The University of Groningen has created an impressive and massive screen, incorporating touch detection technology using six Optitrack v120 slim cameras. These cameras are particularly effective due to their sensitivity to infrared light. To complement the cameras, the system employs 16 inexpensive infrared emitters, typically used in security systems, along with a total of 1000 LEDs.
The touch detection software is distributed across three older computer systems, each equipped with two cameras. An additional computer is tasked with aggregating the output from these detection computers and transmitting the event data to the main visualization system. This setup ensures that the touch detection is both accurate and responsive. Watch the video after the jump to see it all in action.
Construction and Design
The massive curved display is constructed from a 3 mm dark acrylic layer, which is then coated with a diffuser on the front. This design choice not only enhances the visual quality of the display but also ensures durability and longevity. Illumination is provided from behind the display using six full HD projectors. The cameras and the IR-LEDs are also strategically positioned behind the screen, creating a clean and clutter-free working environment at the front. This thoughtful arrangement minimizes distractions and maximizes the user experience.
The use of a curved display offers several advantages. It provides a more immersive experience, allowing users to feel enveloped by the screen. This is particularly beneficial for applications such as data visualization, gaming, and collaborative workspaces. The curvature of the screen also helps in reducing glare and reflections, which can be a common issue with flat screens.
Technical Specifications and Applications
The technical specifications of this massive multitouch screen are quite impressive. The combination of six Optitrack v120 slim cameras and 16 infrared emitters ensures precise touch detection across the entire surface of the screen. The 1000 LEDs provide ample illumination, making the display vibrant and easy to read even in well-lit environments.
The system’s architecture, involving multiple computers for touch detection and data aggregation, highlights the complexity and sophistication of the setup. Each of the three detection computers processes input from two cameras, ensuring that touch points are accurately detected and tracked. The additional computer that combines this data plays a crucial role in maintaining the system’s overall performance and responsiveness.
This multitouch screen has a wide range of potential applications. In educational settings, it can be used for interactive lessons and collaborative projects. In corporate environments, it can serve as a powerful tool for presentations and brainstorming sessions. The screen’s large size and high resolution make it ideal for detailed data visualization, allowing users to interact with complex datasets in a more intuitive and engaging manner.
More information about the display and touch system can be found here.
Via Gadget Lab
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