Camera terminal and monitoring system

A camera terminal in a monitoring system for imaging a monitoring subject region by operating, in coordination with one another, multiple camera terminals, said camera terminal comprising:

• a camera having a function to change an imaging region;
• a communication unit operable to transmit and receive information identifying the imaging region to and from other camera terminals;
• and
• an adjusting unit operable, where each camera terminal has a monitoring responsible region which is an imaging region to be monitored, and based on the information received by said communication unit from another camera terminal, to determine the monitoring responsible region to which the camera terminal belongs so that the monitoring responsible region to which the camera terminal belongs adjoins, without a gap, the monitoring responsible region of the another camera terminal or a boundary of the monitoring subject region, as well as to adjust the imaging region of said camera so that an entire monitoring responsible region is imaged, and
• wherein said adjusting unit is operable to determine a region surrounding a first reference point as the monitoring responsible region, according to i) at least one perpendicular bisector of a line of segment connecting the first reference point provided within the imaging region to which the camera terminal belongs and a second reference point provided within an imaging region of another camera terminal adjoining to the imaging region to which the camera terminal belongs or ii) the perpendicular bisector of the line of segment connecting the first reference point provided within the imaging region to which the camera terminal belongs and the second reference point provided within the imaging region of another camera terminal adjoining to the imaging region to which the camera terminal belongs and a boundary of the monitoring subject region.