Diseño de prototipo electrónico para la interacción emocional de personas no videntes.

Abstract

The work consisted in the implementation of an electronic prototype of artificial vision that allows recognizing certain emotional features of the face for visually impaired people and transmitting them by vibration signals, so that they can interact in a real time conversation facilitating nonverbal emotional expressions. For the stage of the hardware design was implemented a compact device that does not interfere with the body movements, within the components was chosen by a minicomputer and camera Raspberry Pi3, a controller for a vibration actuator and a controller for ambient light. All these devices were attached to a cap with visor. The artificial vision cap can detect a person's face, his neutral state his expression of smile and his expression of surprise, for this was made a collection of approximately 2600 images of 105 people for training various expressions. The results obtained according to 17 surveys 170 tests performed to visually impaired people were aimed at measuring the efficiency of device recognition according to variables such as illumination, difference in height between people talking and battery level. Indoor artificial lighting provided a better detection percentage of 72.5%, the difference of heights in a range of 0-5cm showed a better percentage of detection of 76.39%, for the average level of battery was better detection with 73.94%. According to questions of the degree of acceptance of the product, 88.23% of people said that the electronic prototype seems interesting. The device improved the perception of emotional facial expressions in blind people transmitted by nonverbal language. It is recommended to implement technological devices of social inclusion to improve the quality of life of blind people.