6. CONCLUSION AND FUTUREWORK
In this paper, a prototype of an online biometric identification
system based on eigenpalm, eigenfinger, and eigenthumb
features was developed. A simple preprocessing technique
was introduced. It should be noted here that intro-
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Recognition results
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Number of non-Gaussian vectors
Figure 4: Recognition results for the palm as a function of the number
of vectors.
ducing constraints on the hand (using pegs especially at the
thumb) will definitely increase the system performance. The
use of a multimodal approach has improved the recognition
rate.
The IPCA-ICA method based on incremental update of
the non-Gaussian independent vectors has been introduced.
The method concentrates on a challenging issue of computing
dominating non-Gaussian vectors from an incrementally
arriving high-dimensional data stream without computing
the corresponding covariance matrix and without knowing
the data in advance.
It is very efficient inmemory usage (only one input image
is needed at every step) and it is very efficient in the calculation
of the first basis vectors (unwanted vectors do not need
to be calculated). In addition to these advantages, this algorithm
gives an acceptable recognition success rate in comparison
with the PCA and the LDA algorithms.
In Table 1, it is clear that IPCA-ICA achieves higher average
success rate than the LDA, the PCA, and the FastICA
methods.