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US 2010/0246903 A1Published application
Method of identifying a person by his iris
AssigneeSagern Securite
InventorMartin Cottard
Life of this patent
Estimating the term…
Abstract
A method of identifying a person by his iris through determining an interior limit and using a predefined exterior limit to form an analysis zone. A code associated with the analysis zone is generated and compared with a previously generated reference code. If there is no match another predefined exterior limit is used. The process repeats as long as predefined exterior limits exist or until a positive match is made.
Claims8
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) the interior limit (304) of the iris (252) from the said image;
- (c) placing (106) a predefined exterior limit (306) on said image;
- (d) analyzing (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 associate with the said analysis;
- (f) comparing (112) the current code with a previously generated reference code;
- (g) measuring (114) the resemblance between the current code and the reference code form 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.
7 more elements
A device (150) for identifying a person by his iris (252), the identification device (150) comprising:
- (a) a means (202) of capturing an image of an eye (25) to be identified;
- (b) a means (204) of determining an interior limit (304) of the iris (252) from the said image;
- (c) a means (206) of placing a predefined exterior limit (306) on said image;
- (d) a means of analysis (208) which, for the exterior limit (306), is designed to analyze the area (308) of the image lying between the interior limit (304) and the said exterior limit (306);
- (e) a means (210) of generating a current code associated with the said analysis;
- (f) a means (212) of comparing the current code with a previously generated reference code stored in a database (218);
- (h) a means (214) of measuring the resemblance between the current code and the reference code from the comparison, and;
- (i) a means of making a decision (216) concerning the identity of the person from the result of the measurement;
- and
- (j) a means of looping back that is designed to choose another predefined exterior limit (306), as long as there exist different predefined exterior limits (306) or as long as the decision-taking means (116) has not delivered a positive decision.
7 more elements
Dependencies are inferred from the claim text.