Evaluation of JTC method robustness in security applications

Among possible 2D identification methods the JTC (Joint Transform Correlation) method is one of very well known. Because of the possible optical implementation it has been deeply studied as a massively parallel approach. This paper deals with some selected problems related to a practical application of JTC method. As published on previous Carnahan conferences we have to know a sensitivity (robustness) of the method to some realistic distortion mechanisms. Previously we have tested zooming, dilation etc. Here we demonstrate an influence of partial covering, a loss of some lines and a noise influence.