Fingerprint image transmission system utilizing reversible and non-reversible data compression coding techniques

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United States of America Patent

PATENT NO 5644645
SERIAL NO

08294726

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Abstract

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A fingerprint image transmission system includes a remote computer system and a central computer system. In the remote computer system, a gray image of a fingerprint image sampled by an image scanner portion (10) is compressed by a non-reversible (lossy) coding by a non-reversible coding mechanism (202) and a skeleton pattern generated by a skeleton generating mechanism (201) by inputting the gray image, is compressed by a reversible (lossless) coding by a reversible coding mechanism (203). The compressed gray image and the compressed skeleton pattern are transmitted to the central computer system through a transmission mechanism (31). In the central computer system, a receiver mechanism (41) receives the gray image and the skeleton pattern transmitted from the remote computer system. A skeleton editing portion (60) performs correction of the skeleton pattern decompressed by a skeleton decompressing mechanism (502) with reference to the gray image decompressed by a gray image decompressing mechanism (501), and extracts feature points in the skeleton pattern to record in a database (80).

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Patent Owner(s)

Patent OwnerAddress
NEC CORPORATION7-1 SHIBA 5-CHOME MINATO-KU TOKYO 108-8001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Osuga, Yoshikazu Tokyo, JP 1 24

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