Image analysis – Image transformation or preprocessing
Reexamination Certificate
2006-11-17
2010-10-05
Le, Vu (Department: 2624)
Image analysis
Image transformation or preprocessing
C382S124000, C382S125000, C382S127000, C382S243000, C382S284000, C382S312000, C600S443000, C713S186000
Reexamination Certificate
active
07809211
ABSTRACT:
Image normalization examines the pixels of two frames, most commonly sequentially obtained sub-images, and mathematically determines the displacement of those pixels from the first frame to the second based on pixel data. The pixel data is obtained from a scanning device, and may be for example grayscale value. The image may be for example that of a user's fingerprint, and the image normalization used to form a computed image of the fingerprint from a plurality of sub-images obtained from a fingerprint scanner. The computed image may be stored, compared to a reference frame or otherwise processed, for example for identifying the user.
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Corradini Giovanni
Subert Martin
Taraba Peter
Le Vu
Small Jonathan A.
Tsai Tsung-Yin
Upek, Inc.
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