1. An image processing apparatus comprising: a processor configured to process an image according to a preset process in response to receiving the image; and a controller configured to control the processor to detect a figure of a human within a video frame based on a feature vector data value according to histograms of oriented gradients (HOG) algorithm of the video frame of the image input to the processor, wherein the controller is configured to divide the video frame into a foreground corresponding to a region which comprises a moving object and a background corresponding to a region which excludes the foreground, to remove the background, to convert a target region having a preset area comprising at least a part of the foreground without the background into a binary image, and to derive the feature vector data value from the binary image.