WO2017012186A1 - Procédé et système de déverrouillage d'empreintes digitales - Google Patents

Procédé et système de déverrouillage d'empreintes digitales Download PDF

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Publication number
WO2017012186A1
WO2017012186A1 PCT/CN2015/089500 CN2015089500W WO2017012186A1 WO 2017012186 A1 WO2017012186 A1 WO 2017012186A1 CN 2015089500 W CN2015089500 W CN 2015089500W WO 2017012186 A1 WO2017012186 A1 WO 2017012186A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint
unlocking
finger
pixel
combined
Prior art date
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PCT/CN2015/089500
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English (en)
Chinese (zh)
Inventor
贾会欣
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上海斐讯数据通信技术有限公司
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Publication of WO2017012186A1 publication Critical patent/WO2017012186A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints

Definitions

  • the present invention relates to the field of fingerprint unlocking, and more particularly to a method and system for unlocking a fingerprint.
  • the encryption and unlocking methods of mobile terminals mainly include password unlocking, gesture unlocking and fingerprint unlocking:
  • Password unlocking is the most common unlocking method. The user presets an unlocking password and performs password input verification every time it is unlocked. However, because there are too many passwords to be remembered in life, such as multiple bank card passwords, email passwords, chat software passwords, etc., it is easy to remember that the situation cannot be unlocked.
  • Gesture unlocking has developed a variety of forms, and the unlocking methods derived from it are unlocked by a puzzle, unlocked by tapping, and the like.
  • the gesture lock on the Android model usually takes the form of a 640*960 square matrix, and the user unlocks by sliding the finger to the previously set "contact". Compared to entering a password, it can be unlocked in one go, faster. Of course, if the lock pattern is too complicated, there may be cases where the user forgets to unlock the gesture and cannot unlock.
  • the fingerprint unlocking operation is relatively simple.
  • the existing fingerprint unlocking is usually to verify the fingerprint information of a finger, mainly including the shape and the number of lines, in addition to the overall characteristics of the pattern area, the core point, the triangle point, and the direction, curvature, Local features such as location.
  • the existing fingerprint unlocking is usually to verify the fingerprint information of a finger, mainly including the shape and the number of lines, in addition to the overall characteristics of the pattern area, the core point, the triangle point, and the direction, curvature, Local features such as location.
  • a single finger fingerprint is dubbed and then stolen, and there is still a certain risk of being stolen.
  • the present invention proposes a more secure method and system based on fingerprint unlocking.
  • the object of the present invention is to provide a method and system for unlocking a fingerprint, which is not only convenient to operate but also has better security performance.
  • a method for unlocking a fingerprint comprising:
  • Step 1 Detect the unlock request
  • Step 2 Obtain a combined fingerprint of multiple fingers
  • Step 3 The acquired combined fingerprint is compared with the pre-stored fingerprint template, and is unlocked when the verification is successful, and returns to step 2 when the verification fails;
  • the fingerprint template is combined fingerprint information of a plurality of fingers.
  • the combined fingerprint comprises a combination of a plurality of finger fingerprint profiles
  • the fingerprint template includes a combination of a plurality of finger fingerprint profiles.
  • the fingerprint contour is fingerprint pixel dot matrix information.
  • the combination of the plurality of finger fingerprint profiles includes fingerprint pixel dot matrix information of each finger, and relative position information between different finger fingerprint pixel dot matrix center points;
  • step 2 After obtaining the combination of the plurality of finger fingerprint pixel lattice information in step 2, determining the center point of each finger fingerprint pixel lattice, and calculating the relative position information between the center points of the different finger fingerprint pixel lattices, and the relative position information is obtained.
  • the fingerprint pixel dot matrix information of each finger is compared with the relative position information between the center points of different finger fingerprint pixel lattices in the fingerprint template and the fingerprint pixel dot matrix information of each finger.
  • the fingerprint template is combined fingerprint information of multiple fingers under a preset gesture
  • the step 2 is to acquire a combined fingerprint of multiple fingers under the preset gesture.
  • the unlocking request in the step 1 is triggered by voice control or pressing a physical button.
  • the invention also provides a fingerprint unlocking system, which uses the method of fingerprint unlocking as described above, the system comprising:
  • a detection module for detecting an unlock request
  • a fingerprint collection module configured to acquire a combined fingerprint of multiple fingers
  • a storage module configured to pre-store a fingerprint template entered by a user
  • a verification module configured to perform the acquired combined fingerprint with the pre-stored fingerprint template Align the verification and issue an unlock command after the verification is successful;
  • An unlocking module for receiving the unlocking command and making an unlocking action.
  • the fingerprint collection module is configured to collect fingerprint contour combinations of multiple fingers
  • the fingerprint template used by the storage module is a fingerprint profile combination of multiple fingers.
  • the fingerprint contour is pixel dot matrix information of the fingerprint
  • the fingerprint collection module is a touch screen, and the touch screen is used to collect a combination of pixel dot matrix information of a plurality of finger fingerprints.
  • the storage module is configured to store a pixel template including pixel dot matrix information of each finger fingerprint in the fingerprint combination and relative position information of different finger fingerprint pixel dot center points;
  • the verification module includes a calculation unit and a comparison unit
  • the calculating unit is configured to determine a pixel dot center point of each finger fingerprint in the acquired combined fingerprint, and calculate relative position information of a pixel dot center point of different finger fingerprints;
  • the aligning unit is configured to perform pixel dot matrix information of each of the acquired combined fingerprints and the relative position information calculated by the calculating unit, together with the fingerprint template in the storage module. Comparison.
  • the invention collects the contour of a single finger fingerprint and the combination of multiple finger fingerprint contours, which is not the fingerprint pattern and the pattern shape of the prior art, and the security performance is higher because it is difficult to print the fingerprint contour that meets the verification requirements. . Further, since the fingerprint contour combination of the plurality of fingers also increases the relative position information between the different fingers, the security is further improved.
  • the fingerprint profile can be represented by fingerprint pixel dot matrix information, and the relative position information of different fingers is also represented by the relative coordinates of the midpoints of different finger fingerprint pixel lattices, which is easier to quantify and calculate by scientific indicators.
  • the fingerprint template of the present invention and the combined fingerprint collected during verification are preferably combined fingerprints under specific gestures, which can make the combination of fingerprints more certain, especially for the relative positions of different fingers, which is easier to determine.
  • FIG. 1 is a basic flow chart of a method for unlocking a fingerprint of the present invention
  • FIG. 3 is a schematic structural diagram of a fingerprint unlocking system of the present invention.
  • FIG. 4 is another schematic structural diagram of a fingerprint unlocking system of the present invention.
  • FIG. 5 is a schematic diagram of an embodiment of a fingerprint collection module of the present invention.
  • FIG. 6 is a gesture made when acquiring a combined fingerprint according to an embodiment of the present invention.
  • FIG. 7 is a combined fingerprint effect diagram obtained by the fingerprint collection module of FIG. 5 acquiring the gesture of FIG. 6;
  • FIG. 8 is a pixel dot matrix information diagram of the combined fingerprint effect of FIG. 7;
  • FIG. 10 is a combined fingerprint effect diagram obtained by the fingerprint collection module of FIG. 5 acquiring the gesture of FIG. 9;
  • FIG. 11 is a pixel dot matrix information diagram of the combined fingerprint effect of FIG.
  • the present invention provides a method for unlocking a fingerprint.
  • the first embodiment of the method includes the following basic processes:
  • Step 101 Detect an unlock request
  • Step 102 Acquire a combined fingerprint of multiple fingers
  • Step 103 Verify that the acquired combined fingerprint is consistent with the pre-stored fingerprint template, when the verification is consistent, step 104 is performed, and when the verification is inconsistent, step 105 is performed;
  • Step 104 unlocking
  • Step 105 Return to step 102.
  • the unlock request may be triggered by voice control or pressing a physical button, such as a request to "unlock” the voice, or an unlock request via a push button switch.
  • the module that detects the unlock request can be implemented by a voice recognizer or a push button switch.
  • the acquired combined fingerprint and the pre-stored fingerprint template may be a combination of a plurality of finger fingerprint profiles, that is, the fingerprint information includes a contour of each finger and a combination of each finger contour. Since the fingerprint outline is different from the pattern, it is determined by the shape of the finger and the strength of pressing the finger. The shape of the finger varies from person to person, and the strength of pressing the finger is also a suitable force for each person. Don't be too light or too heavy.
  • step 103 it is necessary to verify whether the fingerprint profile of each finger is consistent with the fingerprint template, and whether the relative positional relationship of the fingerprint profiles of the plurality of fingers is consistent with the fingerprint template.
  • the present invention collects the contour of a single finger fingerprint and the combination of multiple finger fingerprint profiles, which is not the fingerprint pattern and the pattern of the prior art, and is difficult to print the fingerprint that meets the verification requirements. Contours and thus higher safety. Further, since the fingerprint contour combination of the plurality of fingers also increases the relative position information between the different fingers, the security is further improved.
  • Embodiment 2 of the foregoing method includes the following processes:
  • Step 201 Detect an unlock request.
  • Step 202 Acquire fingerprint pixel dot matrix information of each finger in the combined fingerprint.
  • Step 203 Determine a pixel dot center point of each finger fingerprint, and calculate a relative position between different finger fingerprint pixel dot center points;
  • Step 204 Verify that the information in step 202, step 203 is consistent with the pre-stored fingerprint template, when the verification is consistent, step 205 is performed, and when the verification is inconsistent, step 206 is performed;
  • Step 205 unlocking
  • Step 206 Return to step 202.
  • step 202 the fingerprint contour is characterized by fingerprint pixel lattice information, which is more scientific and comparative.
  • step 203 determining the pixel dot center point of each finger fingerprint for the fingerprint collected in step 202 can be implemented by a computing module that writes a software function. After determining the pixel dot center point of each finger, the relative coordinates between the pixel center points of each pixel are calculated.
  • step 204 it is required to verify whether the fingerprint pixel dot matrix information of each finger is consistent with the fingerprint template, and whether the relative positional relationship of the fingerprint pixel dot matrix center points of the plurality of fingers is consistent with the fingerprint template.
  • the pre-stored fingerprint template can be realized by acquiring the structure of the combined fingerprint, and the combined fingerprint (contour) needs to be recorded in advance and stored, and multiple sets of combined fingerprints can be simultaneously recorded for storage.
  • the pre-recorded fingerprint template and the combined fingerprint obtained during verification may be a combination of fingers under a preset gesture, such as the gestures in FIG. 6 and FIG. 9, to facilitate determination between different fingers. relative position.
  • the present invention also provides a system for applying the foregoing fingerprint unlocking method.
  • the system includes:
  • a fingerprint collection module 2 configured to acquire a combined fingerprint of multiple fingers
  • a storage module 3 configured to pre-store a fingerprint template entered by a user
  • a verification module 4 configured to perform comparison verification on the acquired combined fingerprint and the fingerprint template stored in advance, and issue an unlocking instruction after the verification succeeds;
  • the unlocking module 5 is configured to receive the unlocking instruction and make an unlocking action.
  • the unlocking request can be triggered by a voice trigger or a push-type physical button. Therefore, the detecting module 1 can be implemented by a voice recognizer or a push button switch.
  • the fingerprint collection module 2 can be implemented by a push-type fingerprint collector or by a touch screen. Compared with the existing fingerprint collection button that only collects a single finger fingerprint, the fingerprint collection module of the invention has a larger area and is suitable for collecting combined fingerprints.
  • the storage module 3 can be implemented by a hardware memory implementation or a database.
  • Both the verification module 4 and the unlocking module 5 can be implemented by a function module of the writing software.
  • the combined fingerprint is a fingerprint contour combination of a plurality of fingers. Therefore, the fingerprint collection module collects the fingerprint contour combination of the plurality of fingers, and the storage module stores the fingerprint contour combination of the plurality of fingers. More preferably, the fingerprint contour passes through the pixel dot matrix information of the fingerprint. Therefore, when the fingerprint template is pre-recorded and verified to acquire the fingerprint, the fingerprint collection module is implemented by using a touch screen that can collect fingerprint pixel lattice information, and participates in FIG. 5 .
  • the present invention also proposes the following improvements.
  • the verification module 4 is refined, and the calculation unit 4a and the comparison unit 4b are provided.
  • a fingerprint combination is recorded in advance through the touch screen, and the fingerprint combination includes pixel dot matrix information of each finger fingerprint and relative position information of different finger fingerprint pixel dot center points, and the fingerprint combination is stored as a fingerprint template in the storage module 3 in.
  • the detecting module 1 detects the unlocking request
  • the fingerprint combination is further acquired through the touch screen, and the fingerprint combination includes pixel dot matrix information of each finger fingerprint in the combination.
  • the pixel unit center point of each finger fingerprint in the acquired combined fingerprint is determined by the calculating unit 4a, and relative position information (relative coordinates) of the pixel dot center point of the different finger fingerprints is calculated.
  • the pixel dot matrix information of each finger fingerprint acquired by the touch screen and the relative position information calculated by the calculating unit 4a are compared with the fingerprint template stored in the storage module 3 by the comparison unit 4b, and the pixel point of each finger fingerprint is compared. If the array information is consistent, and the relative position information of the pixel dot center points of different finger fingerprints is also consistent, the verification can be successful, and an unlock command is generated.
  • the present invention also proposes two specific application embodiments for detailed description. Both embodiments may use a touch screen as shown in FIG. 5.
  • the user may combine a pixel array of fingerprint combinations according to a specific finger combination of the user or according to a specific hand shape (gesture).
  • the fingerprint template is pre-recorded, it is necessary to record the fingerprint pixel dot of each pressed finger and the relative coordinates of each finger in the screen, thereby saving as a fingerprint template.
  • the coordinates record the relative coordinates of the center point of each finger pixel array.
  • FIG. 6 shows a common "scissor hand" gesture, which is matched by the combination of the index finger and the middle finger.
  • the fingerprint combination is collected by the touch screen of FIG. 5, and the effect image of the fingerprint pressing shown in FIG. 7 is obtained, and the pixel dot matrix information of the fingerprint as shown in FIG. 8 is recorded.
  • the dot circled on the pixel lattice of each fingerprint in FIG. 8 is the pixel dot center point of each finger, and the relative coordinates of the two center points are recorded.
  • Will The information in Figure 8 is stored as a fingerprint template.
  • the same "scissor hand" gesture needs to be made and the gesture is used to verify whether the input fingerprint combination information is consistent with the information shown in FIG. 8 on the touch screen shown in FIG. 5, including the pixels of the index finger and the middle finger fingerprint.
  • the dot matrix information, and the relative coordinates between the center point of the index finger pixel lattice and the center point of the middle finger pixel lattice are all matched with the information in Fig. 8. If they match, the unlocking is performed; if it does not match, the verification is performed again.
  • FIG. 9 shows a common "OK" gesture, which is matched by a middle finger, a ring finger, and a little finger combination.
  • the fingerprint combination is collected by the touch screen of FIG. 5, and the effect image of the fingerprint pressing shown in FIG. 10 is obtained, and the pixel dot matrix information of the fingerprint as shown in FIG. 11 is recorded. Characterize the fingerprint outline. Wherein, the dot circled on the pixel lattice of each fingerprint in FIG. 11 is the pixel dot center point of each finger, and the relative coordinates between the center points are recorded.
  • the information in Fig. 11 is stored as a fingerprint template.
  • the same "OK" gesture is required to verify whether the input fingerprint combination information is consistent with the information shown in FIG. 11 on the touch screen shown in FIG. 5, including the middle finger, the ring finger, and the little finger fingerprint.
  • Pixel dot matrix information, and the relative coordinates between the center point of the middle finger pixel lattice, the center point of the ring finger pixel lattice, and the center point of the little finger pixel lattice are all matched with the information in FIG. 11 , if matched, unlocked; If it does not match, you will need to verify again.
  • the invention is based on the user-specific finger combination, and simultaneously inputs the relative positions of the finger pixels of the user's multiple fingerprints into the system for matching, and the accuracy is extremely high.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
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  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention concerne un procédé et un système de déverrouillage d'empreintes digitales. Le procédé consiste à : détecter une demande de déverrouillage (101) ; acquérir une empreinte digitale combinée d'une pluralité de doigts (102) ; vérifier si l'empreinte digitale combinée acquise est cohérente avec un modèle d'empreinte digitale pré-enregistré (103) ; si c'est le cas, déverrouiller (104) ; et si ce n'est pas le cas, acquérir à nouveau une empreinte digitale combinée (105). Le système comprend : un module de détection (1) permettant de détecter une demande de déverrouillage ; un module d'acquisition d'empreintes digitales (2) permettant d'acquérir l'empreinte digitale combinée de la pluralité de doigts ; un module de stockage (3) permettant de pré-enregistrer un modèle d'empreinte digitale enregistré par un utilisateur ; un module de vérification (4) permettant de mettre en œuvre une comparaison et une vérification sur l'empreinte digitale combinée acquise et le modèle d'empreinte digitale pré-enregistré, et émettre une commande de déverrouillage après que la vérification a réussi ; et un module de déverrouillage (5) permettant de recevoir la commande de déverrouillage et d'exécuter une action de déverrouillage. Le schéma permet d'améliorer la sécurité d'un dispositif intelligent.
PCT/CN2015/089500 2015-07-21 2015-09-14 Procédé et système de déverrouillage d'empreintes digitales WO2017012186A1 (fr)

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