Nowadays, face recognition technology is more and more applied in our life, security, transportation, finance and other fields can see its presence.But do you know what face recognition is?How does it work?

To put it simply, face recognition is actually a biometric technology that analyzes and calculates face features and conducts identity recognition.It is to use camera or camera to collect photos or videos containing human faces, detect and track the human faces, and then achieve the purpose of recognizing and recognizing human faces.

Now that you know what face recognition is, the question is, how does it work?

This is a complex technical problem. Face recognition mainly includes three processes: face detection, feature extraction and face classification.Generally speaking, it is to use face detection to locate some key points of the five features, extract the face features that the computer can recognize, and finally carry out a similarity comparison, so as to get a face recognition result, that is, to determine whether the "face brush" is yourself.

Compared with other biometric technologies, face recognition technology has the following four characteristics:

First, the accuracy is high. Face recognition technology is mainly used to recognize and calculate human face features, identify the similarity of face database samples, and sort them according to probability from high to low. It can also realize the judgment and recognition of multiple faces.

Second, non-contact, face recognition technology does not need direct contact with the device to obtain face images, different from the traditional fingerprint recognition technology.

The third is the unconsciousness. Face recognition technology does not need to cooperate with the acquisition equipment. People will be acquired face images in the unconscious state.

Fourth, it is faster and more efficient than the acquisition cost.

It is because of these characteristics that face recognition technology has been promoted and applied in finance, e-commerce, security and defense, entertainment and other fields in more and more countries, with great potential.In daily life, the application of face recognition technology can be seen everywhere. For example, face is used for network payment, and access control attendance is also widely used for face recognition.

Of course, face recognition technology has its risks.For example, improper collection of Internet companies, face database attacks and theft will cause the leakage of face data.In order to deal with many risks in the application of face recognition technology, it is very important to protect face data and face models in China and improve relevant laws and regulations of biometrics.

Other experts say that face brushing is only one of the more tangible aspects of computer vision.In fact, computer vision technology can bring us much more than simple "face brushing" payment. If applied to the primary and secondary industries, it will bring improvement and reform of production efficiency on a larger level.

In the field of mobile phones and entertainment, image classification and processing based on intelligent recognition have become a reality.In the field of autonomous driving, intelligent awareness of the environment, positioning the vehicle automatically judge the target, is also in continuous development;New progress has been made in the application of automatic obstacle avoidance in the field of uav and robot.In the industrial field, in addition to the eye-catching exploratory applications such as 3D sorting, the application of product quality inspection is also constantly emerging.In the medical field, robots developed based on artificial intelligence such as computer vision technology can not only see medical images, but also assist doctors to understand medical records more accurately and improve the level of diagnosis and treatment.