A tactile system for informing the blind on direction of a walk

Bujnowski, Adam; Drozd, M.; Kowalik, Ryszard; Wtorek, Jerzy

doi:10.1109/hsi.2008.4581562

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…Secondly, progress in electronics is making it possible to realize wearable lightweight and low power systems, well suited for vibrotactile systems. Many devices have been proposed for outdoor navigation based on tactile interfaces: most of them are belts (Tsukada, 2004), others are instead wrist based interfaces (Bujnowski, 2008). Only a few systems address the problem of indoor navigation (Ross, 2004), (Ghiani, 2008) mainly by means of vocal messages and expensive architectures.…”

Section: Related Workmentioning

confidence: 99%

“…Hence, other metrics to compare different kind of actuators or even to assess quantitatively the performance given by such systems are still needed. A small step in this direction was taken in (Bujnowski, 2008); the authors show the activation of the sensorimotor area of the brain during vibrotactile stimulation. They demonstrated that the tactile stimulation was actually influencing the user perception, even if it was not possible to quantify or characterize such influence.…”

Section: Related Workmentioning

confidence: 99%

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A Cost-Effective Indoor Vibrotactile Navigation System for the Blind

Altini

Farella

Pirini

et al. 2011

Proceedings of the International Conference on Health Informatics

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This paper describes the development of an indoor vibrotactile navigation system for the visually impaired people. We aimed at realizing a wearable, low-cost, and effective system able to help blind users in unknown indoor environments that they might visit occasionally, such as hospitals, airports, museums, etc. The designed system implements a Bluetooth (BT) localization service, and provides wayfinding cues to the user by means of a wearable device equipped with five motors. The last part of our work describes early results obtained by the use of electroencephalographic (EEG) analysis to evaluate the vibrotactile feedback.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

A Cost-Effective Indoor Vibrotactile Navigation System for the Blind

Altini

Farella

Pirini

et al. 2011

Proceedings of the International Conference on Health Informatics

View full text Add to dashboard Cite

show abstract

“…Haptic interfaces are also used in visual aids for the visually impaired [33][34][35][36][37][38]. In addition to skin stimulation by physical vibration, electrical stimulation of muscles has been proposed as a tactile stimulus [33].…”

Section: Introductionmentioning

confidence: 99%

“…In addition to skin stimulation by physical vibration, electrical stimulation of muscles has been proposed as a tactile stimulus [33]. There are proposals to show walking routes to visually impaired persons while avoiding obstacles in the road detected by ultrasonic sensors and to give instructions for a walking route by referring to GPS location information and a map [36][37][38]. In these examples, a computer determines the walking direction of the visually impaired person by using obstacles in front and the position of the person detected by sensors and conveys the direction to the person by tactile stimuli.…”

Section: Introductionmentioning

confidence: 99%

Omnidirectional Haptic Guidance for the Hearing Impaired to Track Sound Sources

Shimoyama

2021

Signals

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We developed a hearing assistance system that enables hearing-impaired people to track the horizontal movement of a single sound source. The movement of the sound source is presented to the subject by vibrating vibrators on both shoulders according to the distance to and direction of the sound source, which are estimated from the acoustic signals detected by microphones attached to both ears. We presented the direction of and distance to the sound source to the subject by changing the ratio of the intensity of the two vibrators according to the direction and by increasing the intensity the closer the person got to the sound source. The subject could recognize the approaching sound source as a change in the vibration intensity by turning their face in the direction where the intensity of both vibrators was equal. The direction of the moving sound source can be tracked with an accuracy of less than 5° when an analog vibration pattern is added to indicate the direction of the sound source. By presenting the direction of the sound source with high accuracy, it is possible to show subjects the approach and departure of a sound source.

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“…The hand gesture based touchless interactions with smart glasses can be useful in many healthcare applications, e.g. for septic safe interaction for surgeons [1], for the elderly in ambient assisted living [2], navigation for blind persons [3], etc.…”

Section: Introductionmentioning

confidence: 99%

Interactions using passive optical proximity detector

Czuszynski

Rumiński

Wtorek

et al. 2015

2015 8th International Conference on Human System Interaction (HSI)

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In this paper we evaluated the possible application of a passive, optical sensor as an interface for human-smart glasses interactions. The designed proximity sensor is composed of set of photodiodes and the appropriate hardware and software components. First, experiments were performed for the estimations of such parameters as distance to an object, its width and velocity. Achieved results were satisfactory. Therefore, next, a set of static and dynamic hand gestures was proposed together with the related recognition method. The method was verified during experiments with volunteers. Experiments have shown that in appropriate lighting conditions it is possible to detect static and dynamic simple hand gestures using inexpensive and computationally efficient sensor. These features enable the use of such a sensor as one of the smart glasses interfaces.

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A tactile system for informing the blind on direction of a walk

Cited by 8 publications

References 8 publications

A Cost-Effective Indoor Vibrotactile Navigation System for the Blind

A Cost-Effective Indoor Vibrotactile Navigation System for the Blind

Omnidirectional Haptic Guidance for the Hearing Impaired to Track Sound Sources

Interactions using passive optical proximity detector

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