روش جدید سخت‌افزاری تخمین جهت در تصاویر اثر انگشت
محورهای موضوعی : مهندسی برق و کامپیوترایمان علی‌بیگی 1 , شادرخ سماوی 2 , زهرا رحمانی 3
1 - دانشگاه صنعتی اصفهان
2 - دانشگاه صنعتی اصفهان
3 - دانشگاه صنعتی اصفهان
کلید واژه: بيومتريک اثر انگشت تخمين جهت استخراج جزئيات سخت‌افزار,
چکیده مقاله :
يكي از روش‌هاي احراز هويت استفاده از اثر انگشت است. شناسايي اثر انگشت يکي از بهترين روش‌هاي بيومتريک براي تعيين هويت است. اکثر سيستمهاي اتوماتيک مقايسه اثر انگشت بر پايه تطبيق جزئيات مي‌باشند. استخراج جزئيات به‌صورت خودکار يکي از مراحل حساس در طراحي سيستمهاي تأييد اثر انگشت است. يکي از مراحل پيچيده براي ارتقاي كيفيت تصوير و استخراج جزئيات، محاسبه جهت خطوط برآمدگي اثر انگشت است. الگوريتم‌هاي موجود عمدتاً نياز به انجام محاسبات پيچيده و زمان‌بري دارند و به‌صورت نرم‌افزاري انجام مي‌شوند. به همين دليل پيادهسازي مستقيم آنها به‌صورت بلادرنگ بسيار دشوار است. در اين مقاله با بهبود و پيادهسازي الگوريتم‌هاي موجود، سخت‌افزاري براي محاسبه جهت در تصوير اثر انگشت مبتني بر معماري خط لوله ارائه شده است که از کارآيي بسیار خوبی برخوردار مي‌باشد.
One of the main identity authentication methods is the use of fingerprints. The most popular biometric method is fingerprint analysis. Most of the automatic fingerprint systems are based on minutiae matching. Therefore, extraction of minutiae is a critical stage in the design of fingerprint authentication systems. Computation of direction of lines in fingerprints is a stage which affects the quality of the extracted minutiae. The existing algorithms require complex and time-consuming computations and are software-based. This paper presents a hardware implementation which has improved the current methods. The presented method is based on pipeline architecture and has proved to perform efficiently.
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