Coal mine underground early warning method, system and equipment based on image key information identification

The invention discloses an underground coal mine early warning method, system and device based on image key information identification, and relates to the technical field of image processing, and the method comprises the steps: obtaining a key position of an underground coal mine monitoring device in a video monitoring image; performing cutting preprocessing on the video monitoring image according to an area corresponding to the key position to obtain a key sub-image; analyzing the image information displayed in the key sub-image, and generating early warning information according to the analyzed content and the corresponding monitoring equipment information; and sending the early warning information to a ground control room for realizing underground early warning. After an underground video monitoring device obtains a video image, key information in the image is directly preprocessed and obtained, so that the monitoring video image originally transmitted to a control room is converted into more direct early