Flexible AR Eyewear Geometry Modeling for Frame Bending
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Solution Overview
Problem
AR systems with flexible frames face challenges in maintaining accurate augmented reality rendering due to geometry distortions caused by frame bending, which affects the spatial relations among components and compromises the quality of the augmented scenes.
Innovation Solution
An AR system that dynamically models the geometry changes of flexible frames by estimating the current geometry on the fly, using a modeling module to adjust spatial relations and display geometry based on detected bending patterns, allowing accurate rendering despite frame deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible frames are used in AR eyewear devices, then comfort and adaptability are improved, but geometry stability deteriorates due to frame bending
Solution Approach 1:
The system dynamically adjusts the geometry model of the eyewear device based on real-time sensor data. Instead of using a static factory-calibrated geometry, the system continuously updates the spatial relationships among components to account for frame bending, allowing the geometry model to adapt to the actual deformed state of the flexible frame.
Solution Approach 2:
The system changes the geometry parameters (spatial relationships, positions, orientations) based on detected bending patterns. By monitoring sensor data and comparing it to the geometry model, the system identifies bending patterns and adjusts the geometry parameters accordingly to compensate for frame deformation.
2Measurement precision
If factory-calibrated geometry is used, then initial rendering accuracy is improved, but rendering accuracy deteriorates when frame bending occurs
Solution Approach 1:
The system uses sensor data as feedback to continuously monitor the actual geometry of the eyewear device. By comparing sensor measurements with the geometry model, the system detects deviations caused by frame bending and adjusts the geometry model accordingly, ensuring rendering accuracy is maintained despite frame deformation.
Solution Approach 2:
The system performs preliminary geometry calibration at the factory to establish an initial accurate geometry model. This factory-calibrated geometry serves as the baseline, and the system later adjusts this baseline based on detected bending patterns to maintain rendering accuracy throughout the device's usage.
3Stability of the object's composition
If rigid frames are used, then geometry stability is improved, but comfort and user adaptation deteriorate
Solution Approach 1:
The system enables the eyewear device to have a flexible frame that can adapt to different users and comfort requirements, while simultaneously implementing dynamic geometry modeling to maintain the rendering accuracy that would otherwise be lost due to frame flexibility.
Data Source
AI summary
An eyewear device with flexible frame for Augmented Reality (AR) is disclosed. At least two sensors and a display are mounted on the flexible frame. When in use, the real time geometry of the eyewear device may change from factory calibrated geometry, resulting in low quality AR rendering. A modeling module is provided to model the real time geometry of the eyewear device on the fly using sensor information of the at least two sensors. The modeled real time geometry is then provided to a rendering module to accurately display the AR to the user.