A blind image perception system is designed using image edge detection technology to make blind people sensing image information through skin electrical stimulation

provide a new method for blind people to obtain visual information. This system consists of two parts: The first part is image acquisition and processing part

which is worn on the blind person’s head; the second part is an electrical tactile device

which is worn on the abdomen of the blind for generating electrical stimulation of the skin. The blind people capture a image through the camera. The system performs edge detection on this image to obtain the edge image. This edge image is then sent to the microcontroller unit（ MCU） of the electrical tactile device. The MCU controls the two-dimensional electrode array to generate corresponding electrical stimulation

according to the received edge image data

so the blind people sense the edge information of the image through electrical tactile of the skin. The blind image perception system let the blind can " see" the visual image in a tactile way

which greatly improve the quality of life of the blind man.