EXPEDIENT ENCODING SYSTEM
First Claim
Patent Images
1. An encoding method comprising:
- extracting significant features of an iris pattern;
encoding the features; and
compressing the encoded iris pattern to fewer bits but sufficient to make a match.
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Abstract
An encoding system for an iris recognition system. In particular, it presents a robust encoding method of the iris textures to compress the iris pixel information into few bits that constitute the iris barcode to be stored or matched against database templates of same form. The iris encoding system is relied on to extract key bits of information under various conditions of capture, such as illumination, obscuration or eye illuminations variations.
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Citations
20 Claims
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1. An encoding method comprising:
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extracting significant features of an iris pattern;
encoding the features; and
compressing the encoded iris pattern to fewer bits but sufficient to make a match. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for encoding comprising:
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extracting a feature vector from an iris image at each of several angles; and
dot product-ing each feature vector with a periodic filter. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for encoding comprising:
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extracting a feature vector from an iris pattern at each of several one-dimensional radial segments; and
filtering the feature vector. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification