Multi-scale fire target identification method and system

The invention provides a multi-scale fire target identification method and system, and the method comprises the following steps: obtaining a training set which is generated through marking a fire image; carrying out clustering according to the training set, so that a plurality of prior frames are generated; constructing a target detection model and setting the parameters of the target detection model at least according to the prior frames, wherein the target detection model is generated by replacing a CSPDarknet53 trunk feature extraction network in a YOLOv4 algorithm with a MobileNet network; training the target detection model through the training set to generate a fire detection model; and performing fire detection on the input video or image through the fire detection model, and judging whether a fire alarm is sent or not. The parameter quantity of the fire detection model is greatly simplified, the requirements of embedded equipment and real-time performance can be met, and the recognition speed is highe