Method and device for detecting and tracking barbell central point

The invention relates to a method and device for detecting and tracking a barbell central point. The method comprises the following steps of: extracting a barbell central point in a first image frame; making a rhombic matrix for all image frames on the basis of the barbell central point, recording the position of each matrix point and setting the weight of each matrix point; carrying out LK pyramid optical-flow method tracking on a central point of the rhombic matrix in every adjacent two image frames to obtain a tracking point and carrying out optical-flow method tracking on the rest multiple matrix dots to obtain respective tracking points; removing the wrong tracking point and removing a tracking point symmetric to the tracking point with respect to a rhombic central point; and averaging the weight of all the tracking points after adding to obtain a smooth tracking vector of the barbell central point and confirming the tracked barbell central point, wherein the weight of all the tracking points is the weight of the corresponding matrix dots. The method provided by the invention can realize the detection and tracking of the barbell central point and effectively inhibit a tracking error brought by a trailing phenomenon.