کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
467286 697932 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Robust measurement of ocular torsion using iterative Lucas–Kanade
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر علوم کامپیوتر (عمومی)
پیش نمایش صفحه اول مقاله
Robust measurement of ocular torsion using iterative Lucas–Kanade
چکیده انگلیسی

We present a new method to measure ocular torsion using Lucas–Kanade method. After pixels of iris annulus around a pupil have been converted into Cartesian coordinates, 30 features on the iris was selected then the features were tracked using the iterative Lucas–Kanade algorithm to calculate torsional shift. The results show that a precision of the method is higher than those measured by a conventional cross-correlation and by a template matching method. The suggested method showed 0.03° mean error with 0.15° maximum error. Particularly, the method was robust to change of pupil size and misalignment of pupil location. Processing time was also fast enough to be implemented in a real-time system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods and Programs in Biomedicine - Volume 85, Issue 3, March 2007, Pages 238–246
نویسندگان
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