How Does Motion Detection Work

Applies to: B400; B800; D400; D800; RLC-410; RLC-410-5MP; RLC-410S; RLC-411; RLC-411-5MP; RLC-411S; RLC-411S-5MP; RLC-420;RLC-420-5MP; RLC-422-4MP; RLC-422-5MP; RLC-423; RLC-423S; RLC-511; RLC-520; E2 outdoor; C1; C1 Pro; C2; C2 Pro; E1; E1 Pro; E1 Zoom; Reolink Lumus; RLC-210W; RLC-410W; RLC-410W-5MP; RLC-410WS; RLC-411WS; RLC-411WS-5MP; RLC-422W; RLC-423WS; RLC-511W;RLC-422W-5MP; RLC-522;

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 process.