Patent ID: 7120298

Claim:
A method for establishing and evaluating a data bank with images of the irises of M test subjects, with the following method steps: (a) Obtaining an image of the iris (iris chart) of the M test subjects by opto-electronically scanning-in the pixels with defined color values in a predetermined grid; (b) Conversion and storage of the M scanned-in iris charts in M data sets, each with a×b data fields of a value corresponding to the color value of the associated pixel; (c) Standardization of the M data sets in such a way that a standard value, which can be predetermined by a rule for computing, is formed for each data field and represents the normal color value of the associated pixel; (d) Forming a standard data set (DQ) from the mean values standardization in this way, which constitutes an iris chart with the statistical normal state of the iris of the M test subjects; (e) Storing the standard data set (DQ) in a first section of a data carrier.