Since last year, face recognition has gradually become the standard for flagship smart phones. Some mobile phones that do not even have face recognition function can also realize face recognition through system upgrades. Therefore, as long as there is a front camera, your phone can Realize face recognition! Technically speaking, currently there are only two types of mobile phones on the market that support face recognition. One is the iPhone 3, which uses 3D structured light technology; the other is a common 2D person used on most Android phones. Face recognition. From a security perspective, the iPhone X using 3D structured light technology has a higher security factor. The recently released Xiaomi 8 has become the first Android mobile phone to adopt 3D structured light technology. However, this feature is only supported by the exploration version. The version uses infrared face unlocking technology. Although the infrared face unlock and 3D structure light looks "tough", the technical level is certainly more difficult to 3D structure light, but Lei Jun introduced the ordinary version of the millet 8 face unlock is more useful than ordinary smart phones, then infrared people What is the difference between face unlocking and ordinary face recognition? In addition to conventional devices such as cameras, proximity sensors, and earpieces, Xiaomi 8's regular edition also incorporates infrared lighting components and infrared cameras. It is these two devices that have unlocked the infrared face of Xiaomi 8. Its working principle is to use a special infrared light source to actively emit infrared light to the human body and receive infrared light reflected from the human body for imaging. Compared to other smartphones, face unlocking of Xiaomi 8 is not affected by light. However, ordinary smartphones must have light (sun, light, self-timer lamp, screen brightness, etc.) assistance when performing face recognition, otherwise face recognition cannot be achieved. Unlock. In addition to being unaffected by light, Xiaomi also has the function of living detection, and its security is also higher than that of traditional mobile phones that use the front camera for face recognition. If you don’t believe it, you can use your photos (paper, electronic) Try to unlock, you will find it very low security, even a video, a 3D printed mask can also unlock the phone. In addition, Xiaomi 8's infrared face unlock also supports the "sunglasses unlocked", that is, sunglasses can also unlock the phone, this is mainly because of infrared light penetration, can penetrate the sunglasses lens scan face information, which is traditional mobile phone to do Less than that. The experience is better and the security is higher. This may be the face recognition function that users want. Do you think so?
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