Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology最新文献

The asynchronous time warp for virtual reality on consumer hardware 消费类硬件上虚拟现实的异步时间扭曲

Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology Pub Date : 2016-11-02 DOI: 10.1145/2993369.2993375

J. V. van Waveren

{"title":"The asynchronous time warp for virtual reality on consumer hardware","authors":"J. V. van Waveren","doi":"10.1145/2993369.2993375","DOIUrl":"https://doi.org/10.1145/2993369.2993375","url":null,"abstract":"To help create a true sense of presence in a virtual reality experience, a so called \"time warp\" may be used. This time warp does not only correct for the optical aberration of the lenses used in a virtual reality headset, it also transforms the stereoscopic images based on the very latest head tracking information to significantly reduce the motion-to-photon delay (or end-to-end latency). The time warp operates as close as possible to the display refresh, retrieves updated head tracking information and transforms a stereoscopic pair of images from representing a view at the time it was rendered, to representing the correct view at the time it is displayed. When run asynchronously to the stereoscopic rendering, the time warp can be used to increase the perceived frame rate and to smooth out inconsistent frame rates. Asynchronous operation can also improve the overall graphics hardware utilization by not requiring the stereoscopic rendering to be synchronized with the display refresh cycle. However, on today's consumer hardware it is challenging to implement a high quality time warp that is fast, has predictable latency and throughput, and runs asynchronously. This paper discusses the various challenges and the different trade-offs that need to be considered when implementing an asynchronous time warp on consumer hardware.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"121 1","pages":"37-46"},"PeriodicalIF":0.0,"publicationDate":"2016-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82249095","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: 76

Multiphase surface tracking with explicit contouring 具有显式轮廓的多相表面跟踪

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: 10.1145/2671015.2671017

Xiaosheng Li, Xiaowei He, Xuehui Liu, Baoquan Liu, E. Wu

引用次数: 2

Virtualized welding: a new paradigm for tele-operated welding 虚拟焊接:远程操作焊接的新范例

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: 10.1145/2671015.2671136

Bo Fu, Yukang Liu, Yuming Zhang, Ruigang Yang

引用次数: 0

FishEyA: live broadcasting around 360 degrees fishheya: 360度全方位直播

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: 10.1145/2671015.2671135

E. Canessa, L. Tenze

引用次数: 1

A view from the hill: where cross reality meets virtual worlds 从山上看:交叉现实与虚拟世界相遇的地方

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: 10.1145/2671015.2671138

C. Davies, Alan Miller, C. Allison

引用次数: 4

I'm in VR!: using your own hands in a fully immersive MR system 我在虚拟现实中!:在完全沉浸式MR系统中使用自己的双手

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: 10.1145/2671015.2671123

F. Tecchia, Giovanni Avveduto, R. Brondi, M. Carrozzino, M. Bergamasco, L. Alem

引用次数: 50

Desktop virtual reality for emergency preparedness: user evaluation of an aircraft ditching experience under different fear arousal conditions 桌面虚拟现实应急准备:不同恐惧唤醒条件下飞机迫降体验的用户评价

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: 10.1145/2671015.2671025

L. Chittaro, Fabio Buttussi, Nicola Zangrando

引用次数: 28

Towards real-time credible and scalable agent-based simulations of autonomous pedestrians navigation 面向实时、可信和可扩展的基于智能体的自主行人导航仿真

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: 10.1145/2671015.2671030

Patrick Simo Kanmeugne, A. Beynier

{"title":"Towards real-time credible and scalable agent-based simulations of autonomous pedestrians navigation","authors":"Patrick Simo Kanmeugne, A. Beynier","doi":"10.1145/2671015.2671030","DOIUrl":"https://doi.org/10.1145/2671015.2671030","url":null,"abstract":"In this paper, we focus on real-time simulation of autonomous pedestrians navigation. We introduce a Macroscopic-Influenced Microscopic (MIM) approach which aims at reducing the gap between microscopic and macroscopic approaches by providing credible walking paths for a potentially highly congested crowd of autonomous pedestrians. Our approach originates from a least-effort formulation of the navigation task, which allows us to consistently account for congestion at every level of decision. We use the multi-agent paradigm and describe pedestrians as autonomous and situated agents who plan dynamically for energy efficient paths and interact with each other through the environment. The navigable space is considered as a set of contiguous resources that agents use to build their paths. We emulate the dynamic path computation for each agent with an evolutionary search algorithm, especially designed to be executed in real-time, individually and autonomously. We have compared an implementation of our approach with the ORCA model, on low density and high density scenarios, and obtained promising results in terms of credibility and scalability. We believe that ORCA model and other microscopic models could be easily extended to embrace our approach, thus providing richer simulations of potentially highly congested crowd of autonomous pedestrians.","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":"127-136"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74349604","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

Dual sensor filtering for robust tracking of head-mounted displays 头戴式显示器鲁棒跟踪的双传感器滤波

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: 10.1145/2671015.2675694

Nicholas T. Swafford, B. Boom, K. Subr, David Sinclair, D. Cosker, Kenny Mitchell

引用次数: 1

Accelerating vision-based 3D indoor localization by distributing image processing over space and time 通过在空间和时间上分布图像处理来加速基于视觉的3D室内定位

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: 10.1145/2671015.2671018

D. Yun, Hyunseok Chang, T. V. Lakshman

{"title":"Accelerating vision-based 3D indoor localization by distributing image processing over space and time","authors":"D. Yun, Hyunseok Chang, T. V. Lakshman","doi":"10.1145/2671015.2671018","DOIUrl":"https://doi.org/10.1145/2671015.2671018","url":null,"abstract":"In a vision-based 3D indoor localization system, conducting localization of user's device at a high frame rate is important to support real-time augment reality applications. However, vision-based 3D localization typically involves 2D keypoint detection and 2D-3D matching processes, which are in general too computationally intensive to be carried out at a high frame rate (e.g., 30 fps) on commodity hardware such as laptops or smartphones. In order to reduce per-frame computation time for 3D localization, we present a new method that distributes required computation over space and time, by splitting a video frame region into multiple sub-blocks, and processing only a sub-block in a rotating sequence at each video frame. The proposed method is general enough that it can be applied to any keypoint detection and 2D-3D matching schemes. We apply the method in a prototype 3D indoor localization system, and evaluate its performance in a 120m long indoor hallway environment using 5,200 video frames of 640x480 (VGA) resolution and a commodity laptop. When SIFT-based keypoint detection is used, our method reduces average and maximum computation time per frame by a factor of 10 and 7 respectively, with a marginal increase of positioning error (e.g., 0.17 m). This improvement enables the frame processing rate to increase from 3.2 fps to 23.3 fps.","PeriodicalId":93673,"journal":{"name":"Proceedings of the ACM Symposium on Virtual Reality Software and Technology. ACM Symposium on Virtual Reality Software and Technology","volume":"88 1","pages":"77-86"},"PeriodicalIF":0.0,"publicationDate":"2014-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79514362","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