Dynamic target tracking system and method of cloud camera

The invention relates to the technical field of image analysis, and discloses a dynamic target tracking system of a cloud camera. The system comprises a server and at least one rotatable camera in network connection with the server, wherein a central processing unit is arranged in the server; a background suppression algorithm is preset in the central processing unit; the camera shoots in real time and acquires a shot image and transmits the image to the server; according to the preset background suppression algorithm, the central processing unit carries out background correspondence on two shot images in an adjacent time sequence through a background suppression inter-frame difference method to form an affine relationship, and the central processing unit extracts a moving track of a dynamic target from the adjacent shot images; and the central processing unit calculates the deflection angle of the camera according to the moving track, and the central processing unit controls the camera to deflect according t