1. An image capturing apparatus comprising: a photograph capturing section that captures a photograph to acquire image data; a database in which a predetermined frequency component of at least one photograph captured in a past by the photograph capturing section is stored; a frequency component extracting section that extracts the predetermined frequency component from image data of a photograph that is newly captured by the photograph capturing section; a region dividing section that divides a frequency component of the newly captured photograph into two or more divided regions; a maximum neighboring region calculating section that collates a frequency component in each divided region of the newly captured photograph and a frequency component in each corresponding divided region in the database, and calculates a maximum neighboring region where a total number of coincidences of components included in respective frequency components is a maximum; and a component replacing section that replaces a partial first extraction component extracted from a frequency component outside the maximum neighboring region of each divided region of the newly captured photograph with a partial second extraction component extracted from a frequency component outside the maximum neighboring region of each corresponding divided region in the database, at a position of a frequency component in the newly captured photograph corresponding to a position of the second extraction component.