AR Posture Guidance for Accurate 3D Body Scanning
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Solution Overview
Problem
Current 3D scanning processes in smart devices, such as smartphones, often require user guidance to accurately capture images of body parts or objects, but lack efficient methods for providing real-time, intuitive instructions, leading to difficulties in achieving precise poses and camera orientations.
Innovation Solution
The implementation of augmented-reality (AR) and human-posture-detection techniques within smartphone apps to generate real-time on-screen and voice guidance, using sensors' data to analyze user posture and provide interactive feedback, ensuring accurate positioning and orientation of the camera for effective 3D scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional 3D scanning processes are used without AR guidance, then the device complexity is reduced, but the ease of operation deteriorates as users struggle to achieve precise poses and camera orientations
Solution Approach 1:
The patent introduces an AR guidance system as an intermediary between the user and the 3D scanning process. Virtual visual indicators are overlaid on the camera view to guide users on positioning and orientation, making the complex scanning requirements intuitive and easy to follow without adding physical complexity to the device itself
Solution Approach 2:
The system provides real-time visual feedback through AR indicators that show users whether they are correctly positioned and oriented for scanning. The virtual indicators dynamically adjust to provide continuous guidance, allowing users to self-correct their pose and camera angle without external assistance
2Ease of operation
If AR guidance components are added to guide users, then the ease of operation improves, but the device complexity increases due to additional sensors and processing requirements
Solution Approach 1:
The patent leverages existing multi-functional smart device components (camera, sensors, display) to deliver AR guidance. The same camera captures both the scene and generates the AR overlay, while existing sensors serve dual purposes for both scanning and guidance, avoiding the need for dedicated additional hardware
Solution Approach 2:
The system uses the device's own sensors and processing capabilities to generate and display AR guidance independently. The smart device autonomously analyzes its own sensor data to create real-time visual feedback without requiring external guidance systems or additional specialized components
3Measurement precision
If real-time posture detection is implemented, then the measurement precision of user positioning improves, but the use of energy increases due to continuous sensor processing
Solution Approach 1:
The system implements periodic posture detection and AR frame generation at optimized intervals rather than continuous processing. This timing-based approach maintains measurement precision for guiding users while reducing computational load and energy consumption by processing only when necessary for guidance updates
Data Source
AI summary
A user-guidance system that utilizes augmented-reality (AR) components and human-posture-detection techniques is presented. The user-guidance system can help users to use smart devices to conduct 3D body scans more efficiently and accurately. AR components are computer generated for the on-screen guidance to guide a camera operator to position the camera in a particular location in relation to a target object with a particular tilt orientation in relation to the target object to capture an image that includes a region of the target object for 3D reconstruction of the target object. Human-posture-detection techniques are used to detect a human user's real-time posture and provide real-time on-screen guidance feedback and instructions to the human user to adopt an intended best posture for 3D reconstruction of the human user.