Marker-Based AR Overlay on Portable Terminals
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Solution Overview
Problem
The high capital investment required for introducing Mixed Reality (MR) and Augmented Reality (AR) techniques into working sites, such as the need for specialized devices like head-mounted displays, hinders widespread adoption and efficient content display for inspection and verification tasks.
Innovation Solution
A content display system comprising a portable terminal device and a content management device, connected via wireless or wired networks, uses a marker-based system to overlay virtual content onto real objects, allowing for efficient content generation, display, and determination processing, reducing the need for specialized hardware and enabling cost-effective implementation of MR and AR technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If head-mounted displays are used to implement MR and AR techniques at working sites, then the capability to overlay virtual content on real objects is improved, but the capital investment cost increases significantly
Solution Approach 1:
The patent uses a camera to capture images of real objects and overlays virtual content onto these captured images, creating a visual copy of the real world on a display screen. This approach replicates the MR/AR experience without requiring head-mounted displays, thereby reducing hardware complexity and cost while maintaining the core functionality of overlaying virtual information on real objects
Solution Approach 2:
The system uses a general-purpose portable terminal device (smartphone or tablet) that can perform multiple functions including camera operation, display, and content processing. This universal device replaces specialized head-mounted displays, enabling MR/AR functionality through existing multi-functional equipment rather than dedicated single-purpose hardware
2Measurement precision
If marker-based content display is used to reduce deviation from real objects, then measurement precision is improved, but the system requires additional processing steps
Solution Approach 1:
The patent introduces markers as intermediary elements attached to real objects. These markers serve as reference points that facilitate precise positioning and alignment of virtual content on the display. The markers act as mediators between the real object and the virtual overlay, enabling accurate spatial relationship establishment without complex processing algorithms
Data Source
AI summary
According to one embodiment, provided are a parameter calculating unit 101 that calculates an initial position and an initial posture of a device as initial parameters based on a captured image of a real object with a position of the real object as an origin, a parameter updating unit 102 that calculates displacement of a position and a posture of the device and updates the position and the posture of the device starting from the initial position and the initial posture, a display processing unit 104 that overlays and displays the content on the real object, the content being disposed in a virtual space with the position of the real object as an origin, and a determination processing unit 105 that changes, when a virtual object included in the displayed content is selected and operated, a determination state of the virtual object.