1. An apparatus comprising: one or more processors; a memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for: extracting feature points from a plurality of images captured while changing a capture point such that at least one of a capture position and a capture orientation is changed; tracking feature points extracted from the same area of the plurality of images to associate the tracked feature points with one another; calculating uncertainty about a position of the associated feature points; classifying the associated feature points according to the position uncertainty; extracting feature points from an image obtained by a capture device capturing a certain object; extracting prestored feature points matched with the extracted feature points to recognize the object; acquiring augmented reality content corresponding to the recognized object; and combining the acquired augmented reality content with the image obtained by capturing the object to display the combined augmented reality content; wherein the position uncertainty is calculated according to a linearity index computed among the associated feature points of the plurality of images; and the classifying of the feature points comprises: classifying the associated feature points as a recognition reference feature point group when the linearity index is equal to or less than a predetermined threshold value and classifying the associated feature points as a dummy feature point group when the linearity index is greater than the predetermined threshold value.