TW200719242A - Method of determining fingerprint of living body - Google Patents
Method of determining fingerprint of living bodyInfo
- 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
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.
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)
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 |
-
2005
- 2005-11-03 TW TW094138575A patent/TW200719242A/en not_active IP Right Cessation
Cited By (3)
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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Legal Events
Date | Code | Title | Description |
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MM4A | Annulment or lapse of patent due to non-payment of fees |