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Category: virtual reality – Page 16

Flat screen TVs that incorporate quantum dots are now commercially available, but it has been more difficult to create arrays of their elongated cousins, quantum rods, for commercial devices. Quantum rods can control both the polarization and color of light, to generate 3D images for virtual reality devices.

Using scaffolds made of folded DNA, MIT engineers have come up with a new way to precisely assemble arrays of quantum rods. By depositing quantum rods onto a DNA scaffold in a highly controlled way, the researchers can regulate their orientation, which is a key factor in determining the polarization of light emitted by the array. This makes it easier to add depth and dimensionality to a virtual scene.

“One of the challenges with quantum rods is: How do you align them all at the nanoscale so they’re all pointing in the same direction?” says Mark Bathe, an MIT professor of biological engineering and the senior author of the new study. “When they’re all pointing in the same direction on a 2D surface, then they all have the same properties of how they interact with light and control its polarization.”

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This talk is about how you can use wireless signals and fuse them with vision and other sensing modalities through AI algorithms to give humans and robots X-ray vision to see objects hidden inside boxes or behind other object.

Tara Boroushaki is a Ph.D student at MIT. Her research focuses on fusing radio frequency (RF) sensing with vision through artificial intelligence. She designs algorithms and builds systems that leverage such fusion to enable capabilities that were not feasible before in applications spanning augmented reality, virtual reality, robotics, smart homes, and smart manufacturing. This talk was given at a TEDx event using the TED conference format but independently organized by a local community.

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Testing time: To see whether the modified VR headset could accurately record brain activity, the researchers had four participants wear it while opening or closing their eyes on command. There is typically an increase in alpha waves in a person’s brain when their eyes are closed, and the researchers could see this increase in the EEG data recorded by their headset.

They also had the participants wear the headset while playing a custom game designed to trigger a type of brain activity that occurs when a person is preparing for an event. As hoped, the researchers were able to see this activity in the recorded EEG data, too.

Looking ahead: The UT Austin team has started filing the paperwork to patent their tech and say they’d be open to working with VR companies to incorporate it into their systems. They don’t say what it costs to make the soft electrodes, so it’s not clear exactly how much consumers or professionals should expect to pay for a modified VR headset.

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Apple reportedly has several teams working and spending millions on generative AI.

Apple is spending millions of dollars a day to build artificial intelligence tools, according to The Information.

Although Apple considers itself to be its closest competitor, given how it chose to launch Vision Pro when the clamor around AR/VR tech had died down, the scale of investments by Apple is telling of how the tech industry’s pivot to generative AI has affected the company’s outlook, especially with OpenAI’s chatbot ChatGPT taking center stage.

Apple is apparently going hard on developing AI, according to a new report that says it’s investing millions of dollars every day in multiple AI projects to rival the likes of ChatGPT.

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Roblox’s new AI assistant is one of a few new AI tools from the company.

Roblox announced a new conversational AI assistant at its 2023 Roblox Developers Conference (RDC) that can help creators more easily make experiences for the popular social app. The new tool, the Roblox Assistant, builds on previously announced features that let creators build virtual assets and write code with the help of generative AI.

With the Roblox Assistant, creators will be able to type in prompts to do things like generate virtual environments. In one demo, somebody types in “I want to make a game set in ancient ruins,” and Roblox drops in some stones, moss-covered columns, and broken architecture. “Make the… More.

Another AI chatbot, but this seems useful.

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Metalens for AR and VR.

BEIJING, Sept. 8, 2023 /PRNewswire/ — WiMi Hologram Cloud Inc. (NASDAQ: WIMI) (“WiMi” or the “Company”), a leading global Hologram Augmented Reality (“AR”) Technology provider, today announced that a metasurface eyepiece for augmented reality has been developed, which is based on metasurfaces composed of artificially fabricated subwavelength structures. The metasurface eyepiece employs a special optical design and engineered anisotropic optical response to achieve an ultra-wide field of view(FOV), full-color imaging, and high-resolution near-eye display.

At the heart of the WiMi’s metalens are see-through metalens with a high numerical aperture(NA), a large area and broadband characteristics. Its anisotropic optical response allows it to perform two different optical functions simultaneously. First, it can image virtual information, acting as an imaging lens for virtual information. Second, it can transmit light, serving as a transparent glass for viewing a real-world scene. This design allows the transparent metalens to be placed directly in front of the eye without the need for additional optics, resulting in a wider FOV.

Fabrication of metalens is done using nanoimprinting technology, which is capable of fabricating large-area metalens with sub-wavelength structures. First, a mould or template with the desired structure is prepared. Then, the mould or template is contacted with a transparent substrate and the nanoscale structure is transferred by applying pressure and temperature. Through this nanoimprinting process, the subwavelength structure of the metalens is successfully replicated onto the transparent substrate, resulting in the formation of the metalens.

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From pterodactyls flying overhead in a game to virtually applying cosmetics prior to making a purchase, augmented reality and other immersive technologies are transforming how we play, observe, and learn. Cheap and ultra-small light-emitting diodes (LEDs) that enable full-color imaging at high resolution would help immersive displays reach their full potential, but are not currently available.

Now, in a study recently published in Applied Physics Express, a team led by researchers at Meijo University and King Abdullah University of Science and Technology (KAUST) has successfully developed such LEDs. The simplicity of their fabrication, via presently available manufacturing methods, means they could be readily incorporated into modern metaverse applications.

Why is the development of improved LEDs necessary for immersive reality? The realism of augmented and depends in part on resolution, detail, and color breadth. For example, all colors must be evident and distinguishable from one another. Gallium indium nitride semiconductors are versatile materials for LEDs that meet all of these requirements.

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Conclusions: Most studies demonstrated the use of VR to be effective for supporting the treatment of anxiety or depression in a range of settings and recommended its potential as a tool for use in a clinical environment. Even though standalone headsets are much easier to work with and more suitable for home use, the shift from tethered VR headsets to standalone headsets in the mental health environment was not observed. All studies that looked at the use of CBT either in vivo or in a virtual environment found it to be effective in supporting the treatment of anxiety or depression.

Keywords: CBT; anxiety; depression; mental health; virtual reality.

©Nilufar Baghaei, Vibhav Chitale, Andrej Hlasnik, Lehan Stemmet, Hai-Ning Liang, Richard Porter. Originally published in JMIR Mental Health (https://mental.jmir.org), 23.09.2021.

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Like this video about how Viva Vita addresses loneliness and depression in the elderly using VR. Subscribe here: https://freeth.ink/youtube-subscribe-depressionintheelderly.

Watch the next video in our series on virtual reality therapy: https://youtu.be/IZE41KejIBw.

In the United States, about six million people over the age of 65 experience late life depression and about one-third of seniors feel lonely.

Viva Vita is taking a novel approach to addressing both loneliness and depression in the elderly population.

The organization provides virtual reality excursions for seniors to help them break through personal limitations and find enjoyment exploring new settings.

At first glance, virtual reality for seniors might seem like a gimmick, but early studies of VR for depression, chronic pain, and other ailments are quite promising.

Continue reading “VR Trips Help Treat Depression in the Elderly” | >