Bentley Systems, Inc.

Marc-André Bouvrette

Stéphane Côté

Danny Lebel

In one embodiment, a technique for providing absolute orientation of a mobile device involves aligning the orientation sensor of the mobile device with the Earth's coordinate system. An initial orientation from the orientation sensor of the mobile device is accessed, a user is prompted to move the mobile device in a direction of the initial orientation, and using a position sensor, a set of position information that describes positions of the mobile device is captured while the mobile device is being moved in the direction. Based on the set of position information, a vector of movement is determined. Using the vector of movement, an orientation difference is calculated between the Earth's coordinate system and a coordinate system of the mobile device. Upon demand, an absolute orientation of the mobile device may be produced by accessing a live orientation from the orientation sensor and adding the orientation difference.

Technique for alignment of a mobile device orientation sensor with the earth's coordinate system

In one embodiment, an augmented reality application executing on an augmented reality device accesses a representation of the physical environment. The augmented reality application aligns information that describes near-ground features with the representation of the physical environment. After alignment, the augmented reality application generates an augmented reality view that is displayed on a display device by projecting the near-ground features onto the ground in the representation of the physical environment, generating a virtual plane above the ground that is parallel to the ground and separated therefrom by a distance, projecting the near-ground features onto the virtual plane above the ground, and showing an indicator of visual correspondence that connects at least a portion of the projection of near ground features on the ground and a corresponding portion of the projection of near-ground features on the virtual plane above the ground.

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Québec, Canada

Marc-André Bouvrette