Provided are a monitoring system and an operating method thereof, and more particularly, an image processing method and apparatus for removing a motion blur of a wide dynamic range (WDR) image by using a machine learning algorithm. The image processing method includes: generating an overlap image by overlapping a first image having a predetermined exposure time and a second image having an exposure time different from that of the first image; detecting a region of interest (ROI) in which a motion blur occurs in the overlap image; and performing a motion blur removing operation of changing an image in the ROI to any one of the first image and the second image by applying a first machine learning algorithm.