I believe that such a scene with more fingerprint recognition, we must be familiar, very handsome to take out the mobile phone to open Alipay press the fingerprint, but found that the fingerprint has been unrecognizable, yes, we must blame their own oil hand. Let's take a look at the related content with the mobile phone portable Xiaobian.
As the iPhone 5s is equipped with fingerprint unlocking, the corresponding series of applications also use fingerprint as one of the means of security encryption. In addition to being safer and more convenient, it is convenient. Pressing a fingerprint is always faster than losing a password, and when the password is lost. It is necessary to consider whether others will peek. Mobile payment is spread all over the streets of China. The grandfather who sells sweet potatoes has its own unique QR code. If you bring cash, you will be out. The means to support the security of mobile payment is to use the fingerprint recognition of the mobile phone. In addition to the occasional unsuccessful identification and relative security, in general, fingerprint recognition is still used as the mainstream encryption means of the mobile terminal.
The era of brushing face decrypts iPhoneX's face recognition technology
September 2017. Apple held the autumn conference, and every September is the iPhone's new product launch conference. This time is no exception, and even more so, the iPhone 8's "family design". In the era when mobile phones pay attention to face, only Apple dared to use the same design for nearly four years. But what makes the fruit powder a little gratifying is the third new machine: iPhoneX, new design, new look, stunning OLED full screen and Apple Black Technology: Face id, iPhoneX undoubtedly boarded the next day's major media Headline.
The era of brushing face decrypts iPhoneX's face recognition technology
Seeing the iPhoneX map, many people are thinking, where is the Home button, behind the screen? At the bottom of the screen? It’s not right, but completely abandoning the Home button. This classic Apple design is equivalent to BMW’s front face. The kidneys are the same. This time, iPhoneX uses face recognition technology, which is the "face ID" in Apple's official words.
Speaking of face recognition, we must first talk about what is face recognition. Face recognition is a biometric recognition technology based on human facial feature information for identification. A series of related techniques for capturing a face or a video stream with a camera or a camera, and automatically detecting and tracking the face in the image, and then performing face detection on the detected face, which is also commonly called portrait recognition and face recognition. Face recognition began in the 1960s. With the development of computer technology and optical imaging technology, the application phase that really entered the primary stage was in the late 90s, with technologies from the United States, Japan, and Germany. With the development of artificial intelligence and the rapid iterative update of processing, face recognition technology has also made great breakthroughs, and face recognition is also the latest application of biometrics. The realization of its core technology shows the transformation of weak artificial intelligence to strong artificial intelligence. In general, the principle of face recognition is to collect the user's facial data and store it in the database, and then let the machine learn. By collecting the facial data of the object that needs to be unlocked, put it into the database for comparison, and finally complete the unlocking. Advanced algorithms are good for high-precision calculations, but if they are cracked, they will be cracked for life. After all, the face cannot be changed.
The era of brushing face decrypts iPhoneX's face recognition technology
Face recognition appears on the mobile phone is not Apple's first, Android face recognition has appeared a lot of people, Google has added the face recognition function in Android 4.0, but the face recognition at that time is entertainment Lord, a photo can be deceived and does not have security features. At that time, face recognition was mainly limited by two factors: 1. The mobile phone did not have enough space to stack more advanced face recognition sensors; 2. It is also the most critical point: the algorithm has bottlenecks, and it is impossible to calculate the face bumps. Texture, only stay in the 2d plane stage. This is why just a photo can be fooled.
The iPhoneX's little bangs integrates 8 sensors, including 4 for face recognition services. In fact, Apple has already begun to lay out 3D depth sensing components earlier, and acquired an Israeli face recognition company in advance. The new iPhoneX uses the original deep-sensing camera to project 30,000 invisible spots on your face with a dot matrix projector to create a unique look. Combined with the infrared lens to read the depth reflected by these spots, you can quickly scan the 3D structure of the face. Because the human face is not flat, the geometric accuracy of the human face 3D data collected by the face ID can be very high, greatly reducing the error rate. And Face ID face recognition is faster than Touch ID fingerprinting. It can be said that Apple's black technology is very powerful.
The era of brushing face decrypts iPhoneX's face recognition technology
“Face ID†records the depth information of the three-dimensional face, which naturally prevents the face attack methods such as flat paper and video, and because of the characteristics of its dot matrix projector and floodlight, it can be used for human face color and Other materials have better distinguishability and prevent attacks such as masks. Since the face information is obtained by infrared technology, it can theoretically be used under any ambient light conditions.
The mobile phone design trend in 2016 is the metal frame + injection antenna. In 2017, "everyone has a full screen + double camera". By 2018, I predict it is "a true full screen + face recognition". After all, Apple's ability to bring trends It is more than nothing. But at present, the structural light on Apple's "Face id" is as small as the iPhoneX. From the technical principle of structured light, to form a precise three-dimensional model, at least 4-5 frames of video images need to be reconstructed, and it is necessary to ensure that the frequency of the light source transmitter and the camera capture picture frequency are synchronized, which is the frame rate of the ordinary infrared camera. In the case of 25 frames, it takes at least 200 ms to complete the collection of the light source information, and then the point cloud reconstruction is performed by the algorithm for a long time. How to overcome this problem is still unknown. Limited by hardware limitations, the current 3D face data collection is difficult, and the data samples are too small, which brings certain difficulties to the learning and research of face recognition algorithms.
The era of brushing face decrypts iPhoneX's face recognition technology
But it is good for the face recognition experience and has a wide range of application scenarios. In addition to mobile phone unlocking and mobile payment, there are also strong entertainment features, such as Apple's "animoji" and waxwork that creates 3D models of their faces, future virtual dressings, and 3D dolls.
The above is about the face recognition technology of iPhoneX in the era of mobile phone-portable face. If you want to know more information, please pay attention to eeworld, eeworld electronic engineering will provide you with more complete, more detailed and updated. Information.
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