1. An imaging processing device comprising: position information generation means for, on the basis of a plurality of captured images which are sequentially obtained through image capturing by image capturing means while the image capturing means is moved, generating position information which represents a relative positional relationship of the captured images when the plurality of the captured images are aligned on a predetermined plane so as to overlap same subjects, which are included in the different captured images, with each other; strip image generation means for, for each of the plurality of the captured images, cutting out an area on the captured image from a predetermined reference position on the captured image to the reference position on another captured image which is aligned on the plane so as to overlap with the captured image and generating a strip image including the area, when the plurality of the captured images are aligned on the plane on the basis of the position information; and panoramic image generation means for generating a panoramic image by aligning and stitching the strip images which are obtained from the plurality of the captured images, the panoramic image depicting an image field larger than any single one of the plurality of captured images, wherein the strip image generation means generates a plurality of the strip images from the captured images while shifting the areas on the captured images in a predetermined direction relative to the plurality of the captured images, and wherein the panoramic image generation means generates an image group formed of a plurality of ordered panoramic images, each panoramic image depicting the same image field and, wherein, for each portion of the image field comprising strips in the plurality of panoramic images, the sequence of the ordered panoramic images depicts the portion of the image field as sequentially captured during image capturing.