Application analysis of face recognition

  Face recognition application analysis , It is mainly based on the face comparison of Alibaba cloud visual intelligence open platform 1：1 And face search 1：n Two application interfaces , To explain in many ways .

One 、 Product introduction
​ ​ Face to face comparison 1：1​​： Enter two pictures , compare , Output the similarity of two face images .

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​ ​ Face search 1：n​​： Input a single face image , Compare and search with the face images in the face database built on the platform , Output face pictures with high similarity .

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Two 、 The interface is introduced ：
​ ​ Face to face comparison 1：1​​ 1、 Input supports Alibaba cloud ossURL and base64 Two incoming methods , And you can customize the input image quality score , Used to intercept pictures with poor input quality , So as to control the quality of the picture from the source , And then make the result of face comparison more accurate .
2、 Output the face coordinate frame points in the picture 、 The quality of face pictures 、 The similarity of two faces . How to define two face pictures as the same person ？
That is to judge the face similarity in the output results , for example ：Confidence>=80. This value can be set according to the application scenario , High safety level requirements , You can set a higher threshold .

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​ ​ Face search 1：n​​ 1、 Face search 1：n It is based on the face database established by itself , So the first thing to do is to build a face database , It's free to build the database .
2、 Add face samples , Personally, I think face samples are similar to a folder , Create a folder in the face database , Then save face pictures in the folder , Used to distinguish , This must be built , Face data can only be added after creating face samples .
3、 Add face data , Upload face pictures , After uploading , The returned result is a string of facial feature values , In the later stage, facial feature values are stored in the face database , Not face pictures .
4、 Face search 1：n, Based on the above steps , You can conduct face search , Support millions of face database search . It's still very fragrant . 

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3、 ... and 、 Application scenarios
Face to face comparison 1:1
1、APP Sign in ： Use face comparison 1：1, Can be done APP Login with your personal account , Upload a face image when logging in , And local APP Registered face pictures stored in the database , compare , Complete login authentication .
2、 Witness verification ： Use face comparison 1：1, Complete the comparison between the on-site face image and the face image stored in the ID card chip , At present, hotel check-in is widely used .
Face search 1：n
1、 Time Attendance ： Staff clock in , Mobile 、PC Both ends can be used .
2、 Face brake ： Through face search 1：n, Conduct face recognition and switch on , Community 、 Scenes such as the entrance of the office building .

Welcome to , Later, there will be more applications about Alibaba cloud vision , Welcome to exchange ！