1. An image processing apparatus connected to a monitoring camera and a display for processing an image input from the monitoring camera, comprising: an image storage unit for storing an image including an input image input from the monitoring camera; a characteristic parameter storage unit for storing a characteristic parameter characterizing a specific image extracted from the input image; a specific image extraction unit, wherein the specific image extraction unit cuts out images having a plurality of predetermined sizes from all parts of the input image stored in the image storage unit, executes character evaluation processing for checking whether or not cut out images have an identical character to the specific image characterized by the characteristic parameter for each cut out image, and extracts the cut out images which are determined to have an identical character to the specific image by the character evaluation processing as an extraction specific image; and a display image generation unit for generating a display image for displaying a whole image of the input image and the extraction specific image on the display.