METHOD AND SYSTEM FOR DETERMINING THE LOCATION OF THE USER Russian patent published in 2021 - IPC G06T7/73 G06K9/00 

FIELD: information technology.

SUBSTANCE: method for determining the location of the mobile apparatus of the user comprises the stages of: receiving a user request for determining the location thereof, containing at least one image from the camera of the mobile apparatus of the user and the GNSS coordinates of the mobile apparatus; determining the expected area of location of the user based on the received GNSS coordinates of the mobile apparatus by finding the three-dimensional model of the environment; determining a global descriptor for said image; determining at least one similar image in the determined three-dimensional model of the environment based on the obtained global descriptor; calculating singular points and calculating two-dimensional local descriptors therefor on the image of the user request; comparing the local descriptors; based on the result of comparison, defining a subset of singular points wherefor a projection of three-dimensional points is present on the three-dimensional model of the environment; determining the three-dimensional coordinates and the rotation of the camera of the mobile apparatus relative to the coordinate system of the three-dimensional model of the environment.

EFFECT: increase in the accuracy and speed of determining the location of the mobile apparatus of the user.

13 cl, 6 dwg