1. An object identification parameter learning system for learning an identification parameter used for identifying an object in an image by using a feature of the object extracted from the image, the system comprising: a feature extracting device for extracting the feature of the object from the image; a background specifying device for specifying a background area of the image from which the object as an identification target is eliminated; a background replacing device which outputs a plurality of kinds of features of the object as learning samples by replacing feature components of the background area with feature components of a partial image of a moving picture where the object is filmed for the extracted feature of the object; and an identification parameter update device for updating the identification parameter used for identifying the object based on the learning sample.