System and method for motion detection in a surveillance video

A non-transitory processor-readable medium storing code representing instructions to cause a processor to:

• smooth a current image of a scene to produce a smoothed image;
• subtract pixel values of a background image of the scene from corresponding pixel values of the smoothed image to produce an altitude difference image;
• smooth the altitude difference image with a first standard of deviation of pixel values of the altitude difference image to produce a first smoothed altitude difference image;
• smooth the altitude difference image with a second standard of deviation of pixel values of the altitude difference image to produce a second smoothed altitude difference image;
• multiply pixel values of the first smoothed altitude difference image with pixel values of the second smoothed altitude difference image to produce a weighted difference image;
• convolve the weighted difference image to produce a convoluted difference image;
• apply a threshold to each pixel of the convoluted difference image to produce a thresholded difference image, pixels having a value less than the threshold being removed from the thresholded difference image and classified as background pixels;
• and
• determine foreground pixels based on the thresholded difference image.