Coal mine underground high-speed wind meter pointer reading method

The invention discloses an underground coal mine high-speed wind meter pointer reading reading method. A front-end intelligent camera obtains a real-time video frame; carrying out graying treatment; preliminarily judging whether a high-speed wind meter exists in the picture or not by a template matching algorithm; the template is matched with the specific position of the high-speed wind meter; carrying out binarization segmentation on the image of the high-speed wind meter through a K-means clustering algorithm; searching a circle and a circle center through Hough transform; two circle centers meeting requirements are screened out through priori knowledge of the circle centers of minute and second dial plates in the high-speed wind meter; respectively calculating a minute dial angle value and a second dial angle value by taking the two circle centers as the original points of pointers; converting the minute dial angle value and the second dial angle value into an actual dial total scale value; and displaying