发布求助
文献互助 智能选刊 最新文献

Journal of Virtual Reality and Broadcasting最新文献

筛选
英文 中文
Using Opaque Image Blur for Real-Time Depth-of-Field Rendering and Image-Based Motion Blur 使用不透明图像模糊实时景深渲染和基于图像的运动模糊
Journal of Virtual Reality and Broadcasting Pub Date : 2013-12-04 DOI: 10.2013/3819
M. Kraus
{"title":"Using Opaque Image Blur for Real-Time Depth-of-Field Rendering and Image-Based Motion Blur","authors":"M. Kraus","doi":"10.2013/3819","DOIUrl":"https://doi.org/10.2013/3819","url":null,"abstract":"While depth of field is an important cinematographic means, its use in real-time computer graphics is still limited by the computational costs that are necessary to achieve a sufficient image quality. Specifically, color bleeding artifacts between objects at different depths are most effectively avoided by a decomposition into sub-images and the independent blurring of each sub-image. This decomposition, however, can result in rendering artifacts at silhouettes of objects. We propose a new blur filter that increases the opacity of all pixels to avoid these artifacts at the cost of physically less accurate but still plausible rendering results. The proposed filter is named “opaque image blur” and is based on a glow filter that is applied to the alpha channel. We present a highly efficient GPUbased pyramid algorithm that implements this filter for depth-of-field rendering. Moreover, we demonstrate that the opaque image blur can also be used to add motion blur effects to images in real time.","PeriodicalId":285068,"journal":{"name":"Journal of Virtual Reality and Broadcasting","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132897627","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
Head Tracking Based Avatar Control for Virtual Environment Teamwork Training 基于头部跟踪的虚拟环境团队训练虚拟化身控制
Journal of Virtual Reality and Broadcasting Pub Date : 2012-12-31 DOI: 10.5220/0003364702570269
Stefan Marks, John A. Windsor, Burkhard Wünsche
{"title":"Head Tracking Based Avatar Control for Virtual Environment Teamwork Training","authors":"Stefan Marks, John A. Windsor, Burkhard Wünsche","doi":"10.5220/0003364702570269","DOIUrl":"https://doi.org/10.5220/0003364702570269","url":null,"abstract":"JVRB, 9(2012), no. 9. - Virtual environments (VE) are gaining in popularity and are increasingly used for teamwork training purposes, e.g., for medical teams. One shortcoming of modern VEs is that nonverbal communication channels, essential for teamwork, are not supported well. We address this issue by using an inexpensive webcam to track the user's head. This tracking information is used to control the head movement of the user's avatar, thereby conveying head gestures and adding a nonverbal communication channel. We conducted a user study investigating the influence of head tracking based avatar control on the perceived realism of the VE and on the performance of a surgical teamwork training scenario. Our results show that head tracking positively influences the perceived realism of the VE and the communication, but has no major influence on the training outcome.","PeriodicalId":285068,"journal":{"name":"Journal of Virtual Reality and Broadcasting","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128019647","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: 11
Quasi-Convolution Pyramidal Blurring 准卷积金字塔模糊
Journal of Virtual Reality and Broadcasting Pub Date : 2009-03-18 DOI: 10.5220/0001094401550162
M. Kraus
{"title":"Quasi-Convolution Pyramidal Blurring","authors":"M. Kraus","doi":"10.5220/0001094401550162","DOIUrl":"https://doi.org/10.5220/0001094401550162","url":null,"abstract":"JVRB, 6(2009), no. 6. - Efficient image blurring techniques based on the pyramid algorithm can be implemented on modern graphics\u0000hardware; thus, image blurring with arbitrary blur width is possible in real time even for large images. However, pyramidal blurring methods do not achieve the image quality provided by convolution filters; in particular, the shape of the corresponding filter kernel\u0000varies locally, which potentially results in objectionable rendering artifacts. In this work, a new analysis filter is designed that significantly reduces this variation for a particular pyramidal blurring technique. Moreover, the pyramidal blur algorithm is generalized to allow for a continuous variation of the blur width. Furthermore, an efficient implementation for programmable graphics hardware is presented. The proposed method is named “quasi-convolution pyramidal blurring” since the resulting effect is very close to image blurring based on a convolution filter for many applications.","PeriodicalId":285068,"journal":{"name":"Journal of Virtual Reality and Broadcasting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130107091","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: 8
Adaptive Cube Tessellation for Topologically Correct Isosurfaces 拓扑正确等值面的自适应立方体镶嵌
Journal of Virtual Reality and Broadcasting Pub Date : 2008-03-20 DOI: 10.5220/0002073602120219
Francisco Velasco, J. Torres, Alejandro León, Francisco Ortin
{"title":"Adaptive Cube Tessellation for Topologically Correct Isosurfaces","authors":"Francisco Velasco, J. Torres, Alejandro León, Francisco Ortin","doi":"10.5220/0002073602120219","DOIUrl":"https://doi.org/10.5220/0002073602120219","url":null,"abstract":"A communication system architecture (SA) for a vehicle which may be integrated into the vehicle's multiplexed electronic component communication system, and a process for communicating with the vehicle to provide information for and about the vehicle's operational status and coordinating the vehicle's activities. The communication system will include a multi-functional antenna system for the vehicle that will have the capability to receive AM/FM radio and television signals, and transmit and receive citizens band (CB) radio signals, satellite and microwave and cellular phone communications. The antenna may be installed as original equipment or as a back-fit part in the after-market. In either case the multi-functional antenna will be integrated with the vehicle's multiplexed electronic component communication system. The process for communicating with the vehicle will involve a communication service for which the vehicle's driver will enroll for and service will continue so long as maintenance fees are paid. The service will be capable of providing various levels of information transfer and coordination. The levels may include vehicle information such as (1) the need for servicing and location of the nearest service center with the necessary parts in stock, (2) routing, and (3) load brokering and coordination. The modular design of the system architecture (SA) will allow it to be employed with the vehicle platform that does not possess a full multiplexed electronic component communications system. The resulting vehicle, using an after-market application package, will be able to participate in some of the services.","PeriodicalId":285068,"journal":{"name":"Journal of Virtual Reality and Broadcasting","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122965465","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: 7
System Architecture of a Mixed Reality Framework 混合现实框架的系统架构
Journal of Virtual Reality and Broadcasting Pub Date : 2007-01-03 DOI: 10.5220/0001354902000207
H. Seibert, P. Dähne
{"title":"System Architecture of a Mixed Reality Framework","authors":"H. Seibert, P. Dähne","doi":"10.5220/0001354902000207","DOIUrl":"https://doi.org/10.5220/0001354902000207","url":null,"abstract":"JVRB, 3(2006), no. 7. - In this paper the software architecture of a framework which simplifies the development of applications in the area of Virtual and Augmented Reality is presented. It is based on VRML/X3D to enable rendering of audio-visual information. We extended our VRML rendering system by a device management system that is based on the concept of a data-flow graph. The aim of the system is to create Mixed Reality (MR) applications simply by plugging together small prefabricated software components, instead of compiling monolithic C++ applications. The flexibility and the advantages of the presented framework are explained on the basis of an exemplary implementation of a classic Augmented Realityapplication and its extension to a collaborative remote expert scenario.","PeriodicalId":285068,"journal":{"name":"Journal of Virtual Reality and Broadcasting","volume":"388 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126741148","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信