Method and device for controlling projection of wearable apparatus, and wearable apparatus

A device for controlling projection of a wearable apparatus that is provided with a projection component, comprising:

• a 3D acquisition device disposed on the wearable apparatus, configured to acquire a 3D profile of an object as a projection screen;
• a processor;
• and
• a memory that stores instructions, when executed by the processor, configured to perform operations including:
• determining coordinates of vertices of a projection area on the object as the projection screen according to the 3D profile of the object as the projection screen and determining a projection plane according to the determined coordinates of the vertices;
• and
• controlling the projection according to an angle between a center line of an projection view angle of the projection component and the projection plane, a distance between a geometrical center of the projection plane and the projection component, and the 3D profile of the object as the projection screen,
• wherein the instructions when executed by the processor are further configured to correct a display luminance of a projection picture projected in the projection area on the object as the projection screen according to the 3D profile of the object as the projection screen at least by:
• determining an extent of deformation of the projection screen through a calculation operation including an integral operation that is related to the 3D profile of the object as the projection screen;
• and
• adjusting the display luminance of the projection picture according to the extent of deformation of the projection screen.