System and method for preventing and controlling myopia of children based on time-of-flight 3D modeling technology

The invention discloses a system and a method for preventing and controlling the myopia of children based on the time-of-flight 3D modeling technology. The system comprises a distance measuring unit,a controller, a TOF unit, a face feature matching unit and a screen backlight control module. According to the invention, distance measurement is carried out firstly, 3D modeling is carried out on theuser through the TOF unit and the point cloud model is outputted when the distance between the user and the electronic equipment is close, and then whether the outputted point cloud model is a face is identified subsequently. If the face is judged, the brightness of the screen is actively reduced, and the brightness is automatically recovered after the screen leaves; if it is judged that the faceis not the face, it is indicated that the face leaning in front of the screen is not the face but other objects, and the screen brightness is not changed. 本发明公开了一种基于飞行时间法3D建模技术防控儿童近视的系统及方法，包括：测距单元、控制器、TOF单元、人脸特征匹配单元和屏幕背光控制模块。本