Mediated Reality Viewpoint Alignment Using Geotags
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Solution Overview
Problem
Existing mediated reality (MR) systems face inaccuracies in positioning digital representations of real-world objects or assets, especially when global navigation satellite systems (GNSS) are not functional, leading to usability issues and potential errors in applications like construction and asset management.
Innovation Solution
The method involves using geotags, such as QR codes, RFID tags, or Bluetooth beacons, to determine the position and orientation of an MR device within a physical space. By capturing geotags and tracking movements, the system aligns the MR device's viewpoint with a virtual position and pose in the mediated reality space, ensuring accurate display of geospatial data relative to real-world objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If geotags are used to determine position and orientation of MR device, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent introduces geotags as intermediary objects placed in the physical environment to mediate between the MR device and the coordinate system. These geotags contain encoded position and orientation information that the MR device can capture and use to determine its viewpoint without requiring complex internal processing or additional hardware
Solution Approach 2:
The patent creates a copy of coordinate system information by encoding position and orientation data into geotags that can be captured by the MR device. This allows the device to obtain accurate spatial reference information from external sources rather than relying on complex internal sensing and calculation systems
2Reliability
If multiple geotags are captured to determine orientation, then positioning reliability is improved, but processing time increases
Solution Approach 1:
The patent allows the system to function with partial information by determining orientation from one or more captured geotags. The system can establish a valid viewpoint even when not all geotags are captured, using the available subset of geotags to provide sufficient spatial reference for accurate positioning
Data Source
AI summary
A system and method for setting a viewpoint of a mediated reality (MR) device. A physical space including one or more geotags each communicating a position of such geotag in the physical space. The method including: determining a plurality of possible positions of the MR device in a coordinate system representing the physical space by determining a relative angle and distance to one or more of the geotags captured by the MR device; determining an orientation of the MR device in the coordinate system representing the physical space using the position information communicated by the one or more geotags; determining a position from the plurality of possible positions of the MR device, in the coordinate system representing the physical space, using the determined orientation of the MR device; and determining a viewpoint by aligning the determined position and orientation to a virtual position and pose in mediated reality space.