Research advances of indoor navigation for blind people: A brief review of technological instrumentation

Plikynas, Darius; Gudauskis, Marius; Budrionis, Andrius; Daniušis, Povilas; Sliesoraitytė, Ieva

doi:10.1109/mim.2020.9126068

Cited by 26 publications

(17 citation statements)

References 62 publications

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“…Consistent with the literature, we also observed that ultrasonic sensors were the most common technology in sensor-based navigation systems [35], [81]- [83]. This result may be explained by the low cost of these sensors [15] or because they do not require light to work, while cameras do [39].…”

Section: A Technologiessupporting

confidence: 90%

“…This review shows that studies that used computer vision-based technologies reported high accuracy in detecting obstacles [25], [35], a decrease in the navigation time [41], [49], [73], and in the number of collisions [35], [49], [57], [73], [75]. Another possible explanation for the wide use of these technologies may be due to advances in this field, that according to Plikynas et al [81], enables the development of solutions that can increase the mobility and quality of life of visually impaired people.…”

Section: A Technologiesmentioning

confidence: 84%

“…Our findings show a wide range of studies using computer vision-based technologies. This may be explained by the higher level of scene interpretation that these technologies provide compared to sensor-based technologies [11], [81]. This review shows that studies that used computer vision-based technologies reported high accuracy in detecting obstacles [25], [35], a decrease in the navigation time [41], [49], [73], and in the number of collisions [35], [49], [57], [73], [75].…”

Section: A Technologiesmentioning

confidence: 95%

“…In accordance with [81], RGB-D cameras and sensors were the most popular choice among video-based systems. This review shows the use of these technologies for both indoor and outdoor environments, which is contrary to previous studies which suggested these technologies were only applied in indoor environments [81]. Furthermore, our results show that stereo cameras were a popular choice, as Lin and Han reported [51].…”

Section: A Technologiesmentioning

confidence: 99%

“…These results may be explained by the fact that these types of cameras can sense image depth information, which is an essential feature in object detection and scene interpretation [51], [73]. While stereo cameras compute image depth data captured from two or more lenses, RGB-D cameras compute depth information with RGB values using infrared sensors and color sensors [11], [51], [81].…”

Section: A Technologiesmentioning

confidence: 99%

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A Systematic Review of Wearable Devices for Orientation and Mobility of Adults With Visual Impairment and Blindness

et al. 2021

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Wearable devices have been developed to improve the navigation of blind and visually impaired people. With technological advancements, the use and research of wearable devices have been increasing. This systematic review aimed to explore existing literature on technologies used in wearable devices intended to provide independent and safe mobility for visually impaired people. Searches were conducted in six electronic databases (PubMed, Web of Science, Scopus, Cochrane, ACM Digital Library and SciELO). Our systematic review included 61 studies. The results show that the majority of studies used audio information as a feedback interface and a combination of technologies for obstacle detectionespecially the integration of sensor-based and computer vision-based technologies. The findings also showed the importance of including visually impaired individuals during prototype usage testing and the need for including safety evaluation which is currently lacking. These results have important implications for developing wearable devices for the safe mobility of visually impaired people.

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