Abstract: An information processing method includes: three-dimensional (3D) point information of a 3D point cloud is obtained; a two-dimensional (2D) point cloud image from projection of the 3D point cloud on a horizontal plane is generated based on the 3D point information; and projection coordinates of 3D points comprised in the 3D point cloud in a reference coordinate system of a reference plane graph are determined based on a consistency degree that the 2D point cloud image has with the reference plane graph, where the reference plane graph is used for representing a projection graph with reference coordinates that is obtained through the projection of a target object on the horizontal plane, and the 3D point cloud is used for representing 3D space information of the target object.

Abstract: An electronic face mask control system includes an electronic face mask. The electronic face mask includes an LED screen configured to display images, a first driving device configured to control an operation of the LED screen, a first detecting device connected with the first driving device, and a first storage device connected to the first driving device. The first detecting device is configured to detect control signals. The first storage device is configured to storage local data. By performing signal detection on the first detecting device, a display content controlled by the first driving device is changed, and a display content of the LED screen is changed.

Abstract: An electronic face mask control system includes an electronic face mask. The electronic face mask includes an LED screen configured to display images, a first driving device configured to control an operation of the LED screen, a first detecting device connected with the first driving device, and a first storage device connected to the first driving device. The first detecting device is configured to detect control signals. The first storage device is configured to storage local data. By performing signal detection on the first detecting device, a display content controlled by the first driving device is changed, and a display content of the LED screen is changed.