Imaging system and imaging method

An imaging method, in taking an image of a subject to be tracked in the imaging area of a sensor camera with a zoom camera while performing wide-angle imaging with the sensor camera, comprising the steps of:

• extracting the position and the size of a moving subject from a sensor image obtained by the sensor camera that performs wide-angle imaging;
• determining one imaging angle of view based on a plurality of the extracted moving subjects;
• allowing the zoom camera to perform imaging of a plurality of the extracted moving subjects in the imaging area of the sensor camera as tracking targets based on the determined position of the angle, moving speed, and size and managing the order of the imaging operation;
• holding the imaging angle of view for a given time at the time when all the moving subjects in the imaging angle of view become static;
• assigning ID to an imaging angle of view, assigning the same angle of view ID to the imaging angle even after all the moving subject become static, and controlling the priority of the imaging operation of the imaging angle of view including the same moving subject;
• and
• allowing the zoom camera to take an image of a tracking target in the imaging area of the sensor camera while performing wide-angle imaging with the sensor camera.

An imaging system comprising:

• a sensor camera that performs wide-angle imaging;
• a zoom camera that takes an image of a subject to be tracked in an imaging area of the sensor camera;
• and
• a controller that controls the sensor camera and zoom camera, wherein
• the controller includes:
• a moving subject detection unit that extracts the position and the size of a moving subject from a sensor image obtained by the sensor camera;
• an imaging angle of view calculation unit that determines one imaging angle of view based on a plurality of moving subjects extracted by the moving subject detection unit;
• a tracking target image acquisition unit that allows the zoom camera to perform imaging of the area specified depending on the position of the angle, moving speed, and size which are determined by the imaging angle of view calculation unit;
• an angle of view tracking order management unit that manages the order of the imaging operation of the zoom camera;
• a static imaging angle of view management unit that holds the imaging angle of view for a given time at the time when all the moving subjects in the imaging angle of view become static;
• and a camera relative position correction unit that calculates the imaging position in the imaging area of the sensor camera, and assigns ID to an imaging angle of view;
• assigns the same angle of view ID to the imaging angle even after the moving subject becomes static;
• controls the priority of the imaging operation of the imaging angle of view including the same moving subject;
• and allows the zoom camera to take an image of a tracking target in the imaging area of the sensor camera while performing wide-angle imaging with the sensor camera.