Visibility event navigation method and system

Abstract

A method of visibility event navigation includes receiving, via processing circuitry of a client device, a first visibility event packet from a server, the first visibility event packet including information representing 3D surface elements of an environmental model that are occluded from a first viewcell and not occluded from a second viewcell, the first and second viewcells representing spatial regions of a specified navigational route within a real environment modeled by the environmental model. The method also includes acquiring, surface information representing the visible surfaces of the real environment at a sensor and determining, a position in the real environment by matching the surface information to the visibility event packet information. The method further includes transmitting, the position from the client device to the server and receiving a second visibility event packet from the server if the at least one position is within the specified navigational route.

1 . A method of visibility event navigation, including one or more visibility event packets located at a server, the one or more visibility event packets including visibility event packet information representing 3D surface elements of a geospatial model that are occluded from a first viewcell and not occluded from a second viewcell, the first and second viewcells representing spatial regions of a navigational route within a real environment modeled by the geospatial model, comprising:
 receiving, via processing circuitry of a client device, at least one visibility event packet of the one or more visibility event packets from the server;   detecting, via the circuitry, surface information representing one or more visible surfaces of the real environment at a sensor in communication with the client device;   calculating, via the circuitry, at least one position of the client device in the real environment by matching the surface information to the visibility event packet information corresponding to a first visibility event packet of the one or more visibility event packets;   transmitting, via the circuitry, the at least one position from the client device to the server; and   receiving, via the circuitry, at least one second visibility event packet of the one or more visibility event packets when the at least one position is within the navigational route at the client device from the server.