A Kinect-Based Wearable Face Recognition System to Aid Visually Impaired Users

Laurindo Britto Neto, Felipe Grijalva, Vanessa Regina Margareth Lima Maike, Luiz César Martini, Dinei Florencio, Maria Cecília Calani Baranauskas, Anderson Rocha, Siome Goldenstein

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

71 Citas (Scopus)


In this paper, we introduce a real-time face recognition (and announcement) system targeted at aiding the blind and low-vision people. The system uses a Microsoft Kinect sensor as a wearable device, performs face detection, and uses temporal coherence along with a simple biometric procedure to generate a sound associated with the identified person, virtualized at his/her estimated 3-D location. Our approach uses a variation of the K-nearest neighbors algorithm over histogram of oriented gradient descriptors dimensionally reduced by principal component analysis. The results show that our approach, on average, outperforms traditional face recognition methods while requiring much less computational resources (memory, processing power, and battery life) when compared with existing techniques in the literature, deeming it suitable for the wearable hardware constraints. We also show the performance of the system in the dark, using depth-only information acquired with Kinect's infrared camera. The validation uses a new dataset available for download, with 600 videos of 30 people, containing variation of illumination, background, and movement patterns. Experiments with existing datasets in the literature are also considered. Finally, we conducted user experience evaluations on both blindfolded and visually impaired users, showing encouraging results.

Idioma originalInglés
Número de artículo7571103
Páginas (desde-hasta)52-64
Número de páginas13
PublicaciónIEEE Transactions on Human-Machine Systems
EstadoPublicada - feb. 2017
Publicado de forma externa


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