Patent ID: 7734090

Claim:
An information processing device for recognizing a two-dimensional code in which predetermined information is coded by two-dimensionally arranging a plurality of cells according to a predetermined arrangement rule, said information processing device comprising: detecting means for detecting a position determining part used to identify an area of the cells in an image of said two-dimensional code in which area said predetermined information is coded; and obtaining means for obtaining said predetermined information from the arrangement rule of the cells present in the area identified by said position determining part detected by said detecting means; wherein said detecting means detects said position determining part on a basis of binarized data obtained as a result of binarizing the image of said two-dimensional code on a basis of a first threshold value, and said obtaining means detects the arrangement rule of the cells present in the area identified by said position determining part on a basis of binarized data obtained as a result of binarizing the area identified by said position determining part on a basis of a second threshold value different from said first threshold value, and obtains said predetermined information.