Mobile AR Object Scaling Through Coordinate System Matching
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Solution Overview
Problem
Existing 3D scanning methods struggle to accurately determine the actual size of an object model, requiring additional equipment or markers for size confirmation, which complicates the implementation of realistic augmented reality.
Innovation Solution
A method and apparatus using a mobile device camera to capture and scale a 3D object model, integrating SLAM for location estimation, and matching augmented reality and model coordinate systems to display the model at actual size without a 3D scanner or markers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a 3D scanner or separate marker is used to determine object size, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the size measurement function from specialized 3D scanning equipment and integrates it into the mobile device's camera system. By using the camera to capture images and automatically calculating object dimensions through image processing algorithms, the system removes the need for separate measurement tools while maintaining measurement capability.
Solution Approach 2:
The mobile device camera is made multi-functional by enabling it to perform both photography and size measurement tasks. The system processes regular camera images to extract dimensional information, allowing a single device to serve multiple purposes without requiring specialized scanning equipment.
2Measurement precision
If a separate marker is photographed to confirm object size, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the requirement for separate markers or grids from the scanning process. Instead of needing to photograph additional reference objects, the system directly processes images of the target object itself to calculate its dimensions, simplifying the user workflow.
Solution Approach 2:
The system enables the object itself to serve as the reference for size measurement. By analyzing the captured images and using the known camera parameters, the system self-calibrates and calculates object dimensions without requiring external reference markers or manual intervention.
3Manufacturing precision
If manual scanning with position adjustment is performed, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent replaces the mechanical manual scanning process with an automated computational system. Instead of physically moving the scanner and manually adjusting positions, the system uses image processing algorithms and coordinate transformations to automatically generate accurate 3D models from captured images, significantly reducing time while maintaining precision.
Solution Approach 2:
The system changes the approach from physical position adjustment to computational parameter transformation. By using coordinate system transformations and mathematical calculations to map 2D image coordinates to 3D space, the system achieves accurate reconstruction without manual mechanical manipulation, improving both speed and consistency.
Data Source
AI summary
Disclosed are a method and device for realizing augmented reality via mobile scan object model scaling. According to one embodiment of the present invention, an augmented reality realization method performed in an augmented reality realization device via mobile scan object modeling may comprise the steps of: capturing a background image by means of an image-capturing unit; displaying the background image in real time via a display unit, and creating, by means of an AR drive unit, an AR space corresponding to the background image according to an augmented reality start command from a user; loading an object model selected by the user onto the AR space; matching a model coordinate system of the object model with an AR coordinate system of the AR space; scaling the object model according to a result of the matching; and overlaying the scaled object model onto the AR space, and displaying same.