Visual Anchor Coordinate Recovery for Markerless AR Placement
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Solution Overview
Problem
Current augmented reality systems face challenges in accurately placing multiple three-dimensional objects within large real-world sites using only identifiable natural and manmade features, maintaining user-user and object-user relations, and scaling without the need for extraneous markers.
Innovation Solution
A visual positioning system that uses an inside-out approach, employing a 3D model of a site, where users' cameras are spawned within a virtual site aligned with their physical location, utilizing GPS data and feature points, and anchors are used to recover absolute location and orientation without discrete markers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional augmented reality systems use identifiable natural and manmade features for positioning, then the system can operate without extraneous markers, but the accuracy of placing multiple three-dimensional objects within large real-world sites deteriorates
Solution Approach 1:
The patent introduces visual anchors as intermediary elements that mediate between the physical world and digital content. These anchors serve as reference points that can be detected by cameras and used to establish accurate spatial relationships, enabling precise placement of 3D objects without requiring complex marker systems throughout the entire environment.
Solution Approach 2:
The system segments the large real-world site into smaller regions defined by visual anchors. Instead of attempting to position objects across the entire large space simultaneously, the system uses multiple anchors distributed throughout the area to create a framework of reference frames that can be accurately registered and transformed into a unified coordinate system.
2Reliability
If the system uses more anchors to improve positioning accuracy, then the accuracy of maintaining user-user and object-user relations improves, but the quantity of anchors required increases complexity
Solution Approach 1:
The visual anchors serve multiple functions simultaneously: they act as positioning references, orientation markers, and spatial relationship anchors. A single anchor point can support multiple 3D objects and maintain relationships with multiple users, eliminating the need for separate reference elements for each function.
Solution Approach 2:
The system merges the functions of localization, orientation, and spatial relationship maintenance into a unified anchor-based framework. By combining these functions into a single reference system, the patent reduces the total number of separate elements needed while maintaining all necessary spatial relationships.
3Adaptability or versatility
If the system places digital content at every possible location, then the versatility of the augmented reality experience improves, but the difficulty of managing and scaling the system deteriorates
Solution Approach 1:
The patent transitions from a two-dimensional approach of placing content at specific locations to a three-dimensional spatial framework defined by anchors. This dimensional change allows content to be placed anywhere within the spatial volume defined by the anchor network, greatly increasing placement flexibility while the anchor framework manages the complexity of scaling.
Data Source
AI summary
The present disclosure relates to augmented reality, virtual reality, mixed reality, and extended reality systems, and more specifically, to systems and methods for a visual positioning system.