Hybrid GPS AR Marker Positioning for Mobility Devices
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Solution Overview
Problem
Current GPS technologies face challenges in accurately determining a device's position indoors, underground, or in areas with tall buildings, and Visual Positioning Services have limitations due to speed and network issues, making them unsuitable for mobility devices.
Innovation Solution
A mobility device that combines GPS technology with augmented reality (AR) environment technology to provide more accurate positioning by using AR markers to correct GPS position information, especially at low speeds or when stationary, and periodically updating position information for enhanced accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GPS technology is used to determine position, then positioning can be provided in open areas, but positioning accuracy deteriorates indoors, underground, or in regions with tall buildings
Solution Approach 1:
The patent combines GPS technology with AR marker recognition technology to create a hybrid positioning system. The controller integrates position information from both GPS coordinates and AR marker positions to determine the mobility device's location, allowing the system to maintain positioning availability in open areas while achieving accurate positioning in environments where GPS signals are weak or unavailable.
2Measurement precision
If Visual Positioning Service (VPS) based on video is used, then positioning can be provided in GPS-denied environments, but the system becomes unsuitable for mobility devices due to speed and network problems
Solution Approach 1:
The patent extracts and applies only the essential AR marker recognition function from VPS technology, separating it from the complex video processing and network-dependent components. This simplified approach uses camera-based AR marker detection without requiring extensive video analysis or network connectivity, making the system suitable for mobility devices with speed and network constraints.
3Measurement precision
If AR marker-based positioning is used alone, then high positioning accuracy can be achieved, but the system becomes complex and requires additional components
Solution Approach 1:
The patent makes the AR camera serve multiple functions: it is used both for AR marker recognition and for capturing regular camera images. This multi-functionality eliminates the need for separate sensors or components dedicated solely to AR marker detection, thereby achieving high positioning accuracy without significantly increasing device complexity.
Data Source
AI summary
An embodiment mobility device includes a position detector configured to detect a first current position of the mobility device, a display configured to display position information of the mobility device, and a controller configured to set the first current position of the mobility device detected by the position detector as first position information, identify an augmented reality (AR) marker in a predetermined range, based on the first position information, determine a second current position of the mobility device based on the identified AR marker, and set the second current position of the mobility device determined based on the identified AR marker as second position information, and determine final position information of the mobility device by applying the second position information to the first position information.