XR device and method for controlling the same

An extended reality (XR) device comprising:

• a communication module configured to communicate with a Head-Mounted Display (HMD) that is worn by a user to provide the user with Virtual Reality (VR) content;
• a camera configured to receive an image of a first space including the user;
• and
• a processor configured to transmit VR content to the HMD through the communication module,
• wherein the processor is further configured to:
• recognize a position of the user and positions of real-world objects within the image of the first space, create a first tree structure composed of nodes corresponding to the real-world objects,
• store the first tree structure in a memory of the XR device, wherein the nodes include information about positions and sizes of the real-world objects,
• determine whether the user moves closer to at least one of the real-world objects by a predetermined distance or less using the first tree structure,
• when the user moves closer to the at least one of the real-world objects by the predetermined distance or less, warn the user of a possibility of collision with the at least one of the real-world objects,
• recognize bounding-boxes of the real-world objects within the image,
• determine whether the user has moved closer to at least one of the bounding-boxes of the real-world objects by a predetermined distance or less,
• recognize a bounding-box of at least one body part of the user within the image, and
• determine whether the bounding-box of the at least one body part moves closer to at least one of the bounding-boxes of the real-world objects by a predetermined distance or less.