The increasing use of biometrics in different environments presents new challenges. Most importantly, biometric data are irreplaceable. Therefore, storing biometric templates, which is unique to individual user, entails significant security risks. In this paper, we propose a geometric transformation for securing the minutiae based fingerprint templates. The proposed scheme employs a robust one-...

Dependence on landmark points or high-order derivatives when establishing correspondences between geometrical image curves under various subclasses of projective transformation remains a shortcoming of present methods. In the proposed framework, geometric transformations are treated as smooth functions involving the parameters of the curves on which the transformation basis points lie. By allow...

In this paper, a robust image watermarking method in two-dimensional space/spatial-frequency distributions domain is proposed which is robust against geometric distortion. This watermarking is detected by a linear frequency change. The one-dimensional S transformation and radon transformation are used to detect the watermark. The chirp signals are used as watermarks and this type of signals is ...

We design a probabilistic trajectory synthesis algorithm for generating time-varying sequences of geometric configuration data. The algorithm takes a set of observed samples (each may come from a different trajectory) and simulates the dynamic evolution of the patterns in O(n logn) time. To synthesize geometric configurations with indistinct identities, we use the pair correlation function to s...

The purpose of a registration process is to find a geometric transformation, that relates corresponding voxels in two different 3D images of the same object. We present an algorithm based on maximization of mutual information and its medical applications.

On the basis of the principle that topological quantum phases arise from the scattering around space-time defects in higher dimensional uniication, a geometric model is presented that associates with each quantum phase an element of a transformation group.