Patent ID: 11902499
Assignee: AIRBUS DEFENCE AND SPACE SAS
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. A simulation method, implemented by electronic circuitry of simulation sighting binoculars further comprising a camera, a screen and a pair of lenses which are arranged to face the screen, the method comprising the following steps:
obtaining a video frame from the camera, the video frame being intended to be displayed by the simulation sighting binoculars in a projection window E3;
obtaining geolocation information for the simulation sighting binoculars and orientation information for the camera;
transmitting the geolocation and orientation information to a simulation platform;
receiving simulation graphical elements and spatial positioning information for three-dimensional virtual objects corresponding to the simulation graphical elements;
carrying out a two-dimensional rendering of the virtual objects depending on the spatial positioning information, in order to display the virtual objects in a projection window E2, and, when a magnification factor is to be applied, keeping dimensions of the projection window E2 fixed and adjusting a field of view of the two-dimensional rendering according to the magnification factor;
superimposing, in a virtual scene which is local to the simulation sighting binoculars, the two-dimensional rendering of the virtual objects in the projection window E2 and the video frames in the projection window E3, the projection window E3 being placed in a plane which is farther from the simulation sighting binoculars than the one where the projection window E2 is placed in the field of view of the simulation sighting binoculars, the simulation sighting binoculars having a line of sight which passes through a center of the projection windows E2 and E3, and, when the magnification factor is to be applied, adjusting the dimensions of the projection window E3 according to the magnification factor;
obtaining a mixed-reality stereoscopic image from superimposing the planes using a pair of virtual cameras reproducing binocular vision which is adapted to the pair of lenses; and
carrying out, on the screen, a right-eye and left-eye display of the obtained mixed-reality stereoscopic image.