Use of Video Shadow for Small Group Interaction Awareness on a Large Interactive Display Surface
Use of Video Shadow for Small Group Interaction Awareness on a Large Interactive Display Surface
复制标题
使用视频阴影在大型交互式显示表面上实现小组交互意识
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Masoodian
中科院分区：
文献类型：
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作者：
M. Apperley;L. McLeod;M. Masoodian
本文报道了怀卡托大学大型交互式显示表面（LIDS）项目的一部分所做的工作。LIDS设备的一个应用是分布式会议支持。在这种情况下，大型显示表面被协作站点处的人们用作共享显示器。会议将以共享的演示文档开始，通常是根据需要包含议程项目摘要和详细信息的议程文档。会议期间，将对共享文档进行注释，并添加带有注释和绘图的新页面。为了防止访问冲突并通常调解共享空间的使用，需要提供对其他站点处的人的行为的意识的机制。在我们的系统中，网络摄像头用于捕获板两侧附近的人/人的低分辨率图像。我们不是直接传输图像，而是计算阴影/轮廓。阴影显示在其他屏幕内容“后面”。这提供了位置和即将发生的写入动作的意识，并允许有意指向屏幕上的位置。它还具有以低带宽传输的优点，对低帧速率相对不敏感，并且最小化对屏幕上显示的实质性数据的视觉干扰。
This paper reports work done as part of the Large Interactive Display Surface(LIDS) project at the University of Waikato. One application of the LIDS equipment is distributed meeting support. In this context large display surfaces are used as shared workspaces by people at collaborating sites. A meeting will start with a shared presentation document, typically an agenda document with summary and detail on agenda items as required. During the meeting, annotations will be made on the shared document, and new pages will be added with notes and drawings.To prevent access collisions and generally mediate use of the shared space, mechanisms to provide awareness of actions of people at other sites are required. In our system a web camera is used to capture a low-resolution image of the person/people near the board on each side. Rather than transmit the image directly we compute a shadow/silhouette The shadow is displayed 'behind' other screen content. This provides awareness of position and impending write actions and allows intentional pointing to locations on the screen. It also has the advantages of being transmitted with low bandwidth, being relatively insensitive to low frame rates, and minimizing visual interference with the substantive data being displayed on the screen.