Image emphasizing device for fingerprint verification

• Main Authors: MATSUMOTO NORIYUKI, KIMURA AKIHITO, UMEZAKI TAIZO
• Format: Patent
• Language: English
• Published: 06.04.2004
• Edition: 7
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

A minute amplitude value emphasis device 2 has Fourier transformation devices 211, 212 which treat a two-dimensional original pictorial image 200 with a Fourier transformation to determine Fourier coefficients in x-axis and y-axis directions. Weight devices 221, 222 emphasize the respective Fourier...