Mask detection method based on LFFD

The embodiment of the invention discloses a mask detection method based on LFFD. The mask detection method comprises the following steps: 1, making a training set; 2, constructing a preset SP-LFFD face detection network and a preset classification network, and training; and 3, performing face detection on the input picture, obtaining a face position, and sending the face position to the classification network to judge whether each face target of the input picture wears a mask; wherein the preset SP-LFFD face detection network comprises 25 convolution layers, the 25 convolution layers are divided into four parts, and each convolution layer adopts a SPConv convolution unit based on Split to replace conventional convolution. According to the method, an LFFD detection framework and Resnet18 image classification are adopted for a mask wearing detection scene, SPConv convolution is adopted to replace conventional convolution, redundant information in the conventional convolution is reduced, the reasoning speed can