Monitoring camera of complex filtering type robust to change of visibility state and image monitoring system having the same

It relates to a video surveillance system of the composite filtering method robust to changes in the steering locked-state monitoring camera, and it is applied, hardware filter and the ISP (Image to block any of the lens portions having passed through the light infrared range and visible light range and transmitting the other of Signal Processor) a color image or a lens unit from the black-and-white image by removing a component for reducing the constant distance of the front comprises a color image or a software filter for filtering a black-and-white image produced by the ISP, a plurality of filter levels produced by in image of sufficient clarity for identifying always the target, regardless of the steering locked-state of the front monitoring camera being controlled whether to filter the filtering band and the software filter of the hardware filter according to any one of the filtering level corresponding to the current steering locked-state of the lens unit forward It can provide.