Tripwire will detect if there is any object crossing the warning line, it can support different direction selection, such as A->B, B->A and bidirectional, and it can activate record, snapshot and alarm according to the judgment result Avoid areas such as glass, reflective ground, water surface, and areas interfered by branch, shadow and mosquito.Analytics analysis function is not recommended to be used in scene with dense targets and frequent illumination change. Reduce the complexity of surveillance scene as possible as you can.The target should be continuously present in the image for no less than two seconds, and Event 134 the moving distance of the target should be larger than its width and no less than 15 pixels (CIF image).Brightness difference between the target and the background should not be less than 10 greyscale.The target size in the image should not be less than 50×50 pixels.The target should be less than 10% of the image.
