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In this paper finger print image enhancement technique in various approaches using different types of filter is reviewed. Fingerprint image enhancement techniques are so varied, and use so many different image processing approaches, that it is difficult to assemble a meaningful body of techniques suitable for enhancement without extensive background development about it. During review some approaches found in spatial domain, frequency domain, neural network based approach and some fuzzy based approach. The state-of-art in the literature is reviewed to provide a foundation for the evaluation of the proposed approaches.
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