Method and device for capturing target object and video monitoring device

A video monitoring device, comprising:

• a panoramic camera, a detail camera and a processor;
• wherein,
• the panoramic camera is configured for:
• acquiring a current panoramic video frame and sending the current panoramic video frame to the processor;
• the processor is configured for:
• detecting target objects in the current panoramic video frame, and determining first position information and a size of each of the target objects in the current panoramic video frame;
• determining detail camera position information corresponding to each of the target objects based on the first position information of the target object and a pre-constructed position mapping relationship between the panoramic camera and the detail camera, and determining a magnification corresponding to each of the target objects based on the size of the target object;
• performing block processing on the target objects based on the detail camera position information and the magnification corresponding to each of the target objects, to obtain at least one target block;
• wherein, each target block comprises one or more target objects;
• for each target block, identifying one or more first target objects, at one or more edge positions, among the one or more target objects comprised in the target block;
• determining detail camera position information corresponding to the target block based on detail camera position information corresponding to each of the first target objects;
• and determining a magnification corresponding to the target block based on a magnification corresponding to each of the first target objects;
• and for each target block, sending the detail camera position information and the magnification corresponding to the target block to the detail camera;
• and
• the detail camera is configured for:
• adjusting its own position and magnification based on received detail camera position information and magnification corresponding to the target block, and capturing the target block.