Patent ID: 8103108

Claim:
An image processing apparatus, comprising: an input data obtaining section for obtaining input image data; a features extracting section for extracting features of the input image data; at least one of a storage section in which features of a reference image are stored and a reference image obtaining section for obtaining features of a reference image from an external apparatus communicably connected with the image processing apparatus; and a similarity determination section for comparing the features of the input image data with the features of the reference image so as to perform a determination process in which it is determined whether the input image data is image data corresponding to the reference image or not, the similarity determination section changing the determination process in accordance with related information of the input image data, and further comprising: an evaluated value storage section in which (i) an evaluated value set with respect to each of groups into which each item of the relation information is classified in accordance with contents of the item and (ii) a reference evaluated value set with respect to each item of the relation information are stored; and an evaluated value calculation section for calculating an evaluated value for each item of related information of input image data, in accordance with contents of each item and the evaluated value stored in the evaluated value storage section, the similarity determination section performing the determination process in such a manner that a difference between the evaluated value for each item calculated by the evaluated value calculation section and the reference evaluated value for each item is calculated with respect to each item, a summation calculated by adding each difference is compared with a third threshold value, and a similarity is determined in accordance with a result of the comparison.