CN101030246A - Method for discriminating fingerprint - Google Patents
Method for discriminating fingerprint Download PDFInfo
- Publication number
- CN101030246A CN101030246A CN 200710073861 CN200710073861A CN101030246A CN 101030246 A CN101030246 A CN 101030246A CN 200710073861 CN200710073861 CN 200710073861 CN 200710073861 A CN200710073861 A CN 200710073861A CN 101030246 A CN101030246 A CN 101030246A
- Authority
- CN
- China
- Prior art keywords
- fingerprint
- finger
- point
- display screen
- unique point
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Landscapes
- Collating Specific Patterns (AREA)
- Image Input (AREA)
Abstract
A method for identifying fingerprint includes carrying out fingerprint registering and sampling step in both fingerprint registering and fingerprint identifying processes, collecting fingerprint region using preset character point as center by collection device and prompting user to adjust position of finger on fingerprint reader when fingerprint sample is collected.
Description
Technical field
The present invention relates to a kind of fingerprint identification technology, can be applicable to fields such as all authentication places, gate control system, bank ATM/POS machine system, network identification system, antitheft door/proof box finger-print cipher, automotive theft proof system based on fingerprint identification technology.
Background technology
The process of fingerprint recognition is divided the two large divisions: i.e. enrollment process and identifying.Enrollment process is that the feature of fingerprint is obtained sample fingerprint by finger print input device in advance, and through handling, the unique point that takes the fingerprint is saved in specific memory district or database then.The process of identification is that the sample fingerprint feature that will obtain is come comparison with the fingerprint characteristic of having preserved, thereby judges whether it is same piece of fingerprint.Detailed process is referring to Fig. 1.
Product from existing fingerprint recognition exploitation industry no matter be in the fingerprint enrollment process, or in the fingerprint recognition process, also do not have a company's use to carry out fingerprint someway and gathers effectively.Like this, in actual mechanical process, the fingerprint of registration tends to the fingerprint that will discern can't discern because the finger-print region that gather front and back is inconsistent, the discrimination of fingerprint does not guarantee reliably, cause the fingerprint recognition inefficiency, influence user's confidence greatly, the product promotion difficulty strengthens.
Owing to the effective coverage of gathering fingerprint is not controlled, same piece of fingerprint if collection is regional different, can cause fingerprint to be rejected in identifying, as shown in Figures 2 and 3.The fingerprint that finger-printer reader was collected when the fingerprint that finger-printer reader collected when Fig. 2 is registration, Fig. 3 were identification.Obviously, this identifying can not be passed through, because finger-print region is different, even same piece of fingerprint, outstanding again algorithm for recognizing fingerprint also can't be discerned and pass through.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of recognition methods of fingerprint, with solving existing fingerprint identification technology when the registration fingerprint, owing to the problem of not carrying out the fingerprint recognition inefficiency that effective fingerprint typing causes.
In order to solve the problems of the technologies described above, the invention discloses a kind of recognition methods of fingerprint, comprise fingerprint enrollment process and fingerprint recognition process, wherein the fingerprint enrollment process comprises fingerprint registration sampling step, the fingerprint recognition process comprises the fingerprint recognition sampling step, and the content of described fingerprint registration sampling step comprises:
When obtaining sample fingerprint, the collecting device collection is the appointment finger-print region of reference point with the unique point of prior setting, and the prompting user adjusts the position of finger on finger-printer reader.
Preferably, the content of described fingerprint recognition sampling step comprises: when obtaining sample fingerprint, the collecting device collection is the appointment finger-print region of reference point with the unique point of prior setting, the fingerprint characteristic that collects in the fingerprint characteristic that extracts and the described fingerprint registration sampling process is compared, and point out the user to adjust the position of finger on finger-printer reader.This improvement can be applied in fingerprint positioning function and fingerprint prompt facility the identifying of fingerprint.So, fingerprint enrollment process and fingerprint recognition process all comprise the technology of the present invention, can improve the efficient of fingerprint recognition greatly.
Preferably: the unique point of described prior setting is finger print core point or delta of the fingerprint point.
Preferably: adjust the position of finger on finger-printer reader with display screen prompting user.This prompting mode is a visual cues, can well improve prompt facility by INTERFACE DESIGN.Display screen can be the display screen as PC, and the LCD of embedded system screen etc. not only can be to showing the current position of fingerprint, and, running into dried fingerprint, wet fingerprint when fingerprint area is not enough, can point out the user to handle accordingly.Show equipment, also can utilize other the sound or the signal feedback of LED lamp and so on to adjust for user adversary's fingering row accordingly.
Preferably: on described display screen, come the position of the unique point of the prior setting on the instruction screen, on described display screen, indicate the unique point of prior setting should adjust to the correct position scope with posting with sprocket bit.Described sprocket bit is preferably the cross sprocket bit, and described posting is preferably four jiaos of spacing postings.The position of posting, size, Show Styles can be adjusted as required.
The invention has the beneficial effects as follows: compared to existing technology, the present invention proposes the acquisition method based on the unique point of prior setting, utilizes rational algorithm to discern the unique point of the prior setting of fingerprint, in advance unique point such as core point or the triangle of setting; And can adopt friendly man-machine interface, and prompting is gathered the user and is adjusted the position of finger on finger-printer reader, and the unique point of gathering with prior setting is the finger-print region of reference point, effectively guarantees the pickup area position and the size of fingerprint; And by automatic computing, can effectively and easily discern fingerprint very much, the finger-print region of the fingerprint that makes when registration when discerning is consistent basically, can overcome the deficiencies in the prior art fully.Do not have at fingerprint quality under the situation of what change, discrimination improves greatly, and discrimination can reach 100%.
Description of drawings
Fig. 1 is the procedure chart of the used fingerprint identification method of prior art.
A kind of characteristic fingerprint figure that Fig. 2 may collect when being registration.
A kind of characteristic fingerprint figure that Fig. 3 may collect when being identification.
Fig. 4 is that the unique point that fingerprint is set in advance is the synoptic diagram of core point.
Fig. 5 is that the unique point of setting in advance is the synoptic diagram of trigpoint.
Fig. 6 is the upper layer software (applications) surface chart with the finger-printer reader associated working.
Fig. 7 is the block scheme of fingerprint gatherer process.
Fig. 8 is the synoptic diagram of the automatic location algorithm of fingerprint core point.
A kind of sample graph of finger-printer reader when Fig. 9 is registration.
The sample graph of a kind of finger-printer reader when Figure 10 is identification.
The fingerprint image of reader sampling when Figure 11 is identification, situation is departed from the fingerprint collecting zone that this figure shows.
Embodiment
The invention provides a kind of recognition methods of fingerprint.
A kind of recognition methods of fingerprint generally includes fingerprint enrollment process and fingerprint recognition process.Referring to Fig. 1, whole process of the present invention is similar to it.Enrollment process is taken a sample by finger-printer reader, when obtaining sample fingerprint, the collecting device collection is the finger-print region at center with the unique point of prior setting, if the unique point of setting is not in appointed positions in advance, the prompting user adjusts the position of finger on finger-printer reader.The unique point that takes the fingerprint then deposits the data of extracting in fingerprint database and retains.
The unique point that need to prove the prior setting on the fingerprint comprises finger print core point and delta of the fingerprint point.Finger print core point is referring to white crosses mark among Fig. 4, and finger print core point is the zonule that bigger variation takes place each finger print direction top is arch, and also the lower part is the zonule of spill.Delta of the fingerprint point is referring to white crosses mark among Fig. 5, and the delta of the fingerprint point is the zonule that each finger print lines is approximated to triangular form.
In the process of top method, the prompting mode in " the prompting user adjusts the position of finger on finger-printer reader " is the display screen prompting more intuitively.Promptly adjust the position of finger on finger-printer reader with display screen prompting user.Finger-printer reader can be connected to USB interface on the computer, realize the collecting work of finger-printer reader by fingerprint management software to fingerprint, tension management software is made the extraction work of finger print core point then, and deposits the data of fingerprint extraction in computer, thereby finishes enrollment process.The working interface of tension management software is referring to shown in Figure 6.On the fingerprint display screen can but be not limited to use the cross sprocket bit to come core point on the instruction screen.On display screen, indicate fingerprint to need the reference point location of pickup area with posting.Posting is used to point out the zone of the positioning feature point that needs will set in advance, and the cross sprocket bit is used to follow the tracks of the core point of fingerprint, and when the cross sprocket bit was in posting, the expression fingerprint collecting satisfied the collection position requirement.
Referring to Fig. 6, the location square frame of fingerprint display screen part is positioned at the centre (actual can in the optional position of images acquired) of image among the figure, and the position that the core point of fingerprint is current represented in cross.Registration that shows on Fig. 9 and Figure 10 and identification fingerprint can correctly read and use, and the image among Figure 11 is not because the position can be rejected use in the square frame of appointment.Posting can be adjusted size or position as required.Adopt this method, need discern automatically finger print core point, certainly, not to core point identification, user oneself also can achieve the goal according to the position that visual display result oneself is adjusted finger.In advance the unique point of setting is the delta of the fingerprint point, is the same to its principle that positions, and just may not be the center with the trigpoint, but is the finger-print region of reference point in certain direction (as the finger fingertip direction) with this point, just no longer description.
Fingerprint recognition system preferably has the function of displayed image, as the display screen of PC, and the LCD of embedded system screen or the like.Not only can show the position that fingerprint is current, and, running into dried fingerprint, wet fingerprint when fingerprint area is not enough, can point out the user to handle accordingly.Show equipment, also can utilize other the sound or the signal feedback of LED lamp and so on to adjust for user adversary's fingering row accordingly.
There is the prompting of display frame can inform very clearly that the fingerprint of user oneself input is the size of core point current location and peripheral finger-print region and the depth degree of fingerprint, the user is in the fingerprint recognition process, under deviation is not very big situation, can not adjust the locating area of the unique point of prior setting to appointment, also can correctly discern, but be to use locating area that the unique point of prior setting is positioned, satisfy under the situation of setting requirement in picture quality, correctly discern fingerprint surely with regard to one.And unlike prior art, even imported fingerprint as shown in Figure 2 in enrollment process, the user can't know the fingerprint characteristic situation that oneself is imported owing to there is not visual interface, in the fingerprint recognition process afterwards, just can't provide fingerprint to finger-printer reader according to the fingerprint characteristic in when registration.Cause thus repeat the input, cause discrimination low.
In fact, not only can in the fingerprint enrollment process, adopt the technology of the present invention, can also in the fingerprint recognition process, use the present invention.
The fingerprint recognition process is to be sampled by finger-printer reader earlier, carry out feature extraction by fingerprint management software then, when obtaining sample fingerprint, the collecting device collection is the finger-print region at center with the core point, the characteristic fingerprint that extracts is registered the characteristic fingerprint that collects in the sampling process with the front fingerprint compares, and by with the fingerprint enrollment process in the same display screen mode inform that the user adjusts the position of finger on finger-printer reader.
What top fingerprint extraction process adopted is that the fingerprint management software that runs on the computer carries out the feature extraction work of fingerprint, the foundation and the feature contrast work of fingerprint database, is not limited only to rely on the application of computer in actual applications.The present invention can be applicable to all authentication places based on fingerprint identification technology, gate control system, bank ATM/POS machine system, network identification system, antitheft door/proof box finger-print cipher, fields such as automotive theft proof system.
The automatic location algorithm of finger print core point is referring to Fig. 7.
A) field of direction of each pixel in the calculated fingerprint image.
B) according to the field of direction, the reliability of each pixel in the calculated fingerprint image forms a reliability table.
C) according to the reliability table, to each poor pixel of reliability value in the reliability table of correspondence, be the center with this pixel, radius is in the scope of R, carries out the integration of y direction respectively according to formula according to graphic two zones.
D) calculate the difference in A1 and A2 district, be the curvature ε=A1-A2 of each pixel.
E) pixel of difference maximum is core point.
Can adjust radius R as required and angle θ can rule of thumb adjust.
Fingerprint management software fingerprinting gatherer process is referring to the block scheme shown in Fig. 6.
Be summarized as follows:
Whether effective finger-print region reaches the size of appointment in step 2, the checking image, if, execution in step 3, if not, the prompting user gathers fingerprint collecting again, repeats 1;
Step 5, inspection core point have not in the posting of appointment, if, execution in step 6, if not, the prompting user gathers fingerprint collecting again, repeats 1;
Step 6, extract minutiae, and registration or identification.
Claims (7)
1, a kind of recognition methods of fingerprint, comprise fingerprint enrollment process and fingerprint recognition process, wherein the fingerprint enrollment process comprises fingerprint registration sampling step, and the fingerprint recognition process comprises the fingerprint recognition sampling step, it is characterized in that the content of described fingerprint registration sampling step comprises:
When obtaining sample fingerprint, the collecting device collection is the appointment finger-print region of reference point with the unique point of prior setting, and the prompting user adjusts the position of finger on finger-printer reader.
2, the recognition methods of a kind of fingerprint as claimed in claim 1, it is characterized in that, the content of described fingerprint recognition sampling step comprises: when obtaining sample fingerprint, the collecting device collection is the appointment finger-print region of reference point with the unique point of prior setting, the fingerprint characteristic that collects in the fingerprint characteristic that extracts and the described fingerprint registration sampling process is compared, and point out the user to adjust the position of finger on finger-printer reader.
3, the recognition methods of a kind of fingerprint as claimed in claim 1 or 2 is characterized in that: the unique point of described prior setting is finger print core point or delta of the fingerprint point.
4, a kind of recognition methods of fingerprint as claimed in claim 1 or 2 is characterized in that: adjust the position of finger on finger-printer reader with display screen prompting user.
5, as the recognition methods of a kind of fingerprint as described in the claim 3, it is characterized in that: adjust the position of finger on finger-printer reader with display screen prompting user.
6, the recognition methods of a kind of fingerprint as claimed in claim 4, it is characterized in that: on described display screen, come the position of the unique point of the prior setting on the instruction screen, on described display screen, indicate the unique point of prior setting should adjust to the correct position scope with posting with sprocket bit.
7, the recognition methods of a kind of fingerprint as claimed in claim 5, it is characterized in that: on described display screen, come the position of the unique point of the prior setting on the instruction screen, on described display screen, indicate the unique point of prior setting should adjust to the correct position scope with posting with sprocket bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710073861 CN101030246A (en) | 2007-04-09 | 2007-04-09 | Method for discriminating fingerprint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710073861 CN101030246A (en) | 2007-04-09 | 2007-04-09 | Method for discriminating fingerprint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101030246A true CN101030246A (en) | 2007-09-05 |
Family
ID=38715584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710073861 Pending CN101030246A (en) | 2007-04-09 | 2007-04-09 | Method for discriminating fingerprint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101030246A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980244A (en) * | 2010-07-29 | 2011-02-23 | 深圳市文鼎创数据科技有限公司 | Fingerprint acquisition and display method, device and system |
| CN102306286A (en) * | 2011-08-24 | 2012-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Identity recognition method, identity recognition system and identity recognition terminal |
| CN102460473A (en) * | 2009-06-24 | 2012-05-16 | 皇家飞利浦电子股份有限公司 | Robust biometric feature extraction with and without reference points |
| CN103198306A (en) * | 2013-04-24 | 2013-07-10 | 北京东方金指科技有限公司 | Fingerprint collector capable of prompting correction of wrong finger position |
| CN103632268A (en) * | 2013-12-03 | 2014-03-12 | 康连生 | Security authentication method and security authentication payment terminal |
| CN103778424A (en) * | 2014-01-14 | 2014-05-07 | 杭州晟元芯片技术有限公司 | Fingerprint input method based on grids |
| CN103957107A (en) * | 2014-05-19 | 2014-07-30 | 浙江维尔科技股份有限公司 | Identity authentication method and device |
| CN105139008A (en) * | 2015-10-09 | 2015-12-09 | 上海古鳌电子科技股份有限公司 | Finger vein authentication system |
| WO2016023264A1 (en) * | 2014-08-14 | 2016-02-18 | 深圳市汇顶科技股份有限公司 | Fingerprint identification method and fingerprint identification device |
| CN105389565A (en) * | 2015-11-13 | 2016-03-09 | 广东欧珀移动通信有限公司 | Fingerprint registration method, fingerprint registration device and terminal equipment |
| CN105487784A (en) * | 2015-11-25 | 2016-04-13 | 上海斐讯数据通信技术有限公司 | Control method and device of electronic terminal, terminal and system |
| CN105989349A (en) * | 2014-10-24 | 2016-10-05 | 神盾股份有限公司 | Fingerprint registration data generation method and electronic device |
| CN106096513A (en) * | 2016-06-01 | 2016-11-09 | 深圳信炜科技有限公司 | Fingerprint identification method, fingerprint recognition system and electronic equipment |
| CN106408732A (en) * | 2016-11-30 | 2017-02-15 | 桂林市逸仙中学 | School library access and exit control system based on fingerprint identification |
| CN106682567A (en) * | 2015-11-11 | 2017-05-17 | 方正国际软件(北京)有限公司 | Acquisition processing method of fingerprint images and device |
| CN106850696A (en) * | 2017-04-09 | 2017-06-13 | 莆田市烛火信息技术有限公司 | Account number login method, device and terminal based on fingerprint recognition |
| CN106850697A (en) * | 2017-04-09 | 2017-06-13 | 莆田市烛火信息技术有限公司 | It is a kind of to be input into method, device and equipment that fingerprint logs in account number |
| CN107452102A (en) * | 2017-07-18 | 2017-12-08 | 云丁网络技术(北京)有限公司 | A kind of intelligent fingerprint door lock and its fingerprint input method |
| CN111310685A (en) * | 2012-06-29 | 2020-06-19 | 苹果公司 | Enrollment and fingerprint sensing system using composite fingerprint images |
-
2007
- 2007-04-09 CN CN 200710073861 patent/CN101030246A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102460473A (en) * | 2009-06-24 | 2012-05-16 | 皇家飞利浦电子股份有限公司 | Robust biometric feature extraction with and without reference points |
| CN102460473B (en) * | 2009-06-24 | 2013-12-25 | 皇家飞利浦电子股份有限公司 | Robust biometric feature extraction with and without reference point |
| CN101980244A (en) * | 2010-07-29 | 2011-02-23 | 深圳市文鼎创数据科技有限公司 | Fingerprint acquisition and display method, device and system |
| CN102306286A (en) * | 2011-08-24 | 2012-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Identity recognition method, identity recognition system and identity recognition terminal |
| US12165431B2 (en) | 2012-06-29 | 2024-12-10 | Apple Inc. | Enrollment using synthetic fingerprint image and fingerprint sensing systems |
| CN111310685A (en) * | 2012-06-29 | 2020-06-19 | 苹果公司 | Enrollment and fingerprint sensing system using composite fingerprint images |
| CN111310685B (en) * | 2012-06-29 | 2024-05-07 | 苹果公司 | Registration and fingerprint sensing system using composite fingerprint image |
| CN103198306A (en) * | 2013-04-24 | 2013-07-10 | 北京东方金指科技有限公司 | Fingerprint collector capable of prompting correction of wrong finger position |
| CN103632268A (en) * | 2013-12-03 | 2014-03-12 | 康连生 | Security authentication method and security authentication payment terminal |
| CN103778424A (en) * | 2014-01-14 | 2014-05-07 | 杭州晟元芯片技术有限公司 | Fingerprint input method based on grids |
| CN103778424B (en) * | 2014-01-14 | 2018-01-09 | 杭州晟元数据安全技术股份有限公司 | A kind of fingerprint input method based on palace lattice |
| CN103957107A (en) * | 2014-05-19 | 2014-07-30 | 浙江维尔科技股份有限公司 | Identity authentication method and device |
| WO2016023264A1 (en) * | 2014-08-14 | 2016-02-18 | 深圳市汇顶科技股份有限公司 | Fingerprint identification method and fingerprint identification device |
| US9824258B2 (en) | 2014-08-14 | 2017-11-21 | Shenzhen GOODIX Technology Co., Ltd. | Method and apparatus for fingerprint identification |
| CN105989349A (en) * | 2014-10-24 | 2016-10-05 | 神盾股份有限公司 | Fingerprint registration data generation method and electronic device |
| CN105989349B (en) * | 2014-10-24 | 2019-11-01 | 神盾股份有限公司 | Fingerprint registration data generation method and electronic device |
| CN105139008A (en) * | 2015-10-09 | 2015-12-09 | 上海古鳌电子科技股份有限公司 | Finger vein authentication system |
| CN106682567A (en) * | 2015-11-11 | 2017-05-17 | 方正国际软件(北京)有限公司 | Acquisition processing method of fingerprint images and device |
| CN105389565B (en) * | 2015-11-13 | 2019-04-02 | Oppo广东移动通信有限公司 | Fingerprint register method, apparatus and terminal device |
| US10255476B2 (en) | 2015-11-13 | 2019-04-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Fingerprint registration method and device and terminal thereof |
| CN109800741A (en) * | 2015-11-13 | 2019-05-24 | Oppo广东移动通信有限公司 | Fingerprint register method, apparatus and terminal device |
| CN109800741B (en) * | 2015-11-13 | 2023-07-14 | Oppo广东移动通信有限公司 | Fingerprint registration method, fingerprint registration device and terminal equipment |
| CN105389565A (en) * | 2015-11-13 | 2016-03-09 | 广东欧珀移动通信有限公司 | Fingerprint registration method, fingerprint registration device and terminal equipment |
| CN105487784A (en) * | 2015-11-25 | 2016-04-13 | 上海斐讯数据通信技术有限公司 | Control method and device of electronic terminal, terminal and system |
| CN106096513A (en) * | 2016-06-01 | 2016-11-09 | 深圳信炜科技有限公司 | Fingerprint identification method, fingerprint recognition system and electronic equipment |
| CN106408732A (en) * | 2016-11-30 | 2017-02-15 | 桂林市逸仙中学 | School library access and exit control system based on fingerprint identification |
| CN106850697A (en) * | 2017-04-09 | 2017-06-13 | 莆田市烛火信息技术有限公司 | It is a kind of to be input into method, device and equipment that fingerprint logs in account number |
| CN106850696A (en) * | 2017-04-09 | 2017-06-13 | 莆田市烛火信息技术有限公司 | Account number login method, device and terminal based on fingerprint recognition |
| CN107452102A (en) * | 2017-07-18 | 2017-12-08 | 云丁网络技术(北京)有限公司 | A kind of intelligent fingerprint door lock and its fingerprint input method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101030246A (en) | Method for discriminating fingerprint | |
| CN108982508B (en) | A defect detection method for plastic package IC chips based on feature template matching and deep learning | |
| CN1248153C (en) | Method for detecting falsity in fingerprint recognition by classfying the texture of grey-tone differential values | |
| CN101334836B (en) | License plate positioning method incorporating color, size and texture characteristic | |
| CN113936307B (en) | Vein image recognition method and device based on thin film sensor | |
| CN108416355A (en) | A kind of acquisition method of the industry spot creation data based on machine vision | |
| CN109697440A (en) | A kind of ID card information extracting method | |
| CN1804905A (en) | Voting paper recognition method for electronic voting boxes | |
| CN1573828A (en) | Automatic teller machine and method for tracing bank notes | |
| CN111091124B (en) | Spine character recognition method | |
| CN103258198A (en) | Extraction method for characters in form document image | |
| WO2007117334A3 (en) | Document analysis system for integration of paper records into a searchable electronic database | |
| CN106650752B (en) | A method of car body color recognition | |
| CN101102419A (en) | A method for locating video subtitle area | |
| CN101038686A (en) | Method for recognizing machine-readable travel certificate | |
| CN108229483A (en) | Based on the doorplate pressed characters identification device under caffe and soft triggering | |
| CN105825169A (en) | Road-image-based pavement crack identification method | |
| CN101584624A (en) | Guideboard recognition blind-guide device and method thereof based on DSP | |
| CN102194121A (en) | Application of improved maximum between-class variance method in tongue crack recognition | |
| KR101937398B1 (en) | System and method for extracting character in image data of old document | |
| CN111695498A (en) | Wood identity detection method | |
| CN1920850A (en) | Image Acquisition Equipment Independence Technology Method in Fingerprint Recognition Algorithm | |
| CN107977600A (en) | A kind of signature false distinguishing method based on side palm feature | |
| CN110222660B (en) | A signature authentication method and system based on the fusion of dynamic and static features | |
| CN107066997B (en) | A kind of electrical component price quoting method based on image recognition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |