An enhanced obstacle avoidance method for the visually impaired using deformable grid

Kang, Mun-Cheon; Chae, Sung-Ho; Sun, Jee-Young; Lee, Sungho; Ko, Sung-Jea

doi:10.1109/tce.2017.014832

Cited by 30 publications

(4 citation statements)

References 22 publications

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“…Usually one or several digital cameras are coupled to compute and process visual information, next to provide feedback to users [30]. The feedback can be vibration [2,69], electro-tactile [40] or acoustic information, including audio signal [1,4,42] and stereo sound [34,68]. Some systems can also perform object classification or recognition based on the captured image information and provide various feedback to the user [2,43].…”

Section: Camera-based Assistant Devicesmentioning

confidence: 99%

A multichannel LED-based lighting approach to improve color discrimination for low vision people

Yang¹,

Dinet²,

Katemake³

et al. 2023

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The population of low vision people increases continuously with the acceleration of aging society. As reported by the World Health Organization (WHO), most of this population is over the age of 50 years and 81% were not concerned by any visual problem before. A visual deficiency can dramatically affect the quality of life and challenge the preservation of a safe independent existence.This study presents a LED-based lighting approach to assist people facing an age-related visual impairment. The research procedure is based on a psychophysical experiment consisting in the ordering of standard color samples. Volunteers wearing low vision simulation goggles performed such an ordering under different illumination conditions produced by a 24-channel multispectral lighting system. A filtering technique using color rendering indices coupled with color measurements allowed to objectively determine the lighting conditions providing the best scores in terms of color discrimination.Experimental results demonstrated that white light obtained by a special mixing of three selected channels can improve the color perception of low vision people in comparison to white LEDs nowadays available on the market for general lighting. Even if additional studies are required to go further, these first results give hope for the design of smart lighting devices that might adapt to the visual needs of the visually impaired.

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Section: Camera-based Assistant Devicesmentioning

confidence: 99%

A multichannel LED-based lighting approach to improve color discrimination for low vision people

Yang¹,

Dinet²,

Katemake³

et al. 2023

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“…Different technologies have been used with the aim of creating better devices, the most significant being based on ultrasonic sensors and optical/vision systems [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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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“…Guide dog is incapable of detecting overhanging object, and needs costly training, which may be unaffordable to the visually impaired individuals [1], [2]. Most existing ETAs are only intended for obstacle detecting or/and feedback [4][5][6][7][8][9], and cannot provide way-finding and route following functions. Although some ETAs were designed with way-finding and route following functions, such as the cactus tree based algorithm proposed in [10], obstacle (especially the dynamic obstacles) detecting and avoiding are ignored.…”

Section: Introductionmentioning

confidence: 99%

Virtual-Blind-Road Following-Based Wearable Navigation Device for Blind People

Bai

Lian²,

Liu³

et al. 2018

IEEE Trans. Consumer Electron.

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To help the blind people walk to the destination efficiently and safely in indoor environment, a novel wearable navigation device is presented in this paper. The locating, way-finding, route following and obstacle avoiding modules are the essential components in a navigation system, while it remains a challenging task to consider obstacle avoiding during route following, as the indoor environment is complex, changeable and possibly with dynamic objects. To address this issue, we propose a novel scheme which utilizes a dynamic sub-goal selecting strategy to guide the users to the destination and help them bypass obstacles at the same time. This scheme serves as the key component of a complete navigation system deployed on a pair of wearable optical see-through glasses for the ease of use of blind people's daily walks. The proposed navigation device has been tested on a collection of individuals and proved to be effective on indoor navigation tasks. The sensors embedded are of low cost, small volume and easy integration, making it possible for the glasses to be widely used as a wearable consumer device. Index Terms-Virtual blind road, obstacle avoiding, route following, wearable navigation device Jinqiang Bai got his B.E. degree and M.S. degree from China Uiversity of Petroleum in 2012 and 2015, respectively.

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An enhanced obstacle avoidance method for the visually impaired using deformable grid

Cited by 30 publications

References 22 publications

A multichannel LED-based lighting approach to improve color discrimination for low vision people

A multichannel LED-based lighting approach to improve color discrimination for low vision people

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

Virtual-Blind-Road Following-Based Wearable Navigation Device for Blind People

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