18172874. JOINT BENDING ESTIMATION simplified abstract (Snap Inc.)

JOINT BENDING ESTIMATION

Organization Name

Snap Inc.

Inventor(s)

Matthias Kalkgruber of Vienna (AT)

Tiago Miguel Pereira Torres of Vienna (AT)

Chao Chen of Marina Del Rey CA (US)

Jason Heger of Louisville CO (US)

John Recchio of Los Angeles CA (US)

Mark Kraz of Los Gatos CA (US)

Michael Ryner of Santa Monica CA (US)

JOINT BENDING ESTIMATION - A simplified explanation of the abstract

This abstract first appeared for US patent application 18172874 titled 'JOINT BENDING ESTIMATION

Simplified Explanation: The patent application describes a system that corrects for frame bending in an augmented reality system using strain gauges and visual inertial odometry.

• Strain gauges and visual inertial odometry are combined to determine strains in the frame.
• An initial model based on strain gauge measurements and actual frame spatial relationships is established using finite element analysis or calibration.
• The system calculates bending or strains of the frame during an initial visual inertial odometry data calculation phase.
• Subsequent visual inertial odometry data calculations generate a corrected frame model for calculating corrected tracking data and virtual overlays in the AR experience.

Key Features and Innovation:

• Combination of strain gauges and visual inertial odometry for frame bending correction.
• Initial model based on strain gauge measurements and actual frame spatial relationships.
• Calculation of bending or strains of the frame using strain data from strain gauges.
• Generation of corrected frame model for calculating corrected tracking data and virtual overlays.

Potential Applications: This technology can be used in various augmented reality systems, such as AR glasses, headsets, and displays, to improve accuracy and stability.

Problems Solved: This technology addresses the issue of frame bending in augmented reality systems, which can lead to inaccuracies in tracking data and virtual overlays.

Benefits:

• Improved accuracy and stability in augmented reality experiences.
• Enhanced user experience with more precise tracking data and virtual overlays.

Commercial Applications: Augmented reality hardware manufacturers and developers can utilize this technology to enhance the performance of their AR products, leading to better user satisfaction and market competitiveness.

Questions about Frame Bending Correction: 1. How does the system determine strains in the frame using strain gauges and visual inertial odometry? 2. What are the potential implications of using a corrected frame model in augmented reality experiences?

Original Abstract Submitted

A system for correcting for frame bending of an augmented reality system is provided. A combination of strain gauges and visual inertial odometry is used to determine strains in the frame. An initial model between strain gauge measurements and actual frame spatial relationships is based on finite element analysis or calibration. During an initial visual inertial odometry data calculation phase, the augmented reality system calculates bending or strains of the frame using strain data from the strain gauges mounted to the frame. Subsequent visual inertial odometry data calculations are used to generate a corrected frame model of the frame. The corrected frame model is used for calculating corrected tracking data and corrected virtual overlays that are used to generate virtual overlays used in an AR experience provided by the augmented reality system.