AR World Mapping for Accurate Virtual Object Positioning
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Solution Overview
Problem
Existing augmented reality systems face challenges in providing a realistic experience by accurately correlating virtual objects with real-world objects, requiring extensive knowledge of user positioning while maintaining low costs and high performance.
Innovation Solution
The system employs multiple augmented reality display systems that capture data to construct a map of the real world, using sensors and processors to project virtual objects relative to real objects, with features like head-mounted and room-based sensors, and a passable world model to enhance user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AR system uses extensive knowledge of user positioning to accurately correlate virtual objects with real-world objects, then the realism of the augmented reality experience is improved, but the system complexity and energy consumption increase
Solution Approach 1:
The patent introduces a server as an intermediary component that centralizes the complex tasks of map construction and user positioning. The server receives captured data from multiple AR display systems, constructs detailed maps of the real world, and determines user positions based on these maps. This mediator approach allows individual AR devices to maintain simpler local processing while achieving high positioning accuracy through the centralized server's comprehensive map data and coordinate transformations.
2Measurement precision
If the AR system constructs detailed maps of the real world using multiple display systems, then the accuracy of virtual object positioning is improved, but the data processing requirements and energy consumption increase
Solution Approach 1:
The patent divides the AR system into multiple independent display systems, each capturing data from its local environment. Instead of requiring a single system to process all positioning data, the segmentation approach allows distributed data collection where each device contributes local captured data to the centralized server. This segmentation reduces the energy burden on individual devices while maintaining high positioning accuracy through the aggregation of multiple data sources.
Solution Approach 2:
The server performs preliminary action by constructing detailed maps of the real world in advance, before individual users need positioning services. The map construction process pre-processes captured data from multiple display systems, creating a ready-to-use reference framework. When users need positioning, the server can quickly determine their positions by comparing their captured data against the pre-constructed maps, significantly reducing real-time energy consumption compared to constructing maps on-demand.
3Productivity
If the system maintains real-time knowledge of user position and environment, then the augmented reality experience quality is improved, but the computational load and energy costs increase
Solution Approach 1:
The patent implements a feedback mechanism where the server continuously receives captured data from multiple AR display systems and updates the world maps accordingly. The server determines user positions based on these maps and provides positioning information back to the display systems. This feedback loop enables real-time AR experience quality without requiring each device to independently maintain complete environmental knowledge, distributing the computational load and reducing individual energy consumption while maintaining system-wide awareness.
Data Source
AI summary
An augmented reality display system comprises a passable world model data comprises a set of map points corresponding to one or more objects of the real world. The augmented reality system also comprises a processor to communicate with one or more individual augmented reality display systems to pass a portion of the passable world model data to the one or more individual augmented reality display systems, wherein the piece of the passable world model data is passed based at least in part on respective locations corresponding to the one or more individual augmented reality display systems.