AR Sensor Installation Simulation via Fiducial Mark Superposition
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Solution Overview
Problem
Conventional augmented reality systems fail to accurately simulate the installation of sensors on walls and do not effectively convey the relevance between the installation position and sensing coverage, making it difficult for users to properly install motion sensors like IR, mmWave, or LiDAR devices in smart home networks.
Innovation Solution
An augmented-reality system that includes an image capture device, image processing unit, user interface, and rendering device, which captures images, determines space configuration, receives fiducial point input, and superimposes computer-generated images of sensors at correct install heights and sensing coverage areas, allowing users to visualize the installation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional AR system is used to simulate sensor installation, then user interface is provided, but accurate simulation of sensor mounting on wall is not achieved
Solution Approach 1:
The patent uses a two-dimensional fiducial mark as a simplified copy representation of the three-dimensional sensor, and employs image processing to generate a virtual sensor image that copies the appearance and dimensions of the actual sensor. This allows accurate visual simulation without requiring complex 3D mounting mechanics.
Solution Approach 2:
The patent transforms the three-dimensional sensor mounting problem into a two-dimensional image processing problem by projecting the sensor's position and dimensions onto a captured image plane. The virtual sensor image is superimposed on the 2D image at calculated positions based on fiducial mark coordinates, effectively solving 3D spatial positioning through 2D image coordinates.
2Loss of information
If conventional AR system is used, then basic AR functionality is provided, but relevance between install position and sensing coverage cannot be perceived
Solution Approach 1:
The patent combines multiple information elements into a single integrated AR display: the fiducial mark indicates installation position, the virtual sensor image shows the sensor's appearance and dimensions, and the sensing coverage area is overlaid on the same image. This merging of position, object, and coverage information into one visual interface eliminates information loss without requiring separate display devices or complex interaction mechanisms.
3Manufacturing precision
If repeated efforts are used to obtain proper installation location, then accurate installation is achieved, but time-consuming process occurs
Solution Approach 1:
The patent performs preliminary actions by capturing an image of the installation location, processing the image to detect the fiducial mark position, and calculating the virtual sensor image parameters before the actual installation. This preliminary virtual positioning and verification eliminates the need for repeated physical adjustments and measurements during the actual installation process.
Solution Approach 2:
The system provides visual feedback by superimposing the virtual sensor image and sensing coverage area on the captured image, allowing the installer to verify the correctness of the installation position and orientation before making the actual installation. This immediate visual feedback loop eliminates trial-and-error adjustments and reduces installation time while maintaining precision.
Data Source
AI summary
An augmented-reality system includes an image capture device that obtains a captured image, an image processing unit that receives and processes the captured image to determine space configuration of a scene; a user interface that receives a position of a fiducial point inputted by a user; and a rendering device that superimposes a fiducial mark at the position of the fiducial point on the captured image. The rendering device superimposes a first computer-generated image representing a sensor at an install height above the fiducial point and on a wall of the captured image.