Browsing by Subject "Fingerprint image compression"

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    Coding of fingerprint images using binary subband decomposition and vector quantization
    (SPIE, 1998-01) Gerek, Ömer N.; Çetin, A. Enis
    In this paper, compression of binary digital fingerprint images is considered. High compression ratios for fingerprint images is essential for handling huge amount of images in databases. In our method, the fingerprint image is first processed by a binary nonlinear subband decomposition filter bank and the resulting subimages are coded using vector quantizers designed for quantizing binary images. It is observed that the discriminating properties of the fingerprint, images are preserved at very low bit rates. Simulation results are presented.
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    ItemOpen Access
    Polyphase adaptive filter banks for fingerprint image compression
    (The Institution of Engineering and Technology, 1998-10-01) Gerek, Ö. N.; Çetin, A. Enis
    A perfect reconstruction polyphase filter bank structure is presented in which the filters adapt to the changing input conditions. The use of such a filter bank leads to higher compression results for images containing sharp edges such as fingerprint images.