1. A method for creating a panorama, comprising: (a) photographing a plurality of images, each image having a different orientation of a same subject with respect to a same background; (b) determining, with respect to each image, a size and a position of a reference region including the subject for creating a panorama of the subject using the images photographed in step (a); (c) extracting a target region within the reference region from each of the images; (d) detecting same portions in adjacent target regions; (e) creating the panorama of the subject by combining the adjacent target regions on the basis of the same portions; and wherein step (b) further comprises: (f) calculating at least two difference images having a difference between adjacent images; (g) calculating a merged image between the difference images; (h) setting a minimum threshold of pixels constituting the merged image; (i) increasing the minimum threshold; (j) determining a pixel position greater than the threshold among the pixels constituting the merged image; and (k) calculating a minimum region including all pixels of the merged image values of which are greater than the minimum threshold.