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Using artificial intelligence to generate 3D hologram projector in real-time

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Using artificial intelligence to generate 3D hologram projector in real-time

Despite years of hype, virtual reality headsets have yet to topple TV or computer screens as the go-to devices for video viewing. One reason: VR can make users feel sick. Nausea and eye strain can result because VR creates an illusion of 3D viewing although the user is in fact staring at a fixed-distance 2D display. The solution for better 3D visualization could lie in a 60-year-old technology remade for the digital world: holograms.

Hologram projector deliver an exceptional representation of 3D world around us. Plus, they’re beautiful. (Go ahead — check out the holographic dove on your Visa card.) Holograms offer a shifting perspective based on the viewer’s position, and they allow the eye to adjust focal depth to alternately focus on foreground and background.

Researchers have long sought to make computer-generated holograms, but the process has traditionally required a supercomputer to churn through physics simulations, which is time-consuming and can yield less-than-photorealistic results. Now, MIT researchers have developed a new way to produce holograms almost instantly — and the deep learning-based method is so efficient that it can run on a laptop in the blink of an eye, the researchers say.

“People previously thought that with existing consumer-grade hardware, it was impossible to do real-time 3D holography computations,” says Liang Shi, the study’s lead author and a PhD student in MIT’s Department of Electrical Engineering and Computer Science (EECS). “It’s often been said that commercially available holographic displays will be around in 10 years, yet this statement has been around for decades.”

Shi believes the new approach, which the team calls “tensor holography,” will finally bring that elusive 10-year goal within reach. The advance could fuel a spillover of holography into fields like VR and 3D printing.

Shi worked on the study, published today in Nature, with his advisor and co-author Wojciech Matusik. Other co-authors include Beichen Li of EECS and the Computer Science and Artificial Intelligence Laboratory at MIT, as well as former MIT researchers Changil Kim (now at Facebook) and Petr Kellnhofer (now at Stanford University).

The quest for better 3D

A typical lens-based photograph encodes the brightness of each light wave — a photo can faithfully reproduce a scene’s colors, but it ultimately yields a flat image.

In contrast, a hologram encodes both the brightness and phase of each light wave. That combination delivers a truer depiction of a scene’s parallax and depth. So, while a photograph of Monet’s “Water Lilies” can highlight the paintings’ color palate, a hologram can bring the work to life, rendering the unique 3D texture of each brush stroke. But despite their realism, holograms are a challenge to make and share.

First developed in the mid-1900s, early holograms were recorded optically. That required splitting a laser beam, with half the beam used to illuminate the subject and the other half used as a reference for the light waves’ phase. This reference generates a hologram’s unique sense of depth.  The resulting images were static, so they couldn’t capture motion. And they were hard copy only, making them difficult to reproduce and share.

Computer-generated holography sidesteps these challenges by simulating the optical setup. But the process can be a computational slog. “Because each point in the scene has a different depth, you can’t apply the same operations for all of them,” says Shi. “That increases the complexity significantly.” Directing a clustered supercomputer to run these physics-based simulations could take seconds or minutes for a single holographic image. Plus, existing algorithms don’t model occlusion with photorealistic precision. So Shi’s team took a different approach: letting the computer teach physics to itself.

They used deep learning to accelerate computer-generated holography, allowing for real-time hologram generation. The team designed a convolutional neural network — a processing technique that uses a chain of trainable tensors to roughly mimic how humans process visual information. Training a neural network typically requires a large, high-quality dataset, which didn’t previously exist for 3D holograms.

The team built a custom database of 4,000 pairs of computer-generated images. Each pair matched a picture — including color and depth information for each pixel — with its corresponding hologram. To create the holograms in the new database, the researchers used scenes with complex and variable shapes and colors, with the depth of pixels distributed evenly from the background to the foreground, and with a new set of physics-based calculations to handle occlusion. That approach resulted in photorealistic training data. Next, the algorithm got to work.

By learning from each image pair, the tensor network tweaked the parameters of its own calculations, successively enhancing its ability to create holograms. The fully optimized network operated orders of magnitude faster than physics-based calculations. That efficiency surprised the team themselves.

“We are amazed at how well it performs,” says Matusik. In mere milliseconds, tensor holography can craft holograms from images with depth information — which is provided by typical computer-generated images and can be calculated from a multicamera setup or LiDAR sensor (both are standard on some new smartphones). This advance paves the way for real-time 3D holography. What’s more, the compact tensor network requires less than 1 MB of memory. “It’s negligible, considering the tens and hundreds of gigabytes available on the latest cell phone,” he says.

The research “shows that true 3D holographic displays are practical with only moderate computational requirements,” says Joel Kollin, a principal optical architect at Microsoft who was not involved with the research. He adds that “this paper shows marked improvement in image quality over previous work,” which will “add realism and comfort for the viewer.” Kollin also hints at the possibility that holographic displays like this could even be customized to a viewer’s ophthalmic prescription. “Holographic displays can correct for aberrations in the eye. This makes it possible for a display image sharper than what the user could see with contacts or glasses, which only correct for low order aberrations like focus and astigmatism.”

“A considerable leap”

Real-time 3D holography would enhance a slew of systems, from VR to 3D printing. The team says the new system could help immerse VR viewers in more realistic scenery, while eliminating eye strain and other side effects of long-term VR use. The technology could be easily deployed on displays that modulate the phase of light waves. Currently, most affordable consumer-grade displays modulate only brightness, though the cost of phase-modulating displays would fall if widely adopted.

Three-dimensional holography could also boost the development of volumetric 3D printing, the researchers say. This technology could prove faster and more precise than traditional layer-by-layer 3D printing, since volumetric 3D printing allows for the simultaneous projection of the entire 3D pattern. Other applications include microscopy, visualization of medical data, and the design of surfaces with unique optical properties.

“It’s a considerable leap that could completely change people’s attitudes toward holography,” says Matusik. “We feel like neural networks were born for this task.”

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Kanye West Merch

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Kanye West Merch

Kanye West is a popular rapper, musician, and clothing designer. He has many fans, who adore his music and fashion. Recently, Kanye West Merch has started selling merchandise on his website. His fans have been eagerly buying it up. The merchandise includes T-shirts, hoodies, hats, and other items. Some of the designs feature popular lyrics from Kanye’s songs. Other items feature graphics or designs that are inspired by Kanye’s music or fashion sense. So far, the feedback from fans has been positive. They love the quality of the materials used and the designs of the items. They also appreciate that they can buy merchandise that is exclusive to Kanye West Merch website. If you’re a fan of Kanye West, be sure to check out his online store for some great merch.

Kanye West Hoodie

Kanye West is a hip-hop artist who has gained worldwide popularity. He is known for his unique style, and many of his fans love to imitate it. If you’re looking for a way to show your support for Kanye West and look good at the same time, consider buying a Kanye West hoodie. Hoodies are a great way to keep warm in the winter, and there are many different styles available. You can find hoodies that feature Kim Kardashian, North West, or any other of Kanye’s famous family members. You can also find hoodies with the lyrics from some of Kanye’s most popular songs. No matter what style you choose, you’ll be sure to look cool and stylish when wearing a Kanye West hoodie. Kanye West is one of the most popular and influential rappers in the world. His music is expressive and unique, and his fashion sense is always on point. If you’re a fan of Kanye West, you’ll love this hoodie! It’s made from high-quality materials and it looks great. It’s perfect for a cool autumn day or a winter evening.

Kanye West Shirt

In anticipation of his upcoming Saint Pablo tour, Kanye West has released a new line of merch. The line includes a shirt that is gaining a lot of attention. The shirt bears the phrase “I Feel Like Pablo”, which was popularized by Kanye on Twitter. Fans are already rushing to get their hands on the shirt, and many are saying that it will be a hot commodity during the tour. Whether you’re a fan of Kanye or not, this shirt is sure to turn some heads. Be sure to check out the rest of the line, which includes hats, jackets, and more! As a Kanye West fan, I was excited when I saw he was selling shirts on his website. I quickly went to the website to buy one. However, when I got there, I was disappointed to find that the shirt cost $90! That’s way too expensive for a T-shirt. I’m sure Kanye could do better than that.

Kanye West Sweatshirt

Kanye West’s influence in popular culture is undeniable. From his early days as a hip-hop artist to his recent foray into fashion design, Ye has always been one step ahead of the curve. His latest album, “The Life of Pablo,” was released in February 2016 and spawned hits like “Famous” and “Father Stretch My Hands Pt. 1.” If you’re looking for some new Kanye West gear to show your support for the rapper, check out our selection of sweatshirts. Made from 100% cotton, these hoodies are comfortable and keep you warm on those cold days or nights. They’re also machine-washable so they’re easy to take care of – perfect if you’re on the go! Whether you’re listening to Ye’s latest album or just hanging out with friends, these Kanye West sweatshirts will let everyone know that you’re a fan of the artist extraordinaire! Order yours today! (Sharing an exciting giveaway opportunity here as well if available)

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6 Home Remedies to Relieve TMJ Pain

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6 Home Remedies to Relieve TMJ Pain

Talking, laughing, smiling, and chewing are all jaw movements that you make daily without much thought. However, these simple movements can cause much pain if you have temporomandibular joint dysfunction (TMJ). TMJ Leander discomfort may have a significant impact on your quality of life.

Teeth grinding is a common cause of temporomandibular joint disorders (TMJD), which can cause chronic pain and stiffness in the jaw, among other symptoms. There are a variety of therapies available to assist you to ease your discomfort.

Here are some home remedies to treat TMJ;

1.  Eat soft meals

 To prevent your jaws from overworking, eat soft meals like mashed potatoes, yogurt, mashed potatoes, soup, cottage cheese, salmon,   scrambled eggs, cooked fruits and vegetables, beans, and grains. Avoid Hard and crunchy foods (such as pretzels, hard rolls, and raw carrots) and chewy foods (like taffy and caramels). In addition, avoid chewing gum.

2.      Wear a bite guard

A bite guard (also known as a stabilizing splint) can protect your teeth from clenching or grinding. Bite guards are typically made of plastic, and they fit over your lower and upper teeth to keep them from rubbing together. Bite guards come in various styles; for example, you can wear a firm or soft bite guard.

Consult your physician or dentist to determine how long you should wear the bite guard. If the bite guard is causing you discomfort or changing the way you bite, stop using it immediately and consult your doctor.

3.  Use heat or cold therapy

Applying wet, warm heat packs or ice packs to your jaw might assist in relaxing the muscles in your face and jaw. Your doctor will tell you how long to leave the ice pack or heat pack on and where to put them.

4.      Learn to manage stress

Stress is one of the leading causes of TMJ. When people are worried, they tend to clench their jaws unconsciously throughout the day. If you are stressed, go for a walk daily to clear your thoughts, write down your concerns in a notebook, talk to a psychologist, try yoga, meditate, or soak in a bubble bath. Make every effort to relax and enjoy yourself.

5.      Limit jaw movement

Your jaw may strain your jaw if you yawn, scream, or sing at the top of your lungs frequently. To give your Temporomandibular a respite from movement, try to limit any severe jaw motions in your daily life. This may help to alleviate some of your discomforts.

6.      Try acupuncture or massage therapy

TMJ discomfort can also be relieved with acupuncture. The acupuncturist will insert needles in places surrounding your jaw and other areas to ease pain and enhance jaw function, enabling you to open your mouth easily. In addition, gently rubbing your TMJ joint can also help ease up the muscles surrounding your jaw and relieve pain.

Temporomandibular joint disorders may cause severe headaches, grinding and locking in your jaws, ringing in your ears, and neck pain. Fortunately, you may treat TMJ pain using home remedies. However, if the pain persists, you should seek further medical treatment. Contact Pendleton Orthodontics to book your appointment for TMJ treatment.

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Benefits of Regularly Visiting a General Practitioner

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Benefits of Regularly Visiting a General Practitioner

Regularly seeing a primary care physician may positively impact your health. Your trusted general practitioner (GP), Dr. Kalpana Desai is well-versed in dealing with various medical conditions and may tailor treatment to meet your requirements. You have a solid partnership when you have a long-term connection with a professional who treats the person, not just the condition. There are several additional reasons why it is a good idea to have a regular general practitioner, including:

Someone who understands you

GPs are typically the initial point of contact for your health. Having a regular GP gives them the chance to know you and develop a better grasp of your medical history. Every time you go to the doctor, you do not have to describe your medical history. The more often someone sees their primary care physician, the more likely they are to be open and honest with their doctor about their health. They believe that their concerns are taken into account.

An experienced general practitioner (GP) will be able to spot any problems with your health right away and recommend the right course of action. As soon as a problem becomes severe, persistent, or even life-threatening to the patient, the doctor takes measures to prevent it.

Integrated health care

If you have a medical problem that necessitates the participation of additional health care providers, your general practitioner is your primary point of contact. If a medical expert or allied health practitioners like a psychologist or podiatrist is necessary, this might be the first step.

Advice on health and wellness from a professional

Your general practitioner is your best bet when diagnosing and treating different health-related issues. In addition, they are likely to be the initial point of contact for most health difficulties you encounter in your lifetime. In addition to treating colds and flu, they are one of the most acceptable sources of science-based advice on maintaining a healthy lifestyle and avoiding illness in the first place!

A complete medical history kept in one place

Every time you see a local doctor, they take down essential information about your health, such as your family medical history, results of medical tests, prescriptions for drugs, allergies, etc. Regularly seeing your doctor ensures that your medical history is thorough, accurate, and up-to-date. When you visit your doctor, they will consult your medical file, and if you have been to more than one doctor, your information spreads out. As a consequence, your medical issues may be misdiagnosed and treated inappropriately.

General practitioners can identify and treat a wide range of common health issues. They might refer you to specialists if your problem is outside their practice area.

Accessibility

Because regular doctors are accessible at times convenient to you, you will have to wait less time for an appointment with them. You can expect to be seen within a few hours after seeking an appointment with a regular GP rather than a few days. Patients should expect to be seen on time by most frequent GPs, and the time spent in the waiting area will be substantially less than when visiting a different doctor.

You and your family’s health and well-being are best served by seeing a general practitioner regularly. Choosing a GP may be a complex process that requires a lot of trial and error. Finding a doctor with whom you are comfortable and who can work on your health for the long term is critical.

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