Fingerprint image acquisition apparatus and method thereof

Details Fingerprint image acquisition apparatus and method thereof Fingerprint image acquisition apparatus and method thereof

2006-01-31

2006-01-31

Ahmed, Samir (Department: 2623)

Image analysis

Applications

Personnel identification

C382S299000, C340S005830, C902S003000

Reexamination Certificate

active

06993164

ABSTRACT:
A fingerprint image acquisition apparatus of the present invention includes fingerprint sensing device unit, a CCD device unit, and an image processing unit, the image processing unit comprising: an A/D converting unit for converting and outputting the fingerprint image outputted from the CCD device unit into a digital signal; an image buffer for storing the digital signal from the A/D converting unit; a controller for watching a state of the image buffer, i.e., whether the fingerprint image is inputted and stored to the image buffer, and storing the fingerprint image to a video memory if the storage of the fingerprint image is confirmed; a process executed by the controller, for dividing the fingerprint image into a plurality of unit blocks with a predetermined size; and a process executed by the controller, for dividing the fingerprint image as a center region and a peripheral region, each including a predetermined number of unit blocks, and subdividing the unit block of the center region into at least two or more subdivided blocks.

REFERENCES:
patent: 5054090 (1991-10-01), Knight et al.
patent: 5117294 (1992-05-01), Yano
patent: 5261008 (1993-11-01), Yamamoto
patent: 6289112 (2001-09-01), Jain et al.
patent: 6707934 (2004-03-01), Takeda et al.

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