WO2020113429A1 - 指纹注册方法、终端和计算机可读存储介质 - Google Patents

指纹注册方法、终端和计算机可读存储介质 Download PDF

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Publication number
WO2020113429A1
WO2020113429A1 PCT/CN2018/119208 CN2018119208W WO2020113429A1 WO 2020113429 A1 WO2020113429 A1 WO 2020113429A1 CN 2018119208 W CN2018119208 W CN 2018119208W WO 2020113429 A1 WO2020113429 A1 WO 2020113429A1
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Prior art keywords
fingerprint
sliding
image
fingerprint image
preset
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Application number
PCT/CN2018/119208
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English (en)
French (fr)
Inventor
吴东承
Original Assignee
深圳市汇顶科技股份有限公司
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Publication date
Application filed by 深圳市汇顶科技股份有限公司 filed Critical 深圳市汇顶科技股份有限公司
Priority to PCT/CN2018/119208 priority Critical patent/WO2020113429A1/zh
Priority to CN201880002576.8A priority patent/CN109690563B/zh
Publication of WO2020113429A1 publication Critical patent/WO2020113429A1/zh
Priority to US16/903,276 priority patent/US11315365B2/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1365—Matching; Classification
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/50—Maintenance of biometric data or enrolment thereof

Definitions

  • the present application relates to the technical field of fingerprint recognition, and in particular to a fingerprint registration method, a terminal, and a computer-readable storage medium.
  • the purpose of some embodiments of the present application is to provide a fingerprint registration method.
  • the terminal and the computer-readable storage medium enable users to register fingerprints in a sliding manner without pressing more times, which improves the user experience and is beneficial to upgrade Identify the experience.
  • An embodiment of the present application provides a fingerprint registration method, including: acquiring a fingerprint image collected during a user sliding a finger; filtering the acquired fingerprint image; registering a fingerprint image that satisfies preset filtering conditions in Fingerprint template.
  • An embodiment of the present application further provides a terminal, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are processed by at least one To execute at least one processor to execute the fingerprint registration method described above.
  • Embodiments of the present application also provide a computer-readable storage medium that stores a computer program, and when the computer program is executed by a processor, the fingerprint registration method described above is implemented.
  • the embodiment of the present application collects fingerprint images by sliding the user's finger, and does not require the user to press a large number of times.
  • a certain number of fingerprint images can be collected by sliding the finger once, which improves the user's experience and at the same time It also increases the speed of registration.
  • the fingerprint images that do not meet the screening conditions during the sliding process are not registered, there is more registration space on the fingerprint template to register the fingerprint images that meet the screening conditions, which is conducive to improving the accuracy of fingerprint recognition and improving the recognition experience.
  • the process of a user sliding a finger is specifically: the process of the user sliding a finger multiple times; the screening of the acquired fingerprint image is specifically: after each slide is completed, the current The fingerprint image collected during the sliding process is filtered; the registration of the fingerprint image that meets the preset filtering conditions in the fingerprint template is specifically: after each sliding, the process of sliding the finger during the current process is satisfied
  • the fingerprint images of the set filter conditions are registered in the fingerprint template. Swiping your finger multiple times is good for collecting multi-faceted, multi-angle, and large numbers of fingerprint images.
  • the method further includes: determining whether the number of times the user slides the finger reaches the preset number of times; if not When the preset number of times is reached, a prompt message is issued to prompt the user to continue sliding the finger.
  • the prompt information at least includes: a sliding area of the next sliding finger; wherein, the sliding area of the next sliding finger is different from the sliding area of the user's previous sliding finger, which is conducive to acquisition
  • the fingerprint image that is not repeated in the previous sliding process improves the effectiveness of the sliding.
  • the method before filtering the fingerprint images collected during the sliding process, the method further includes: detecting whether the sliding process meets a preset requirement; wherein, the preset requirement is: The overlapping area of the sliding area of the sliding and the sliding area of any previous sliding finger is smaller than the preset area; if the current sliding process meets the preset requirements, the fingerprint collected during the sliding process is executed Screen the images; if the sliding process does not meet the preset requirements, discard the fingerprint images collected during the sliding process. It is helpful to record the effective number of slides, perform effective screening, discard the fingerprint images collected during the sliding process that does not meet the preset requirements, and also help avoid unnecessary screening.
  • registering the fingerprint image that satisfies the preset filtering conditions during the sliding of the finger in the fingerprint template includes: detecting whether the fingerprint image registered on the fingerprint template satisfies the preset condition A first fingerprint image; when there is a first fingerprint image that satisfies the preset condition, delete the first fingerprint image and register the second fingerprint image in the fingerprint template; wherein, the second fingerprint image is this time.
  • the fingerprint image that meets the screening conditions during the sliding of the finger is helpful for registering a new fingerprint image in the fingerprint template, and can dynamically adjust the registered fingerprint image in the fingerprint template to ensure that there is enough space in the fingerprint template Register a new fingerprint image.
  • the preset condition is specifically: the overlapping area of the first fingerprint image and the second fingerprint image is greater than a preset threshold and the image quality of the second fingerprint image exceeds the first fingerprint
  • the image quality of the image is conducive to ensuring that there are constantly better fingerprint images to replace the fingerprint images registered in the fingerprint template, so as to ensure the overall image quality of the fingerprint images registered on the fingerprint template.
  • the fingerprint template before detecting whether there is a first fingerprint image that satisfies a preset condition among the fingerprint images registered on the fingerprint template, it further includes: detecting whether the storage space for storing the fingerprint template is full ; If the storage space is full, perform the detection of whether the first fingerprint image that satisfies the preset condition exists in the fingerprint image registered on the fingerprint template. .
  • the registration space of the fingerprint template is full, the dynamic adjustment of the fingerprint image registered on the fingerprint template is helpful to improve the effectiveness of dynamic adjustment, so that even if the registration space is full, it can be adjusted dynamically. A better fingerprint image can be registered in the fingerprint template.
  • the invalid fingerprint image is deleted, and the second fingerprint image is registered in all In the fingerprint template; among them, the invalid fingerprint image is: the fingerprint image with the least effective fingerprint information among the registered fingerprint images, which provides enough registration space for the fingerprint image to be registered.
  • filtering the acquired fingerprint image specifically includes: determining the image quality and image area of the fingerprint image of the current frame; if the image quality of the fingerprint image of the current frame meets a preset quality standard and The image area of the fingerprint image of the current frame conforms to a preset area standard, then calculate the overlap rate between the fingerprint image of the current frame and the fingerprint image of the previous frame; if the overlap rate is less than the preset overlap rate threshold, Then, the fingerprint image of the current frame is used as the selected fingerprint image that satisfies the screening conditions.
  • Screening the fingerprint images that meet the quality standards and area standards for the overlap rate is helpful to remove fingerprint images with a high overlap rate, reduce the overlap rate of the selected fingerprint images, and to a certain extent, reduce the registration space for fingerprint templates Occupation is conducive to register more and more effective fingerprint images.
  • FIG. 1 is a flowchart of a fingerprint registration method according to the first embodiment of the present application.
  • FIG. 2 is a schematic diagram of excluding too many overlapping regions in the fingerprint registration method according to the first embodiment of the present application;
  • step 102 in the fingerprint registration method in the first embodiment of the present application
  • FIG. 4 is a flowchart of a fingerprint registration method according to the second embodiment of the present application.
  • FIG. 5 is a flowchart of a fingerprint registration method according to the third embodiment of the present application.
  • FIG. 6 is a flowchart of a fingerprint registration method according to a fourth embodiment of the present application.
  • FIG. 7 is a schematic diagram of an overlapping area of two sliding areas in the fingerprint registration method according to the fourth embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal according to a fifth embodiment of the present application.
  • the first embodiment of the present application relates to a fingerprint registration method, which includes: acquiring a fingerprint image collected during a user sliding a finger; filtering the acquired fingerprint image; registering a fingerprint image that meets preset filtering conditions In the fingerprint template.
  • a fingerprint registration method which includes: acquiring a fingerprint image collected during a user sliding a finger; filtering the acquired fingerprint image; registering a fingerprint image that meets preset filtering conditions In the fingerprint template.
  • the fingerprint registration method in this embodiment can be applied to terminals with fingerprint recognition functions such as smart phones and tablet computers.
  • the flowchart of the fingerprint registration method in this embodiment may be as shown in FIG. 1 and includes:
  • Step 101 Acquire the fingerprint image collected during the user sliding the finger.
  • the fingerprint sensor built in the terminal can collect multiple frames of fingerprint images during the sliding process. Specifically, the fingerprint sensor can start fingerprint image collection after detecting a finger press, and continue to collect fingerprint images until it detects that the finger is raised before stopping the collection.
  • Step 102 Screen the acquired fingerprint image.
  • it can be screened according to the image quality, image area, and overlap area of each frame of fingerprint images collected during the sliding process. For example, it may be that after finishing a slide, all fingerprint images in a slide are collected, and then all the fingerprint images are filtered, or a specified number of fingerprint images are collected in a sliding process, and then filtered first, and then Continue collecting.
  • FIG. 2 takes the fingerprint image collected after the end of a sliding process as an example for specific description, but it is not limited to this in practical applications.
  • Step 1021 Determine the image quality and image area of the fingerprint image of the current frame.
  • the image quality of the fingerprint image can be measured according to the sharpness of the collected fingerprint image, the gray distribution of the fingerprint image, the distribution of the characteristic points of the fingerprint image, and other parameters, which can be determined using any appropriate image quality calculation algorithm.
  • the fingerprint area of the fingerprint image can be determined using any appropriate area calculation algorithm after the fingerprint image is obtained, which is not specifically limited in this embodiment. It should be noted that, in this embodiment, only image quality and image area are used as a screening standard for fingerprint images. In practical applications, it is not limited to the above two screening standards, and those skilled in the art may add other Criteria for screening fingerprint images.
  • Step 1022 determine whether the image quality and image area of the fingerprint image of the current frame conform to the preset image standard; if yes, perform step 1023; otherwise, perform step 1024.
  • the preset image standard may include a preset image quality standard and a preset image area standard.
  • the preset image standard may be set by those skilled in the art according to actual needs, for example, a certain sharpness threshold, a threshold of image area size, etc. may be set, but this embodiment does not specifically limit this. If the fingerprint image of the current frame meets the preset image standard, step 1023 is executed, otherwise step 1024 is executed.
  • Step 1023 Determine whether the overlap rate between the fingerprint image of the current frame and the fingerprint image of the previous frame is less than the preset overlap rate threshold, if yes, perform step 1025, otherwise execute step 1024.
  • the preset overlap rate threshold may be set by a person skilled in the art according to needs, and is intended to retain one fingerprint image among several frames of fingerprint images with a high overlap rate.
  • the fingerprint image of the current frame is the fingerprint image 2 of the dotted frame.
  • the overlap rate of the fingerprint image 2 and the fingerprint image 1 is high. It can be considered that the fingerprint image of the current frame and the previous frame
  • the overlap rate of the fingerprint image is greater than the preset overlap rate threshold, step 1024 is executed, otherwise step 1025 is executed.
  • this embodiment is not limited to comparison with the fingerprint image of the previous frame, and can be compared with any fingerprint image collected before,
  • Step 1024 Remove the fingerprint image of the current frame.
  • the fingerprint image of the current frame does not meet the preset image standard or the preset overlap rate standard, the fingerprint image of the current frame will be removed.
  • the fingerprint image of the current frame that is, fingerprint image 2
  • the fingerprint image of the current frame can be eliminated.
  • Step 1025 Use the fingerprint image of the current frame as the selected fingerprint image that meets the screening conditions.
  • the fingerprint image that meets the image quality standards, image area standards, and image overlap rate standards can be As a fingerprint image that satisfies preset screening conditions.
  • Step 103 Register the fingerprint image that meets the preset screening conditions in the fingerprint template.
  • the fingerprint images that meet the screening conditions after the screening are registered for the template, that is, the fingerprint images that meet the screening conditions are stored on the fingerprint template, and multiple fingerprint images that meet the screening conditions are stored on the fingerprint template for subsequent fingerprint recognition
  • the samples collected at the time are matched.
  • the terminal can provide different fingerprint templates for different finger fingerprints, and store the fingerprint templates of different fingers in different storage spaces to meet the needs of users who need to use different fingerprints for fingerprint recognition.
  • this embodiment can enable the user to quickly register using a sliding method during registration, and because the collected fingerprint images are filtered, the validity of the fingerprint images stored in the registration template is improved, which makes the registration The amount of valid information in the template has greatly increased.
  • the fingerprint images that do not meet the screening conditions during the sliding process are not registered, there is more registration space on the fingerprint template to register the fingerprint images that meet the screening conditions, which is conducive to improving the accuracy of fingerprint recognition and improving the recognition experience.
  • the second embodiment of the present application relates to a fingerprint registration method.
  • the number of swipes is preset, and the user is required to swipe multiple times to perform template registration based on the fingerprint images collected by multiple swipes.
  • the fingerprint registration method in this embodiment may be as shown in FIG. 4 and specifically includes:
  • Step 201 Acquire a fingerprint image collected during the user's finger sliding process.
  • Step 202 Screen the fingerprint images collected during the sliding process.
  • the fingerprint images collected during the sliding process may be screened according to the method of step 102 in the first embodiment. To avoid repetition, they are not described here one by one.
  • Step 203 Detect whether there is a first fingerprint image that satisfies a preset condition among the fingerprint images registered on the fingerprint template. If yes, perform step 204, otherwise perform step 205.
  • the preset condition may be that: the overlapping area of the first fingerprint image and the second fingerprint image is greater than a preset threshold and the image quality of the second fingerprint image exceeds the image quality of the first fingerprint image, and the second fingerprint image may be The fingerprint image that satisfies the screening conditions during the sliding of the finger twice, that is, the fingerprint image to be registered that is screened out this time, the preset threshold can be set by those skilled in the art according to actual needs. That is to say, if there is a fingerprint image in the fingerprint image that has been registered in the fingerprint template with an overlap area that is too large as the fingerprint image to be registered, it can be considered that there is a first fingerprint image that satisfies the preset condition, and then step 204 is performed. If there is no first fingerprint image satisfying the preset condition, step 205 is executed.
  • Step 204 Delete the first fingerprint image and register the second fingerprint image in the fingerprint template.
  • this step can be understood as dynamically adjusting the fingerprint image stored in the fingerprint template, excluding redundant data therein, so that there can be enough registration space to register a new fingerprint image. That is, the first fingerprint image of poor quality that has been registered in the fingerprint template is deleted and replaced with a second fingerprint image of better quality.
  • Step 205 Register the second fingerprint image in the fingerprint template.
  • the second fingerprint image to be stored is directly registered in the fingerprint template.
  • Step 206 Determine whether the number of times the user slides the finger reaches the preset number of times. If yes, perform step 208, otherwise perform step 207.
  • the preset number of times can be set by those skilled in the art according to actual needs, aiming to obtain enough fingerprint images by sliding the preset number of times. If the number of times the user slides the finger reaches the preset number of times, step 208 is executed, otherwise Step 207.
  • Step 207 Send a prompt message to prompt the user to continue sliding the finger.
  • the prompt message sent can carry the sliding area of the next sliding finger.
  • the sliding area of the next sliding finger is different from the sliding area of the user's previous sliding finger.
  • the sliding area prompting the fifth sliding can be the same as the sliding area of the previous 4 times.
  • the prompt information can also prompt the user to slide in a different direction, for example, to prompt the user to slide in different directions to collect fingerprint images when sliding in different directions, which is beneficial to obtain more effective fingerprint images.
  • Step 208 Prompt for successful registration.
  • the user can be prompted to register successfully through voice notification or on-screen display.
  • voice notification or on-screen display it is not limited to this, and any way of prompting the successful registration is within the protection scope of this embodiment.
  • Step 209 Mark the fingerprint template.
  • the fingerprint template registered by sliding may be marked with a template.
  • the sliding fingerprint registered in the fingerprint template can be replaced with the pressed fingerprint. Since the fingerprint obtained by pressing is more in line with the user's usage habit of unlocking by pressing the fingerprint, replacing the sliding fingerprint registered in the fingerprint template with the above pressing fingerprint is more beneficial to the accuracy of fingerprint recognition.
  • multiple swiping of fingers in this embodiment is beneficial to collect multi-azimuth, multi-angle, and a large number of fingerprint images.
  • By registering fingerprint images collected by multiple swiping fingers that meet the screening conditions In the fingerprint template it is beneficial to increase the number of fingerprint images in the fingerprint template that meet the screening conditions, thereby facilitating more accurate matching when performing fingerprint recognition.
  • the third embodiment of the present application relates to a fingerprint registration method.
  • the method before detecting whether there is a first fingerprint image that satisfies a preset condition among the fingerprint images registered on the fingerprint template, the method further includes: detecting for storing Whether the storage space of the fingerprint template is full; if the storage space is full, performing the detection of whether there is a first fingerprint image that satisfies a preset condition among the fingerprint images registered on the fingerprint template.
  • the fingerprint registration method in this embodiment is shown in FIG. 5 and specifically includes:
  • Step 301 Acquire the fingerprint image collected during the user's sliding of the finger this time.
  • Step 302 Screen the fingerprint images collected during the sliding process.
  • Steps 301 to 302 are substantially the same as steps 201 to 202 in the second embodiment. To avoid repetition, they are not repeated here.
  • Step 303 Detect whether the storage space for storing the fingerprint template is full, if yes, go to step 304, otherwise go to step 305.
  • the storage space for storing the fingerprint template may be preset by a person skilled in the art according to actual needs. For example, it is set that when 30 frames of fingerprint images are registered in the fingerprint template, the storage space is full. However, this embodiment only takes the storage space as 30 frames for example, but it is not limited to this in practical applications. If it is detected that the storage space for storing the fingerprint template is full, step 304 is performed, otherwise step 305 is performed.
  • Step 304 Detect whether there is a first fingerprint image that satisfies the preset condition among the fingerprint images registered on the fingerprint template. If yes, perform step 306, otherwise perform step 305.
  • step 304 is substantially the same as step 203 in the second embodiment. To avoid repetition, details are not described here.
  • step 303 after step 303 is executed, if it is determined that the storage space is full and there is no first fingerprint image that satisfies the preset condition in the fingerprint image registered on the fingerprint template, the invalid fingerprint image is deleted And register the second fingerprint image in the fingerprint template; where the invalid fingerprint image is: the fingerprint image with the least effective fingerprint information among the registered fingerprint images.
  • the fingerprint image registered in the fingerprint template can be removed from the fingerprint image with the least effective information added to restore the user's fingerprint.
  • the valid information can be understood as the information provided for the user's fingerprint image.
  • the fingerprint image with the least valid information can be understood as: extracting the texture detail features of each fingerprint image that has been registered, the texture texture features extracted are the least Fingerprint image.
  • Step 305 Register the second fingerprint image in the fingerprint template.
  • Step 306 Delete the first fingerprint image and register the second fingerprint image in the fingerprint template.
  • Step 307 Determine whether the number of times the user slides the finger reaches the preset number of times. If yes, perform step 309; otherwise, perform step 308.
  • Step 308 Send a prompt message to prompt the user to continue sliding the finger.
  • Step 309 Prompt for successful registration.
  • Step 310 Mark the fingerprint template.
  • Steps 305 to 310 are respectively substantially the same as steps 204 to 209 in the second embodiment. To avoid repetition, they are not repeated here one by one.
  • the fingerprint image registered in the fingerprint template is dynamically adjusted, which is beneficial to improve the effectiveness of the dynamic adjustment, so that even if the registered space Full, can also be adjusted dynamically, so that better fingerprint images can be registered in the fingerprint template.
  • the fourth embodiment of the present application relates to a fingerprint registration method.
  • it before filtering the fingerprint images collected during the sliding process, it further includes: detecting whether the sliding process meets the preset requirements. If the secondary sliding process meets the preset requirements, then the fingerprint images collected during the sliding process are screened again.
  • the fingerprint registration method of this embodiment is shown in FIG. 6 and specifically includes:
  • Step 401 Acquire the fingerprint image collected during the user's finger sliding process.
  • Step 401 is substantially the same as step 301 in the third embodiment. To avoid repetition, details are not repeated here.
  • Step 402 Detect whether the sliding process meets the preset requirements. If yes, perform step 403; otherwise, perform step 404.
  • the preset requirement may be that: the overlapping area of the sliding area of this sliding and the sliding area of any previous sliding finger is smaller than the preset area; the preset area may be set by those skilled in the art according to actual needs.
  • the dashed frame is the current sliding area 2 and the solid line is the last sliding area 1. It can be seen from FIG. 7 that the overlapping area between the current sliding area 2 and the last sliding area 1 is It can be considered whether this sliding process does not meet the preset requirements.
  • step 404 is performed
  • the preset requirement is satisfied, that is, the current slide is an effective slide
  • step 403 is performed.
  • FIG. 7 is only a comparison between the sliding area of this slide and the previous slide. In practical applications, the sliding area of this slide can be compared with any previous sliding area to determine the cost Whether the secondary sliding process meets the preset requirements.
  • Step 403 Screen the fingerprint images collected during the sliding process.
  • Step 403 is substantially the same as step 302 in the third embodiment, and will not be repeated here to avoid repetition.
  • Step 404 Discard the fingerprint image collected during this sliding process.
  • step 404 can be continued to issue a prompt message to prompt the user to continue sliding.
  • Step 405 Detect whether the storage space for storing the fingerprint template is full, if yes, go to step 406, otherwise go to step 407.
  • Step 406 Detect whether there is a first fingerprint image that satisfies the preset condition among the fingerprint images registered on the fingerprint template, if yes, perform step 407, otherwise perform step 408.
  • Step 407 Delete the first fingerprint image and register the second fingerprint image in the fingerprint template.
  • Step 408 Register the second fingerprint image in the fingerprint template.
  • Step 409 Determine whether the number of times the user slides the finger reaches the preset number of times. If yes, perform step 410, otherwise perform step 411.
  • Step 410 Prompt for successful registration.
  • Step 411 Send a prompt message to remind the user to continue sliding the finger.
  • Step 412 Mark the fingerprint template for sliding registration.
  • Steps 405 to 412 are respectively substantially the same as steps 303 to 310 in the third embodiment. To avoid repetition, they are not repeated here one by one.
  • the fourth embodiment of the present application relates to a terminal, as shown in FIG. 8, including at least one processor 501; and, a memory 502 communicatively connected to the at least one processor 501; wherein, the memory 502 stores at least one processor Instruction executed by 501, the instruction is executed by at least one processor 501, so that at least one processor 501 can execute the fingerprint registration method described above.
  • the bus may include any number of interconnected buses and bridges.
  • the bus connects one or more processors 501 and various circuits of the memory 502 together.
  • the bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be described further herein.
  • the bus interface provides an interface between the bus and the transceiver.
  • the transceiver can be a single element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on the transmission medium.
  • the data processed by the processor 501 is transmitted on the wireless medium through the antenna. Further, the antenna also receives the data and transmits the data to the processor 501.
  • the processor 501 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 502 may be used to store data used by the processor when performing operations.
  • the sixth embodiment of the present invention relates to a computer-readable storage medium that stores a computer program.
  • the computer program is executed by the processor, the above method embodiments are implemented.
  • a program which is stored in a storage medium and includes several instructions to make a device ( It may be a single chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

Abstract

一种指纹注册方法，终端和计算机可读存储介质。指纹注册方法，包括：获取用户滑动手指的过程中所采集到的指纹图像(101)；对获取的所述指纹图像进行筛选(102)；将满足预设的筛选条件的指纹图像注册在指纹模板中(103)，使得用户可以采用滑动的方式注册指纹，无需按压较多次数，提高了用户的使用体验，且有利于提升识别体验。

Description

指纹注册方法、终端和计算机可读存储介质 技术领域
本申请涉及指纹识别技术领域，特别涉及一种指纹注册方法，终端和计算机可读存储介质。
背景技术
随着指纹识别技术的发展，智能手机等移动终端上的指纹识别功能的应用越来越广泛，为人们的生活提供了方便。
然而，发明人发现现有技术中至少存在如下问题：为了满足智能手机等移动终端更多的需求，指纹芯片的面积越来越小，为了保证指纹解锁的体验，需要用户注册时按压的较多的次数，导致用户体验较差。而且由于终端对模板存储空间的大小限制，往往无法将所有采集到的注册数据都保存到模板中，影响识别体验。
发明内容
本申请部分实施例的目的在于提供一种指纹注册方法，终端和计算机可读存储介质，使得用户可以采用滑动的方式注册指纹，无需按压较多次数，提高了用户的使用体验，且有利于提升识别体验。
本申请实施例提供了一种指纹注册方法，包括：获取用户滑动手指的过 程中所采集到的指纹图像；对获取的所述指纹图像进行筛选；将满足预设的筛选条件的指纹图像注册在指纹模板中。
本申请实施例还提供了一种终端，包括：至少一个处理器；以及，与至少一个处理器通信连接的存储器；其中，存储器存储有可被至少一个处理器执行的指令，指令被至少一个处理器执行，以使至少一个处理器能够执行上述的指纹注册方法。
本申请实施例还提供了一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时实现上述的指纹注册方法。
本申请实施例相对于现有技术而言，通过用户滑动手指的方式采集指纹图像，无需用户按压较多次数，滑动一次手指就可以采集到一定数量的指纹图像，提高了用户的使用体验，同时也提高了注册的速度。对获取到的用户滑动手指的过程中所采集到的指纹图像进行筛选；将满足预设的筛选条件的指纹图像注册在指纹模板中。由于对采集到的指纹图像进行了筛选，提高了注册模板中存储的指纹图像的有效性，使得注册模板中的有效信息的数量大大增加。同时，由于未将滑动过程中不满足筛选条件的指纹图像进行注册，使得指纹模板上有更多的注册空间注册满足筛选条件的指纹图像，有利于提升指纹识别的准确度，进步增强识别体验。
在一些实施例中，用户滑动手指的过程，具体为：所述用户多次滑动手指的过程；所述对获取的所述指纹图像进行筛选，具体为：在每一次滑动结束后，对本次滑动过程中所采集到的指纹图像进行筛选；所述将满足预设的筛选条件的指纹图像注册在指纹模板中，具体为：在每一次滑动结束后，将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中。多次滑动 手指，有利于采集到多方位，多角度，数量较多的指纹图像，通过将多次滑动手指所采集到的满足筛选条件的指纹图像注册在指纹模板中，有利于增加指纹模板中满足筛选条件的指纹图像的数量，从而有利于在进行指纹识别时进行更精准的匹配。
在一些实施例中，在将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中之后，还包括：判断所述用户滑动手指的次数是否达到预设次数；若未达到所述预设次数，则发出提示信息以提示所述用户继续滑动手指。通过在滑动次数小于预设次数时，提示用户继续滑动手指，有利于采集得到数量足够多的指纹图像，从而有利于为后续进行指纹识别提供更多有价值的匹配标准。
在一些实施例中，所述提示信息至少包括：下一次滑动手指的滑动区域；其中，所述下一次滑动手指的滑动区域与所述用户之前滑动手指的滑动区域均不相同，有利于采集得到与之前滑动过程中不重复的指纹图像，提高滑动的有效性。
在一些实施例中，在对本次滑动过程中所采集到的指纹图像进行筛选前，还包括：检测所述本次滑动过程是否满足预设要求；其中，所述预设要求为：本次滑动的滑动区域与之前任意一次滑动手指的滑动区域的重叠区域小于预设区域；若所述本次滑动过程满足所述预设要求，则执行所述对本次滑动过程中所采集到的指纹图像进行筛选；若所述本次滑动过程不满足所述预设要求，则丢弃所述本次滑动过程中所采集到的指纹图像。有利于记录有效的滑动次数，进行有效的筛选，丢弃不满足预设要求的滑动过程中所采集到的指纹图像，还有利于避免进行不必要的筛选。
在一些实施例中，将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中，具体包括：检测指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像；当存在满足所述预设条件的第一指纹图像时，删除第一指纹图像并将第二指纹图像注册在所述指纹模板中；其中，所述第二指纹图像为本次滑动手指的过程中满足所述筛选条件的指纹图像，有利于将要在指纹模板注册新的指纹图像时，可以对指纹模板中已经注册的指纹图像进行动态调整，保证指纹模板中有充足的空间可以注册新的指纹图像。
在一些实施例中，所述预设条件具体为：所述第一指纹图像与所述第二指纹图像的重叠面积大于预设阈值且所述第二指纹图像的图像质量超过所述第一指纹图像的图像质量，有利于保证不断有图像质量更好的指纹图像来替换指纹模板中注册的指纹图像，以保证指纹模板上注册的指纹图像整体的图像质量。
在一些实施例中，在检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像之前，还包括：检测用于存储所述指纹模板的存储空间是否已满；若所述存储空间已满，则执行所述检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像。。也就是说，在指纹模板的注册空间已满时，再对指纹模板上注册的指纹图像进行动态调整，有利于提高动态调整的有效性，使得即使注册空间已满，也能通过动态调整，使更优的指纹图像能够注册在指纹模板中。
在一些实施例中，若存储空间已满，且指纹模板上已注册的指纹图像中，不存在满足预设条件的第一指纹图像，则删除无效指纹图像，并将第二指纹图像注册在所述指纹模板中；其中，无效指纹图像为：在已注册的指纹图像中，有效指纹信息最少的指纹图像，为将要注册的指纹图像提供了足够的注册空间。
在一些实施例中，对获取的所述指纹图像进行筛选，具体包括：确定当前帧的指纹图像的图像质量和图像面积；若所述当前帧的指纹图像的图像质量符合预设的质量标准且所述当前帧的指纹图像的图像面积符合预设的面积标准，则计算所述当前帧的指纹图像与前一帧的指纹图像的重叠率；若所述重叠率小于预设的重叠率门限，则将所述当前帧的指纹图像作为筛选出的满足所述筛选条件的指纹图像。通过对滑动过程中获取的若干帧指纹图像先进行图像质量、图像面积的筛选，有利于得到更有利于进行指纹识别的指纹图像。对满足质量标准和面积标准的指纹图像再进行重叠率的筛选，有利于剔除重叠率较高的指纹图像，降低筛选出的指纹图像的重叠率，在一定程度上还降低了对指纹模板注册空间的占用，有利于注册更多更有效的指纹图像。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是根据本申请第一实施例中的指纹注册方法的流程图；
图2是根据本申请第一实施例中的指纹注册方法中剔除重叠区域过多的示意图；
图3是根据本申请第一实施例中的指纹注册方法中步骤102的具体实现过程的流程图；
图4是根据本申请第二实施例中的指纹注册方法的流程图；
图5是根据本申请第三实施例中的指纹注册方法的流程图；
图6是根据本申请第四实施例中的指纹注册方法的流程图；
图7是根据本申请第四实施例中的指纹注册方法中的两次滑动区域的重叠区域的示意图；
图8是根据本申请第五实施例中的终端的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请部分实施例进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。以下各个实施例的划分是为了描述方便，不应对本发明的具体实现方式构成任何限定，各个实施例在不矛盾的前提下可以相互结合相互引用。
本申请第一实施例涉及一种指纹注册方法，包括：获取用户滑动手指的过程中所采集到的指纹图像；对获取的所述指纹图像进行筛选；将满足预设的筛选条件的指纹图像注册在指纹模板中。下面对本实施方式的图像传感器的像素单元结构的实现细节进行具体的说明，以下内容仅为方便理解提供的实现细节，并非实施本方案的必须。
本实施例中的指纹注册方法可以应用在智能手机、平板电脑等带有指纹识别功能的终端。本实施例的指纹注册方法的流程图可以如图1所示，包括：
步骤101：获取用户滑动手指的过程中所采集到的指纹图像。
具体的说，用户在终端上的指纹识别区域滑动手指的过程中，终端内置的指纹传感器可以采集到滑动过程中的多帧指纹图像。具体的，指纹传感器可以在检测到手指按压后，开始进行指纹图像采集，并持续采集指纹图像直到检 测到手指抬起后再停止采集。
步骤102：对获取的指纹图像进行筛选。
具体的说，可以根据滑动过程中采集的各帧指纹图像的图像质量、图像面积以及重叠面积进行筛选。比如说，可以是完成一次滑动后，将一次滑动中所有的指纹图像采集完成后再对全部的指纹图像进行筛选，也可以是在一次滑动过程中采集指定数量的指纹图像后先进行筛选，再继续进行采集。下面图2中以一次滑动过程结束后开始筛选所采集到的指纹图像为例进行具体说明，然而在实际应用中并不以此为限。
步骤1021：确定当前帧的指纹图像的图像质量和图像面积。
具体的说，指纹图像的图像质量可以根据采集的指纹图像的清晰度、指纹图像的灰度分布、指纹图像的特征点分布等参数来衡量，采用任意适当的图像质量计算算法确定。指纹图像的指纹面积可以在得到指纹图像后采用任意适当的面积计算算法确定，对此本实施例不做具体限定。需要说明的是，本实施例中的只是以图像质量和图像面积作为指纹图像的一种筛选标准，在实际应用中，不限于上述两种筛选标准，本领域技术人员还可以根据实际情况增加其它用于筛选指纹图像的标准。
步骤1022：判断当前帧的指纹图像的图像质量和图像面积是否符合预设的图像标准，如果是，则执行步骤1023，否则执行步骤1024。
具体的说，预设的图像标准可以包括预设的图像质量标准和预设的图像面积标准。预设的图像标准可以由本领域技术人员根据实际需要进行设置，比如可以设置一定的清晰度的阈值、图像面积大小的阈值等，然而本实施例对此不做具体限定。若当前帧的指纹图像符合预设的图像标准，则执行步骤1023， 否则执行步骤1024。
步骤1023：判断当前帧的指纹图像与前一帧的指纹图像的重叠率是否小于预设的重叠率门限，如果是，则执行步骤1025，否则执行步骤1024。
具体的说，预设的重叠率门限可以由本领域技术人员根据需要进行设置，旨在保留重叠率较高的若干帧指纹图像中的一张指纹图像。比如说，可以参考图3，当前帧的指纹图像为虚线框的指纹图像2，由图中可见，指纹图像2与指纹图像1的重叠率较高，可以认为当前帧的指纹图像与前一帧的指纹图像的重叠率大于预设的重叠率门限，执行步骤1024，否则执行步骤1025。
需要说明的是，本实施例并不限于与前一帧的指纹图像进行对比，可以与之前采集的任意一帧指纹图像均可以进行对比，
步骤1024：剔除当前帧的指纹图像。
也就是说，若当前帧的指纹图像不符合预设的图像标准或是不符合预设的重叠率标准，将会剔除当前帧的指纹图像。比如说如图3中，可以剔除当前帧的指纹图像，即指纹图像2。
步骤1025：将当前帧的指纹图像作为筛选出的满足筛选条件的指纹图像。
具体的说，在对手指滑动过程中采集的若干帧指纹图像均进行图像质量、图像面积、即图像重叠率的判断后，可以将满足图像质量标准、图像面积标准以及图像重叠率标准的指纹图像作为满足预设的筛选条件的指纹图像。
步骤103：将满足预设的筛选条件的指纹图像注册在指纹模板中。
具体的说，将筛选过后满足筛选条件的指纹图像进行模板注册，即将满足筛选条件的指纹图像存储在指纹模板上，指纹模板上存储有多张满足筛选条件的指纹图像，用于与后续指纹识别时采集到的样本进行匹配。
另外，终端可以为不同的手指指纹提供不同的指纹模板，将不同手指的指纹模板存储在不同的存储空间，以满足用户需要使用不同指纹进行指纹识别的需求。
本实施例相对于现有技术而言，可以使得用户在注册时采用滑动方式快速注册，而且由于对采集到的指纹图像进行了筛选，提高了注册模板中存储的指纹图像的有效性，使得注册模板中的有效信息的数量大大增加。同时，由于未将滑动过程中不满足筛选条件的指纹图像进行注册，使得指纹模板上有更多的注册空间注册满足筛选条件的指纹图像，有利于提升指纹识别的准确度，进步增强识别体验。
本申请第二实施例涉及一种指纹注册方法，本实施例中，预设了滑动次数，需要用户滑动多次，根据多次滑动所采集到的指纹图像进行模板注册。本实施例的指纹注册方法可以如图4所示，具体包括：
步骤201：获取用户本次滑动手指的过程中所采集到的指纹图像。
具体的说，由于本实施例中需要用户多次滑动手指，因此需要获取用户每一次滑动手指过程中指纹传感器所采集到的指纹数据。
步骤202：对本次滑动过程中所采集到的指纹图像进行筛选。
具体的说，在每一次滑动结束后，可以按照第一实施例中步骤102的方式对滑动过程中所采集到的指纹图像进行筛选，为避免重复此处不再一一赘述。
步骤203：检测指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像，如果是，则执行步骤204，否则执行步骤205。
具体的说，预设条件可以为：第一指纹图像与第二指纹图像的重叠面积大于预设阈值且第二指纹图像的图像质量超过第一指纹图像的图像质量，第二 指纹图像可以为本次滑动手指的过程中满足筛选条件的指纹图像，即本次筛选出来的将要注册的指纹图像，预设阈值可以由本领域技术人员根据实际需要进行设置。也就是说，如果指纹模板中已经注册的指纹图像中存在与将要注册的指纹图像的重叠面积过大的指纹图像，则可以认为是存在满足预设条件的第一指纹图像，进而执行步骤204，如果不存在满足预设条件的第一指纹图像则执行步骤205。
步骤204：删除第一指纹图像并将第二指纹图像注册在所述指纹模板中。
具体的说，此步骤可以理解为对指纹模板中存储的指纹图像进行动态调整，剔除其中的冗余数据，使得可以有足够的注册空间来注册新的指纹图像。即删除指纹模板中已经注册的质量较差的第一指纹图像，替换为质量较好的第二指纹图像。
步骤205：将第二指纹图像注册在指纹模板中。
具体的说，如果检测指纹模板上已注册的指纹图像中，不存在满足预设条件的第一指纹图像，说明不存在与将要注册的指纹图像的重叠面积大于预设阈值的指纹图像，则可以直接将将要存储的第二指纹图像注册在指纹模板中。
步骤206：判断用户滑动手指的次数是否达到预设次数，如果是，则执行步骤208，否则执行步骤207。
具体的说，预设次数可以由本领域技术人员根据实际需要进行设置，旨在通过滑动预设次数得到足够多的指纹图像，如果用户滑动手指的次数达到预设次数，则执行步骤208，否则执行步骤207。
步骤207：发出提示信息以提示用户继续滑动手指。
具体的说，发出的提示信息可以携带下一次滑动手指的滑动区域。较佳 的，下一次滑动手指的滑动区域与用户之前滑动手指的滑动区域不相同，比如说之前滑动过4次，那么在提示第5次滑动的滑动区域，可以与之前4次的滑动区域均不相同。当然，在实际应用中提示信息还可以提示用户滑动的方向，比如说提示用户向不同的方向滑动，以采集得到在不同方向上滑动时的指纹图像，有利于得到更多有效的指纹图像。步骤207执行完后，继续执行步骤201获取用户本次滑动手指的过程中所采集到的指纹图像。
步骤208：提示注册成功。
具体的说，可以通过语音通知或是屏幕显示的方式提示用户注册成功。然而在实际应用中，并不以此为限，任何提示注册成功的方式均在本实施例保护范围之内。
步骤209：对指纹模板进行标记。
具体的说，在以滑动手指的方式指纹注册成功之后，可以对通过滑动注册的指纹模板进行模板标记。在后续指纹识别的过程中，如果用户在按压识别时，采集到的按压指纹与标记的指纹模板中注册的滑动指纹匹配成功，可以用该按压指纹替换指纹模板中注册的滑动指纹。由于按压得到的指纹更符合用户通过按压指纹解锁的使用习惯，因此用上述按压指纹替换指纹模板中注册的滑动指纹更有利于指纹识别的准确性。
本实施例相对于现有技术而言，多次滑动手指，有利于采集到多方位，多角度，数量较多的指纹图像，通过将多次滑动手指所采集到的满足筛选条件的指纹图像注册在指纹模板中，有利于增加指纹模板中满足筛选条件的指纹图像的数量，从而有利于在进行指纹识别时进行更精准的匹配。通过在滑动次数小于预设次数时，提示用户继续滑动手指，有利于采集得到数量足够多的指纹 图像，从而有利于为后续进行指纹识别提供更多有价值的匹配标准。
本申请第三实施例涉及一种指纹注册方法，本实施例中，在检测指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像之前，还包括：检测用于存储所述指纹模板的存储空间是否已满；若所述存储空间已满，则执行所述检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像。本实施例中指纹注册方法如图5所示，具体包括：
步骤301：获取用户本次滑动手指的过程中所采集到的指纹图像。
步骤302：对本次滑动过程中所采集到的指纹图像进行筛选。
步骤301至步骤302与第二实施例中步骤201至步骤202大致相同，为避免重复，此处不再赘述。
步骤303：检测用于存储指纹模板的存储空间是否已满，如果是则执行步骤304，否则执行步骤305。
具体的说，存储指纹模板的存储空间可以通过本领域技术人员根据实际需要预先设置。比如说设置为当指纹模板中注册30帧指纹图像时，存储空间已满，然而，本实施方式只是以存储空间为存满30帧为例，但在实际应用中并不以此为限。如果检测到用于存储指纹模板的存储空间已满，则执行步骤304，否则执行步骤305。
步骤304：检测指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像，如果是，则执行步骤306，否则执行步骤305。
具体的说，步骤304与第二实施例中步骤203大致相同为避免重复在此不再赘述。
进一步的，本实施例中，在执行完步骤303后，若判定存储空间已满， 且指纹模板上已注册的指纹图像中，不存在满足预设条件的第一指纹图像，则删除无效指纹图像，并将第二指纹图像注册在指纹模板中；其中，无效指纹图像为：在已注册的指纹图像中，有效指纹信息最少的指纹图像。也就是说，指纹模板中已经注册的指纹图像中不存在与将要注册的指纹图像的重叠面积过大的指纹图像，此时存储空间已满，为了能够为新采集到的指纹图形提供注册空间，可以将指纹模板上注册的指纹图像中为还原用户指纹增加的有效信息最少的指纹图像剔除。有效信息可以理解为为拼成用户的指纹图像所提供的信息，比如说，有效信息最少的指纹图像可以理解为：对已经注册的各个指纹图像提取纹理细节特征，所提取的纹理细节特征最少的指纹图像。
步骤305：将第二指纹图像注册在指纹模板中。
步骤306：删除第一指纹图像并将第二指纹图像注册在所述指纹模板中。
步骤307：判断用户滑动手指的次数是否达到预设次数，如果是，则执行步骤309，否则执行步骤308。
步骤308：发出提示信息以提示用户继续滑动手指。
步骤309：提示注册成功。
步骤310：对指纹模板进行标记。
步骤305至步骤310分别与第二实施例中步骤204至步骤209大致相同，为避免重复，此处不再一一赘述。
与现有技术相比，本实施例在用于存储指纹模板的存储空间已满时，开始对指纹模板中注册的指纹图像进行动态调整，有利于提高动态调整的有效性，使得即使注册空间已满，也能通过动态调整，使更优的指纹图像能够注册在指纹模板中。
本申请第四实施例涉及一种指纹注册方法，本实施例中，对本次滑动过程中所采集到的指纹图像进行筛选前，还包括：检测本次滑动过程是否满足预设要求，如果本次滑动过程满足所述预设要求，则再执行对本次滑动过程中所采集到的指纹图像进行筛选。本实施例的指纹注册方法如图6所示，具体包括：
步骤401：获取用户本次滑动手指的过程中所采集到的指纹图像。
步骤401与第三实施例中步骤301大致相同，为避免重复，此处不再赘述。
步骤402：检测本次滑动过程是否满足预设要求，如果是，则执行步骤403，否则执行步骤404。
具体的说，预设要求可以为：本次滑动的滑动区域与之前任意一次滑动手指的滑动区域的重叠区域小于预设区域；预设区域可以由本领域技术人员根据实际需要进行设置。为方便理解，以图7为例，虚线框的为本次滑动区域2，实线框的为上一次滑动区域1，由图7可见本次滑动区域2与上一次滑动区域1的重叠区域过多，可以认为本次滑动过程是否不满足预设要求。在不满足预设要求时，即本次滑动为无效滑动，执行步骤404，在满足预设要求时，即本次滑动为有效滑动，执行步骤403。需要说明的是，图7只是以本次滑动与上一次滑动的滑动区域进行对比为例，在实际应用中，可以将本次滑动的滑动区域与之前任意一次的滑动区域进行对比，从而判断本次滑动过程是否满足预设要求。
步骤403：对本次滑动过程中所采集到的指纹图像进行筛选。
步骤403与第三实施例中步骤302大致相同，为避免重复此处不再赘述。
步骤404：丢弃本次滑动过程中所采集到的指纹图像。
具体的说，由于本次滑动为无效滑动，即本次的滑动区域与之前的滑动区域存在较大的重叠，那么本次滑动得到的指纹图像极有可能与之前滑动存在过多的重复，因此，丢弃本次滑动过程中所采集到的指纹图像，即不会对本次无效滑动过程中的指纹图像惊醒筛选。步骤404执行完毕后可以继续执行步骤411，发出提示信息以提示用户继续滑动。
步骤405：检测用于存储指纹模板的存储空间是否已满，如果是则执行步骤406，否则执行步骤407。
步骤406：检测指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像，如果是，则执行步骤407，否则执行步骤408。
步骤407：删除第一指纹图像并将第二指纹图像注册在所述指纹模板中。
步骤408：将第二指纹图像注册在指纹模板中。
步骤409：判断用户滑动手指的次数是否达到预设次数，如果是，则执行步骤410，否则执行步骤411。
步骤410：提示注册成功。
步骤411：发出提示信息以提示所述用户继续滑动手指。
步骤412：对滑动注册的指纹模板进行标记。
步骤405至步骤412分别与第三实施例中步骤303至步骤310大致相同，为避免重复，此处不再一一赘述。
本实施例相对于现有技术而言，通过对每次滑动过程有效性的检测，有利于记录有效的滑动次数，进行有效的筛选，丢弃不满足预设要求的滑动过程中所采集到的指纹图像，还有利于避免进行不必要的筛选。
上面各种方法的步骤划分，只是为了描述清楚，实现时可以合并为一 个步骤或者对某些步骤进行拆分，分解为多个步骤，只要包括相同的逻辑关系，都在本专利的保护范围内；对算法中或者流程中添加无关紧要的修改或者引入无关紧要的设计，但不改变其算法和流程的核心设计都在该专利的保护范围内。
本申请第四实施例涉及一种终端，如图8所示，包括至少一个处理器501；以及，与至少一个处理器501通信连接的存储器502；其中，存储器502存储有可被至少一个处理器501执行的指令，指令被至少一个处理器501执行，以使至少一个处理器501能够执行上述的指纹注册方法。
其中，存储器502和处理器501采用总线方式连接，总线可以包括任意数量的互联的总线和桥，总线将一个或多个处理器501和存储器502的各种电路连接在一起。总线还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口在总线和收发机之间提供接口。收发机可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。经处理器501处理的数据通过天线在无线介质上进行传输，进一步，天线还接收数据并将数据传送给处理器501。
处理器501负责管理总线和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器502可以被用于存储处理器在执行操作时所使用的数据。
本发明第六实施方式涉及一种计算机可读存储介质，存储有计算机程序。计算机程序被处理器执行时实现上述方法实施例。
即，本领域技术人员可以理解，实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序存储在一个存储介质中， 包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域的普通技术人员可以理解，上述各实施例是实现本申请的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本申请的精神和范围。

Claims (13)

  1. 一种指纹注册方法，其特征在于，包括：
    获取用户滑动手指的过程中所采集到的指纹图像；
    对获取的所述指纹图像进行筛选；
    将满足预设的筛选条件的指纹图像注册在指纹模板中。
  2. 根据权利要求1所述的指纹注册方法，其特征在于，所述用户滑动手指的过程，具体为：所述用户多次滑动手指的过程；
    所述对获取的所述指纹图像进行筛选，具体为：
    在每一次滑动结束后，对本次滑动过程中所采集到的指纹图像进行筛选；
    所述将满足预设的筛选条件的指纹图像注册在指纹模板中，具体为：
    在每一次滑动结束后，将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中。
  3. 根据权利要求2所述的指纹注册方法，其特征在于，在所述将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中之后，还包括：
    判断所述用户滑动手指的次数是否达到预设次数；
    若未达到所述预设次数，则发出提示信息以提示所述用户继续滑动手指。
  4. 根据权利要求3所述的指纹注册方法，其特征在于，所述提示信息至少包括：下一次滑动手指的滑动区域；其中，所述下一次滑动手指的滑动区域与所述用户之前滑动手指的滑动区域不相同。
  5. 根据权利要求2所述的指纹注册方法，其特征在于，在所述对本次滑动过程中所采集到的指纹图像进行筛选前，还包括：
    检测所述本次滑动过程是否满足预设要求；其中，所述预设要求为：所述本次滑动的滑动区域与之前任意一次滑动手指的滑动区域的重叠区域小于预设区域；
    若所述本次滑动过程满足所述预设要求，则执行所述对本次滑动过程中所采集到的指纹图像进行筛选；
    若所述本次滑动过程不满足所述预设要求，则丢弃所述本次滑动过程中所采集到的指纹图像。
  6. 根据权利要求2所述的指纹注册方法，其特征在于，所述将本次滑动手指的过程中满足预设的筛选条件的指纹图像注册在指纹模板中，具体包括：
    检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像；
    当存在满足所述预设条件的第一指纹图像时，删除所述第一指纹图像并将第二指纹图像注册在所述指纹模板中；其中，所述第二指纹图像为本次滑动手指的过程中满足所述筛选条件的指纹图像。
  7. 根据权利要求6所述的指纹注册方法，其特征在于，所述预设条件具体为：
    所述第一指纹图像与所述第二指纹图像的重叠面积大于预设阈值且所述第二指纹图像的图像质量超过所述第一指纹图像的图像质量。
  8. 根据权利要求6所述的指纹注册方法，其特征在于，在所述检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像之前，还包括：
    检测用于存储所述指纹模板的存储空间是否已满；
    若所述存储空间已满，则执行所述检测所述指纹模板上已注册的指纹图像中，是否存在满足预设条件的第一指纹图像。
  9. 根据权利要求8所述的指纹注册方法，其特征在于，还包括：
    若所述存储空间已满，且所述指纹模板上已注册的指纹图像中，不存在满足预设条件的第一指纹图像，则删除无效指纹图像，并将所述第二指纹图像注册在所述指纹模板中；其中，所述无效指纹图像为：在所述已注册的指纹图像中，有效指纹信息最少的指纹图像。
  10. 根据权利要求1至9中任一项所述的指纹注册方法，其特征在于，所述对获取的所述指纹图像进行筛选，具体包括：
    确定当前帧的指纹图像的图像质量和图像面积；
    若所述当前帧的指纹图像的图像质量符合预设的质量标准且所述当前帧的指纹图像的图像面积符合预设的面积标准，则计算所述当前帧的指纹图像与前一帧的指纹图像的重叠率；
    若所述重叠率小于预设的重叠率门限，则将所述当前帧的指纹图像作为筛选出的满足所述筛选条件的指纹图像。
  11. 根据权利要求1至9中任一项所述的指纹注册方法，其特征在于，在所述将满足预设的筛选条件的指纹图像注册在指纹模板中之后，还包括：
    对所述指纹模板进行标记。
  12. 一种终端，其特征在于，包括：
    至少一个处理器；以及，
    与所述至少一个处理器通信连接的存储器；其中，
    所述存储器存储有可被所述至少一个处理器执行的指令，所述指令被所述 至少一个处理器执行，以使所述至少一个处理器能够执行如权利要求1至11中任一所述的指纹注册方法。
  13. 一种计算机可读存储介质，存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现权利要求1至11中任一项所述的指纹注册方法。
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