WO2017132822A1 - Système de reconnaissance d'empreintes digitales pour dispositif électronique portatif - Google Patents

Système de reconnaissance d'empreintes digitales pour dispositif électronique portatif Download PDF

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Publication number
WO2017132822A1
WO2017132822A1 PCT/CN2016/073154 CN2016073154W WO2017132822A1 WO 2017132822 A1 WO2017132822 A1 WO 2017132822A1 CN 2016073154 W CN2016073154 W CN 2016073154W WO 2017132822 A1 WO2017132822 A1 WO 2017132822A1
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WO
WIPO (PCT)
Prior art keywords
finger
verification
module
feature
rate
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Application number
PCT/CN2016/073154
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English (en)
Chinese (zh)
Inventor
刘文桂
刘兆轩
刘友淳
Original Assignee
刘文桂
刘兆轩
刘友淳
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Publication date
Application filed by 刘文桂, 刘兆轩, 刘友淳 filed Critical 刘文桂
Priority to PCT/CN2016/073154 priority Critical patent/WO2017132822A1/fr
Publication of WO2017132822A1 publication Critical patent/WO2017132822A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1347—Preprocessing; Feature extraction

Definitions

  • the invention relates to a fingerprint identification system, and in particular to a fingerprint identification system for a portable electronic device.
  • this method only recognizes the fingerprint block of the finger portion, and the security is low.
  • this method instead of storing multiple sets of different fingerprints in the database, it will lead to more opportunities for different fingerprint samples to be used, and fake fingerprints can be used to log in, which increases the security of electronic products. Risks, there are shortcomings that need to be improved.
  • the main object of the present invention is to provide a fingerprint identification system for a portable electronic device.
  • fingerprint recognition can still be performed to solve the problem that the finger cannot be recognized after a long finger injury. And, a variety of combinations of modes are available for high security.
  • the present invention provides a fingerprint identification system for a portable electronic device, comprising a database, a detecting unit and a processing unit.
  • the database and the detecting unit are respectively electrically connected to the processing unit, and the database is pre-stored with a comparison data module, where the matching data module includes multiple fingerprint feature data of three default fingers and complex knuckle feature data, and the detecting unit
  • the processing unit receives the signal and converts it into a real-time data module, and the processing unit compares the real-time data module with the comparison data module Right and get a verification match rate.
  • the processing unit has a default matching rate by default. When the verification matching rate is greater than or equal to the preset matching rate, the processing unit determines that the three pending detecting portions are consistent with the three preset fingers.
  • FIG. 1 is a block diagram of a component relationship in accordance with a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an identification process according to a preferred embodiment of the present invention.
  • FIG. 3 is a first schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.
  • Figure 4 is a diagram showing the state of use of a preferred embodiment of the present invention.
  • FIG. 5 is a second schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.
  • FIG. 6 is a third schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.
  • FIG. 7 is a fourth schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.
  • FIG. 8 is a fifth schematic diagram of a finger to be inspected according to a preferred embodiment of the present invention.
  • processing unit 77: seventh feature module to be tested
  • 61 a first comparison feature module
  • 81 a fingerprint to be tested
  • 63 a third comparison feature module
  • 83 a finger knuckle to be examined
  • 64 fourth control feature module
  • 84 finger joint to be tested
  • 71 a first feature to be tested; c1: a first distance to be inspected;
  • 73 a third feature to be tested; c3: a third distance to be inspected.
  • a fingerprint identification system 1 of a portable electronic device 5 of the present invention includes a database 2, a detecting unit 3 and a processing unit 4.
  • the database 2 and the detecting unit 3 are electrically connected to the processing unit 4, respectively.
  • the database 2 is pre-stored with a comparison data module 6, and the comparison data module 6 includes complex fingerprint feature data of three default fingers (not shown).
  • the detecting unit 3 is configured to detect the plurality of pending fingerprints 81 and the plurality of pending knuckles 82 of the three pending finger portions 8 and transmit a signal to the processing unit 4, and the processing unit 4 receives The signal is then converted into a real-time data module 7, which compares the real-time data module 7 with the comparison data module 6 and obtains a verification match rate.
  • the processing unit 4 has a default matching rate by default.
  • the processing unit 4 determines that the three pending finger portions 8 match the three preset fingers.
  • the fingerprint identification system 1 can be used to perform operation locking on the portable electronic device 5, such as unlocking an operation screen, unlocking a case file, and the like, thereby providing more comprehensive protection of more important electronic data.
  • the operator's three test finger portions 8 sometimes cause problems in that the verification is inconvenient due to injury/dirt (for example, the fingerprint is damaged), and at the same time, there is a high verification safety reliability;
  • the preset coincidence rate range is preferably defined in the range of 70% to 90%. In this embodiment, the preset coincidence rate is set to 80%, and the identification convenience and the identification security can be simultaneously considered.
  • the three preset fingers are not limited to the operator's hands or feet, and are not limited to one hand/foot.
  • the three preset fingers may have a plurality of combined modes; preferably, the three The preset finger and the three pending finger portions 8 are the index finger, the middle finger and the ring finger of the same hand, so that the user can perform the identification operation with the portable electronic device 5 (refer to FIG. 4).
  • the comparison data module 6 includes a first comparison feature module 61 and a second comparison feature module 62.
  • the first comparison feature module 61 is defined as the complex fingerprint feature data of the three preset fingers.
  • the second comparison feature module 62 is defined as a complex finger knuckle of the three preset fingers.
  • the data is exemplified, but not limited to, the shape of the knuckles, the number of main lines of the knuckles, the distribution of the knuckles on the knuckles, the length of each knuckles, and the like.
  • the real-time data module 7 includes a first to-be-tested feature module 71 and a second to-be-tested feature module 72.
  • the first to-be-tested feature module 71 is a plurality of pending verifications.
  • the data of the fingerprint 81 is the data of the plurality of pending finger knuckles 83 of the three to-be-examined finger portions 8.
  • the processing unit 4 compares the first verification feature module 71 and the second verification feature module 72 with the first comparison feature module 61 and the second comparison feature module 62, respectively, and obtains a first verification conformance. Rate and a second verification match rate.
  • the processing unit 4 determines that the three pending finger portions 8 match the three preset finger portions when at least one of the first verification compliance rate and the second verification compliance rate is greater than or equal to the preset compliance rate.
  • the comparison data module 6 further includes a third comparison feature module 63.
  • the third comparison feature module 63 is the two-finger feature data of the three preset fingers when straightening and closing, the real-time data module 7
  • a third feature module 73 is included.
  • the third feature module 73 is data of two pending finger joints 84 of the three pending finger portions 8 when straightened together.
  • the processing unit 4 The third feature verification module 73 and the third comparison feature module 63 are compared, and a third verification compliance rate is obtained. And the processing unit 4 determines that the three verification fingers 8 are determined when the first verification compliance rate, the second verification compliance rate, and the third verification compliance rate are at least equal to or equal to the preset compliance rate. Corresponding to the three preset fingers, it is possible to perform the verification when the three test finger portions 8 are injured, and the identification safety can be not affected.
  • the comparison data module 6 further includes a fourth comparison feature module 64.
  • the fourth comparison feature module 64 is a complex finger-strip relative position feature data of the three preset fingers when being straightened together.
  • the second knuckle position of the index finger is approximately the same as the second knuckle position of the middle finger, or the first knuckle of the ring finger is located in the first half of the finger joint and the like.
  • the real-time data module 7 further includes a fourth to-be-tested feature module 74, which is a plurality of pending finger-knobs 83 of the three-to-be-tested finger portion 8 when straightened together.
  • the processing unit 4 compares the fourth verification feature module 74 and the fourth comparison feature module 64 with a relative position data, and obtains a fourth verification compliance rate.
  • the processing unit 4 determines the three pending tests when at least two of the first verification compliance rate, the second verification compliance rate, the third verification compliance rate, and the fourth verification compliance rate are greater than or equal to the preset compliance rate.
  • the finger 8 coincides with the three preset fingers.
  • the operator can decide the first verification conformity rate, the second verification conformity rate, and the first The verification verification rate and the fourth verification conformity rate need to reach the preset compliance rate (for example, 2, 3 or 4), and then adjust the rigor of the processing unit 4 to judge the standard. For example, if the operator prefers the security level protection, the first verification compliance rate, the second verification compliance rate, the third verification compliance rate, and the fourth verification compliance rate may both be greater than or equal to the When the preset matching rate is reached, the processing unit 4 determines that the three pending finger portions 8 are consistent with the three preset finger portions, so as to achieve more stringent identification.
  • the preset compliance rate for example, 2, 3 or 4
  • comparison data module 6 can be further extended or set with other default identification data, and is not limited to the above.
  • the three preset fingers and the three pending finger portions 8 respectively refer to the index finger, the middle finger and the ring finger of the same hand
  • the comparison data module 6 further includes a fifth comparison feature module 65.
  • the fingerprint outline of the middle finger and the fingerprint outline of the index finger will have a first tangent
  • the fingerprint outline of the middle finger and the fingerprint outline of the ring finger will have a second tangent
  • the first tangent and the second tangent intersect to form.
  • a preset angle (not shown)
  • the fifth comparison feature module 65 is the data of the default angle.
  • the real-time data module 7 further includes a fifth feature module 75.
  • a fifth feature module 75 Referring to FIG. 5, when the three-finger finger 8 is straight and close, the fingerprint contour of the middle finger and the fingerprint of the index finger have a first tangent, the middle finger The fingerprint contour and the fingerprint of the ring finger have a second tangent, and the first tangent and the second tangent intersect to form an inspected angle ⁇ , and the fifth inspected feature module 75 is the data of the inspected angle ⁇ .
  • the processing unit 4 compares the fifth verification feature module 75 and the fifth comparison feature module 65, and obtains a fifth verification coincidence rate. The processing unit 4 determines that the three pending finger portions 8 match the three preset fingers when the fifth verification compliance rate is greater than or equal to the preset compliance rate.
  • the comparison data module 6 further includes a sixth comparison feature module 66.
  • a predetermined baseline (not shown) is defined by the first knuckle of the middle finger.
  • the distance of the knuckle of the first knuckle of the index finger from the default baseline is a first preset distance
  • the distance of the knuckle position of the first knuckle of the ring finger is a second preset distance from the default baseline.
  • the sixth comparison feature module 66 is the first default distance and the second default distance data.
  • the real-time data module 7 further includes a sixth feature module 76.
  • a baseline of the first knuckle of the middle finger is defined.
  • the distance of the phalanx of the first phalanx of the index finger from the baseline 9 to be examined is a first waiting distance b1
  • the position of the knuckle of the first knuckle of the ring finger is a distance from the baseline 9 to be examined.
  • the second to-be-tested feature module 76 is the first to-be-tested distance b1 and the second to-be-tested distance b2 data.
  • the processing unit 4 The six test feature modules 76 and the sixth control feature module 66 are compared and a sixth verification match rate is obtained.
  • the processing unit 4 determines that the three pending finger portions 8 match the three preset fingers when the sixth verification compliance rate is greater than or equal to the preset coincidence rate.
  • the comparison data module 6 further includes a seventh comparison feature module 67.
  • the comparison data module 6 further includes a seventh comparison feature module 67.
  • the seventh comparison feature module 67 is the data of the default polygon.
  • the real-time data module 7 further includes a seventh feature module 77. Referring to FIG.
  • the first knuckle of the middle finger and the knuckle of the second knuckle may be The knuckle of the first knuckle of the index finger and the knuckle of the first knuckle of the ring finger, and the plurality of feature points to be inspected are taken to form a to-be-conformed polygon A, and the seventh feature element 77 is the polygon to be inspected A's data.
  • the processing unit 4 compares the seventh verification feature module 77 and the seventh comparison feature module 67, and obtains a seventh verification coincidence rate. When the seventh verification coincidence rate is greater than or equal to the preset coincidence rate, the processing unit 4 determines that the three pending verification finger portions 8 are consistent with the three preset finger portions.
  • the plurality of features to be tested in the present embodiment are the two ends of the phalanx of the first phalanx of the middle finger, the right end of the phalanx of the first phalanx of the index finger, and the knuckle of the first knuckle of the ring finger.
  • the comparison data module 6 further includes an eighth comparison feature module 68.
  • the distance between the knuckles of the first knuckle of the index finger and the fingertip of the index finger is defined.
  • the distance between the knuckles of the first knuckle of the middle finger and the fingertip of the middle finger is a second specified distance
  • the distance between the knuckles of the first knuckle of the ring finger to the fingertip of the ring finger is one.
  • the third specified feature module 68 is data of the first specified distance, the second specified distance, and the third specified distance.
  • the real-time data module further includes an eighth feature module 78.
  • the phalanx of the first knuckle of the index finger is defined to the index finger.
  • the distance between the fingertips is a first to-be-specified distance c1
  • the distance between the phalanx of the first phalanx of the middle finger and the fingertip of the middle finger is a second to-be-specified distance c2
  • the knuckle of the first knuckle of the ring finger The distance from the fingertip of the ring to the ring finger is a third to-be-specified distance c3
  • the eighth feature to be tested 78 is the first to-be-specified distance c1, the second to-be-specified distance c2, and the third to-be-specified distance.
  • the processing unit 4 The levy module 78 and the eighth comparison feature module 68 perform an alignment and obtain an eighth verification compliant rate; wherein, when the eighth verification compliant rate is greater than or equal to the preset compliant rate, the processing unit 4 determines the three The finger to be tested 8 coincides with the three preset fingers.
  • the fingerprint identification system of the portable electronic device of the present invention performs a plurality of identification portions on the finger portion, so that a plurality of modes are combined to identify the problem, and the problem that the fingerprint recognition cannot be smoothly performed when the operator's finger is injured can be solved.

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Collating Specific Patterns (AREA)

Abstract

L'invention concerne un système de reconnaissance (1) d'empreintes digitales destiné à un dispositif électronique portatif. Le système de reconnaissance (1) d'empreintes digitales comprend une base de données (2), une unité de détection (3) et une unité de traitement (4). La base de données (2) et l'unité de détection (3) sont électriquement connectées à l'unité de traitement (4), et la base de données (2) contient un module de données de comparaison (6) prémémorisé. Le module de données de comparaison (6) comprend de multiples éléments de données de caractéristiques d'empreintes digitales (61) et de multiples éléments de données de caractéristiques d'articulations de doigts (62) de trois parties de doigts prédéfinies. L'unité de détection (3) sert à effectuer une détection sur trois parties de doigts (8) à vérifier pour obtenir plusieurs empreintes digitales (81) à vérifier et plusieurs empreintes d'articulations (83) de doigts à vérifier, et à envoyer un signal à l'unité de traitement (4). L'unité de traitement (4) reçoit le signal, convertit celui-ci en un module de données courantes (7), et compare le module de données courantes (7) au module de données de comparaison (6) de façon à obtenir un taux de correspondance de vérification. L'unité de traitement (4) a un taux de correspondance prédéfini par défaut et, si le taux de correspondance de vérification est supérieur ou égal au taux de correspondance prédéfini, alors l'unité de traitement (4) détermine que les trois parties de doigts (8) correspondent aux trois parties de doigts prédéfinies. Le système (1) permet de résoudre le problème selon lequel la reconnaissance ne peut pas être effectuée après une blessure d'un doigt.
PCT/CN2016/073154 2016-02-02 2016-02-02 Système de reconnaissance d'empreintes digitales pour dispositif électronique portatif WO2017132822A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110502956A (zh) * 2018-05-17 2019-11-26 刘文桂 指节纹辨识系统

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