A concept study for a radar-based navigation device with sector scan antenna for visually impaired people

Kwiatkowski, Patrick; Jaeschke, Timo; Starke, David; Piotrowsky, Lukas; Deis, H.; Pohl, Nils

doi:10.1109/imbioc.2017.7965796

Cited by 15 publications

(11 citation statements)

References 4 publications

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“…A video of the tests can also be watched online [34]. In [19], the challenge of avoiding collision with obstacles for visually impaired users was achieved by creating a radar-based navigation device. The system employs a frequency-modulated continuous-wave signal.…”

Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

“…This sensor scanned the surrounding environment and detected the position of obstacles up to 5 m. The intention of the authors is to scan the scenario using a beam-steering antenna. Its design is shown in [19], but since it is still under development, the rotation was mechanically achieved by a stepper motor. Due to the size of the setup, the radar was placed on a large mounting.…”

Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

“…The working frequency of the system was 24 GHz, selected to facilitate a lightweight wearable device, because at this frequency the signal can penetrate textiles, making it possible to wear the device under clothing. The system automatically compensates small tilt errors or notifies the person In [19], the challenge of avoiding collision with obstacles for visually impaired users was achieved by creating a radar-based navigation device. The system employs a frequency-modulated continuous-wave signal.…”

Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

“…Most aids are radar-based systems, where the frequency-modulated continuous wave (FMCW) is the typical mode of operation [19][20][21][22][23][24][25]. In a FMCW radar, the information about the target is contained in the frequency of the received signal.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Insight on Electronic Travel Aids for Visually Impaired People: A Review on the Electromagnetic Technology

Cardillo

Caddemi

2019

Electronics

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This review deals with a comprehensive description of the available electromagnetic travel aids for visually impaired and blind people. This challenging task is considered as an outstanding research area due to the rapid growth in the number of people with visual impairments. For decades, different technologies have been employed for solving the crucial challenge of improving the mobility of visually impaired people, but a suitable solution has not yet been developed. Focusing this contribution on the electromagnetic technology, the state-of-the-art of available solutions is demonstrated. Electronic travel aids based on electromagnetic technology have been identified as an emerging technology due to their high level of achievable performance in terms of accuracy, flexibility, lightness, and cost-effectiveness.

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Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

Section: Electromagnetic Aids For Visually Impaired and Blind Peoplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insight on Electronic Travel Aids for Visually Impaired People: A Review on the Electromagnetic Technology

Cardillo

Caddemi

2019

Electronics

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“…In the literature, a number of systems [ 43 , 44 , 45 , 46 ] rely on sensor fusion to understand more of the surrounding scenes. Along this line, proof-of-concepts were also investigated in [ 47 , 48 , 49 , 50 ] to use highly integrated radars to warn against collisions with pedestrians and cars, taking into consideration that fast-moving objects are response-time critical. Arguably, for navigation assistance, an even greater concern lies in the depth data from almost all commercial 3D sensors, which suffer from a limited depth range and could not maintain the robustness across various environments [ 22 , 26 , 29 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Unifying Terrain Awareness for the Visually Impaired through Real-Time Semantic Segmentation

Yang

Wang

Bergasa

et al. 2018

Sensors

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Navigational assistance aims to help visually-impaired people to ambulate the environment safely and independently. This topic becomes challenging as it requires detecting a wide variety of scenes to provide higher level assistive awareness. Vision-based technologies with monocular detectors or depth sensors have sprung up within several years of research. These separate approaches have achieved remarkable results with relatively low processing time and have improved the mobility of impaired people to a large extent. However, running all detectors jointly increases the latency and burdens the computational resources. In this paper, we put forward seizing pixel-wise semantic segmentation to cover navigation-related perception needs in a unified way. This is critical not only for the terrain awareness regarding traversable areas, sidewalks, stairs and water hazards, but also for the avoidance of short-range obstacles, fast-approaching pedestrians and vehicles. The core of our unification proposal is a deep architecture, aimed at attaining efficient semantic understanding. We have integrated the approach in a wearable navigation system by incorporating robust depth segmentation. A comprehensive set of experiments prove the qualified accuracy over state-of-the-art methods while maintaining real-time speed. We also present a closed-loop field test involving real visually-impaired users, demonstrating the effectivity and versatility of the assistive framework.

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An Aid System for Autonomous Mobility of Visually Impaired People on the Historical City Walls in Lucca, Italy

Donati

Iacopetti

Celli

et al. 2019

Technological Trends in Improved Mobility of the Visually Impaired

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The research project "The Walls for All" (in Italian "Le Mura per Tutti") aims at the realization of an aid system for visually impaired people, promoting autonomous mobility in a free time/cultural outdoor scenario. The selected installation site is a 4 km pedestrian and bike wide lane on top of the historical walls of Lucca city, Tuscany, Italy. The proposed system guides the user on predefined tracks (virtual path), realized by means of buried cables, that can be detected with the help of the Smart Cane, a traditional white cane equipped with custom electronics; and a mobile device featuring an ad-hoc developed Android application that provides geo-referenced guidance and context information. The system has been conceived, designed and successfully tested by visually impaired people of the Italian Association for the Blind and Visually Impaired -Section of Lucca.

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A concept study for a radar-based navigation device with sector scan antenna for visually impaired people

Cited by 15 publications

References 4 publications

Insight on Electronic Travel Aids for Visually Impaired People: A Review on the Electromagnetic Technology

Insight on Electronic Travel Aids for Visually Impaired People: A Review on the Electromagnetic Technology

Unifying Terrain Awareness for the Visually Impaired through Real-Time Semantic Segmentation

An Aid System for Autonomous Mobility of Visually Impaired People on the Historical City Walls in Lucca, Italy

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