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The basic concepts and methods on performance and effectiveness evaluations at the feature-level fusion model of multi-biometric encryption are concentrated on in this paper. From the cryptographic theory point of view, firstly, the formal definitions related to multi-biometric cryptosystems are formulated. Under some extreme conditions, the security and privacy of multi-biometric cryptosystems at...
Iris, as a biometric with the best performance in the stability, reliability and non-invasiveness, can obtain an even more high recognition rate than other biometrics, such as fingerprint, face and voice. However, it is difficult to extract iris features from an eye image. In this paper, we demonstrate a scheme for iris detection and extraction based on John Daugman's Integro-differential operator...
2D-Gabor transforms are considered as an effective spatial-frequency analysis technique in diverse area of image processing, especially in texture feature detection field due to it owns good localization ability in both spatial and frequency domain and also has excellent directional selectivity. In this paper, a method of feature extraction of palm print using real-Gabor transform (RGT) is proposed,...
Map digitization is an important source of spatial data, and its process of production is complicated, the error generated by each step will influence the outcome of data quality. First, from perspective datasource, hardware, software and personnel factors related to map digitizing, the paper discussed the uncertainty; After that, an uniform spatial data quality model is built. Then starting from...
Metadata is an important document of image about outcome, which reflects history and status of the results. One of the factors affecting the quality of image data is quality of metadata, and quality of metadata is a decisive factor whether the user adopts dataset. Therefore, quality of metadata must be controlled; and metadata will introduce a random uncertainty in the process of entrying, editing,...
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