Face recognition method and system, terminal and storage medium

The invention relates to a face recognition method and system, a terminal and a storage medium. The method comprises the following steps: performing face capture and screenshot on a dynamic video to obtain a static face picture; performing feature value extraction on the static face picture to generate a feature matrix; inputting the feature matrix into a trained BP neural network, and outputtinga face recognition result through the BP neural network, wherein the BP neural network comprises an input layer, a hidden layer and an output layer, input data enters from all neurons of the input layer, calculation is carried out in the hidden layer, a calculation result is input into each neuron of the output layer for calculation, and a face recognition result is obtained. According to the invention, face feature extraction is carried out on the face image to generate the feature matrix, and face recognition is carried out by using the BP neural network and adopting the reverse propagationalgorithm, so that the fac