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Floating displays that allow users to reach in and manipulate visuals, reminiscent of the technology seen in the Iron Man films, are progressing toward reality. Researchers have developed an innovative device that produces interactive 3-D graphics accessible without the need for a VR headset. This advancement could pave the way for enhanced educational tools, dynamic museum exhibits, and engaging 3-D artworks or video games.
Traditionally, 3-D objects were rendered through rapid movement of screens that displayed 2-D slices, merging visually into a singular shape. However, this approach was limited in interaction. Elodie Bouzbib, a researcher in human-computer interaction, stated, “It’s like a real 3-D object. You can see it from all directions,” but acknowledged the risk of injury when attempting to touch the high-speed screens.
To overcome these challenges, Bouzbib and her team from the Public University of Navarre in Pamplona, Spain, replaced traditional screens with elastic strips akin to those used in stretchy pants. This setup allows users to engage with virtual objects by reaching through the oscillating strips, coordinating with cameras that track hand movements for manipulation of the graphics.
In experimental trials, eighteen participants used both their fingers and a 3-D mouse to control virtual objects. The results showed that individuals could make selections and move objects with greater speed and precision using their fingers. Many participants expressed the experience as more intuitive, with some commenting on the surprisingly pleasant tactile feel of the elastic strips, describing a soft touch that has a ticklish sensation.
The device is scheduled for demonstration on April 30 at the CHI Conference on Human Factors in Computing Systems in Yokohama, Japan. “What excites me about this research is the display’s size and interactivity,” remarked Tatsuki Fushimi, an engineer from the University of Tsukuba, Japan, who works with 3-D graphics generated by sound waves. He noted that while his own displays allow for touch, their physical dimensions are often restricted due to the nature of their technology.
This new elastic band display measures 19 centimeters wide and 8 centimeters deep, roughly the size of a small Tupperware container. Fushimi encouraged experimentation with the device, suggesting varied applications, from control panels in surgical robots to 3-D product views for online shopping.
However, scaling the elastic band display to larger dimensions comes with challenges. Fushimi pointed out potential limitations—speculating on the impracticality of a room-sized display where users could no longer reach through. Yet, he envisioned possibilities for desktop-size devices that could facilitate new interactions.
Furthermore, Bouzbib expressed aspirations to incorporate haptic feedback, potentially through focused ultrasound beams that generate tactile sensations at users’ fingertips while interacting with virtual items. Her team continues to explore exciting alternatives, including projecting images onto a gas layer, which could enhance interaction with mid-air graphics.
Source
www.sciencenews.org