Iris recognition method and apparatus thereof
First Claim
1. An iris recognition method comprising:
- obtaining binary image data by receiving eye image data and filtering the received eye image data using a predetermined threshold value;
searching candidate center search regions for finding a pupil center using profile information of rows and columns of the binarized image;
detecting a pupil boundary and a center point by performing a mask operation using 8 pupil boundary mask templates for each of concentric circles formed of pointes in the searched candidate center search regions as candidate pupil centers and different radiuses; and
detecting an iris boundary region by performing a masking operation using 6 iris boundary mask templates corresponding to 6 locations for concentric circles formed of the pupil center as an origin and different radiuses.
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Abstract
An iris recognition method is provided. In the iris recognition method, binary image data is obtained by receiving eye image data and filtering the received eye image data using a predetermined threshold value. Then, candidate center search regions are searched for finding a pupil center using profile information of rows and columns of the binarized image. a pupil boundary and a center point are detected by performing a mask operation using 8 pupil boundary mask templates for each of concentric circles formed of pointes in the searched candidate center search regions as candidate pupil centers and different radiuses. An iris boundary region is detected by performing a masking operation using 6 iris boundary mask templates corresponding to 6 locations for concentric circles formed of the pupil center as an origin and different radiuses.
36 Citations
13 Claims
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1. An iris recognition method comprising:
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obtaining binary image data by receiving eye image data and filtering the received eye image data using a predetermined threshold value; searching candidate center search regions for finding a pupil center using profile information of rows and columns of the binarized image; detecting a pupil boundary and a center point by performing a mask operation using 8 pupil boundary mask templates for each of concentric circles formed of pointes in the searched candidate center search regions as candidate pupil centers and different radiuses; and detecting an iris boundary region by performing a masking operation using 6 iris boundary mask templates corresponding to 6 locations for concentric circles formed of the pupil center as an origin and different radiuses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An iris recognition apparatus comprising:
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an image input unit for receiving eye image data obtained by photographing eyes using an external optical device; a binarization unit for binarizing the input image data through filtering; a pupil boundary search unit including a template matching module for comparing pupil boundary mask templates corresponding to 8 locations of a pupil boundary region with the iris image data for detecting a pupil boundary and a center point using histogram information from the binarized images; and an iris boundary search unit including a template matching module for searching an iris boundary using iris boundary mask templates corresponding to six locations in a registered iris boundary region. - View Dependent Claims (13)
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Specification