Field calibration of an augmented reality device

A method performed by an augmented reality (AR) device, the method comprising:

• configured to perform a field-based recalibration procedure, the AR device comprising:
• receiving, via a communication interface, ground truth map data for a real-world environment from an external source, the ground truth map data having been generated by one or more other computing devices operating with accurate calibration;
• generating map data for the real-world environment by processing images obtained from one or more image sensors and motion data from an Inertial Measurement Unit (IMU);
• detecting a possible calibration error by comparing the map data for the real-world environment with the ground truth map data received from the external source;
• in response to detecting the possible calibration error, evaluating a rule to determine that a recalibration procedure is to be executed;
• and
• executing the recalibration procedure by generating visual cues and displaying the visual cues via the display, the visual cues prompting a user of the AR device to traverse a path in the real-world environment, and to look in specific directions while traversing the path, during the recalibration procedure.

One or more memory storage devices storing instructions thereon, which, when executed by one or more processors of an augmented reality (AR) device, cause the AR device to perform a method comprising:

• receiving, via a communication interface, ground truth map data for a real-world environment from an external source, the ground truth map data having been generated by one or more other computing devices operating with accurate calibration;
• generating map data for the real-world environment by processing images obtained from one or more image sensors and motion data from an Inertial Measurement Unit (IMU);
• detecting a possible calibration error by comparing the map data for the real-world environment with the ground truth map data received from the external source;
• in response to detecting the possible calibration error, evaluating a rule to determine that a recalibration procedure is to be executed;
• and
• executing the recalibration procedure by generating visual cues and displaying the visual cues via the display, the visual cues prompting a user of the AR device to traverse a path in the real-world environment, and to look in specific directions while traversing the path, during the recalibration procedure.