ZoneMinder Forums

there is a problem with the motion detected. The image background ist brown background. Some blue object do not trigger an event.

it looks like in zm_image.cpp in line 700 member function Delta, that the motion detection only works with "monochrome" images. Is this the reason for it?

Essentially it is testing the luminosity or brightness effectively of the image. This is quicker and easier than checking individual colour channels. If you are not having good results you can try turning off ZM_OPT_Y_IMAGE_DELTAS and see if that makes a difference.