AR Device Location via Physical Markers in 3D Models
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Solution Overview
Problem
Existing augmented reality systems face challenges in precisely locating a device within a structure to synchronize digital models with physical features, leading to inaccuracies in overlaying hidden structures, which can result in damage during remodeling or maintenance.
Innovation Solution
The use of physical markers such as optical tags and radio beacons, combined with object recognition techniques, to accurately determine the device's position within a structure, allowing for precise alignment of digital models with physical structures, thereby enhancing the precision of augmented reality overlays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional location methods are used in augmented reality systems, then device positioning is simpler and less complex, but location precision and alignment accuracy with physical structures deteriorate
Solution Approach 1:
The patent introduces physical markers (optical tags, radio beacons) as intermediary objects between the device and the physical structure. These markers serve as mediators that the device can detect and use to calculate its precise location and orientation relative to the structure, thereby achieving high measurement precision without requiring complex direct sensing systems in the device.
Solution Approach 2:
The patent creates a digital model that is a precise copy of the physical structure, including the exact positions and orientations of physical markers. By comparing the detected marker positions with their known positions in the digital model, the system can accurately determine device location and align the digital model with the physical structure, achieving high alignment accuracy.
2Manufacturing precision
If high-precision location methods are implemented, then alignment accuracy of digital models with physical structures improves, but system complexity and cost increase
Solution Approach 1:
The patent employs preliminary action by pre-placing physical markers at known, precisely measured locations on the physical structure before the device arrives. The digital model is also pre-configured with the exact positions and orientations of these markers. When the device detects the markers, it can immediately calculate its location and align the digital model with the physical structure without requiring complex real-time measurement or adjustment mechanisms.
3Measurement precision
If markers are placed throughout the structure for accurate location determination, then location precision improves, but the structure modification complexity and installation difficulty increase
Solution Approach 1:
The patent divides the location determination system into multiple independent physical markers distributed throughout the structure. Each marker is a separate, self-contained unit that can be independently installed and detected. This segmentation allows the system to achieve high position determination accuracy through multiple distributed reference points while keeping each individual marker simple and easy to install.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables high-precision alignment of digital models with physical structures, reducing the risk of damage during remodeling and improving the accuracy of hidden structure identification, facilitating safer and more efficient maintenance and renovations.
Implementation Method 1
The use of physical markers such as optical tags and radio beacons, combined with object recognition techniques, to accurately determine the device's position within a structure
Data Source
AI summary
A digital model of a structure may be aligned with a device view of the structure using a location marker. In embodiments, the location marker may be an optical marker, a radio beacon, or one or more objects that can be recognized to a unique pattern. Device orientation information is used in conjunction with the location marker to align the digital model, so that the device can overlay one or more AR objects or other information on a view of the structure with relative precision. Other embodiments may be described and/or claimed.