An object of the present invention is to provide a method that can properly carry out the evaluation of a displacement and an overlapping area between first and second patterns formed through double patterning and a device therefor.To accomplish the above object, a method and a device are provided that execute a two-step matching between combined information having information concerning the first pattern combined with design information of the second pattern formed through a second exposure of double patterning and images displaying the first and second patterns, and on the basis of a moving amount of the design information of the second pattern, a displacement amount between the first and second patterns is determined.