The Amazon Fire Phone's Dynamic Perspective—the acclaimed "3D effect"—works about as if by magic. As you attending at the buzz and move it around, the Fire Buzz watches you back, and changes what you see. It's not voodoo, though. It's crazy camera tech. Here's a afterpiece attending at how it works, even in the dark.
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At its core, Amazon's Dynamic Bend is a facial-recognition and tracking technology agnate to what we've had on smartphone cameras and point-and-shoots for years. You've apparent face-detect auto-focus—most smartphones accept it—and it works abundantly well. You point your camera at a person, it throws a box about their face and focuses the photo at the actual ambit so it's nice and sharp.
The facial-recognition technology Amazon is application takes that aforementioned abstraction to a abundant added adult level. It's not just aggravating to ascertain your face for focus; it needs to clue the position of your face and its movements acutely accurately for a amount of altered uses.
In the flashiest case, apparent at the top of this post, affective your arch moves the map or wallpaper or whatever in foreground of you to actualize a 3D effect. Google even congenital an engine so that the aftereffect can be acclimated to attending about a apple in games. But above the 3D, the cameras watch your face so that a flick or bend of your buzz (or your face) scrolls a webpage or to acknowledge added advice and settings.
To do it, Amazon needs bend on you: It uses four specialized cameras that yield actual authentic abstracts of your head's position abounding times a second. (Jeff Bezos quoted 60 times a second, but just as an example)
The cameras on the Fire Buzz accept a 120 amount field-of-view, abundant added than a accepted 72 amount front-facing camera. As Bezos explained, the added field-of-view lets the Fire Buzz clue a added ambit of motion, after which Dynamic Bend would be impossible.
The Fire Phone's cameras adviser your arch position about to centermost in X, Y, Z coordinates, as able-bodied as the bend of your arch to the larboard or the right. Depending on how abundant your face moves and how bound you can get variations or absolutely altered effects.
In adjustment to accumulate clue of your arch in three dimensions, the buzz needs abstracts from two cameras, abundant like you charge two eyes to apperceive three dimensions. The buzz requires four cameras total—one in anniversary corner—because we all use our phones in altered positions and authority them in altered means depending on the bearings or app. An algorithm determines which two are abiding the best abstracts at any accustomed time.
Additionally, back the 3D affection needs to plan even if we're in darker situations, anniversary of the cameras has bittersweet LEDs that advice the camera see you, even in darkness.
Beyond the hardware, there's a database of millions of faces that Amazon says took years to assemble. The huge database helps the buzz actual accurately analyze a array of altered faces and abstain apocryphal positives. For example, the buzz is traveling to acquisition you even if you're backlit or cutting a hat. And it will not lock assimilate things which attending like faces but aren't, like a three-inch angel of a bedrock brilliant on a poster.
All of this tech is absolutely absorbing and unique, but it charcoal to be apparent if the implementations can be annihilation added than a gimmick. Following some hands-on time with the Fire Buzz we weren't absolutely assertive that getting able to annal with a bend or acknowledge card with a flick absolutely fabricated the buzz better, even admitting it absolutely formed as promised.
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The abundant achievement is that we've alone apparent the beginning. Amazon's Dynamic Bend SDK makes it simple for developers to grab and use this data. It's even got a few adjustment gestures. We'll accept to delay and see if third-parties can use Amazon tech to do what Amazon hasn't: Build some uses for the Dynamic Bend that accomplish us feel like we can't reside after it.
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