Patent ID: 11961256
Assignee: 3I INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An indoor localization method performed in a 3D tour providing server operating in conjunction with a user device, the method comprising:
opening a 3D tour comprising a plurality of panoramic images;
receiving a first perspective image captured by a camera provided in the user device;
calculating global features for the first perspective image and each of the plurality of panoramic images included in the 3D tour;
selecting a most similar panoramic image to the first perspective image by using the calculated global features;
computing an indoor location corresponding to a location of the camera on the 3D tour by using feature points included in the selected panoramic image and the first perspective image; and
providing the computed indoor location to the user device.