Indoor positioning method based on image visual features and electronic device

The invention relates to an indoor positioning method based on image visual features, which comprises the following steps of: matching Wi-Fi (Wireless Fidelity) signal strength of a wireless fidelity tag (WiFi Tag) closest to a current position of a mobile device with a signal strength list to obtain a first position of a first WiFi Tag with the maximum matching degree; matching the SURF descriptors of the images of the WiFi Tag with the SURF descriptors in the signal strength list, and finding the WiFi Tag image with the maximum matching degree so as to obtain a second position of a second WiFi Tag corresponding to the WiFi Tag image with the maximum matching degree; obtaining a third position of a third WiFi Tag according to a homography matrix corresponding to the WiFi Tag image with the maximum matching degree and a positioning error empirical value; and obtaining positioning information of the mobile device according to the first position, the second position and the third position. The invention further