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Calibration and correction in a fingerprint scanner 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-009/40
  • G06K-009/00
출원번호 US-0425947 (1999-10-25)
발명자 / 주소
  • Irving, Richard D.
  • Scott, Walter Guy
출원인 / 주소
  • Cross Match Technologies, Inc.
대리인 / 주소
    Sterne, Kessler, Goldstein & Fox P.L.L.C.
인용정보 피인용 횟수 : 22  인용 특허 : 66

초록 ▼

A calibration and correction procedure for a fingerprint scanner. The calibration and correction procedure performs an automatic calibration procedure and gray level linearity procedure. The automatic calibration procedure includes a brightness function to correct for distortions in brightness, a fo

대표청구항 ▼

A calibration and correction procedure for a fingerprint scanner. The calibration and correction procedure performs an automatic calibration procedure and gray level linearity procedure. The automatic calibration procedure includes a brightness function to correct for distortions in brightness, a fo

이 특허에 인용된 특허 (66)

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이 특허를 인용한 특허 (22)

  1. Waldman, David A.; Fedele, Vincent; Ingwall, Richard T.; Raguin, Daniel H.; Berg, John S.; Joseph, Joby; Kent, David L., Acquisition of high resolution biometric images.
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  2. Harper, Jack, Artificial intelligence methods for difficult forensic fingerprint collection.
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  3. Gardiner, Michael; Canzi, Adriano, Biometric device utilizing finger sequence for authentication.
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  4. Ide,Hiroyasu, Fingerprint image reading apparatus.
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  5. Smith, David C., Fingerprint scanner auto-capture system and method.
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  6. Smith,David C., Fingerprint scanner auto-capture system and method.
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  7. McClurg, George William; Brunell, David; Scott, Walter Guy, Hand-held fingerprint scanner with on-board image normalization data storage.
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  8. Chiu,Chui Kuei, High-speed calibration method and system for an image-capture apparatus.
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  9. Kuo, Shih-Zheng, Image compensation method with correctional gray level values of complete black and/or white.
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  10. Toriyama, Hideyuki, Image reading method including shading correction and image reading device therefor.
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  11. Fedele, Vincent; Berg, John S.; Butler, Christopher J.; Farraher, Robert David, Method and apparatus for processing biometric images.
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  12. Martinez,Chris J; Scott,Walter Guy, Method and apparatus for rolled fingerprint capture.
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  13. Bisset, Douglas; Wilsher, Michael J., Multipass image scans for increased measurement resolution during calibration routines.
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  14. McClurg,George W.; Carver,John F.; Ebright,Frank L., Non-planar prism.
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  15. Scott, Walter G.; Van Dusen, John; Irving, Richard D., Palm scanner using a programmable nutating mirror for increased resolution.
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  16. Gardiner, Michael; Canzi, Adriano, Smart card system comprising a card and a carrier.
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  17. Gardiner, Michael; Canzi, Adriano, Smart card systems and methods utilizing multiple ATR messages.
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  18. Gardiner, Michael; Canzi, Adriano, Smart card systems comprising a card and a carrier.
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  19. Orandi, Shahram; Byers, Fred; Harvey, Stephen; Garris, Michael D.; Wood, Stephen S.; Libert, John M.; Wu, Jin Chu, Standard calibration target for contactless fingerprint scanners.
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  20. Orandi, Shahram; Byers, Fred; Harvey, Stephen; Garris, Michael D.; Wood, Stephen S.; Libert, John M.; Wu, Jin Chu, Standard calibration target for contactless fingerprint scanners.
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  21. Gardiner, Michael; Canzi, Adriano, System and method for selectively initiating biometric authentication for enhanced security of access control transactions.
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  22. McClurg,George W; Carver,John F; Ebright,Frank L, System for obtaining print and other hand characteristic information using a non-planar prism.
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