Adding this feature to your phone allows you to play Pokémon Go

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For a long time, this problem has been plagued by Google engineer Johnny Lee. When we look for something inside a large building, why can't we use a cell phone? Recently, I had a conversation with Johnny Lee when he was traveling in Singapore. He told me that he had lost himself in a big shopping mall. Johnny Lee also said that when he crossed the front door, the phone became useless.

The technology behind

With Tango, mobile phones will be more practical. Tango is a position awareness system. Johnny Lee's job at Google is to develop Tango. After four years of development, Tango has been able to use sensors, computer vision, and graphics processing units to help mobile phones better understand space and movement.

Tango includes three core technologies: regional learning, depth perception, and motion tracking. Together, the Tango phone can learn, remember the surrounding environment, and map the environment; it measures the distance from the phone to the door, wall, or target; when the phone moves in 3D space, it knows where it is. The Tango phone can measure centimeters without relying on external signals such as GPS, Wi-Fi, and Bluetooth.

Because Tango allows the device to accurately measure the position, it can be used not only as an indoor GPS, but also for other purposes. For example, mobile phones can interact with the surrounding environment and virtual objects in novel ways.

If you are purchasing a new sofa, APP can tell us which model is the best match, you can superimpose 3D images on the living room to see how effective it is. If you want to measure the size of a painting, prepare to install a frame for the painting, or want to test the size of a cabinet, and plan to sell it online, Tango can measure the size of the target through tracking technology and 3D perception technology, without the ruler, No tape measure is needed. If you're bored, you can play Phantogeist, a Tango game where ghost-like extraterrestrials emerge from behind the door behind the door and pounce on you. You can also log in to Dinosaurs Among Us, an APP created by the National Museum of American History that relies on the Tango platform. We can place the dinosaurs at home and watch the museum's dinosaur show.

This summer, "Pokemon Go" is prevalent throughout the world, although the role of the game cannot interact with the surrounding environment in a real way. If "Pokemon Go" enters the Tango platform, players can approach cartoon creatures and move around them. Now players can only look directly at creatures at a distance. When we get close to cartoon creatures, it gets bigger and we can also watch from multiple angles. In general, the creatures seen from the Tango phone will be part of the real scene, not floating in the air.

Blair MacIntyre, director of the AR Lab at Georgia Tech, believes that Tango has a huge potential and can derive new AR applications. McIntyre said: "Scanning the world with smart phones has created a variety of possibilities, including some laboratory applications. These applications our researchers can only show in the laboratory, the equipment used is very expensive."

This winter, Lenovo will launch the first Tango device, which is an Android phone called Phab 2 Pro, priced at $ 499. At this moment, companies are looking for ways to combine the virtual world with the real world. There are many ways to achieve the goal, but Tango is the best candidate because of its rich features and ease of use. You may have never heard of Tango, but it is likely to have the necessary features of a smartphone.

Let the device see the world

In fact, mobile AP applications have been around for several years, but Tango is more advanced because it understands the surrounding environment and not just simply superimposes images on the environment. GuidiGO is a start-up company that produces mobile guides for cultural and historical attractions. The company is testing Tango technology. When we visit the museum, we can use mobile phones and tablets to guide. Above the floor, the app displays a route consisting of virtual blue dots that guide the user to their destination. When the visitor arrives at a place, a virtual button will appear in the air. Touching the button will pop up a picture, which is similar to the special effect of the movie. If you visit a gallery in Egypt, it may be an X-ray image of a mummy stone coffin. GuidiGO also developed APPs for ordinary Android phone tablets, iPhones, and iPads. David Lerman, founder and CEO of the company, said that the Tango tour tool developed by the company has an excellent immersive effect.

Like GPS, Tango requires special hardware and software. Once experienced, we will be easy to understand and grasp. Johnny Lee said: "If you ask 2,000 people and ask if they need to put a GPS in their pockets, most people may say they don't need to. If we put the GPS in the phone and use the APP to control the GPS, the user can A better understanding of the surrounding environment. Now when buying a mobile phone, most people will not consider not having a GPS mobile phone."

If you really want to become a basic mobile phone feature, Tango must encourage companies to develop great apps. This work is ongoing. Jeff Meredith, head of Lenovo’s Android business unit, said that when Phab 2 Pro starts selling, there will be about 50 great Tango apps available to users through the Google online store.

Tango hardware will continue to improve. Only in this way can it become popular in mobile phones like GPS. To support Tango, manufacturers must equip their handsets with special equipment, including depth sensors that can measure distances with infrared signals, and fish-eye cameras that have an extra wide viewing angle to track movements.

After installing these components, the phone becomes bulky and the cost increases. Compared with Apple's largest mobile phone, Lenovo Phab 2 Pro is bigger and heavier. The increase in components will also consume more power and generate more heat. In contrast to mobile GPS, it only needs a small chip and antenna.

Once upon a time, GPS components were also very large, just because the technology was widely accepted by the general public and as the time progressed, the components became smaller and smaller. Johnny Lee hopes Tango can follow the same development path. Recently, the Tango team collaborated with Qualcomm to enable the popular Snapdragon processor to support Tango cameras, sensors, and algorithms. If all kinds of Tango functions are integrated in a single chip, and then the chip is provided to the smart phone manufacturers, the space occupied by the components in the mobile phone can be saved, the energy consumption can be reduced, and the technology can be more easily popularized.

Ultimately, if Tango can also access devices other than mobile phones, such as robots and wearable devices, the technology will be more practical if regional image data can be shared. Tango can guide the robot around the furniture and shuttle in the room. Johnny Lee said that in the future we can tell the Tango robot: “Go to the door.” It will quickly understand where he is going.

Our lives depend on numerous devices. If Tango can continuously improve the situational awareness of the device and incorporate new features into today's smart phones, one day we will create a new form of computing.

Source: technologyreview

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