Mobile tracking system, camera and photographing method

A camera comprising:

• an autonomic photographic device which a photographs and recognizes a mobile object;
• an obtaining device which obtains moving direction information of the mobile object;
• a position deriving device which derives the position of the camera;
• a communication device which transmits an identifier of the camera, position information of the camera, and moving direction information of the mobile object to another camera and receives an identifier of another camera, position information of another camera, and moving direction information of the mobile object from another camera;
• a judgment device which judges whether the camera moves based on the information obtained by the camera and the information from another camera;
• and
• a changing device configured to change a translational position of the camera so that the camera can photograph a moving mobile object, when the judgment device judges that the camera moves,
• wherein the changing device comprises:
• a setting device which sets a destination to which the camera moves so that the camera can photograph the moving mobile object based on the position information of the camera and the moving direction information when the judgment device judges that the camera moves;
• and
• a moving device which moves the camera to the set destination upon the setting device setting the set destination.

A photographing method comprising:

• performing the following steps using a processor;
• a photographing step of photographing using a camera, that includes an autonomic photographic device, and recognizing a mobile object;
• a position deriving step of deriving a position of the camera;
• an obtaining step of obtaining moving direction information of the mobile object;
• a communication step of transmitting an identifier of the camera, position information of the camera, and moving direction information of the mobile object to another camera and receives an identifier of another camera, position information of another camera, and moving direction information of the mobile object from another camera;
• a judgment step of judging whether the camera moves based on the information obtained by the camera and the information from another camera;
• a changing step of changing a translational position of the camera so that the camera can photograph a moving mobile object, when the judgment step judges the camera moves,
• wherein the changing step comprises:
• a setting step of setting a destination to which the camera moves so that the camera can photograph the moving mobile object based on the position information of the camera and the moving direction information when the judgment step judges that the camera moves;
• and
• a moving step of moving the camera to the set destination upon the setting step setting the set destination.