Jiangang Cheng

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An algorithm for the segmentation of fingerprints and a criterion for evaluating the block feature are presented. The segmentation uses three block features: the block clusters degree, the blockmean information, and the block variance. An optimal linear classifier has been trained for the classification per block and the criteria of minimal number of(More)
Fingerprint enhancement is a critical step in a fingerprint identification system. Recently, some anisotropic nonlinear diffusion filter is applied to the fingerprint preprocessed. Impressive results are main reason for using nonlinear diffusion filtering in image processing. Poor efficiency, especially the computational load, is the main reason for not(More)
This paper discussed systematically the conception, attribute and model of service supply chain for solving the problems of current research situation. So they reviewed and redefined the conception of service supply chain, discussed the attributes of object, structure, dynamic and operation, proposed the mathematical model. At last, the authors describe an(More)
Fingerprint enhancement is a critical step in fingerprint identification. Most of the existing enhancement uses a set of contextual filters to enhance fingerprint. The main drawback of these methods is these contextual filters based on the local information of the fingerprint, such as ridge width, orientation, curvature et al. These information are(More)
An important step in automatic fingerprint identification system (AFIS) is fingerprint matching. The task of fingerprint matching is to verify whether two fingerprints are coming from same finger. In this paper we detail and discuss the fingerprint matching algorithm. A minutia matching algorithm is proposed which modified the algorithm presented by Jain et(More)
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