REGISTERING APPARATUS, AUTHENTICATION SYSTEM, REGISTERING PROGRAM STORAGE MEDIUM AND REGISTERING METHOD

摘要

A registering apparatus includes: a first image data acquiring unit that acquires first image data from a first region on a recording medium; a second image data acquiring unit that acquires second image data from a second region that includes the first region; a third image data acquiring unit that acquires third image data from a third region that does not include the first region and differs from the second region when a correlation value between the second image data and the first image data is equal to or greater than a predetermined first threshold value; and a registering unit that registers the first image data as registration data that are image data to be used in authentication of the recording medium when a correlation value between the third image data and the first image data is equal to or less than a second threshold value.