TW200719242A - Method of determining fingerprint of living body - Google Patents

Method of determining fingerprint of living body

Info

Publication number
TW200719242A
TW200719242A TW094138575A TW94138575A TW200719242A TW 200719242 A TW200719242 A TW 200719242A TW 094138575 A TW094138575 A TW 094138575A TW 94138575 A TW94138575 A TW 94138575A TW 200719242 A TW200719242 A TW 200719242A
Authority
TW
Taiwan
Prior art keywords
fingerprint
living body
image
determining
reading
Prior art date
Application number
TW094138575A
Other languages
Chinese (zh)
Other versions
TWI301246B (en
Inventor
Jer-Chuan Huang
Zhe-Ming Mai
Original Assignee
Wison Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wison Technology Corp filed Critical Wison Technology Corp
Priority to TW094138575A priority Critical patent/TW200719242A/en
Publication of TW200719242A publication Critical patent/TW200719242A/en
Application granted granted Critical
Publication of TWI301246B publication Critical patent/TWI301246B/zh

Links

Landscapes

  • Collating Specific Patterns (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

A method of determining fingerprint of a living body is disclosed, comprising the following steps: (1) calculating the image number (N) of the fingerprint to be sampled within a unit time (T) according to the scanning speed of a fingerprint; (2) setting the reading index(i) of a fingerprint image to 0 (that is starting reading from the first fingerprint image); (3) determining whether the reading index(i) of a fingerprint image is less than the image number (N) of the sampled fingerprint; (4) if no, determining the fingerprint to be a non-living body fingerprint; (5) if yes, reading the fingerprint image (IMGi); (6) determining the image of the line pattern of the fingerprint, the width of the line pattern ridge and the ridge core; (7) calculating the gray-scale variation value and the total average variation value (ΔGIMGi) of each pixel within the unit space (S) towards the two sides of each ridge core; (8) calculating all total average variation values (ΣΔGIMGi) and determining whether it is greater than ΔG (configured experimental value); (9) if yes, determining the fingerprint to be a living body fingerprint; and (10) if no, adding 1 to the reading index (i) of the fingerprint images (i=i+1), and repeating steps 3 to 8. By doing said steps, it is able to provide an accurate determination of a fingerprint for a living body or a fingerprint for a non-living body.
TW094138575A 2005-11-03 2005-11-03 Method of determining fingerprint of living body TW200719242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW094138575A TW200719242A (en) 2005-11-03 2005-11-03 Method of determining fingerprint of living body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094138575A TW200719242A (en) 2005-11-03 2005-11-03 Method of determining fingerprint of living body

Publications (2)

Publication Number Publication Date
TW200719242A true TW200719242A (en) 2007-05-16
TWI301246B TWI301246B (en) 2008-09-21

Family

ID=45070175

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094138575A TW200719242A (en) 2005-11-03 2005-11-03 Method of determining fingerprint of living body

Country Status (1)

Country Link
TW (1) TW200719242A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI473024B (en) * 2011-12-23 2015-02-11 Nat Inst Chung Shan Science & Technology Life fingerprint authenticity verification technology
TWI501163B (en) * 2013-08-15 2015-09-21 Gingy Technology Inc A method for recognizing the authentic fingerprint and device thereof are disclosed
TWI762053B (en) * 2020-06-05 2022-04-21 神盾股份有限公司 Under-screen fingerprint sensing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI473024B (en) * 2011-12-23 2015-02-11 Nat Inst Chung Shan Science & Technology Life fingerprint authenticity verification technology
TWI501163B (en) * 2013-08-15 2015-09-21 Gingy Technology Inc A method for recognizing the authentic fingerprint and device thereof are disclosed
TWI762053B (en) * 2020-06-05 2022-04-21 神盾股份有限公司 Under-screen fingerprint sensing device

Also Published As

Publication number Publication date
TWI301246B (en) 2008-09-21

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