An Adaptive Fingerprint-Sensing Scheme for a User Authentication System with a Fingerprint Sensor LSI

• MORIMURA Hiroki

  NTT Microsystem Integration Laboratories

• SHIGEMATSU Satoshi

  NTT Microsystem Integration Laboratories

• SHIMAMURA Toshishige

  NTT Microsystem Integration Laboratories

• FUJII Koji

  NTT Microsystem Integration Laboratories

• YAMAGUCHI Chikara

  NTT Microsystem Integration Laboratories

• SUTO Hiroki

  NTT Microsystem Integration Laboratories

• OKAZAKI Yukio

  NTT Microsystem Integration Laboratories

• MACHIDA Katsuyuki

  NTT Microsystem Integration Laboratories

• KYURAGI Hakaru

  NTT Microsystem Integration Laboratories

抄録

This paper describes an adaptive fingerprint-sensing scheme for a user authentication system with a fingerprint sensor LSI to obtain high-quality fingerprint images suitable for identification. The scheme is based on novel evaluation indexes of fingerprint-image quality and adjustable analog-to-digital (A/D) conversion. The scheme adjusts dynamically an A/D conversion range of the fingerprint sensor LSI while evaluating the image quality during real-time fingerprint-sensing operation. The evaluation indexes pertain to the contrast and the ridgelines of a fingerprint image. The A/D conversion range is adjusted by changing quantization resolution and offset. We developed a fingerprint sensor LSI and a user authentication system to evaluate the adaptive fingerprint-sensing scheme. The scheme obtained a fingerprint image suitable for identification and the system achieved an accurate identification rate with 0.36% of the false rejection rate (FRR) at 0.075% of the false acceptance rate (FAR). This confirms that the scheme is very effective in achieving accurate identification.

収録刊行物

• IEICE transactions on electronics

  IEICE transactions on electronics 87 (5), 791-800, 2004-05-01

  一般社団法人電子情報通信学会

キーワード

• fingerprint sensor
• adaptive fingerprint-sensing
• adjustable A
• D conversion
• fingerprint image quality evaluation

詳細情報

• CRID: 1571135652465142272
• NII論文ID: 110003214924
• NII書誌ID: AA10826283
• ISSN: 09168524
• 本文言語コード: en
• データソース種別:
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