1. An image processing method for generating a panoramic image from a plurality of images obtained by a respective plurality of image sensing devices, wherein the plurality of image sensing devices are located to have fixed relative positions, said method comprising the steps of: calculating first transform conditions, each of which is for transforming an orientation of a respective one of the plurality of image sensing devices at a target image frame into an orientation at a predetermined image frame which is different from the target image frame; obtaining second transform conditions, each of which corresponds to a respective one of the plurality of image sensing devices, based on each of coordinate systems of the image sensing devices and a coordinate system of a virtual image sensing device; calculating, for each of the image sensing devices, a respective orientation of the virtual image sensing device at the predetermined image frame based on the first and second transform conditions; calculating, based on the calculated orientations of the virtual image sensing device, correction transforms each of which is for reducing a shakiness of respective image sensing devices at the target image frame; composing a panoramic image using images sensed at the target image frame by the plurality of image sensing devices; and displaying the panoramic image by applying the correction transforms.