What is the principle of Amazon's mobile phone 3D visual interface?

What is the principle of Amazon's mobile phone 3D visual interface?
This feature, called "Dynamic Perspective" by Amazon, is the biggest secret weapon of Fire Phone. But how does it do it? It turns out that Fire Phone has a total of six lenses. In addition to the ordinary front and back lenses, there are four small wide-angle (120-degree viewing angle) lenses in the four corners of the front of the screen, which are specifically used for the dynamic perspective function. Only any two of these four small lenses can locate the face, but the design team took into account that different grips may block the lenses in different positions, so four small lenses were made inside. Even at night when there is insufficient light, these small lenses can still operate with infrared signals. With this face tracking function, Fire Phone can display different pictures according to the position of your face. For example, when looking at the Empire State Building, you can see different sides of the building from different angles, which has a three-dimensional effect. Web browsing can also use the ability of dynamic perspective to scroll web pages when turning the phone. Because it does not use gravity as a sensor, you can correctly judge the scrolling even if you are lying in bed. In addition to these two apps, Amazon has also opened up its API to third-party developers. What other amazing apps can be developed from here? Will there be more immersive games? Let's wait and see!

As a winner of Toutiao's Qingyun Plan and Baijiahao's Bai+ Plan, the 2019 Baidu Digital Author of the Year, the Baijiahao's Most Popular Author in the Technology Field, the 2019 Sogou Technology and Culture Author, and the 2021 Baijiahao Quarterly Influential Creator, he has won many awards, including the 2013 Sohu Best Industry Media Person, the 2015 China New Media Entrepreneurship Competition Beijing Third Place, the 2015 Guangmang Experience Award, the 2015 China New Media Entrepreneurship Competition Finals Third Place, and the 2018 Baidu Dynamic Annual Powerful Celebrity.

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