Recently, the dining hall of Hangzhou No.11 Middle School began to eat with a brush face, which can generate a nutrition report on students' daily eating.

There is a "face brush" in front of each window in the student canteen, which is equipped with a camera and can be operated by touch screen. At first glance, it is similar to an ordinary tablet computer. Students will be identified as long as they stand in front of the "face brush" for one second. Then, the dining information such as name, meal card balance and set meal type will appear on the screen. Click "OK", that is, after the checkout is completed, you can get the delicious food handed over by the canteen master.

This is version 3.1 of the Wisdom Canteen in Hangzhou No.11 Middle School. The previous version 2.1 has been able to complete ordering and payment through mobile phone WeChat, but you need a card in the process of picking up meals. On the basis of version 2.1, version 3.1 adds the function of face recognition, so that students can authenticate to take meals just by lining up to brush their faces, and no longer need to bring cards. At the same time, the nutrition report generated according to students' daily meals has been sent to parents once a month instead of once a week.

Zhang Guanchao, vice president of the school, said that the smart canteen was upgraded this semester because the teachers found that there were a lot of "little horses and big ha", about 51 students forgot to bring their meal cards every day, and some even lost their meal cards directly. The most exaggerated one actually lost three meal cards in one semester. Therefore, after the version 3.1 of the Smart Canteen was launched on the week, high school students said: From now on, my mother no longer has to worry that I forgot my card.

version 3.1 of Smart Canteen actually associates each student's student ID with his IC card, and everyone's photo is also associated with the student ID. When the camera takes a photo of the student, it will read the photos in the database. Successful photo matching means successful matching with the IC card, so the information in the IC card can be called naturally. Therefore, the recharge is still charged to the IC card, but this IC card is already a virtual IC card, it is just a card number and account number.

"I think it's quite convenient to brush my face, so I don't need to bring my meal card." Xiao Yu, a senior one boy, was whispering with his classmates with a dish. However, because I just started trying, some interesting little situations will happen at the scene from time to time, which makes people laugh:

For example, a boy stood in front of the "face brush" for a while, but he was not recognized. "Is it because I am not good-looking, so I refuse to recognize me?" The boy joked that he had enjoyed himself before making his classmates laugh. He smiled and immediately jumped out of the dining information on the screen. "It turned out that it just deliberately denied me and wanted me to laugh."

The other boy was recognized in a second, but the system prompted him to be in the wrong line. "Oh, I ordered the D package, how did it get to the window of the C package, or did it have a good memory!" The boy quickly moved to the next window.

In order to ensure that the instrument can accurately identify all the students in the school, students were advised to put different POSE and different expressions when entering photos, such as serious face, smiling face and slightly sideways face. In this way, no matter whether you are serious or smiling, positive or side face, you will be recognized as long as you meet the "face brush".

in addition to changing photos, it is possible to use cartoon heads in the future-all the input and recognition are real photos, but the cartoon heads are displayed on the instrument.

The school is going to verify the speed and accuracy of swiping the card by brushing the face for dinner, and then it will be used to brush the face for attendance. Because elective classes are implemented in high schools, teachers are very critical of the attendance of students who leave classes. Every day, if students from different administrative classes are not named, there will be management loopholes, and it will be a waste of time if they are named one by one. Brush face attendance, saving roll call time means increasing class time.