An Indoor Location-Based Augmented Reality Framework

Abstract

This paper proposes an indoor location-based augmented reality framework (ILARF) for the development of indoor augmented-reality (AR) systems. ILARF integrates an indoor localization unit (ILU), a secure context-aware message exchange unit (SCAMEU), and an AR visualization and interaction unit (ARVIU). The ILU runs on a mobile device such as a smartphone and utilizes visible markers (e.g., images and text), invisible markers (e.g., Wi-Fi, Bluetooth Low Energy, and NFC signals), and device sensors (e.g., accelerometers, gyroscopes, and magnetometers) to determine the device location and direction. The SCAMEU utilizes a message queuing telemetry transport (MQTT) server to exchange ambient sensor data (e.g., temperature, light, and humidity readings) and user data (e.g., user location and user speed) for context-awareness. The unit also employs a web server to manage user profiles and settings. The ARVIU uses AR creation tools to handle user interaction and display context-aware information in appropriate areas of the device’s screen. One prototype AR app for use in gyms, Gym Augmented Reality (GAR), was developed based on ILARF. Users can register their profiles and configure settings when using GAR to visit a gym. Then, GAR can help users locate appropriate gym equipment based on their workout programs or favorite exercise specified in their profiles. GAR provides instructions on how to properly use the gym equipment and also makes it possible for gym users to socialize with each other, which may motivate them to go to the gym regularly. GAR is compared with other related AR systems. The comparison shows that GAR is superior to others by virtue of its use of ILARF; specifically, it provides more information, such as user location and direction, and has more desirable properties, such as secure communication and a 3D graphical user interface.

Indoor Positioning System Based on UWB Rapid Integration with Unity Cross Platform Development Engine through IoT

“…MQTT can facilitate indoor navigation by enabling devices to share information such as sensor data, user information, and location estimates [29][30][31][32]. Jiang et al [33] adopt three major frameworks in their indoor location-based augmented reality framework (ILARF), which implements AR visualization, indoor localization unit (ILU), and context-aware message exchange through the utilization of MQTT protocol containing servers for clients to subscribe and publish IMU data. The localization system is intended for an indoor gym application known as Gym Augmented Reality (GAR), where users can interact virtually and at the same time know each other's whereabouts within the application.…”

GPS-Induced Disparity Correction for Accurate Object Placement in Augmented Reality

“…Methods utilizing markers for AR placement have been explored; however, they entail the inconvenience of physically installing markers, which are impractical for outdoor environments [22]. Additionally, indoor-based approaches lack adequate outdoor application [23]. Although outdoor AR solutions employing GPS have been proposed, the inaccuracies associated with GPS can significantly hinder the precise localization and recognition of objects [24].…”

Neuropsychology, Augmented Reality and Virtual Reality in the context of ERPI - Innovative approaches to the well-being of the elderly

“…Fick et al, 2021) It is therefore observed that AR technologies can improve users' spatial awareness by producing contextually relevant information and visualizations that facilitate spatial orientation and updating. Overlaying digital markers or clues on real-world imagery improves users' situational awareness and supports effective navigation strategies such as landmark-based navigation and route planning(Jiang & Subakti, 2023;Khan et al, 2022).Challenges and Research in Health Sciences: A Multidisciplinary Approach Neuropsychology, Augmented Reality and Virtual Reality in the context of ERPI -Innovative approaches to the well-being of the elderly In summary, the different studies related to the cognitive functions used in AR therapy sessions provide valuable information about the potential of AR technology as a tool for cognitive improvement. Based on the perspectives of the referenced authors, there are several key points that highlight the various benefits of using AR for cognitive function: Increased engagement and immersion AR interventions provide immersive and interactive experiences that engage users in cognitive tasks and activities, fostering active participation and engagement in spatial, memory, executive function, and attention processes.…”