iPhone X face recognition technology analysis
On September 12th, local time, Apple held an autumn conference at the Jobs Theatre, releasing iPhoneX, iPhone 8/8 Plus, 4K Apple TV and Apple Watch 3. Among them, iPhoneX as a tenth anniversary gift, using OLED full screen (accounting for 81.15%), built-in 64-bit architecture A11 and embedded M11 sports coprocessor, cancel the Home button, use Face ID to unlock.
Some people have to say: no new ideas, full screen, double camera, wireless charging, chasing Chinese manufacturers to run, "Liu Haier" ugly. Admittedly, for the consumer market, the design concept of smart phones has become more and more serious. Cook, who is from industrial engineering and enterprise management, is difficult to provide surprises in aesthetics. However, the AI+AR strategy behind iPhoneX may be worthy of attention.
The following are the dry goods presented by the smart internal reference:
Face ID: Must have or new layout?
Conflict between full screen and fingerprint recognition
Since the end of 2016, the competition of mobile phone display has been pushed to the aspect ratio of 18:9 or 18.5:9, 19:9 and 20:9 under the promotion of Samsung, Xiaomi and LG. Especially the launch of Xiaomi MIX and Samsung S8, making high-screen ratio "full screen" has become the latest trend of high-end mobile phones.
The 162th intelligent internal reference pointed out that the comprehensive screen is not as simple as replacing a larger display panel, but the system engineering of redesigning the components such as the panel, fingerprint recognition, receiver, front camera, antenna, etc., will drive the mobile phone components to occur. Great change.
At present, the mainstream scheme for fingerprint recognition of mobile phones is a capacitive scheme, and it is difficult for signals to penetrate glass of 0.3 mm or more. Therefore, fingerprint recognition is only a viable alternative to the rear (Samsung S8) and Under Display (optical and ultrasonic) in the full screen era. The former has a poor experience and the latter has insufficient technical maturity.
Premeditated 3D vision
In May 2017, Business Insider broke the news that more than 1,000 engineers in Apple are working on the development of 3D cameras.
The result of the final release is: iPhone X can wake up the screen by raising hands or clicking, using neural network technology and A11's biological engine, plus the depth of field perception of the TrueDepth camera system above the screen, its infrared emitter can launch 30,000 At the detection point, Apple realized a high-precision face recognition mobile phone with an error of less than one in 100,000, which is Face ID.
Face ID as a milestone use case for Apple's 3D vision technology, behind the careful layout of nearly 7 years: on the one hand to acquire excellent companies in the industry, to carry out technical layout and ecological construction, on the other hand to continuously optimize technology, issue patents, and carry out patent layout .
Through the acquisition of the structural light pioneer PrimeSense (Microsoft Kinect 1 generation, China XTIon and other solution providers), Apple mastered the core technology of 3D vision and promoted its 3D somatosensory sensing technology to miniaturization. Through the acquisition of multiple companies such as Linx (multi-camera technology), Faceshift (facial expression recognition technology), EmoTIent, Flyby Media, RealFace (face recognition technology), Apple has built a complete ecosystem for 3D vision.
In April 2015, the US Patent Office announced the patent for Apple's 3D gesture control technology, a 3D machine vision system that accurately recognizes human gestures. With this technique, the user's gestures can be accurately identified by specialized algorithms.
In October 2015, Apple's patent on gestures and facial recognition reappeared. When users interact with other video-related applications (such as video), they can save specific objects in the video image as local by simple gestures. Image, which requires 3D vision technology to complete.
In July 2016, Apple announced a new patent for 3D gesture control, a 3D image projector embedded in an iOS device such as an iPhone that recognizes the user's gestures and can be used as a game. Joystick or controller.
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