CN104794448A - Fingerprint verification system - Google Patents
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- CN104794448A CN104794448A CN201510202428.9A CN201510202428A CN104794448A CN 104794448 A CN104794448 A CN 104794448A CN 201510202428 A CN201510202428 A CN 201510202428A CN 104794448 A CN104794448 A CN 104794448A
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Abstract
The invention relates to a fingerprint verification system. The fingerprint verification system comprises a fingerprint collecting device, a fingerprint feature extracting device, a storage unit for storing fingerprint templates, a fingerprint comparing device for comparing fingerprint features extracted by the fingerprint feature extracting device with the fingerprint templates stored in the storage unit, a control device for controlling the fingerprint comparing device and outputting fingerprint verification results, a power supply, and a comparison threshold adjusting device which is connected with the fingerprint comparing device and the control device and used for adjusting the fingerprint comparison thresholds. The fingerprint verification system has the advantages that the fingerprint comparison thresholds are adjusted through the comparison threshold adjusting device, limitation of the fixed comparison threshold in fingerprint verification is avoided, error recognition rate and false rejection rate are lowered effectively, and identity verification safety and identity recognition efficiency are increased.
Description
Present patent application is the divisional application being called the patented claim of " fingerprint verification system " based on the name in former number of patent application to be 201310027495.2 applyings date be on January 23rd, 2013.
Technical field
The present invention relates to field of biological recognition, particularly relate to a kind of fingerprint verification system.
Background technology
Existing fingerprint verification system, gathers fingerprint characteristic by fingerprint instrument and itself and fingerprint template is compared, if both similarities reach predetermined fixing threshold values, then finger print identification verification passes through, otherwise finger print identification verification does not pass through.In order to ensure reliability and the security of authentication, usually predetermined fixing threshold values all arranges higher.Owing to being subject to the factor impacts such as air themperature humidity, sensor ageing and dry wet finger, the fingerprint image quality collected by fingerprint instrument is often not good.If predetermined fixing threshold values arranges too high, fingerprint authentication failure and higher reject rate can be caused, affect fingerprint comparison efficiency; If predetermined fixing threshold values is on the low side, higher misclassification rate can be produced again, affect reliability and security.Therefore, reservation threshold be arranged on fingerprint authentication time particularly crucial.Existing fingerprint verification system comparison threshold values is set in advance as changeless numerical value, can not adjust automatically whole according to actual service condition, affect security and the work efficiency of authentication.
Summary of the invention
Technical matters solved by the invention is to provide a kind of fingerprint verification system, effectively reduces reject rate and misclassification rate, improves security and the verification efficiency of authentication system.
For solving the problems of the technologies described above, the present invention adopts following scheme:
A kind of fingerprint verification system, comprise fingerprint acquisition device, Finger print characteristic abstract device, for storing the storage unit of fingerprint template, for the fingerprint comparison device that the fingerprint characteristic extracted by described Finger print characteristic abstract device is compared with the fingerprint template being stored in described storage unit, for controlling control device and the power supply of described fingerprint comparison device and output fingerprint authentication result, it is characterized in that, also comprise the comparison threshold values adjusting gear be connected with described fingerprint comparison device and control device, for adjusting the comparison threshold values of fingerprint, described comparison threshold values adjusting gear comprises the time module connected successively, control module and threshold values arrange module, wherein said time module is used for the described system log (SYSLOG) time, described threshold values arranges module for arranging multiple threshold values Grad, described control module is used for threshold values described in the time automatic adaptation that records according to described time module and arranges the threshold values Grad of module installation.
Preferably, during described control module automatic adaptation, multiple threshold values Grad and each time period fix Corresponding matching.
Preferably, described fingerprint acquisition device comprises fingerprint sensor, and described fingerprint sensor is the one in sliding type semiconductor fingerprint sensor, CMOS fingerprint sensor and CCD fingerprint sensor.
Preferably, Finger print characteristic abstract device to be taken the fingerprint feature by fingerprint algorithm from fingerprint image.
Preferably, when described fingerprint comparison device is compared, if both similarities reach the threshold values of described comparison threshold values adjusting gear automatic adaptation, then fingerprint authentication passes through; Otherwise fingerprint authentication does not pass through.
The present invention also provides a kind of electronic equipment, and it comprises above-mentioned fingerprint verification system.
Fingerprint verification system provided by the invention is by the comparison threshold values of comparison threshold values adjusting gear adjustment fingerprint, avoid changeless comparison threshold values limitation in actual applications, effectively reduce misclassification rate and reject rate, improve the efficiency of identity verification secure and identification.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the fingerprint verification system of first embodiment of the invention;
Fig. 2 is the workflow diagram of the fingerprint verification system of first embodiment of the invention;
Fig. 3 is the structural drawing of the fingerprint verification system of second embodiment of the invention;
Fig. 4 is the structural drawing of the fingerprint verification system of third embodiment of the invention.
Embodiment
The invention provides a kind of fingerprint verification system, for making object of the present invention, technical scheme and effect clearly, clearly, referring to accompanying drawing examples, the present invention is described in more detail.
Fig. 1 is the structural drawing of the fingerprint verification system of first embodiment of the invention, and described fingerprint verification system comprises fingerprint acquisition device 20, Finger print characteristic abstract device 30, storage unit 40, fingerprint comparison device 50, control device 60, power supply 70 and comparison threshold values adjusting gear 80.
Described fingerprint acquisition device 20 is for gathering the fingerprint image of user, and it comprises fingerprint sensor, and described fingerprint sensor is the one in sliding type semiconductor fingerprint sensor, CMOS fingerprint sensor and CCD fingerprint sensor.
Finger print characteristic abstract device 30 is connected with described fingerprint acquisition device 20, by fingerprint algorithm, the calculation process such as image enhaucament, smoothing processing, Edge contrast, binaryzation are carried out to the fingerprint image collected and extract minutiae point attribute, and then obtain fingerprint characteristic data.
Described storage unit 40 is storer, prestores fingerprint template.Here, can described fingerprint acquisition device 20 collection in worksite fingerprint be passed through, then be taken the fingerprint characteristic by described Finger print characteristic abstract device 30, generate fingerprint template, and be stored in described storage unit 40.In addition, can also to be taken the fingerprint from existing fingerprint image file characteristic by described Finger print characteristic abstract device 30, and then generate fingerprint template, then be stored in described storage unit 40.
Described fingerprint comparison device 50, the fingerprint template for the fingerprint characteristic that extracted by described Finger print characteristic abstract device 30 and described storage unit 40 is compared, the similarity of both acquisitions.
Described control device 60 is central processing unit, compares for controlling described fingerprint comparison device 50, and controls described comparison threshold values adjusting gear 80 and adjust comparison threshold values and export finger print identification verification result.When described fingerprint comparison device 50 is compared, if both similarities reach the threshold values of described comparison threshold values adjusting gear 80 automatic adaptation, then fingerprint authentication passes through; Otherwise fingerprint authentication does not pass through.Described control device 60 obtains and exports finger print identification verification result by communication device or display screen.
Comparison threshold values adjusting gear 80, is connected with described fingerprint comparison device 50 and control device 60, for adjusting the comparison threshold values of fingerprint.Described adjustment can manually input comparison threshold values or adjustment threshold range by input media, also automatically can adjust the threshold values of fingerprint comparison according to the statistical law of the factor impacts such as air themperature humidity, sensor ageing and dry wet finger.Like this, avoiding changeless comparison threshold values limitation in actual applications, when ensureing identity verification secure, farthest improving the efficiency of identification, and effectively reduce misclassification rate and reject rate.
Fig. 2 is the workflow diagram of the fingerprint verification system of first embodiment of the invention, and as shown in the figure, it comprises step:
S1: fingerprint acquisition device 20 gathers fingerprint image;
S2: Finger print characteristic abstract device 30 to be taken the fingerprint feature by fingerprint algorithm process;
S3: fingerprint characteristic and the fingerprint template being pre-stored within storage unit 40 are compared by fingerprint comparison device 50, the similarity of both acquisitions;
S4: control device 60 controls the comparison threshold values of comparison threshold values adjusting gear adjustment fingerprint; Wherein, described adjustment can manually input comparison threshold values or adjustment threshold range by input media, also automatically can adjust the threshold values of fingerprint comparison according to the statistical law of the factor impacts such as air themperature humidity, sensor ageing and dry wet finger.
S5: when similarity reaches comparison threshold values, control device 60 exports finger print identification verification to be passed through; Otherwise control device 60 exports finger print identification verification failure.
Fig. 3 is the structural drawing of the fingerprint verification system of second embodiment of the invention, on the basis of above-mentioned first embodiment, the comparison threshold values adjusting gear 80 of fingerprint verification system described in the second embodiment comprises the statistical module 810 connected successively, control module 820 and threshold values arrange module 830, wherein said statistical module 810 is for adding up the described fingerprint verification system checking number of times that passes through of fingerprint and time and obtaining the frequency of each time period fingerprint authentication, described threshold values arranges module 830 for arranging multiple threshold values Grad, described control module 820 arranges the threshold values Grad of module 830 setting for threshold values according to the time period fingerprint authentication frequency automatic adaptation of described statistical module 810 acquisition.During described control module 820 automatic adaptation rule, the sequence from small to large of multiple threshold values Grad is mated with the frequency sequence from high to low of each time period.
Such as, the number of times passed through according to the statistics of described statistical module 810 described fingerprint verification system checking fingerprint and time also obtain the frequency data (being a time period with 30 minutes or less time usually, was a time period with 3 hours for convenience of description) of each time period fingerprint authentication here.
Table 1
| Time period | 1-3 | 4-6 | 7-9 | 10-12 | 13-15 | 16-18 | 19-21 | 22-24 |
| Number of times | 12 | 8 | 3540 | 2132 | 1547 | 2580 | 4150 | 2580 |
| Sequence | 6 | 7 | 2 | 4 | 5 | 3 | 1 | 3 |
As shown in table 1, carry out adding up the number of times that described fingerprint verification system is verified with in one day 24 hours every 3 hours for the time period, obtain sorting successively from high to low of the frequency of each time period fingerprint authentication.Visible, 19 .-21 the highest sequence of time period frequency 2,16 .-18 time periods of 1,7 .-9 slot sortings and 22 .-24 time periods sort 3 side by side, etc.
Described threshold values arranges module 830, and to arrange the number of threshold values Grad consistent with the number of described statistical module setup times section, so that corresponding with it adaptive.As described in Table 2,8 threshold values Grad are set here, and sort from small to large.
Table 2
| Sequence | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Threshold values | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 |
During described control module 820 automatic adaptation rule, the sequence from small to large of multiple threshold values Grad is mated with the frequency sequence from high to low of each time period.Here namely, the threshold values of the time period corresponding adaptive table 2 li sequence 1 of table 1 li sequence 1,80,7 .-9 time period adaptive 81,16 .-18 time periods of threshold values of 19 .-21 time period adaptive threshold values and 22 .-24 time period adaptive threshold values 82, by that analogy.
If passed through at 16 .-18 time period finger print identification verifications next time, then in table 1, the sequence of 16 .-18 time periods is still sequence 3, but 22 .-24 slot sortings become sequence 4, if so next fingerprint authentication is just in time 22 .-24 time periods, then the threshold values of its adaptation is the threshold values 83 of 4 correspondences of sorting in table 2.
Like this, described fingerprint verification system is according to historical statistical data, automatic adjustment fingerprint comparison threshold values, at the threshold values that the time period automatic adaptation that fingerprint authentication frequency is higher is lower, under the prerequisite ensureing fingerprint authentication safety and stability, improve the efficiency of fingerprint comparison, avoid because the threshold values be fixedly installed is too high cause too high reject rate; At the threshold values that the time period automatic adaptation that fingerprint authentication frequency is lower is higher, automatically fingerprint comparison threshold values is improved in the time period that fingerprint authentication is less, improve the safety and reliability of fingerprint authentication, avoid because the threshold values be fixedly installed is too low cause too high misclassification rate.
Fig. 4 is the structural drawing of the fingerprint verification system of third embodiment of the invention.As shown in the figure, on the basis of above-mentioned first embodiment, the comparison threshold values adjusting gear 80 of fingerprint verification system described in the 3rd embodiment comprises the time module 850, control module 860 and the threshold values that connect successively and arranges module 870, wherein said time module 850 comprises clock circuit for the described system log (SYSLOG) time, described threshold values arranges module 870 for arranging multiple threshold values Grad, and described control module 860 arranges for threshold values described in the time automatic adaptation that records according to described time module 850 the threshold values Grad that module 870 arranges.During described control module 860 automatic adaptation rule, multiple threshold values Grad and each time period fix Corresponding matching.
Table 3
| Time period | 1-3 | 4-6 | 7-9 | 10-12 | 13-15 | 16-18 | 19-21 | 22-24 |
| Threshold values | 85 | 89 | 80 | 81 | 82 | 81 | 80 | 83 |
As shown in table 3, described threshold values arranges module 870 equally to carry out arranging the threshold values that 8 time periods fix correspondence for the time period with in one day 24 hours every 3 hours.Here, arranging of each time period corresponding threshold value can be arranged according to the hobby of frequency of utilization or individual privacy or security, such as often needing to verify that the time period (7 .-9 point) of Fingerprint Identity is under the prerequisite ensureing fingerprint authentication safety and stability, lower comparison threshold values is set, improve the efficiency of fingerprint comparison, avoid because the threshold values be fixedly installed is too high cause too high reject rate; And (4 .-6 point) arranges higher comparison threshold values at dead of night, improve the safety and reliability of fingerprint authentication, avoid, because the threshold values be fixedly installed is too low cause too high misclassification rate, preventing from trespassing.
Such as, user gathers fingerprint at 22:30:15 by described fingerprint acquisition device 20 and carries out finger print identification verification, and described time module 850 records the time that described fingerprint acquisition device 20 gathers fingerprint.Described control module 860 differentiates that the time period residing for time 22:30:15 that described time module 850 records is 22 .-24 points, and then 22 .-24 time periods of automatic adaptation fix corresponding comparison threshold values 83.
The present invention also provides a kind of electronic equipment, and it comprises above-mentioned fingerprint verification system, for verifying electronic equipment legal identity or rights of using, improves the security of electronic equipment.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (6)
1. a fingerprint verification system, comprise fingerprint acquisition device, Finger print characteristic abstract device, for storing the storage unit of fingerprint template, for the fingerprint comparison device that the fingerprint characteristic extracted by described Finger print characteristic abstract device is compared with the fingerprint template being stored in described storage unit, for controlling control device and the power supply of described fingerprint comparison device and output fingerprint authentication result, it is characterized in that, also comprise the comparison threshold values adjusting gear be connected with described fingerprint comparison device and control device, for adjusting the comparison threshold values of fingerprint, described comparison threshold values adjusting gear comprises the time module connected successively, control module and threshold values arrange module, wherein said time module is used for the described system log (SYSLOG) time, described threshold values arranges module for arranging multiple threshold values Grad, described control module is used for threshold values described in the time automatic adaptation that records according to described time module and arranges the threshold values Grad of module installation.
2. fingerprint verification system as claimed in claim 1, it is characterized in that, during described control module automatic adaptation, multiple threshold values Grad and each time period fix Corresponding matching.
3. fingerprint verification system as claimed in claim 1, it is characterized in that, described fingerprint acquisition device comprises fingerprint sensor, and described fingerprint sensor is the one in sliding type semiconductor fingerprint sensor, CMOS fingerprint sensor and CCD fingerprint sensor.
4. fingerprint verification system as claimed in claim 1, is characterized in that, Finger print characteristic abstract device to be taken the fingerprint feature by fingerprint algorithm from fingerprint image.
5. fingerprint verification system as claimed in claim 1, it is characterized in that, when described fingerprint comparison device is compared, if both similarities reach the threshold values of described comparison threshold values adjusting gear automatic adaptation, then fingerprint authentication passes through; Otherwise fingerprint authentication does not pass through.
6. an electronic equipment, is characterized in that, it comprises the fingerprint verification system as described in any one of claim 1-5.
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| CN201310027495.2A CN103093209B (en) | 2013-01-23 | 2013-01-23 | Fingerprint verification system |
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| CN201310027495.2A Division CN103093209B (en) | 2013-01-23 | 2013-01-23 | Fingerprint verification system |
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| CN201510202428.9A Pending CN104794448A (en) | 2013-01-23 | 2013-01-23 | Fingerprint verification system |
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| CN106446802A (en) * | 2016-09-07 | 2017-02-22 | 深圳市金立通信设备有限公司 | Fingerprint identification method and terminal |
| WO2017067271A1 (en) * | 2015-10-19 | 2017-04-27 | 广东欧珀移动通信有限公司 | Fingerprint recognition method, fingerprint recognition apparatus, and mobile terminal |
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| CN103400425A (en) * | 2013-08-14 | 2013-11-20 | 常熟合正企业管理咨询有限公司 | Fingerprint recognition time recorder |
| CN105989333B (en) * | 2015-02-12 | 2018-08-17 | 深圳市汇顶科技股份有限公司 | Fingerprint verification method, system and the terminal for supporting finger print identifying function |
| CN105160320B (en) * | 2015-09-02 | 2019-03-01 | 小米科技有限责任公司 | Fingerprint identification method, device and mobile terminal |
| CN105303174B (en) | 2015-10-19 | 2019-12-10 | Oppo广东移动通信有限公司 | fingerprint input method and device |
| CN105404807B (en) * | 2015-12-08 | 2019-02-05 | Oppo广东移动通信有限公司 | Promote the method, device and mobile terminal of fingerprint recognition performance |
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| CN105701387A (en) * | 2016-02-24 | 2016-06-22 | 联想(北京)有限公司 | Biological characteristic data processing method and electronic device |
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| CN110335377B (en) * | 2019-05-24 | 2022-05-13 | 深圳绿米联创科技有限公司 | Fingerprint verification method and device, electronic equipment and storage medium |
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Also Published As
| Publication number | Publication date |
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| CN103093209B (en) | 2015-07-29 |
| CN103093209A (en) | 2013-05-08 |
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Application publication date: 20150722 |