Patent ID: 8391566

Claim:
A method ( 100 ) of identifying a person by his iris ( 252 ), the identification method ( 100 ) comprising the steps of: (a) capturing ( 102 ) an image of an eye ( 250 ) to be identified; (b) determining ( 104 ) an interior limit ( 304 ) of the iris ( 252 ) from the said image; (c) placing ( 106 ) a predefined exterior limit ( 306 ) on said image, the exterior limit being predefined at the time of recording of a reference code; (d) analysing ( 108 ), for said exterior limit ( 306 ), the area ( 308 ) of the image lying between the interior limit ( 304 ) and the said exterior limit ( 306 ); (e) generating ( 110 ) a current code associated with the said analysis; (f) comparing ( 112 ) the current code with the previously generated reference code; (g) measuring ( 114 ) the resemblance between the current code and the reference code from the comparison; (h) making a decision ( 116 ) concerning the identity of the person from the result of the measurement; and (i) looping back to the placing step ( 106 ), with another predefined exterior limit ( 306 ), as long as there exist different predefined exterior limits ( 306 ) or as long as the decision taking step ( 116 ) is not positive.