Appeal No. 1999-2069 Application 08/397,639 ii) carrying out template matching, with which said template regions are matched with the radiation images other than said single radiation image, iii) thereby obtaining at least three corresponding points in each of the plurality of the radiation images, iv) taking the corresponding points in a single radiation image, which is among the plurality of the radiation images, as reference corresponding points, v) calculating factors of affine transformation with the method of least squares, said affine transformation being represented by the formula − u ‚ − a b ‚ − x ‚ − e ‚ - - = - - - - + - - ‰ v ™ ‰ c d ™ ‰ y ™ ‰ f ™ wherein u and v represent the coordinates of the reference corresponding point, x and y represent the coordinates of the corresponding point to be transformed, a, b, c, and d are the factors representing correction with a rotating operation and correction with an enlargement or reduction factor, and e and f are the factors representing correction with parallel translation, and vi) carrying out affine transformation, in which the calculated factors of affine transformation are used, and with which the values of coordinates of the corresponding points in the radiation images other than said single radiation image having the reference corresponding points are transformed into values of coordinates of the reference corresponding points such that the reference corresponding points and the transformed corresponding points in the radiation images other than said single radiation image having the reference corresponding points may coincide with one another; wherein said affine transformation step is performed so that each of enlargement or reduction, rotation, and parallel translation of the radiation images, other than said single radiation image, occur simultaneously. - 3 -Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007