Method for displaying virtual object and electronic device

A method for displaying a virtual object, performed by an electronic device having a display and a camera, wherein the method comprises:

• obtaining a global submap and storing the global submap in a simultaneous localization and mapping (SLAM) system of the electronic device, wherein the global submap is a submap corresponding to a location of the electronic device in a global map;
• performing pose calculation based on a video image collected by the camera and the global submap, to obtain pose data of the electronic device;
• and
• displaying the virtual object on the display based on the pose data of the electronic device.

An electronic device for displaying a virtual object, comprising:

• a display, a camera, one or more processors, a memory, a plurality of applications, and one or more computer programs, wherein the one or more computer programs are stored in the memory, the one or more computer programs comprise instructions, and when the instructions are executed by the electronic device, the electronic device is enabled to perform the following steps:
• detecting an operation by a user to start an application;
• in response to the operation, downloading a global submap and storing the global submap in a simultaneous localization and mapping (SLAM) system of the electronic device, wherein the global submap is a submap corresponding to a location of the electronic device in a global map;
• and
• displaying a location and a posture of the virtual object on the display, wherein the location and the posture of the virtual object are calculated by the SLAM system by performing pose calculation based on at least a video image collected by the camera and the global submap.