CN102737223A - Cross-device matching fingerprint feature coding method - Google Patents
Cross-device matching fingerprint feature coding method Download PDFInfo
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- CN102737223A CN102737223A CN2011100878188A CN201110087818A CN102737223A CN 102737223 A CN102737223 A CN 102737223A CN 2011100878188 A CN2011100878188 A CN 2011100878188A CN 201110087818 A CN201110087818 A CN 201110087818A CN 102737223 A CN102737223 A CN 102737223A
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Abstract
When a conventional fingerprint recognition algorithm processes fingerprints into feature data, an acquisition device is usually corresponding to a type of fingerprint feature data. The fingerprint acquisition devices are not compatible with each other. Even if the devices are produced by a same company, the types of the devices are also divided into scratching-type and area-type. The non-universal fingerprint encoding closely related with the device results in that the fingerprint feature data can not be matched cross-device. The present invention provides a new fingerprint feature coding format which incorporates the combination of fingerprint device manufacturers and types of product devices together into the fingerprint feature data. The fingerprint feature data after being processed includes information of the manufacturers and the devices, and also includes the basic information of a portion of original images, so that the cross-device matching for the fingerprint feature data is realized.
Description
Technical field
The present invention relates to field of biological recognition, be specifically related to a kind of fingerprint characteristic coding method of striding equipment comparison.
Background technology
In general, pairing discrete features during two comparisons of two pieces of fingerprints is called the minutiae point or the eigenwert of fingerprint.Minutiae point has comprised several types again.The position that wrinkle ridge finishes is called the end points of fingerprint, and two striped bars from a point separately are called the bifurcation of fingerprint.The unique point of fingerprint image nucleus is called the core point of fingerprint.In order to carry out the order comparison, the streakline direction and the residing position of two pieces of corresponding fingerprints can be by records.Wherein directional information is with the embodied of angle.General with zero degree performance level line.Feature locations closely related with original image fingerprint, the different information such as position that algorithm for recognizing fingerprint showed also are not quite similar.The comparison process of fingerprint is that treated two pieces of fingerprint characteristic datas carry out data like the degree folding relatively, finally to determine whether the being process of same fingerprint.
Summary of the invention
When the conventional fingerprint recognizer was treated to characteristic with fingerprint, normally a kind of collecting device each other can't be compatible corresponding to a kind of fingerprint characteristic data.Even the equipment that same company produced also has the branch of scratch type and area formula, this uncurrent finger-print codes causes fingerprint characteristic data because of closely related with equipment, therefore the comparison of impassable striding equipment.The present invention has newly created a kind of brand-new fingerprint characteristic coded format, and with fingerprint manufacturer, fingerprint characteristic data is enrolled in combinations such as the type of product facility in the lump.Fingerprint characteristic data after treatment promptly comprises the relevant information of vendor equipment, has also comprised the essential information of a part of original image.Realized the equipment comparison that collapses of fingerprint characteristic data.
Description of drawings
Fig. 1 has described the fingerprint characteristic data form
Embodiment
In conjunction with accompanying drawing the present invention is further specified.
The present invention is with the form of prefix, adds the data head information content of 12 bytes, the length and width information of the fingerprint image of having encoded, the resolution of fingerprint image, the corresponding manufacturer's information of characteristic, and unique sign of product information in the forward part of characteristic.When generating fingerprint characteristic data, from original image, obtain the length and width information of fingerprint image respectively, the manufacturer's information of acquisition algorithm from fingerprint algorithm gets access to the product information of hardware from collecting device, and Unified coding is advanced header.Fingerprint characteristic data form behind process the present invention coding is like (figure one).Below be data basis format list:
| Field name | Size of data (byte number) | Explanation |
| nWidth | 2 | The width of original image has been described |
| nHeight | 2 | The height of fingerprint image has been described |
| nDpi | 2 | The resolution of fingerprint image has been described |
| nVendorId | 2 | Unique manufacturer's information that indicates characteristic |
| nProductId | 2 | Unique fingerprint equipment information of gathering the eigen data that indicated |
| Reserved | 2 | Reserve expansion |
The processing of table on the process in the comparison process of algorithm, can be learnt the fingerprint equipment relevant information that current characteristic is corresponding through header, the striding equipment of characteristic identification between algorithm inside can be accomplished distinct device.Widen the range of application of fingerprint equipment greatly, needed the occasion of equipment mixed comparison to play an important role especially together.
Claims (4)
1. the present invention designs the encryption algorithm in a kind of fingerprint recognition process, it is characterized in that: the present invention has newly created a kind of brand-new fingerprint characteristic coded format, and with fingerprint manufacturer, fingerprint characteristic data is enrolled in combinations such as the type of product facility in the lump.
2. require described brand-new fingerprint characteristic coded format according to right 1, it is characterized in that: fingerprint characteristic data after treatment promptly comprises the relevant information of vendor equipment, has also comprised the essential information of a part of original image.
3. require described fingerprint characteristic data according to right 2, it is characterized in that:, add the data head information content of 12 bytes in the forward part of characteristic with the form of prefix.
4. require the described data head information content according to right 3, it is characterized in that: the data head information content comprises, the length and width information of fingerprint image, the resolution of fingerprint image, the corresponding manufacturer's information of characteristic, and unique sign of product information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100878188A CN102737223A (en) | 2011-04-08 | 2011-04-08 | Cross-device matching fingerprint feature coding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100878188A CN102737223A (en) | 2011-04-08 | 2011-04-08 | Cross-device matching fingerprint feature coding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102737223A true CN102737223A (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100878188A Pending CN102737223A (en) | 2011-04-08 | 2011-04-08 | Cross-device matching fingerprint feature coding method |
Country Status (1)
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| CN (1) | CN102737223A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639517A (en) * | 2013-11-15 | 2015-05-20 | 阿里巴巴集团控股有限公司 | Method and device for verifying identities by aid of human body biological characteristics |
| CN108958125A (en) * | 2018-07-27 | 2018-12-07 | 上海与德科技有限公司 | Processing method, central control system and the vehicle of central control system |
| CN109886181A (en) * | 2019-02-18 | 2019-06-14 | Oppo广东移动通信有限公司 | Fingerprint algorithm determines method and relevant device |
| CN110175516A (en) * | 2019-04-17 | 2019-08-27 | 深圳绿米联创科技有限公司 | Biological characteristic model generating method, device, server and storage medium |
-
2011
- 2011-04-08 CN CN2011100878188A patent/CN102737223A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639517A (en) * | 2013-11-15 | 2015-05-20 | 阿里巴巴集团控股有限公司 | Method and device for verifying identities by aid of human body biological characteristics |
| CN108958125A (en) * | 2018-07-27 | 2018-12-07 | 上海与德科技有限公司 | Processing method, central control system and the vehicle of central control system |
| CN109886181A (en) * | 2019-02-18 | 2019-06-14 | Oppo广东移动通信有限公司 | Fingerprint algorithm determines method and relevant device |
| CN110175516A (en) * | 2019-04-17 | 2019-08-27 | 深圳绿米联创科技有限公司 | Biological characteristic model generating method, device, server and storage medium |
| CN110175516B (en) * | 2019-04-17 | 2021-12-07 | 深圳绿米联创科技有限公司 | Biological characteristic model generation method, device, server and storage medium |
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Legal Events
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| DD01 | Delivery of document by public notice |
Addressee: Liu Shi Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Shi Document name: Notification of Publication of the Application for Invention |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Shi Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Shi Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |