Method and system for automatically counting moving targets in fitness video

Abstract

The invention relates to the technical field of target recognition, in particular to an automatic counting method and system for moving targets in a fitness video, and the method comprises the following steps: screening regions which accord with the relative position relation of hip joints, knee joints and ankle joints in continuous image frames of the fitness video, and extracting the coordinates of the center of mass; according to the method, the areas conforming to the relative position relation of the hip joint, the knee joint and the ankle joint are screened in the continuous image frames, the human body feature points are positioned by means of the centroid coordinate extraction mode, the recognition precision of the key skeleton structure in the target recognition stage can be improved, and interference caused by posture changes is reduced. On the basis, through sequential association of target joint centroid coordinates between continuous image frames, a motion path is constructed, a dynamic updating mechanism of a state vector is introduced, coordinate positions and speeds are used as state description quantities, and a smooth trajectory sequence with higher dynamic consistency is constructed in combination with residual feedback of a measured value and a predicted value of a current frame.

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