Computer vision guidance system for indoor navigation of visually impaired people

Chaccour, Kabalan; Badr, Georges

doi:10.1109/is.2016.7737460

Cited by 40 publications

(18 citation statements)

References 16 publications

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“…In single-camera systems [36][37][38][39], cameras without depth sensors are used. Building on ideas from non-vision-based systems, the use of fiducial markers (Aruco, QR codes) is suggested [37,38] as an alternative to computationally intensive video analysis.…”

Section: Camera-based Systemsmentioning

confidence: 99%

Indoor Navigation Systems for Visually Impaired Persons: Mapping the Features of Existing Technologies to User Needs

Plikynas

Žvironas

Budrionis

et al. 2020

Sensors

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Currently, several outdoor navigation and orientation electronic traveling aid (ETA) solutions for visually impaired (VI) people are commercially available or in active development. This paper’s survey of blind experts has shown that after outdoor navigation, the second most important ETA feature for VI persons is indoor navigation and orientation (in public institutions, supermarkets, office buildings, homes, etc.). VI persons need ETA for orientation and navigation in unfamiliar indoor environments with embedded features for the detection and recognition of obstacles (not only on the ground but also at head level) and desired destinations such as rooms, staircases, and elevators. The development of such indoor navigation systems, which do not have Global Positioning System (GPS) locational references, is challenging and requires an overview and evaluation of existing systems with different navigation technologies. This paper presents an evaluation and comparison of state-of-the-art indoor navigation solutions, and the research implications provide a summary of the critical observations, some insights, and directions for further developments. The paper maps VI needs in relation to research and development (R&D) trends using the evaluation criteria deemed most important by blind experts.

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Section: Camera-based Systemsmentioning

confidence: 99%

Indoor Navigation Systems for Visually Impaired Persons: Mapping the Features of Existing Technologies to User Needs

Plikynas

Žvironas

Budrionis

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…Navigation services for people with visual impairments have also been studied [18,19]. In [18], adaptive artificial potential field (AAPF) path planning was proposed to enable more efficient and safer path planning.…”

Section: Marker-based Indoor Localizationmentioning

confidence: 99%

“…However, in addition to the inconvenience of wearing a haptic device, there were limitations in that the system required a digital map. In [19], IP cameras were installed on the ceilings of major places, and remote systems were built. The installed IP cameras recognized the marker attached to a user's head, estimated the location, and guided the user.…”

Section: Marker-based Indoor Localizationmentioning

confidence: 99%

A Hybrid Marker-Based Indoor Positioning System for Pedestrian Tracking in Subway Stations

Lee

Kim

2020

Applied Sciences

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The use of smartphones for accurate navigation in underground spaces, such as subway stations, poses several challenges. This is because it is difficult to obtain a sure estimate of user location due to the radio signal interference caused by the entry and exit of trains, the infrastructure of the subway station installation, and changes in the internal facility environment. This study uses quick response markers and augmented reality to solve these difficulties using an error correction method. Specifically, a hybrid marker-based indoor positioning system (HMIPS) which provides accurate and efficient user-tracking results is proposed. The HMIPS performs hybrid localization by using marker images as well as inertial measurement unit data from smartphones. It utilizes the Viterbi tracking algorithm to solve the problem of tracking accuracy degradation that may occur when inertial sensors are used by adopting a sensor error correction technique. In addition, as an integrated system, the HMIPS provides a tool to easily carry out all the steps necessary for positioning. The results of experiments conducted in a subway station environment confirm that the HMIPS provides accurate and practical navigation services. The proposed system is expected to be useful for indoor navigation, even in poor indoor positioning environments.

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“…The cameras capture the image and send it to the application installed on the smartphone used by the concerned person. The application using the image processing finds out the objects present in it and then informs the relevant person by producing an audio message [31].…”

Section: Important Developments In Intelligent Assistive Systemsmentioning

confidence: 99%

Assistive Technology Evolving as Intelligent System

Basu

Petropoulakis

Caterina

et al. 2020

New Trends in Computational Vision and Bio-Inspired Computing

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Different evolving technologies surround humans today. Among the various technologies, Assistive Technology has still not established itself firmly because there is an absence of proper integration of this technology with human life. However, in the future, it will become one of the most important and vital phenomena in everyone's life. Because humans want to make their life easier and longer and these are the reasons for the rapid growth in demand for Assistive Technology. Therefore, improvements in the technology and the way it is applied are essential and, for this reason, there is a requirement of a detailed study of the technology. This paper demonstrates the different milestones achieved in assistive technology by using different techniques to attempt to improve intelligence in assistive systems; and also, it describes the gaps that are still present even after such extensive works and, which are required to be either resolved or bridged. This study is done to understand where the assistive technology is today and in which direction it needs to get directed.

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Computer vision guidance system for indoor navigation of visually impaired people

Cited by 40 publications

References 16 publications

Indoor Navigation Systems for Visually Impaired Persons: Mapping the Features of Existing Technologies to User Needs

Indoor Navigation Systems for Visually Impaired Persons: Mapping the Features of Existing Technologies to User Needs

A Hybrid Marker-Based Indoor Positioning System for Pedestrian Tracking in Subway Stations

Assistive Technology Evolving as Intelligent System

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