Water meter plum-blossom-shaped wheel rotation tooth number detection method and system for water meter verification

The invention provides a water meter plum-blossom-shaped wheel rotating tooth number detection method for water meter verification. The method comprises the steps that continuous multi-frame water meter dial images are obtained; for each frame of image, a preset positioning model is adopted to obtain a positioning result of the plum blossom wheel, the plum blossom wheel image is intercepted according to the positioning result, the intercepted image is converted into a grayscale image, the grayscale image is scaled to a set size, the scaled image is converted into a binary image, closing operation and median filtering are sequentially performed on the binary image, and the plum blossom wheel is obtained. Carrying out AND operation on the median filtered image and the mask, and carrying out pixel summation operation on the result image to obtain the point count of the current frame; according to the point count of each frame of image, based on a flow peak detection algorithm and a compensation algorithm, the nu