Teathat tv show Star Trek: The Next Generation Introduced millions to the idea of the holodeck: an immersive, realistic 3D holographic projection of an entire environment that you can interact with and even touch.
In the 21st century, holograms are already being used variety of ways, such as in the medical system, education, arts, security and defence. scientists are still developing methods to use lasers, modern digital processors and motion-sensing technologies to create multiple different types of holograms Which can change the way we communicate.
My colleagues and I, working in the Bendable Electronics and Sensing Technologies Research Group at the University of Glasgow, now developed A system of holograms of people using “aerohaptics”, which creates a sense of touch with a jet of air. Those jets of air give the sensation of touch to people’s fingers, hands, and wrists.
Over time, this can be developed so that you can meet a virtual avatar of a colleague on the other side of the world and actually feel their handshake. It could even be the first step towards creating something like a holodeck.
To create this sense of touch we use economical, commercially available parts to combine computer generated graphics with carefully guided and controlled jets of air.
In some ways, it’s a step ahead of the current generation of virtual reality, which typically requires a headset to deliver 3D graphics, and smart gloves or handheld controllers to provide haptic feedback, a stimulus that responds to tactile feedback. Feels like Most wearable-gadget-based approaches are limited to controlling virtual object which is being displayed.
Controlling a virtual object is not the same feeling you would experience when two people touch. In addition to a prosthetic tactile sensation can provide additional dimension to feel objects without having to wear gloves, and therefore feel much more natural.
using glass and mirrors
Our research uses graphics that provide the illusion of a 3D virtual image. It is a modern variation on the 19th century illusion technique known as the . is referred to as black pepper ghost, which enthralled Victorian theater-goers with supernatural scenes on stage.
The system uses glass and mirrors to create a two-dimensional image to hover over space without the need for any additional equipment. And our haptic feedback is made up of nothing but air.
The mirrors that make up our system are arranged in the shape of a pyramid with an open side. Users place their hands in the open area and interact with computer-generated objects, which appear to be floating in the empty space inside the pyramid. Objects are graphics, created and controlled by a software program called the Unity game engine, that are often used to create 3D objects and worlds in video games.
Located just below the pyramid is a sensor that tracks the movements of users’ hands and fingers, and a single air nozzle, which directs jets of air toward them to create complex sensations of touch. The overall system is guided by electronic hardware that is programmed to control nozzle movements. We have developed an algorithm that allows air nozzles to respond to users’ hand movements with appropriate combinations of direction and force.
One of the ways in which we have demonstrated the capabilities of the “AeroHaptic” system is with an interactive projection of a basketball that can be strongly touched, rolled and bounced. Touch feedback from the air jets from the system is also modified depending on the virtual surface of the basketball, allowing users to feel the round shape of the ball as it rolls through their fingers when they toss it, and when it hits their palm. I slap in the return.
Users can also push the virtual ball with varying force, and perceive the resulting difference in what a hard bounce or soft bounce feels like in their palm. Even something apparently as simple as tossing a basketball requires us to work hard to model the physics of the action and how we can replicate that familiar sensation with a jet of air.
smell of the future
While we do not expect full delivery star trek In the near future holodeck experience, we are already boldly going in new directions to add additional functions to the system. Soon, we expect to be able to modify the temperature of the airflow to allow users to feel hot or cold surfaces. We are also exploring the possibility of adding aroma to the airflow, deepening the illusion of virtual objects, by allowing users to smell as well as touch them.
As the system expands and develops, we expect it to be used in many areas. Providing a more absorbing videogame experience without wearing cumbersome equipment is an obvious one, but it could also allow for more solid teleconferencing. When you collaborate on a project, you can also work in turn to add components to the virtual circuit board.
It can also help clinicians collaborate treatment for patients, and make patients feel more involved and informed in the process. Doctors can see, feel, and discuss characteristics of tumor cells, and show patients plans for a medical procedure.
Ravinder Dahiya is Professor of Electronics and Nanoengineering at the University of Glasgow. This article first appeared on Conversation
Credit: www.independent.co.uk /