1. An image arrangement method, comprising: selecting a plurality of images; forming a plurality of subtraction value tables from a plurality of data tables that represent the plurality of images, wherein each of said subtraction value tables includes data representative of a difference in RGB data values for each pixel for two of the plurality of images; comparing the subtraction value tables; arranging the subtraction value tables in an arrangement order according to a predetermined basis according to the comparing; and arranging the plurality of images according to the arrangement order of the subtraction value tables.