Video image monitoring method involves comparing continuously detected current image or section with reference image or section, deriving coefficient for triggering message or alarm signal

摘要

The method involves comparing a continuously detected current image or image section with a stored reference image or image section, whereby both images are in a digitized signal form dependent on the intensity of each pixel, using correlation analysis. A correlation output signal is generated that indicates the correlation result between the images or image sections, then a coefficient is derived for triggering a message or alarm signal.