FINGER MOVEMENT POSITION ESTIMATION DEVICE AND FINGERPRINT IMAGE PROCESSOR USING IT, AND FINGER MOVEMENT ESTIMATION METHOD AND FINGERPRINT IMAGE PROCESSING METHOD USING IT

摘要

PPROBLEM TO BE SOLVED: To provide a finger movement position estimation device and a fingerprint image processor using it, and a finger movement position estimation method and a fingerprint image processing method using it, for properly detecting a movement amount of a finger. PSOLUTION: This finger movement position estimation device 100 having a two line sensor 10 extending sideways, adjacently disposed lengthwise, and estimating a movement position and/or the movement amount of one pixel or below of the finger 150 sweeping on the two line sensor has: an estimation pixel data generation means 20 for generating estimation pixel data corresponding to the movement position and/or the movement amount of the finger of one pixel Bn present in a sweep direction among pixels of two rows and two columns based on pixel data obtained at first time t0 by the prescribed adjacent pixels of two rows and two columns; and a finger movement position estimation means 30 for comparing actual pixel data collected in the one pixel at second time t1 and the estimation pixel data generated by the estimation pixel data generation means, and estimating the movement position and/or the movement amount of the finger. PCOPYRIGHT: (C)2009,JPO&INPIT