1. A finger print minutiae extraction method comprising: acquiring fingerprint image data; partitioning said fingerprint image data into at least one data block corresponding to a local area of said image data; generating a histogram function of a contrast level of said image data corresponding to said data blocks; and performing a histogram transformation of said histogram function, wherein said histogram transformation is adapted to the contrast level of said local area of said fingerprint image data and pre-enhanced fingerprint image data is generated with local enhancement.