Vivotek FD8162 Fixed Dome Network Camera User Manual - Use-IP

VIVOTEKNOTE:► How does motion detection work?ACBDThere are two motion detection parameters: Sensitivity and Percentage In the illustration above,frame A and frame B are two sequential images Pixel differences between the two frames aredetected and highlighted in gray (frame C) and will be compared with the sensitivity setting Sensitivityis a value that expresses the sensitivity to moving objects Higher sensitivity settings are expected todetect slight movements while smaller sensitivity settings will neglect them When the sensitivity is setto 70%, the Network Camera defines the pixels in the purple areas as “alerted pixels” (frame D).Percentage is a value that expresses the proportion of “alerted pixels” to all pixels in the motiondetection window. In this case, 50% of pixels are identified as “alerted pixels”. When the percentage isset to 30%, the motions are judged to exceed the defined threshold; therefore, the motion window willbe outlined in redFor applications that require a high level of security management, it is suggested to use highersensitivity settings and smaller percentage valuesUser's Manual - 101