AR 3D Display Pixel Mapping Using a Virtual Barrier
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Solution Overview
Problem
Existing augmented reality (AR) display technologies face latency issues due to the need for additional calculations in converting actual to virtual viewpoints for three-dimensional (3D) image rendering, which complicates the process and slows down the system.
Innovation Solution
A method for 3D image display using augmented reality that involves collecting actual eye position data, calculating a virtual barrier based on this data and an AR display specification, assigning pixels to correspond to the actual viewpoint, and rendering stereo content directly, eliminating the need for continuous virtual image localization calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If virtual image localization is performed by converting actual viewpoint to virtual viewpoint in every frame, then 3D image display accuracy is improved, but calculation time increases resulting in latency
Solution Approach 1:
The patent pre-calculates and stores the mapping relationship between actual viewpoints and virtual viewpoints in a lookup table during system initialization. During real-time operation, the system directly queries this pre-computed table instead of performing viewpoint conversion calculations in every frame, thereby eliminating calculation latency while maintaining accurate virtual image localization.
Solution Approach 2:
The patent creates a virtual barrier model that replicates the optical properties of the physical barrier in virtual space. This virtual barrier is used to determine pixel assignment without requiring repeated viewpoint transformations, allowing the system to copy the barrier's geometric parameters and use them directly for rendering decisions.
2Measurement precision
If viewpoint conversion calculation is performed in every frame, then 3D rendering accuracy is improved, but device complexity increases
Solution Approach 1:
The patent pre-computes the virtual barrier parameters and stores them in a data structure during system initialization. This eliminates the need for complex viewpoint conversion calculations during real-time rendering, as the system can directly use the pre-computed virtual barrier geometry to determine pixel assignments and rendering parameters.
Solution Approach 2:
The patent introduces a virtual barrier as an intermediary computational model that simplifies the relationship between the physical barrier and the rendering process. Instead of directly converting viewpoints, the system uses the virtual barrier's geometric parameters as an intermediate representation to determine pixel assignment, reducing computational complexity.
3Measurement precision
If virtual barrier parameters are calculated in every frame, then pixel assignment accuracy is improved, but processing speed decreases
Solution Approach 1:
The patent calculates virtual barrier parameters such as gap and pitch only once during system initialization based on the physical barrier's geometry. These pre-computed parameters are then reused for all subsequent pixel assignment operations, maintaining accuracy while dramatically improving rendering speed by eliminating repeated calculations.
Solution Approach 2:
The patent changes the computational approach from dynamically calculating barrier parameters in every frame to using pre-determined parameters stored in memory. The system maintains accuracy by using the pre-computed virtual barrier gap and pitch values, while productivity improves because these parameter lookups are much faster than repeated geometric calculations.
Data Source
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AI summary
Provided are a three-dimensional image display method using augmented reality and a device therefor. A three-dimensional image display method includes an eye position data collection step for collecting actual eye position data about a user, a virtual display panel preparation step for preparing a virtual display panel having augmented reality display specifications, a virtual barrier calculation step for calculating a virtual barrier on the basis of the actual eye position data and the virtual display panel, a virtual display panel pixel assignment step for assigning pixels of the virtual display panel to correspond to the actual viewpoint of the user on the basis of the actual eye position data and the virtual barrier, a rendering step for rendering stereo content corresponding to the actual viewpoint of the user, and a display step for displaying a three-dimensional image on the basis of the assigned pixels and the stereo content.