CN105469033B - fingerprint identification method, device and terminal device - Google Patents

Abstract

The invention discloses a fingerprint identification method, device and terminal equipment. Wherein, the fingerprint identification method includes: collecting a plurality of fingerprint images entered in advance, and forming a fingerprint template according to the plurality of fingerprint images, wherein, the plurality of fingerprint images are sorted according to the first matching order in the fingerprint template; , collecting a fingerprint image; matching the collected fingerprint image with multiple fingerprint images in the fingerprint template according to the first matching order, and judging whether the collected fingerprint image is recognized successfully according to the matching result. The fingerprint identification method of the embodiment of the present invention can improve the correct rate of fingerprint identification, and improve the security of fingerprint passwords while satisfying the convenience of users.

Description

Fingerprint identification method, device and terminal equipment

technical field

The invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification method, device and terminal equipment.

Background technique

Fingerprint, because of its lifelong invariance, uniqueness and convenience, has become a very important part of user identification. Now fingerprint identification technology has become the standard equipment of most mobile terminals. Fingerprint identification can be used to unlock and wake up mobile terminals. And payment and other functions, therefore, fingerprint recognition not only meets the convenience of users, but also puts forward better requirements for security.

At present, the user needs to register the fingerprint template first, for example, the user uses different positions of the finger to enter several fingerprint images, and then integrates these fingerprints to generate a complete fingerprint template, and then matches the collected fingerprints with the fingerprint template In this way, the identification of the user's fingerprint is realized. Specifically, the process of fingerprint identification is divided into feature extraction, saving feature data and comparing feature data. Firstly, the fingerprint image of the user is read by the fingerprint reading device, and then the original fingerprint image is preliminarily processed to make it clearer, and then the processed fingerprint image is matched with the fingerprint template to determine whether the fingerprint image is The match was successful. The time taken for the process from collecting the fingerprint image to judging whether the fingerprint image is successfully matched is called the fingerprint recognition time, and the fingerprint recognition time is divided into three time periods, namely feature extraction time period, feature data storage time period and comparison feature data time period Section, and the most important link is the link of comparing feature data, that is, the link of fingerprint matching, so how to improve the matching speed of fingerprint matching, so as to improve the speed of fingerprint recognition, is a problem that needs to be solved at present.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the first object of the present invention is to propose a fingerprint identification method. The method can improve the correct rate of fingerprint identification, and can improve the security of the fingerprint password while satisfying the user convenience.

The second object of the present invention is to provide a fingerprint identification device.

The third object of the present invention is to provide a terminal device.

In order to achieve the above purpose, the embodiment of the first aspect of the present invention proposes a fingerprint identification method, including: collecting a plurality of fingerprint images entered in advance, and forming a fingerprint template according to the plurality of fingerprint images, wherein the plurality of fingerprints The images are sorted in the fingerprint template according to the first matching order; when fingerprint identification is performed, the fingerprint image is collected; the fingerprint image collected is matched with a plurality of fingerprint images in the fingerprint template according to the first matching order , and judge whether the fingerprint image collected is successfully identified according to the matching result.

In the fingerprint recognition method of the embodiment of the present invention, a plurality of fingerprint images entered by the user are stored in the fingerprint template in a predetermined order, and the collected fingerprint images are matched with the fingerprint templates in the fingerprint template in a predetermined order, and then according to The matching result determines whether the fingerprint image is successfully identified, thereby improving the accuracy of fingerprint identification, and improving the security of the fingerprint password while satisfying the user's convenience.

In one embodiment of the present invention, after judging whether the collected fingerprint image is successfully identified according to the matching result, it further includes: according to the number of times of successful matching between the collected fingerprint image and the fingerprint image in the fingerprint template, The first matching sequence is adjusted to the second matching sequence.

In an embodiment of the present invention, adjusting the first matching sequence to the second matching sequence according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template specifically includes: recording the fingerprint The number of times of successful matching of the fingerprint image in the template; sort the fingerprint images in the fingerprint template in descending order of the number of successful matching, and use the sorted order as the second matching order.

In one embodiment of the present invention, if it is judged that two fingerprint images in the fingerprint template have the same number of successful matches, the fingerprint images with the same number of successful matches are further sorted according to the matching frequency.

In one embodiment of the present invention, the fingerprint identification method further includes: judging whether the number of times of the collected fingerprint image exceeds a first preset threshold, and if the number of times of collection exceeds the first preset threshold, then according to the Adjusting the first matching sequence to the second matching sequence according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template.

In one embodiment of the present invention, the fingerprint identification method further includes: recording the number of failed matches of the fingerprint image at the first position in the fingerprint template, if the matching of the fingerprint image at the first position fails If the number of times exceeds the second preset threshold, then the first matching order is adjusted to the second matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template.

In an embodiment of the present invention, matching the collected fingerprint image with the multiple fingerprint images in the fingerprint template according to the first matching order specifically includes: matching the collected fingerprint image with the fingerprint images in the fingerprint template in the first order The fingerprint image of a position is matched, and if the matching is successful, record the number of successful matchings corresponding to the collected fingerprint images, and judge whether the number of successful matchings exceeds a third preset threshold, and if it does not exceed the third preset threshold, then further match the collected fingerprint image with the fingerprint image at the second position in the fingerprint template; if it exceeds the third preset threshold, it is judged that the collected fingerprint image is recognized successfully.

In one embodiment of the present invention, matching the collected fingerprint image with the fingerprint image at the first position in the fingerprint template specifically includes: extracting a plurality of feature points of the collected fingerprint image, and combining the collected The multiple feature points of the fingerprint image are matched with the multiple feature points of the fingerprint image at the first position, if the collected fingerprint image matches the multiple feature points of the fingerprint image at the first position If the number of the plurality of feature points is greater than a fourth preset threshold, it is determined that the collected fingerprint image matches the fingerprint image at the first position.

The fingerprint recognition method of the embodiment of the present invention adjusts the sorting of the fingerprint images in the fingerprint template according to the number of times of successful fingerprint image matching in the fingerprint template, so that the recognition time of fingerprint recognition can be effectively shortened, and as the user performs fingerprint recognition As the number of times increases, the allocation of the matching frequencies of the fingerprint images in the fingerprint template will be clearer, and the sorting of the fingerprint images in the fingerprint template will be more scientific, so the identification time of fingerprint identification will be faster.

In order to achieve the above purpose, the embodiment of the second aspect of the present invention proposes a fingerprint recognition device, including: a first collection module, which collects a plurality of pre-registered fingerprint images; a generation module, which is used to form A fingerprint template, wherein the plurality of fingerprint images are sorted in the first matching order in the fingerprint template; the second collection module is used to collect fingerprint images when performing fingerprint identification; the matching module is used to collect the fingerprint images The fingerprint image is matched with the multiple fingerprint images in the fingerprint template according to the first matching order, and it is judged according to the matching result whether the fingerprint image collected is successfully identified.

The fingerprint identification device of the embodiment of the present invention saves the multiple fingerprint images entered by the user in the fingerprint template in a predetermined order according to the predetermined order, and matches the collected fingerprint images with the fingerprint templates in the fingerprint template in a predetermined order, and then according to The matching result determines whether the fingerprint image is successfully identified, thereby improving the accuracy of fingerprint identification, and improving the security of the fingerprint password while satisfying the user's convenience.

In one embodiment of the present invention, the fingerprint identification device further includes: an adjustment module, configured to adjust the first matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template. Adjusted to the second matching order.

In one embodiment of the present invention, the adjustment module is specifically configured to: record the number of successful matches of the fingerprint image in the fingerprint template; The fingerprint images in are sorted, and the sorted order is used as the second matching order.

In an embodiment of the present invention, the adjustment module is further configured to: if it is judged that the number of successful matches of the two fingerprint images in the fingerprint template is the same, the fingerprints with the same number of successful matches are further selected according to the matching frequency. Images are sorted.

In one embodiment of the present invention, the fingerprint recognition device further includes: a first judging module, configured to judge whether the number of times of fingerprint images collected exceeds a first preset threshold; preset threshold, the adjustment module adjusts the first matching order to the second matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template.

In one embodiment of the present invention, the fingerprint identification device further includes: a second judging module, configured to record the number of matching failures of the fingerprint image at the first position in the fingerprint template, if it is judged that the fingerprint image at the first position If the number of failed matches of the fingerprint image at the location exceeds the second preset threshold, the adjustment module adjusts the first matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template. for the second matching order.

In one embodiment of the present invention, the matching module is specifically configured to: match the collected fingerprint image with the fingerprint image at the first position in the fingerprint template, and if the matching is successful, record the collected fingerprint image corresponding number of times of successful matching, and judge whether the number of times of successful matching exceeds the third preset threshold; The fingerprint image at the second position is matched; if it exceeds the third preset threshold, it is judged that the fingerprint image collected is successfully identified.

In an embodiment of the present invention, the matching module is further configured to: extract a plurality of feature points of the collected fingerprint image, and compare the plurality of feature points of the collected fingerprint image with the Match the multiple feature points of the fingerprint image, if the number of the multiple feature points of the collected fingerprint image that matches the multiple feature points of the fingerprint image at the first position is greater than the fourth preset threshold, then Judging that the collected fingerprint image matches the fingerprint image at the first position.

The fingerprint recognition device of the embodiment of the present invention adjusts the sorting of the fingerprint images in the fingerprint template according to the number of successful matches of the fingerprint images in the fingerprint template, so that the recognition time of fingerprint recognition can be effectively shortened, and as the user performs fingerprint recognition As the number of times increases, the allocation of the matching frequencies of the fingerprint images in the fingerprint template will be clearer, and the sorting of the fingerprint images in the fingerprint template will be more scientific, so the identification time of fingerprint identification will be faster.

To achieve the above purpose, the embodiment of the third aspect of the present invention provides a terminal device.

The terminal device according to the embodiment of the present invention saves the multiple fingerprint images entered by the user in the fingerprint template in a predetermined order, and matches the collected fingerprint images with the fingerprint templates in the fingerprint template in a predetermined order, and then according to the matching result Judging whether the fingerprint image is successfully recognized, thereby improving the accuracy of fingerprint recognition, and improving the security of fingerprint passwords while satisfying the convenience of users

Furthermore, the sorting of the fingerprint image in the fingerprint template is adjusted according to the number of times of successful matching of the fingerprint image in the fingerprint template, thereby effectively shortening the recognition time of fingerprint recognition, and as the number of times of fingerprint recognition by the user increases, the fingerprints in the fingerprint template The clearer the distribution of the matching frequency of the image is, the more scientific the sorting of the fingerprint images in the fingerprint template is, and therefore the faster the recognition time of the fingerprint recognition is.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a flowchart of a fingerprint recognition method according to an embodiment of the present invention.

Fig. 2 is a flowchart of a fingerprint recognition method according to a specific embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a fingerprint recognition device according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a fingerprint recognition device according to a specific embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments or portions of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.

FIG. 1 is a flowchart of a fingerprint identification method according to an embodiment of the present invention.

As shown in Figure 1, the identification methods of fingerprints include:

S101. Collect a plurality of pre-registered fingerprint images, and form a fingerprint template according to the plurality of fingerprint images, wherein the plurality of fingerprint images are sorted in a first matching order in the fingerprint template.

Specifically, when a user registers a fingerprint, a fingerprint reading device, such as an optical fingerprint collector, a thermal sensor, a radio frequency sensor, etc., may be used to collect multiple fingerprint images entered by the user, and then generate multiple fingerprint images based on the multiple fingerprint images entered by the user. fingerprint templates. That is to say, the present invention does not integrate multiple fingerprint images entered by the user into a fingerprint template, but sorts the multiple fingerprint images entered by the user in the fingerprint template according to the first matching order. Wherein, the number of fingerprint images in the fingerprint template can be preset in the terminal device, preferably 20, some of these fingerprint images are the fingerprint area of the central part of the user's finger, and some are the fingerprint area around the user's finger . Furthermore, these fingerprint images are added to the fingerprint template in a predetermined order, for example, 20 fingerprint images are numbered according to 1-20, and the position of the fingerprint image in the fingerprint template is determined according to the number.

S102. Collect a fingerprint image when performing fingerprint identification.

Specifically, when the user performs fingerprint identification on the terminal device, such as unlocking the screen by using the fingerprint, or performing payment by using the fingerprint, the fingerprint image currently input by the user is collected by the fingerprint reading device.

S103, matching the collected fingerprint image with the multiple fingerprint images in the fingerprint template according to the first matching order, and judging whether the collected fingerprint image is recognized successfully according to the matching result.

In one embodiment of the present invention, the fingerprint image collected is matched with the fingerprint image at the first position in the fingerprint template, and if the matching is successful, the number of successful matches corresponding to the collected fingerprint image is recorded, and the number of successful matches is judged. Whether the number of times exceeds the third preset threshold, if it does not exceed the third preset threshold, then further match the collected fingerprint image with the fingerprint image at the second position in the fingerprint template; if it exceeds the third preset threshold, then judge whether to collect The fingerprint image recognition is successful. Specifically, the collected fingerprint image is matched with each fingerprint template in the fingerprint template according to the predetermined first matching sequence, if the number of fingerprint images in the fingerprint template matched with the collected fingerprint image exceeds the preset number , that is, the number of successful matches of the collected fingerprint images exceeds the third preset threshold, and it is judged that the collected fingerprint images are recognized successfully. For example, the collected fingerprint image is now matched with the fingerprint image at the forefront of the first matching sequence in the fingerprint template. If the match is successful, it is judged whether the number of successful matches exceeds the third preset threshold, and if it does not exceed the third preset threshold, then further match the collected fingerprint image with the fingerprint image that is ranked second in the first matching sequence in the fingerprint template, if the matching is successful, then judge whether the number of times of successful matching exceeds the third preset threshold, if If it exceeds the third preset threshold, it is judged that the collected fingerprint image has been recognized successfully. If it does not exceed the third preset threshold, the collected fingerprint image is further compared with the fingerprint image that is ranked third in the first matching sequence in the fingerprint template. Matching, and so on, until the number of successful matching exceeds the third preset threshold, then it is judged that the collected fingerprint image is recognized successfully.

More specifically, the specific method for matching the collected fingerprint image with the fingerprint image at the first position in the fingerprint template is to extract a plurality of feature points of the collected fingerprint image, and combine the multiple feature points of the collected fingerprint image with Multiple feature points of the fingerprint image at the first position are matched, if the number of multiple feature points of the collected fingerprint image matched with the multiple feature points of the fingerprint image at the first position is greater than the fourth preset threshold, then It is judged that the collected fingerprint image matches the fingerprint image at the first position.

Furthermore, after judging that the collected fingerprint recognition is successful, functions such as screen unlocking or continuing payment can be realized, and when it is judged that the collected fingerprint recognition is unsuccessful, no response is made.

In the fingerprint recognition method of the embodiment of the present invention, a plurality of fingerprint images entered by the user are stored in the fingerprint template in a predetermined order, and the collected fingerprint images are matched with the fingerprint templates in the fingerprint template in a predetermined order, and then according to The matching result determines whether the fingerprint image is successfully identified, thereby improving the accuracy of fingerprint identification, and improving the security of the fingerprint password while satisfying the user's convenience.

Fig. 2 is a flowchart of a fingerprint recognition method according to a specific embodiment of the present invention.

As shown in Figure 2, the identification methods of fingerprints include:

S201. Collect a plurality of pre-registered fingerprint images, and form a fingerprint template according to the plurality of fingerprint images, wherein the plurality of fingerprint images are sorted in a first matching order in the fingerprint template.

S202. Collect a fingerprint image when performing fingerprint identification.

S203. Match the collected fingerprint image with the multiple fingerprint images in the fingerprint template according to the first matching order, and judge whether the collected fingerprint image is recognized successfully according to the matching result.

S204. Adjust the first matching order to the second matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template.

In one embodiment of the present invention, the number of times of successful matching of the fingerprint image in the fingerprint template is recorded, and the fingerprint images in the fingerprint template are sorted according to the number of times of successful matching from high to low, and the sorted order is used as Second matching order. Specifically, since the fingerprint images are arranged in the pre-first matching order in the fingerprint template, it is possible that the fingerprint images around the user's finger are arranged in the front of the fingerprint template, and the user's usage habit is often to use the middle part of the finger. Therefore, the matching degree between the fingerprint image collected during the matching process and the fingerprint image at the front position in the fingerprint template is often very low, resulting in a long matching time. Therefore, in the present invention, the arrangement order of the fingerprint images in the fingerprint template is adjusted in combination with the user's usage habits, so as to achieve the purpose of shortening the matching time.

Specifically, the number of times each fingerprint image in the fingerprint template is successfully matched is stored in the terminal device. When matching the collected fingerprint image with the fingerprint template, when the collected fingerprint image matches a fingerprint in the fingerprint template sequence When the image is matched, the number of successful matches of the fingerprint image is increased by one. Furthermore, the fingerprint images in the fingerprint template are reordered according to the number of times of successful matching of each fingerprint image, and the fingerprint images with the highest number of successful matching are placed in the front position of the fingerprint template. In other words, arrange the fingerprint image with the highest number of successful matches at the front position in the fingerprint template, arrange the fingerprint image with the second highest number of successful matches at the second front position in the fingerprint template, and then generate A fingerprint template that matches sequentially arranged fingerprint images. Furthermore, when matching the collected fingerprint images with the fingerprint templates, the fingerprint images with the highest number of matching successes can be matched first, so as to quickly identify the collected fingerprint images.

It should be understood that after the user performs fingerprint identification each time, the data of this fingerprint identification is recorded, that is, the number of matching times of each fingerprint image in the fingerprint template. The order of the fingerprint images is adjusted, so as the number of fingerprint identifications performed by the user increases, the sorting of the fingerprint images in the fingerprint template is also more ideal, and the fingerprint identification speed is faster.

In an embodiment of the present invention, there may be multiple conditions that trigger the reordering of the fingerprint images in the fingerprint template.

For example, it is judged whether the collection times of the collected fingerprint images exceeds the first preset threshold, if the collection times exceeds the first preset threshold, then the first matching The order is adjusted to the second matching order. Specifically, record the number of fingerprint images collected when the user performs fingerprint identification, and determine whether the number of fingerprint images collected exceeds a first preset threshold, for example, 50 times. If it exceeds the first preset threshold, triggering the fingerprint template. The adjustment of the first matching order of the fingerprint images is to adjust the order of the fingerprint images in the fingerprint template.

Or, for example, recording the number of failed matches of the fingerprint image at the first position in the fingerprint template, if the number of failed matches of the fingerprint image at the first position exceeds the second preset threshold, then according to the collected fingerprint image and the fingerprint template The number of successful matches of the fingerprint images in the first matching sequence is adjusted to the second matching sequence. Specifically, when performing fingerprint identification, the collected fingerprint image must first be matched with the fingerprint image at the top of the fingerprint template. If the collected fingerprint image fails to match with the top fingerprint image, record the collected fingerprint The number of matching failures between the image and the fingerprint image at the top of the list. If the number of matching failures exceeds the second preset threshold, it means that the success rate of matching the fingerprint image with the collected fingerprint image is not high, and its sorting position should be adjusted. To a relatively later position, at this time, the adjustment of the first matching order of the fingerprint images in the fingerprint template is triggered, that is, the order of the fingerprint images in the fingerprint template is adjusted.

The fingerprint recognition method of the embodiment of the present invention adjusts the sorting of the fingerprint images in the fingerprint template according to the number of times of successful fingerprint image matching in the fingerprint template, so that the recognition time of fingerprint recognition can be effectively shortened, and as the user performs fingerprint recognition As the number of times increases, the allocation of the matching frequencies of the fingerprint images in the fingerprint template will be clearer, and the sorting of the fingerprint images in the fingerprint template will be more scientific, so the identification time of fingerprint identification will be faster.

In order to realize the above embodiments, the present invention also proposes a fingerprint identification device.

Fig. 3 is a schematic structural diagram of a fingerprint recognition device according to an embodiment of the present invention.

As shown in FIG. 3 , the fingerprint identification device includes: a first collection module 301 , a generation module 302 , a second collection module 303 and a matching module 304 .

Wherein, the first collecting module 301 collects a plurality of pre-registered fingerprint images. The generating module 302 is configured to form a fingerprint template according to multiple fingerprint images, wherein the multiple fingerprint images are sorted in the fingerprint template according to a first matching order. Specifically, when a user registers a fingerprint, the first collection module 301 collects multiple fingerprint images entered by the user, and then the generation module 302 generates multiple fingerprint templates according to the multiple fingerprint images entered by the user. That is to say, the present invention does not integrate multiple fingerprint images entered by the user into a fingerprint template, but sorts the multiple fingerprint images entered by the user in the fingerprint template according to the first matching order. Wherein, the number of fingerprint images in the fingerprint template can be preset in the terminal device, preferably 20, some of these fingerprint images are the fingerprint area of the central part of the user's finger, and some are the fingerprint area around the user's finger . Furthermore, these fingerprint images are added to the fingerprint template in a predetermined order, for example, 20 fingerprint images are numbered according to 1-20, and the position of the fingerprint image in the fingerprint template is determined according to the number.

The second collecting module 303 is used for collecting fingerprint images during fingerprint identification. Specifically, when the user performs fingerprint recognition on the terminal device, such as using the fingerprint to unlock the screen, or use the fingerprint to make payment, the second collection module 303 collects the fingerprint image currently input by the user.

The matching module 304 is used to match the collected fingerprint image with multiple fingerprint images in the fingerprint template according to the first matching order, and judge whether the collected fingerprint image is recognized successfully according to the matching result.

In one embodiment of the present invention, the matching module 304 matches the collected fingerprint image with the fingerprint image at the first position in the fingerprint template, and if the matching is successful, records the number of matching successes corresponding to the collected fingerprint image, and judges Whether the number of times of successful matching exceeds the third preset threshold, if it does not exceed the third preset threshold, then further match the collected fingerprint image with the fingerprint image at the second position in the fingerprint template; if it exceeds the third preset threshold, Then it is judged that the collected fingerprint image is recognized successfully. Specifically, the matching module 304 sequentially matches the collected fingerprint image with each fingerprint template in the fingerprint template according to a predetermined first matching sequence, if the number of fingerprint images in the fingerprint templates matched with the collected fingerprint image exceeds If the preset number, that is, the number of successful matches of the collected fingerprint images exceeds the third preset threshold, it is judged that the collected fingerprint images are recognized successfully. For example, the matching module 304 matches the collected fingerprint image with the fingerprint image at the forefront of the first matching sequence in the fingerprint template, if the matching is successful, then judge whether the number of successful matching exceeds the third preset threshold, if not Exceeding the third preset threshold, then further match the collected fingerprint image with the fingerprint image that ranks second in front of the first matching sequence in the fingerprint template, and if the matching is successful, then judge whether the number of successful matching exceeds the third preset Threshold, if it exceeds the third preset threshold, then it is judged that the collected fingerprint image is recognized successfully, if it does not exceed the third preset threshold, then further compare the collected fingerprint image with the fingerprint template that is ranked third in the first matching sequence The fingerprint images are matched, and so on, until the number of times of judging that the matching is successful exceeds the third preset threshold, then it is judged that the collected fingerprint images are recognized successfully. Furthermore, after the matching module 304 judges that the collected fingerprint recognition is successful, functions such as unlocking the screen or continuing payment can be realized, and no response is made when it is judged that the collected fingerprint recognition is unsuccessful.

More specifically, the specific method for matching the collected fingerprint image with the fingerprint image at the first position in the fingerprint template is that the matching module 304 extracts a plurality of feature points of the collected fingerprint image, and combines the multiple feature points of the collected fingerprint image. The feature points are matched with the multiple feature points of the fingerprint image at the first position, if the number of multiple feature points of the collected fingerprint image matched with the multiple feature points of the fingerprint image at the first position is greater than the fourth preset threshold, it is determined that the collected fingerprint image matches the fingerprint image at the first position.

The fingerprint identification device of the embodiment of the present invention saves the multiple fingerprint images entered by the user in the fingerprint template in a predetermined order according to the predetermined order, and matches the collected fingerprint images with the fingerprint templates in the fingerprint template in a predetermined order, and then according to The matching result determines whether the fingerprint image is successfully identified, thereby improving the accuracy of fingerprint identification, and improving the security of the fingerprint password while satisfying the user's convenience.

Fig. 4 is a schematic structural diagram of a fingerprint recognition device according to a specific embodiment of the present invention.

As shown in FIG. 4 , the fingerprint identification device includes: a first acquisition module 301 , a generation module 302 , a second acquisition module 303 , a matching module 304 , an adjustment module 305 , a first judgment module 306 and a second judgment module 307 .

Wherein, the adjustment module 305 is configured to adjust the first matching order to the second matching order according to the number of successful matches between the collected fingerprint image and the fingerprint image in the fingerprint template. Wherein, the adjustment module 305 records the number of times of successful matching of the fingerprint image in the fingerprint template, and sorts the fingerprint images in the fingerprint template according to the descending order of the number of successful matching times, and uses the sorted order as the second matching order . If it is determined that two fingerprint images in the fingerprint template have the same number of successful matches, the adjustment module 305 further sorts the fingerprint images with the same number of successful matches according to the matching frequency. Specifically, the number of times each fingerprint image in the fingerprint template is successfully matched is stored in the terminal device. When the matching module 304 matches the collected fingerprint image with the fingerprint template, when the collected fingerprint image and the fingerprint template sequence When a fingerprint image of the corresponding fingerprint image is matched, the number of successful matches of the fingerprint image is increased by one. Furthermore, the adjustment module 305 reorders the fingerprint images in the fingerprint template according to the number of times of successful matching of each fingerprint image, and puts the fingerprint image with the highest number of successful matching in the front position of the fingerprint template. In other words, the adjustment module 305 arranges the fingerprint image with the highest number of successful matches in the front position in the fingerprint template, and arranges the fingerprint image with the second highest number of successful matches in the second front position in the fingerprint template, thereby generating Fingerprint templates of fingerprint images arranged in the second matching order. Furthermore, when the matching module 304 matches the collected fingerprint images with the fingerprint template, it can firstly match the fingerprint images with the highest number of matching successes so as to quickly identify the collected fingerprint images.

In an embodiment of the present invention, there may be multiple conditions that trigger the adjustment module 305 to reorder the fingerprint images in the fingerprint template. Therefore, the fingerprint recognition device may further include a first judging module 306 and a second judging module 307 .

Wherein, the first judging module 306 is used for judging whether the collection times of the collected fingerprint images exceeds the first preset threshold, if the collection times exceeds the first preset threshold, then the adjustment module adjusts the fingerprint image according to the collected fingerprint image and the fingerprint image in the fingerprint template The number of successful matches of the first match order is adjusted to the second match order. Specifically, the first judging module 306 records the number of fingerprint images collected when the user performs fingerprint identification, and judges whether the number of fingerprint images collected exceeds a first preset threshold, for example, 50 times. If it exceeds the first preset threshold, Then the first judging module 306 judges and triggers the adjusting module 305 to adjust the first matching order of the fingerprint images in the fingerprint template, that is, the adjusting module 305 adjusts the sorting of the fingerprint images in the fingerprint template.

The second judging module 307 is used to record the number of matching failures of the fingerprint image at the first position in the fingerprint template. The first matching sequence is adjusted to the second matching sequence according to the number of successful matches between the fingerprint image in the fingerprint image and the fingerprint image in the fingerprint template. Specifically, when the matching module 304 performs fingerprint identification, the collected fingerprint image must first be matched with the fingerprint image at the top of the fingerprint template. If the collected fingerprint image fails to match with the top fingerprint image, then The second judging module 307 records the number of failed matches between the collected fingerprint image and the fingerprint image in the front of the list. If the number of matching failures exceeds a second preset threshold, it indicates that the fingerprint image does not have a high matching success rate with the collected fingerprint image. High, the position of its sorting should be adjusted to a relatively late position. At this time, the second judgment module 307 judges and triggers the adjustment module 305 to adjust the first matching order of the fingerprint image in the fingerprint template, that is, the adjustment of the fingerprint image in the fingerprint template. Sort to adjust.

The fingerprint recognition device of the embodiment of the present invention adjusts the sorting of the fingerprint images in the fingerprint template according to the number of successful matches of the fingerprint images in the fingerprint template, so that the recognition time of fingerprint recognition can be effectively shortened, and as the user performs fingerprint recognition As the number of times increases, the allocation of the matching frequencies of the fingerprint images in the fingerprint template will be clearer, and the sorting of the fingerprint images in the fingerprint template will be more scientific, so the identification time of fingerprint identification will be faster.

In order to realize the above embodiments, the present invention also proposes a terminal device, including the fingerprint identification device according to the embodiments of the present invention.

The terminal device according to the embodiment of the present invention saves the multiple fingerprint images entered by the user in the fingerprint template in a predetermined order, and matches the collected fingerprint images with the fingerprint templates in the fingerprint template in a predetermined order, and then according to the matching result By judging whether the fingerprint image is successfully identified, the correct rate of fingerprint identification can be improved, and the security of the fingerprint password can be improved while satisfying user convenience.

Furthermore, the sorting of the fingerprint image in the fingerprint template is adjusted according to the number of times of successful matching of the fingerprint image in the fingerprint template, thereby effectively shortening the recognition time of fingerprint recognition, and as the number of times of fingerprint recognition by the user increases, the fingerprints in the fingerprint template The clearer the distribution of the matching frequency of the image is, the more scientific the sorting of the fingerprint images in the fingerprint template is, and therefore the faster the recognition time of the fingerprint recognition is.

It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGAs), Field Programmable Gate Arrays (FPGAs), etc.

In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a Integral; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (11)

1. a kind of fingerprint identification method, it is characterised in that comprise the following steps：

Multiple fingerprint images of advance typing are gathered, and fingerprint template is formed according to the multiple fingerprint image, wherein, it is described more A fingerprint image is ranked up in the fingerprint template by the first matching order；

When carrying out fingerprint recognition, fingerprint image is gathered；

By multiple fingerprint images in the fingerprint image of collection and the fingerprint template according to first matching order progress Match somebody with somebody, and judge whether the fingerprint image of the collection identifies success according to matching result, wherein, by the fingerprint image of collection and institute State the fingerprint image in first position in fingerprint template to be matched, if successful match, record the fingerprint image of the collection As the number of corresponding successful match, and whether the number of the successful match is judged more than the 3rd predetermined threshold value, if not less than 3rd predetermined threshold value, then will further be in the finger of the second place in the fingerprint image of the collection and the fingerprint template Print image is matched, until judging that the number of the successful match exceedes the 3rd predetermined threshold value, then judges the collection Fingerprint recognition success；

According to the number of the successful match of the fingerprint image in the fingerprint image of the collection and the fingerprint template by described the One matching order is adjusted to the second matching order, wherein, after fingerprint recognition is carried out every time, record fingerprint in the fingerprint template The number of the successful match of image, according to the successful match number order from high to low in the fingerprint template Fingerprint image is ranked up, using the order after sequence as second matching order, wherein by the fingerprint image of the collection When picture is matched with the fingerprint template, when fingerprint image and the fingerprint in the fingerprint template sequence of the collection During images match, by the number increase of the successful match of the fingerprint image once.

2. fingerprint identification method as claimed in claim 1, it is characterised in that further include：

If judging, the number of the successful match of two fingerprint images in the fingerprint template is identical, further according to matching frequency The rate fingerprint image identical to the successful match number is ranked up.

3. such as claim 1-2 any one of them fingerprint identification methods, it is characterised in that further include：

Whether the times of collection of the fingerprint image of the collection is judged more than the first predetermined threshold value, if the times of collection is more than The number of one predetermined threshold value, the then successful match of the fingerprint image in the fingerprint image of the collection and the fingerprint template First matching order is adjusted to the second matching order.

4. such as claim 1-2 any one of them fingerprint identification methods, it is characterised in that further include：

The fingerprint image number that it fails to match that first position is in the fingerprint template is recorded, if described be in first The fingerprint image the put number that it fails to match is more than the second predetermined threshold value, then according to the fingerprint image of the collection and the finger First matching order is adjusted to the second matching order by the number of the successful match of the fingerprint image in line template.

5. fingerprint identification method as claimed in claim 1, it is characterised in that by the fingerprint image of collection and the fingerprint template In the fingerprint image in first position carry out matching and specifically include：

Extract multiple characteristic points of the fingerprint image of the collection, and by multiple characteristic points of the fingerprint image of the collection and institute Multiple characteristic points of fingerprint image in first position are stated to be matched, if with the fingerprint image in first position The quantity of multiple characteristic points of the fingerprint image of the collection of multiple Feature Points Matchings is more than the 4th predetermined threshold value, then judges institute The fingerprint image for stating collection is matched with the fingerprint image in first position.

A kind of 6. fingerprint identification device, it is characterised in that including：

First acquisition module, gathers multiple fingerprint images of advance typing；

Generation module, for forming fingerprint template according to the multiple fingerprint image, wherein, the multiple fingerprint image is described It is ranked up in fingerprint template by the first matching order；

Second acquisition module, for when carrying out fingerprint recognition, gathering fingerprint image；

Matching module, for by multiple fingerprint images in the fingerprint image of collection and the fingerprint template according to described first Sequence ligand is matched, and judges whether the fingerprint image of the collection identifies success according to matching result, wherein, the matching Module by the fingerprint image of collection with the fingerprint template be in first position fingerprint image matched, if matching into Work(, then record the number of the corresponding successful match of fingerprint image of the collection, and judge the successful match number whether More than the 3rd predetermined threshold value, if not less than the 3rd predetermined threshold value, further by the fingerprint image of the collection with it is described Matched in fingerprint template in the fingerprint image of the second place, until judging the number of the successful match more than described the Three predetermined threshold values, then judge the Fingerprint recognition success of the collection；

Module is adjusted, for the fingerprint image according to the collection and the successful match of the fingerprint image in the fingerprint template First matching order is adjusted to the second matching order by number, wherein, the adjustment module is used to carry out fingerprint every time After identification, the number of the successful match of fingerprint image in the fingerprint template is recorded, according to the number of the successful match by height To low order to fingerprint image in the fingerprint template be ranked up, using the order after sequence as the described second matching Sequentially, wherein when the fingerprint image of the collection is matched with the fingerprint template, when the fingerprint image of the collection When being matched with a fingerprint image in the fingerprint template sequence, the number of the successful match of the fingerprint image is increased by one It is secondary.

7. fingerprint identification device as claimed in claim 6, it is characterised in that the adjustment module is additionally operable to：

If judging, the number of the successful match of two fingerprint images in the fingerprint template is identical, further according to matching frequency The rate fingerprint image identical to the successful match number is ranked up.

8. such as claim 6-7 any one of them fingerprint identification devices, it is characterised in that further include：

First judgment module, for judge the collection fingerprint image times of collection whether more than the first predetermined threshold value, if The times of collection is more than the first predetermined threshold value, then fingerprint image and the fingerprint mould of the adjustment module according to the collection First matching order is adjusted to the second matching order by the number of the successful match of the fingerprint image in plate.

9. such as claim 6-7 any one of them fingerprint identification devices, it is characterised in that further include：

Second judgment module, for recording time that it fails to match of the fingerprint image in first position in the fingerprint template Number, if judging the fingerprint image number that it fails to match in first position more than the second predetermined threshold value, the tune Mould preparation root tuber is according to the fingerprint image of the collection and the number of the successful match of the fingerprint image in the fingerprint template by described in First matching order is adjusted to the second matching order.

10. fingerprint identification device as claimed in claim 6, it is characterised in that the matching module is additionally operable to：

Extract multiple characteristic points of the fingerprint image of the collection, and by multiple characteristic points of the fingerprint image of the collection and institute Multiple characteristic points of fingerprint image in first position are stated to be matched, if with the fingerprint image in first position The quantity of multiple characteristic points of the fingerprint image of the collection of multiple Feature Points Matchings is more than the 4th predetermined threshold value, then judges institute The fingerprint image for stating collection is matched with the fingerprint image in first position.

11. a kind of terminal device, it is characterised in that including such as claim 6-10 any one of them fingerprint identification device.