- Patent Title: Method and system for contactless 3D fingerprint image acquisition
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Application No.: US16098299Application Date: 2016-09-28
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Publication No.: US10885300B2Publication Date: 2021-01-05
- Inventor: Zhinong Li , Chongliang Zhong , Limu Yang
- Applicant: ZKTECO CO. LTD
- Applicant Address: CN Guangdong
- Assignee: ZKTECO CO. LTD
- Current Assignee: ZKTECO CO. LTD
- Current Assignee Address: CN Guangdong
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Priority: CN201610509094 20160629
- International Application: PCT/CN2016/100556 WO 20160928
- International Announcement: WO2018/000638 WO 20180104
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06K9/03 ; G06F3/16

Abstract:
Embodiments of the present invention disclose a non-contact 3D fingerprint capturing apparatus and method. The apparatus includes: a housing, a circuit board and a fingerprint reader that are disposed in the housing; the circuit board includes a first control module; the fingerprint reader includes a fingerprint capturing module and a positioning module; the positioning module casts light to a first position point on a finger object; the fingerprint capturing module receives light reflected from the first position point, converts an optical signal into an electrical signal, and sends the electrical signal to the first control module; the first control module judges, according to the electrical signal, whether the first position point is a standard point, the standard point being an aperture with a diameter less than a first threshold and an illumination intensity greater than a second threshold; if the first position point is a standard point, the fingerprint capturing module captures fingerprint images from multiple directions, and transmits the fingerprint images to the first control module; and the first control module creates a 3D fingerprint image according to the fingerprint images. The embodiments of the present invention further provide a non-contact 3D fingerprint capturing method.
Public/Granted literature
- US20190213378A1 Method and System for Contactless 3D Fingerprint Image Acquisition Public/Granted day:2019-07-11
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