According to the design requirement of the Theme Pavilion of the World Expo 2010, this paper proposes and implements a low-cost multi-touch real-time interactive tabletop system.

针对2010年上海世博会主题馆设计需求，提出并实现一种低成本的多点触摸实时互动桌面系统。

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Float4 Interactive ( www.float4.com), an agency from Quebec, was showing on the trade show floor how they can turn any large screen into a multi-touch interactive system.

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Adaptive AIOs are high-performance computers with large touch-enabled screens that can be used as a multi-user touch gaming system, or as an interactive art creation device, as well as for many other shared, in-person experiences.

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