthroughs. From a simple physics perspective, such self-motion can be defined by the three components speed, distance, and time. Determining motions in the frame of reference of a human observer imposes a significant challenge to the perceptual processes in the human brain, and the resulting speed, distance, and time percepts are not always veridical. In previous work in the area of IVEs, these components were evaluated in separate experiments, i. e., using largely different hardware, software and protocols.\u0000 In this paper we analyze the perception of the three components of locomotion during immersive walkthroughs using the same setup and similar protocols. We conducted experiments in an Oculus Rift head-mounted display (HMD) environment which showed that subjects largely underestimated virtual distances, slightly underestimated virtual speed, and we observed that subjects slightly overestimated elapsed time.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"28 1","pages":"177-185"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78457003","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: 29

Optimum design of haptic seat for driving simulator 驾驶模拟器触觉座椅的优化设计

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671134

O. Halabi, Mariam Ba Hameish, Latefa T. Al-Naimi, A. Kaabi

引用次数: 2

A hand posture recognition system utilizing frequency difference of infrared light 一种利用红外光频差的手部姿势识别系统

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671114

Soonchan Park, Moonwook Ryu, Ju Yong Chang, Jiyoung Park

{"title":"A hand posture recognition system utilizing frequency difference of infrared light","authors":"Soonchan Park, Moonwook Ryu, Ju Yong Chang, Jiyoung Park","doi":"10.1145/2671015.2671114","DOIUrl":"https://doi.org/10.1145/2671015.2671114","url":null,"abstract":"Hand gesture is one of the most effective methods to perform interactions between humans and also between humans and computers. However, currently existing depth cameras do not provide sufficient resolution and precision for effectively recognizing hand postures in distance (>2 meters). Existing researches tried to solve the limitation by using a combination of depth information and color information. However, they all could not have stable performance, because the color information is naturally affected by visible light condition. In this paper, we introduce a hardware system and an algorithm to recognize hand postures of a distant user while guaranteeing its performance even in the dark. Specifically, by utilizing infrared(IR) lights and their frequency difference, our system simultaneously gathers a depth map from Kinect and a high resolution IR image of a scene from an additional IR camera without any interference. The system analyzes the IR image of a hand using histogram of oriented gradients and support vector machine. In addition, the recognition system has a technique to compensate errors of hand position estimation unavoidable in any hand detection algorithms. As a result, from the experiment on real-time data, the proposed system classifies seven different hand postures with an average precision rate of 92.17% and the precision rate is maintained in the dark (<5 lux) with an average precision rate of 93.28%.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"99 1","pages":"65-68"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76341287","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

Navigating immersive virtual environments through a foot controller 通过足部控制器导航沉浸式虚拟环境

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671121

M. Carrozzino, Giovanni Avveduto, F. Tecchia, Pavel Gurevich, Benjamin Cohen

引用次数: 12

Robust random dot markers: towards augmented unprepared maps with pure geographic features 鲁棒随机点标记:面向具有纯粹地理特征的增强未准备地图

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671022

Liming Yang, Jean-Marie Normand, G. Moreau

{"title":"Robust random dot markers: towards augmented unprepared maps with pure geographic features","authors":"Liming Yang, Jean-Marie Normand, G. Moreau","doi":"10.1145/2671015.2671022","DOIUrl":"https://doi.org/10.1145/2671015.2671022","url":null,"abstract":"Augmented maps have many important applications. However, no mature registration method exists to associate unprepared maps with a Geographical Information System (GIS) database which would be used to superimpose simulation results or route display on a paper map. In this paper, we propose a method called Robust Random Dot Markers (RRDM) that can robustly track coplanar random dot patterns, which can be used to address this problem. RRDM is based on the same idea of the Random Dot Markers (RDM) proposed by [Uchiyama and Saito 2011] and it can serve as fiducial markers as well as texture independent \"natural markers\". We conduct a series of experiments and show that RRDM is more robust than RDM in terms of jitter, perspective distortion, under and over detection of dots in the pattern. As an example of \"natural marker\", we show that RRDM can successfully register unprepared printed maps only with pure geographic features, i.e. road intersections coordinates, which we retrieve from a GIS. Our method does not suffer from the drawbacks of traditional \"feature-point\" based registration methods which mainly based on textures, since textures may change according to different maps.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"1 1","pages":"45-54"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79783184","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: 6

Third person view and guidance for more natural motor behaviour in immersive basketball playing 第三人称视角和指导更自然的运动行为在沉浸式篮球比赛

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2014-11-11 DOI: 10.1145/2671015.2671023

A. Covaci, A. Olivier, F. Multon

{"title":"Third person view and guidance for more natural motor behaviour in immersive basketball playing","authors":"A. Covaci, A. Olivier, F. Multon","doi":"10.1145/2671015.2671023","DOIUrl":"https://doi.org/10.1145/2671015.2671023","url":null,"abstract":"The use of Virtual Reality (VR) in sports training is now widely studied with the perspective to transfer motor skills learned in virtual environments (VEs) to real practice. However precision motor tasks that require high accuracy have been rarely studied in the context of VE, especially in Large Screen Image Display (LSID) platforms. An example of such a motor task is the basketball free throw, where the player has to throw a ball in a 46cm wide basket placed at 4.2m away from her. In order to determine the best VE training conditions for this type of skill, we proposed and compared three training paradigms. These training conditions were used to compare the combinations of different user perspectives: first (1PP) and third-person (3PP) perspectives, and the effectiveness of visual guidance. We analysed the performance of eleven amateur subjects who performed series of free throws in a real and immersive 1:1 scale environment under the proposed conditions. The results show that ball speed at the moment of the release in 1PP was significantly lower compared to real world, supporting the hypothesis that distance is underestimated in large screen VEs. However ball speed in 3PP condition was more similar to the real condition, especially if combined with guidance feedback. Moreover, when guidance information was proposed, the subjects released the ball at higher - and closer to optimal - position (5-7% higher compared to no-guidance conditions). This type of information contributes to better understand the impact of visual feedback on the motor performance of users who wish to train motor skills using immersive environments. Moreover, this information can be used by exergames designers who wish to develop coaching systems to transfer motor skills learned in VEs to real practice.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"13 1","pages":"55-64"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88458733","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: 30