How Does Motion Detection Work

Applies to: All Reolink cameras and NVRs (except battery-powered cameras)

Reolink camera judges whether each macroblock has moved by dividing the grid. When the number of moved blocks reaches a certain proportion of the number of armed blocks, the alarm will start. 

The working principle of motion detection is that camera will judge it as motion when differences in 2 frames reach 0.5%-10% (customize by adjusting motion sensitivity) of the image.  When the picture changes, the number calculated and compared will exceed the threshold and instruct the system to automatically make corresponding processing.