Facial Detection and Recognition using OpenCV on Raspberry Pi Zero

In this modern era, security has become a major concern. The amount of criminal activities has increased exponentially over the last three decades. Apart from that, security in places such as airports and railways stations is cumbersome and often ineffective in various cases. The motivation for developing this system was the need for a system to identify suspicious individuals in an time, cost and resource effective manner. In this paper, we discuss a system which consists of a Raspberry Pi Zero connected to a Raspberry Pi camera module, Capacitive touch sensor and OLED display. This system uses Haar Cascade classifier for face detection in an image followed by Local Binary Pattern Histogram for facial Recognition (LBPH). The LBPH algorithm is implemented using OpenCV.