TW201828136A - Fingerprint verification method and electronic device - Google Patents

Fingerprint verification method and electronic device Download PDF

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TW201828136A
TW201828136A TW106102545A TW106102545A TW201828136A TW 201828136 A TW201828136 A TW 201828136A TW 106102545 A TW106102545 A TW 106102545A TW 106102545 A TW106102545 A TW 106102545A TW 201828136 A TW201828136 A TW 201828136A
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verification
fingerprint
scores
comparison result
module
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TWI631479B (en
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張永清
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創智能科技股份有限公司
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Abstract

A fingerprint verification method and an electronic device are provided. The fingerprint verification method includes: obtaining a plurality of fingerprint images; comparing each of the plurality of fingerprint images with a preset fingerprint image to obtain a plurality of first comparing results; comparing each two of the plurality of fingerprint images with each other to obtain at least one second comparing result; and determining whether the plurality of fingerprint images are authenticated according to the plurality of first comparing results and the at least one second comparing result.

Description

指紋驗證方法與電子裝置Fingerprint verification method and electronic device

本發明是有關於一種驗證方法,且特別是有關於一種指紋驗證方法與電子裝置。The present invention relates to a verification method, and in particular to a fingerprint verification method and an electronic device.

生物特徵辨識的種類包括臉部、聲音、虹膜、視網膜、靜脈、指紋和掌紋辨識等。由於每個人的指紋都是獨一無二的,且指紋不易隨著年齡或身體健康狀況而變化,因此指紋辨識技術已廣泛地應用在各種領域中。The types of biometrics include face, sound, iris, retina, vein, fingerprint, and palmprint recognition. Since each person's fingerprints are unique and fingerprints are not easily changed with age or physical health, fingerprint recognition technology has been widely used in various fields.

一般來說,依據不同的需求,在指紋辨識的技術領域中常使用錯誤接受率(Fault Acceptance Rate,簡稱FAR)與錯誤拒絕率(Fault Rejection Rate,簡稱FRR)來作為指紋辨識系統的評估指標。錯誤接受率是表示將不合法的使用者誤判為合法的使用者的機率,並且錯誤接受率越低表示指紋辨識裝置的安全性越高。錯誤拒絕率是表示將合法的使用者誤判為不合法的使用者的機率,並且錯誤拒絕率越低表示越便於使用。就目前而言,當欲執行指紋驗證時,指紋辨識裝置會透過使用者的一次按壓來擷取一個指紋影像來進行比對。然而,基於各種不同因素的影響,以致於僅透過一個指紋影像來進行驗證容易造成指紋辨識錯誤,使得合法的使用者無法通過指紋驗證,進而影響指紋辨識裝置的安全性或便利性。因此,如何提升指紋驗證的準確度為目前重要的課題。In general, according to different needs, the Fault Acceptance Rate (FAR) and the Fault Rejection Rate (FRR) are often used as evaluation indicators of the fingerprint identification system in the technical field of fingerprint identification. The error acceptance rate is a probability that a user who is illegal is mistakenly judged to be a legitimate user, and the lower the error acceptance rate, the higher the security of the fingerprint recognition device. The false rejection rate is a probability that a legitimate user is mistakenly judged to be an illegal user, and the lower the false rejection rate, the easier it is to use. For the time being, when fingerprint verification is to be performed, the fingerprint identification device captures a fingerprint image through a single press of the user for comparison. However, based on the influence of various factors, the verification by only one fingerprint image is likely to cause a fingerprint identification error, so that a legitimate user cannot pass the fingerprint verification, thereby affecting the security or convenience of the fingerprint identification device. Therefore, how to improve the accuracy of fingerprint verification is an important issue at present.

本發明提供一種驗證方法,特別是一種指紋驗證方法以及適用所述指紋驗證方法的電子裝置。The invention provides a verification method, in particular a fingerprint verification method and an electronic device to which the fingerprint verification method is applied.

本發明的指紋驗證方法包括:取得多個指紋影像;將所述多個指紋影像中的每一個指紋影像與預設的指紋影像比對以取得多個第一比對結果;將所述多個指紋影像中的每兩個指紋影像互相比對以取得至少一個第二比對結果;以及根據所述多個第一比對結果與所述至少一個第二比對結果判斷所述多個指紋影像是否通過驗證。The fingerprint verification method of the present invention includes: acquiring a plurality of fingerprint images; comparing each of the plurality of fingerprint images with a preset fingerprint image to obtain a plurality of first comparison results; Each of the two fingerprint images in the fingerprint image is compared with each other to obtain at least one second comparison result; and determining the plurality of fingerprint images according to the plurality of first comparison results and the at least one second comparison result Whether it passed the verification.

在本發明的一實施例中,上述的指紋驗證方法更包括根據所述多個第一比對結果產生多個初始分數。上述的根據所述多個第一比對結果與所述至少一個第二比對結果判斷所述多個指紋影像是否通過驗證的步驟包括:根據所述至少一個第二比對結果調整所述多個初始分數以取得多個驗證分數;以及根據所述多個驗證分數判斷所述多個指紋影像是否通過驗證。In an embodiment of the invention, the fingerprint verification method further includes generating a plurality of initial scores according to the plurality of first alignment results. The step of determining whether the plurality of fingerprint images pass the verification according to the plurality of first comparison results and the at least one second comparison result comprises: adjusting the plurality according to the at least one second comparison result An initial score to obtain a plurality of verification scores; and determining whether the plurality of fingerprint images pass the verification according to the plurality of verification scores.

在本發明的一實施例中,上述的根據所述多個驗證分數判斷所述多個指紋影像是否通過驗證的步驟包括判斷所述多個驗證分數是否包括符合驗證門檻值的至少一個第一驗證分數。若判斷出所述多個驗證分數包括所述至少一個第一驗證分數,決定對應所述至少一個第一驗證分數的所述多個指紋影像中的第一指紋影像通過驗證。In an embodiment of the present invention, the step of determining whether the plurality of fingerprint images passes the verification according to the plurality of verification scores comprises determining whether the plurality of verification scores includes at least one first verification that meets a verification threshold value. fraction. If it is determined that the plurality of verification scores include the at least one first verification score, determining that the first fingerprint image in the plurality of fingerprint images corresponding to the at least one first verification score passes verification.

在本發明的一實施例中,上述的指紋驗證方法更包括根據所述多個第一比對結果產生至少一個參考比對結果,並且根據所述至少一個參考比對結果與所述至少一個第二比對結果取得至少一個相似性參數。上述的根據所述至少一個第二比對結果調整所述多個初始分數以取得所述多個驗證分數的步驟包括根據所述至少一個相似性參數調整所述多個初始分數以取得所述多個驗證分數。In an embodiment of the present invention, the fingerprint verification method further includes generating at least one reference comparison result according to the plurality of first comparison results, and according to the at least one reference comparison result and the at least one The second comparison result obtains at least one similarity parameter. The step of adjusting the plurality of initial scores according to the at least one second alignment result to obtain the plurality of verification scores includes adjusting the plurality of initial scores according to the at least one similarity parameter to obtain the plurality of Verification scores.

在本發明的一實施例中,上述的根據所述至少一個相似性參數調整所述多個初始分數以取得所述多個驗證分數的步驟包括判斷所述至少一個相似性參數是否小於相似性門檻值。若判斷出所述至少一個相似性參數非小於所述相似性門檻值,根據第一規則來調整所述多個初始分數以取得所述多個驗證分數。若判斷出所述至少一個相似性參數小於所述相似性門檻值,根據第二規則來調整所述多個初始分數以取得所述多個驗證分數。In an embodiment of the invention, the step of adjusting the plurality of initial scores according to the at least one similarity parameter to obtain the plurality of verification scores comprises determining whether the at least one similarity parameter is less than a similarity threshold value. If it is determined that the at least one similarity parameter is not less than the similarity threshold, the plurality of initial scores are adjusted according to the first rule to obtain the plurality of verification scores. If it is determined that the at least one similarity parameter is less than the similarity threshold, the plurality of initial scores are adjusted according to a second rule to obtain the plurality of verification scores.

本發明的電子裝置包括:影像擷取模組、比對模組及驗證模組。影像擷取模組用以取得多個指紋影像。比對模組用以將所述多個指紋影像中的每一個指紋影像與預設的指紋影像比對以取得多個第一比對結果,並且將所述多個指紋影像中的每兩個指紋影像互相比對以取得至少一個第二比對結果。驗證模組用以根據所述多個第一比對結果與所述至少一個第二比對結果判斷所述多個指紋影像是否通過驗證。The electronic device of the present invention comprises: an image capturing module, a comparison module and a verification module. The image capture module is used to acquire multiple fingerprint images. The comparison module is configured to compare each of the plurality of fingerprint images with a preset fingerprint image to obtain a plurality of first alignment results, and each of the plurality of fingerprint images The fingerprint images are compared to each other to obtain at least one second alignment result. The verification module is configured to determine, according to the plurality of first comparison results and the at least one second comparison result, whether the plurality of fingerprint images pass the verification.

在本發明的一實施例中,上述的比對模組更用以根據所述多個第一比對結果產生多個初始分數。上述的驗證模組用以根據所述至少一個第二比對結果調整所述多個初始分數以取得多個驗證分數,並且根據所述多個驗證分數判斷所述多個指紋影像是否通過驗證。In an embodiment of the invention, the comparison module is further configured to generate a plurality of initial scores according to the plurality of first alignment results. The verification module is configured to adjust the plurality of initial scores according to the at least one second comparison result to obtain a plurality of verification scores, and determine whether the plurality of fingerprint images pass the verification according to the plurality of verification scores.

在本發明的一實施例中,上述的驗證模組用以判斷所述多個驗證分數是否包括符合驗證門檻值的至少一個第一驗證分數。若判斷出所述多個驗證分數包括所述至少一個第一驗證分數,上述的驗證模組用以決定對應所述至少一第一驗證分數的所述多個指紋影像中的第一指紋影像通過驗證。In an embodiment of the invention, the verification module is configured to determine whether the plurality of verification scores includes at least one first verification score that meets a verification threshold. If the plurality of verification scores are determined to include the at least one first verification score, the verification module is configured to determine that the first fingerprint image of the plurality of fingerprint images corresponding to the at least one first verification score passes verification.

在本發明的一實施例中,上述的比對模組用以根據所述多個第一比對結果產生至少一個參考比對結果,並且根據所述至少一個參考比對結果與所述至少一個第二比對結果取得至少一相似性參數。上述的驗證模組根據所述至少一個相似性參數調整所述多個初始分數以取得所述多個驗證分數。In an embodiment of the present invention, the comparison module is configured to generate at least one reference comparison result according to the plurality of first alignment results, and according to the at least one reference comparison result and the at least one The second alignment result obtains at least one similarity parameter. The verification module above adjusts the plurality of initial scores according to the at least one similarity parameter to obtain the plurality of verification scores.

在本發明的一實施例中,上述的驗證模組用以判斷所述至少一個相似性參數是否小於相似性門檻值。若判斷出所述至少一個相似性參數非小於所述相似性門檻值,上述的驗證模組用以根據第一規則來調整所述多個初始分數以取得所述多個驗證分數。若判斷出所述至少一個相似性參數小於所述相似性門檻值,上述的驗證模組用以根據第二規則來調整所述多個初始分數以取得所述多個驗證分數。In an embodiment of the invention, the verification module is configured to determine whether the at least one similarity parameter is less than a similarity threshold. If it is determined that the at least one similarity parameter is not less than the similarity threshold, the verification module is configured to adjust the plurality of initial scores according to the first rule to obtain the plurality of verification scores. If it is determined that the at least one similarity parameter is smaller than the similarity threshold, the verification module is configured to adjust the plurality of initial scores according to the second rule to obtain the plurality of verification scores.

基於上述,本發明的指紋驗證方法與電子裝置可藉由取得多個指紋影像,並將所取得的多個指紋影像逐一與預設的指紋影像比對以執行指紋驗證。Based on the above, the fingerprint verification method and the electronic device of the present invention can perform fingerprint verification by acquiring a plurality of fingerprint images and comparing the obtained plurality of fingerprint images one by one with a preset fingerprint image.

為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.

本發明是藉由取得待驗證指紋的多個指紋影像來判斷待驗證指紋是否通過驗證。而通過所擷取的每一個指紋影像分別與預設的指紋影像之間的多個比對結果,以及所擷取的每兩個指紋影像彼此之間的另外多個比對結果來一起執行指紋驗證可提升指紋驗證的精確度。The invention determines whether the fingerprint to be verified passes the verification by obtaining a plurality of fingerprint images of the fingerprint to be verified. And performing fingerprinting together by using a plurality of comparison results between each captured fingerprint image and a preset fingerprint image, and a plurality of comparison results between each of the captured two fingerprint images Verification improves the accuracy of fingerprint verification.

圖1為根據本發明的一實施例所繪示的電子裝置的方塊圖。FIG. 1 is a block diagram of an electronic device according to an embodiment of the invention.

請參照圖1,本實施例的電子裝置10例如智慧型手機、平板電腦、桌上型電腦或筆記型電腦或其他具有指紋感測器的類似電子裝置。電子裝置10包括指紋感測器110、處理器120與儲存裝置130。Referring to FIG. 1, the electronic device 10 of the embodiment is, for example, a smart phone, a tablet computer, a desktop computer or a notebook computer or other similar electronic device having a fingerprint sensor. The electronic device 10 includes a fingerprint sensor 110, a processor 120, and a storage device 130.

指紋感測器110可為光學式、電阻式、電容式或其他種類的感測元件,用以感測使用者的操作(例如觸碰或接近)以擷取指紋影像。然而,本發明並不以此為限。本領域技術人員可視實際需要選擇以不同的方式來擷取指紋影像的指紋感測器110。The fingerprint sensor 110 can be an optical, resistive, capacitive or other kind of sensing element for sensing a user's operation (eg, touching or approaching) to capture a fingerprint image. However, the invention is not limited thereto. Those skilled in the art can select the fingerprint sensor 110 that captures the fingerprint image in different ways according to actual needs.

儲存裝置130可以是任何類型的固定式或可移動式的隨機存取記憶體(random access memory, RAM)、唯讀記憶體(read-only memory, ROM)、快閃記憶體(flash memory)或類似元件或上述元件的組合。在本實施例中,儲存裝置130用以記錄影像擷取模組131、比對模組132與驗證模組133,這些模組例如是儲存在儲存裝置130中的程式。在另一實施例中,儲存裝置130可用以儲存藉由指紋感測器110所擷取的指紋影像。The storage device 130 can be any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory or Similar elements or combinations of the above elements. In the embodiment, the storage device 130 is configured to record the image capturing module 131, the comparison module 132, and the verification module 133. The modules are, for example, programs stored in the storage device 130. In another embodiment, the storage device 130 can be used to store fingerprint images captured by the fingerprint sensor 110.

處理器120例如是中央處理單元(Central Processing Unit,CPU)或是其他可編程的一般用途或特殊用途的微處理器(Microprocessor)、數位訊號處理器(Digital Signal Processor,DSP)、可編程控制器、特殊應用集成電路(Application Specific Integrated Circuits,ASIC)、可編程邏輯裝置(Programmable Logic Device,PLD)或其他類似裝置或這些裝置的組合。The processor 120 is, for example, a central processing unit (CPU) or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (DSP), programmable controller , Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or other similar devices or a combination of these devices.

處理器120耦接指紋感測器110與儲存裝置130,其會從儲存裝置130中載入影像擷取模組131、比對模組132與驗證模組133的程式,據以執行本發明的指紋驗證方法。以下即舉實施例來說明此方法。The processor 120 is coupled to the fingerprint sensor 110 and the storage device 130, and loads the image capturing module 131, the comparison module 132, and the verification module 133 from the storage device 130, thereby executing the present invention. Fingerprint verification method. The following is an example to illustrate this method.

圖2為根據本發明的一實施例所繪示的指紋驗證方法的流程圖。2 is a flow chart of a fingerprint verification method according to an embodiment of the invention.

請參照圖2,本實施例的方法適用於圖1的電子裝置10,以下即搭配電子裝置10中的各項元件說明本發明的指紋驗證方法的詳細步驟。Referring to FIG. 2, the method of the present embodiment is applied to the electronic device 10 of FIG. 1, and the detailed steps of the fingerprint verification method of the present invention are described below with the components in the electronic device 10.

當使用者欲使用電子裝置10執行指紋驗證操作時,首先,在步驟S201中,處理器120會執行影像擷取模組131而可藉由指紋感測器110來取得多個指紋影像。在一實施例中,圖1的電子裝置10還可包括顯示裝置(未繪示)。電子裝置10可在顯示裝置上顯示關於使用者輸入指紋的按壓次數的提示訊息,並且指紋感測器110隨著使用者的每次按壓動作來擷取多個指紋影像。在一實施例中,處理器120可執行影像擷取模組131而可對指紋感測器110所擷取的影像執行影像處理操作以取得要用來比對的指紋影像。上述的影像處理操作可包括對指紋影像執行灰階處理,或者分析指紋影像的特徵以計算出對應指紋影像的幾何關係(geometric relation)等。上述的幾何關係可例如是關於指紋特徵的相關位置、相對方向或特徵之間的距離等特徵資訊。When the user wants to perform the fingerprint verification operation using the electronic device 10, first, in step S201, the processor 120 executes the image capturing module 131 to obtain a plurality of fingerprint images by the fingerprint sensor 110. In an embodiment, the electronic device 10 of FIG. 1 may further include a display device (not shown). The electronic device 10 can display a prompt message on the display device regarding the number of presses of the user input fingerprint, and the fingerprint sensor 110 captures a plurality of fingerprint images with each pressing action of the user. In an embodiment, the processor 120 can execute the image capturing module 131 and perform an image processing operation on the image captured by the fingerprint sensor 110 to obtain a fingerprint image to be used for comparison. The image processing operations described above may include performing grayscale processing on the fingerprint image, or analyzing features of the fingerprint image to calculate a geometric relation of the corresponding fingerprint image. The above geometric relationship may be, for example, characteristic information about the relative position of the fingerprint feature, the relative direction, or the distance between the features.

接著,在步驟S203中,處理器120會執行比對模組132而將所述多個指紋影像與預設的指紋影像比對以取得多個第一比對結果。比對模組132可因應不同的應用需求而採用不同的比對演算法來執行指紋影像的比對操作。例如,比對模組132可藉由比對每個指紋影像的幾何關係與預設的指紋影像的幾何關係來產生第一比對結果。因此,對應一個指紋影像的第一比對結果可包括用以表示此指紋影像與預設的指紋影像之間相同或相似的特徵(或特徵資訊)。在本步驟中,處理器120還會執行比對模組132而根據第一比對結果來計算出對應每個指紋影像的初始分數。比對模組132可基於所採用的比對演算法而根據第一比對結果計算出初始分數。Next, in step S203, the processor 120 executes the comparison module 132 to compare the plurality of fingerprint images with the preset fingerprint image to obtain a plurality of first comparison results. The comparison module 132 can perform different alignment operations of the fingerprint images by using different alignment algorithms according to different application requirements. For example, the comparison module 132 can generate the first alignment result by comparing the geometric relationship of each fingerprint image with the geometric relationship of the preset fingerprint images. Therefore, the first comparison result corresponding to one fingerprint image may include a feature (or feature information) for indicating the same or similar between the fingerprint image and the preset fingerprint image. In this step, the processor 120 also executes the comparison module 132 to calculate an initial score corresponding to each fingerprint image according to the first comparison result. The comparison module 132 can calculate an initial score based on the first alignment result based on the employed alignment algorithm.

在本實施例中,預設的指紋影像可為根據使用者的指紋所預先建立的指紋影像。例如,圖1的儲存裝置130還用以記錄指紋註冊模組(未繪示)。處理器120可執行指紋註冊模組而可藉由指紋感測器110來取得一個或多個指紋影像以產生註冊的指紋影像。在一實施例中,處理器120可執行指紋註冊模組而對藉由指紋感測器110所擷取的指紋影像執行影像處理操作,並根據經過影像處理後的指紋影像來產生註冊的指紋影像。此外,處理器120可執行指紋註冊模組而將所擷取的多個指紋影像結合成一個註冊的指紋影像,並將註冊的指紋影像儲存至儲存裝置130中。然而,在另一實施例中,指紋註冊模組也可將所擷取的多個指紋影像個別地儲存至儲存裝置130中。此外,在其他的實施例中,預設的指紋影像也可以是儲存在電子裝置10外部的儲存裝置中,而電子裝置10可藉由網路取得預設的指紋影像。In this embodiment, the preset fingerprint image may be a fingerprint image that is pre-established according to the fingerprint of the user. For example, the storage device 130 of FIG. 1 is also used to record a fingerprint registration module (not shown). The processor 120 can execute the fingerprint registration module and the fingerprint sensor 110 can acquire one or more fingerprint images to generate a registered fingerprint image. In an embodiment, the processor 120 may execute a fingerprint processing module to perform an image processing operation on the fingerprint image captured by the fingerprint sensor 110, and generate a registered fingerprint image according to the image processed fingerprint image. . In addition, the processor 120 can execute the fingerprint registration module to combine the captured multiple fingerprint images into one registered fingerprint image, and store the registered fingerprint image into the storage device 130. However, in another embodiment, the fingerprint registration module may also separately store the captured fingerprint images into the storage device 130. In addition, in other embodiments, the preset fingerprint image may also be stored in a storage device external to the electronic device 10, and the electronic device 10 may obtain a preset fingerprint image through the network.

接著,在步驟S205中,處理器120會執行比對模組132而將所述多個指紋影像中的每兩個指紋影像互相比對以取得至少一個第二比對結果。例如,比對模組132可藉由比對一個指紋影像的幾何關係與另一個指紋影像的幾何關係來產生第二比對結果。因此,對應每兩個指紋影像的第二比對結果可包括用以表示這兩個指紋影像之間相同或相似的特徵(或特徵資訊)。換句話說,第一比對結果與第二比對結果可用以表示兩個指紋影像之間的相似程度。當影像擷取模組131是擷取兩個指紋影像時,比對模組132可產生一個第二比對結果。而當影像擷取模組131是擷取三個以上的指紋影像時,比對模組132可產生兩個以上的第二比對結果。Next, in step S205, the processor 120 executes the comparison module 132 to compare each of the plurality of fingerprint images with each other to obtain at least one second comparison result. For example, the comparison module 132 can generate a second alignment result by comparing the geometric relationship of one fingerprint image with the geometric relationship of another fingerprint image. Therefore, the second alignment result corresponding to each of the two fingerprint images may include features (or feature information) for indicating the same or similar between the two fingerprint images. In other words, the first alignment result and the second alignment result can be used to indicate the degree of similarity between the two fingerprint images. When the image capturing module 131 captures two fingerprint images, the comparison module 132 can generate a second comparison result. When the image capturing module 131 captures more than three fingerprint images, the comparison module 132 can generate two or more second comparison results.

爾後,在步驟S207中,處理器120會執行驗證模組133而根據所述多個第一比對結果與所述至少一個第二比對結果來判斷所述多個指紋影像是否通過驗證。在一實施例中,處理器120會執行驗證模組133而根據第二比對結果來調整依據第一比對結果所計算的初始分數以產生對應每個指紋影像的驗證分數。例如,在一情況下,驗證模組133根據某個第二比對結果判斷出某兩個指紋影像之間的相似程度很高,則驗證模組133會分別將這兩個指紋影像的初始分數調高來產生驗證分數。換句話說,在此情況下的驗證分數會大於初始分數。而在另一情況下,驗證模組133根據某個第二比對結果判斷出某兩個指紋影像之間的相似程度不夠高,則驗證模組133會分別將這兩個指紋影像的初始分數調低來產生驗證分數。換句話說,在此另一情況下的驗證分數會小於初始分數。Then, in step S207, the processor 120 executes the verification module 133 to determine whether the plurality of fingerprint images pass the verification according to the plurality of first comparison results and the at least one second comparison result. In an embodiment, the processor 120 executes the verification module 133 to adjust the initial score calculated according to the first comparison result according to the second comparison result to generate a verification score corresponding to each fingerprint image. For example, in a case, the verification module 133 determines that the degree of similarity between two fingerprint images is high according to a certain second comparison result, and the verification module 133 separately sets the initial scores of the two fingerprint images. Increase to generate a verification score. In other words, the verification score in this case will be greater than the initial score. In another case, the verification module 133 determines that the degree of similarity between the two fingerprint images is not high enough according to a certain second comparison result, and the verification module 133 separately sets the initial scores of the two fingerprint images. Decrease to generate a verification score. In other words, the verification score in this other case will be smaller than the initial score.

此外,在步驟S207中,在取得驗證分數之後,處理器120會執行驗證模組133而判斷驗證分數是否高於驗證門檻值來決定指紋影像是否通過驗證。例如,驗證模組133會判斷多個驗證分數中是否包括符合驗證門檻值的驗證分數(亦稱第一驗證分數)。若判斷出多個驗證分數中包括第一驗證分數,決定對應所述第一驗證分數的指紋影像圖像(亦稱第一指紋影像圖像)通過驗證。然而,在另一實施例中,處理器120會執行驗證模組133而先判斷初始分數是否高於驗證門檻值以決定是否要根據第二比對結果來調整初始分數。例如,在一情況下,驗證模組133判斷某個指紋影像的初始分數高於驗證門檻值,因而直接決定所述指紋影像通過驗證。而在另一情況下,驗證模組133判斷某個指紋影像的初始分數低於驗證門檻值,因而根據對應所述指紋影像的第二比對結果來調整初始分數以產生新的驗證分數。爾後,再根據所產生的驗證分數來決定此指紋影像是否通過驗證。In addition, in step S207, after obtaining the verification score, the processor 120 executes the verification module 133 to determine whether the verification score is higher than the verification threshold to determine whether the fingerprint image passes the verification. For example, the verification module 133 determines whether a plurality of verification scores include a verification score (also referred to as a first verification score) that meets the verification threshold. If it is determined that the plurality of verification scores include the first verification score, the fingerprint image image (also referred to as the first fingerprint image image) corresponding to the first verification score is determined to pass the verification. However, in another embodiment, the processor 120 executes the verification module 133 to determine whether the initial score is higher than the verification threshold to determine whether the initial score is to be adjusted according to the second comparison result. For example, in one case, the verification module 133 determines that the initial score of a certain fingerprint image is higher than the verification threshold, and thus directly determines that the fingerprint image passes the verification. In another case, the verification module 133 determines that the initial score of a certain fingerprint image is lower than the verification threshold, and thus adjusts the initial score according to the second comparison result corresponding to the fingerprint image to generate a new verification score. Then, based on the generated verification score, it is determined whether the fingerprint image passes the verification.

在一實施例中,在調整初始分數之前,處理器120可執行比對模組132而根據上述的第一比對結果來產生至少一個參考比對結果。例如,比對模組132藉由比對每兩個第一比對結果來取得參考比對結果。接著,比對模組132可根據所取得的參考比對結果與上述的第二比對結果來產生相似性參數。爾後,處理器120可執行驗證模組133而根據所取得的相似性參數來調整初始分數以產生驗證分數,進而根據驗證分數來判斷所述多個指紋影像是否通過驗證。In an embodiment, before adjusting the initial score, the processor 120 may execute the comparison module 132 to generate at least one reference alignment result according to the first comparison result described above. For example, the comparison module 132 obtains the reference alignment result by comparing each of the two first alignment results. Then, the comparison module 132 can generate a similarity parameter according to the obtained reference comparison result and the second comparison result. Thereafter, the processor 120 may execute the verification module 133 to adjust the initial score according to the obtained similarity parameter to generate a verification score, and then determine whether the plurality of fingerprint images pass the verification according to the verification score.

圖3為根據本發明的一實施例所繪示的取得的指紋影像與預設的指紋影像的示意圖。FIG. 3 is a schematic diagram of a captured fingerprint image and a preset fingerprint image according to an embodiment of the invention.

請參照圖3,電子裝置10執行影像擷取模組131而藉由指紋感測器110偵測使用者的多次按壓來擷取對應使用者指紋30的多個指紋影像321、322、323。在圖3的實施例中,電子裝置10的儲存裝置130中已儲存了對應使用者指紋30的預設的指紋影像311。如圖3所示,取得的指紋影像321、322、323與預設的指紋影像311分別具有重疊區域。兩個指紋影像之間的重疊區域中會包括兩個指紋影像之間相同或相似的特徵(或特徵資訊)。在本實施例中,處理器120執行比對模組132而根據各指紋影像的幾何關係來找出重疊區域。進而,比對模組132根據重疊區域來產生對應各指紋影像321、322、323的第一比對結果,並且可根據各指紋影像321、322、323的第一比對結果來計算出對應的初始分數。此外,取得的指紋影像321、322、323彼此之間也具有重疊區域。處理器120執行比對模組132根據重疊區域來產生指紋影像321、322、323中的每兩個指紋影像之間的第二比對結果。Referring to FIG. 3 , the electronic device 10 executes the image capturing module 131 and detects multiple presses of the user by the fingerprint sensor 110 to capture a plurality of fingerprint images 321 , 322 , and 323 corresponding to the user fingerprint 30 . In the embodiment of FIG. 3, the preset fingerprint image 311 corresponding to the user fingerprint 30 has been stored in the storage device 130 of the electronic device 10. As shown in FIG. 3, the acquired fingerprint images 321, 322, and 323 and the preset fingerprint image 311 have overlapping regions, respectively. The overlapping area between the two fingerprint images includes the same or similar features (or feature information) between the two fingerprint images. In this embodiment, the processor 120 executes the comparison module 132 to find the overlapping area according to the geometric relationship of each fingerprint image. Further, the comparison module 132 generates a first comparison result corresponding to each fingerprint image 321 , 322 , 323 according to the overlapping area, and can calculate a corresponding result according to the first comparison result of each fingerprint image 321 , 322 , 323 . Initial score. Further, the acquired fingerprint images 321, 322, and 323 also have overlapping regions with each other. The processor 120 executes the comparison module 132 to generate a second comparison result between each of the fingerprint images 321 , 322 , 323 according to the overlapping area.

圖4為根據本發明的一實施例所繪示的指紋驗證方法的示意圖。在圖4的實施例中,處理器120會執行影像擷取模組131而藉由指紋感測器110取得2個指紋影像來執行指紋驗證操作。FIG. 4 is a schematic diagram of a fingerprint verification method according to an embodiment of the invention. In the embodiment of FIG. 4, the processor 120 executes the image capturing module 131 and obtains two fingerprint images by the fingerprint sensor 110 to perform a fingerprint verification operation.

請參照圖4,處理器120執行影像擷取模組131而取得指紋影像421與422。接著,處理器120執行比對模組132將指紋影像421與預設的指紋影像411比對而產生比對結果CA(1),並且將指紋影像422與預設的指紋影像411比對而產生比對結果CA(2)。此外,比對模組132還將指紋影像421與指紋影像422比對而產生比對結果CB(1)。再者,比對模組132還根據比對結果CA(1)計算對應指紋影像421的初始分數,並根據比對結果CA(2)計算對應指紋影像422的初始分數。在取得上述的比對結果之後,處理器120執行驗證模組133而根據比對結果CA(1)與比對結果CA(2)來判斷指紋影像421與指紋影像422是否通過驗證。Referring to FIG. 4, the processor 120 executes the image capturing module 131 to obtain fingerprint images 421 and 422. Then, the processor 120 performs a comparison module 132 to compare the fingerprint image 421 with the preset fingerprint image 411 to generate a comparison result CA(1), and compares the fingerprint image 422 with the preset fingerprint image 411 to generate a comparison result CA(1). Compare the results to CA(2). In addition, the comparison module 132 also compares the fingerprint image 421 with the fingerprint image 422 to generate a comparison result CB(1). Furthermore, the comparison module 132 further calculates an initial score of the corresponding fingerprint image 421 according to the comparison result CA(1), and calculates an initial score of the corresponding fingerprint image 422 according to the comparison result CA(2). After obtaining the above comparison result, the processor 120 executes the verification module 133 to determine whether the fingerprint image 421 and the fingerprint image 422 pass the verification based on the comparison result CA(1) and the comparison result CA(2).

具體來說,處理器120可先執行比對模組132而根據比對結果CA(1)與比對結果CA(2)產生指紋影像421與指紋影像422之間的參考比對結果CR(1)。進而,比對模組132根據指紋影像421與指紋影像422之間的參考比對結果CR(1)與比對結果CB(1)來取得相似性參數。舉例而言,處理器120執行比對模組132而比對對應指紋影像421的幾何關係與對應預設的指紋影像411的幾何關係以取得指紋影像421與預設的指紋影像411之間的比對結果CA(1)。比對結果CA(1)包括用以表示指紋影像421與預設的指紋影像411之間相同或相似的特徵(或特徵資訊)的相似性資訊。類似地,比對模組132也比對對應指紋影像422的幾何關係與對應預設的指紋影像411的幾何關係來取得指紋影像422與預設的指紋影像411之間的比對結果CA(2)。比對結果CA(2)包括用以表示指紋影像422與預設的指紋影像411之間相同或相似的特徵(或特徵資訊)的相似性資訊。接著,比對模組132根據比對結果CA(1)與比對結果CA(2)的相似性資訊來比對出指紋影像421與指紋影像422之間的參考相似性資訊作為參考比對結果CR(1)。指紋影像421與指紋影像422之間的參考相似性資訊可以是指紋影像421與指紋影像422之間的相似性資訊的一部分。例如,比對模組132可分析出兩個相似性資訊之間的相同的特徵資訊來取得參考相似性資訊。進而,比對模組132判斷指紋影像421與指紋影像422之間的參考比對結果CR(1)與比對結果CB(1)之間的相似程度來取得相似性參數。例如,比對模組132可計算參考比對結果CR(1)的相似性資訊與比對結果CB(1)的相似性資訊的重複率來做為相似性參數。Specifically, the processor 120 may first execute the comparison module 132 to generate a reference comparison result CR (1) between the fingerprint image 421 and the fingerprint image 422 according to the comparison result CA(1) and the comparison result CA(2). ). Further, the comparison module 132 obtains a similarity parameter based on the reference comparison result CR(1) and the comparison result CB(1) between the fingerprint image 421 and the fingerprint image 422. For example, the processor 120 performs a comparison between the geometric relationship of the corresponding fingerprint image 421 and the corresponding preset fingerprint image 411 by the comparison module 132 to obtain a ratio between the fingerprint image 421 and the preset fingerprint image 411. For the result CA(1). The comparison result CA(1) includes similarity information for indicating the same or similar feature (or feature information) between the fingerprint image 421 and the preset fingerprint image 411. Similarly, the comparison module 132 also compares the geometric relationship between the corresponding fingerprint image 422 and the corresponding preset fingerprint image 411 to obtain the comparison result CA between the fingerprint image 422 and the preset fingerprint image 411. ). The comparison result CA(2) includes similarity information for indicating the same or similar feature (or feature information) between the fingerprint image 422 and the preset fingerprint image 411. Then, the comparison module 132 compares the reference similarity information between the fingerprint image 421 and the fingerprint image 422 according to the similarity information of the comparison result CA(1) and the comparison result CA(2) as a reference comparison result. CR (1). The reference similarity information between the fingerprint image 421 and the fingerprint image 422 may be part of the similarity information between the fingerprint image 421 and the fingerprint image 422. For example, the comparison module 132 can analyze the same feature information between the two similarity information to obtain the reference similarity information. Further, the comparison module 132 determines the degree of similarity between the reference comparison result CR(1) between the fingerprint image 421 and the fingerprint image 422 and the comparison result CB(1) to obtain a similarity parameter. For example, the comparison module 132 may calculate the repetition rate of the similarity information of the reference comparison result CR(1) and the similarity information of the comparison result CB(1) as the similarity parameter.

在取得相似性參數之後,處理器120可執行驗證模組133而根據相似性參數來調整對應指紋影像421的初始分數以產生對應指紋影像421的驗證分數,並且根據相似性參數來調整對應指紋影像422的初始分數以產生對應指紋影像422的驗證分數。在本實施例中,驗證模組133是藉由判斷相似性參數是否小於預設的相似性門檻值來決定如何調整初始分數。例如,若判斷出相似性參數非小於(亦即等於或大於)相似性門檻值,驗證模組133會依據第一規則來調整初始分數以產生驗證分數。另一方面,若判斷出相似性參數小於相似性門檻值,驗證模組133會依據第二規則來調整初始分數以產生驗證分數。在本實施例中,根據第一規則所產生的驗證分數會大於或等於初始分數,而根據第二規則所產生的驗證分數會小於初始分數。After obtaining the similarity parameter, the processor 120 may execute the verification module 133 to adjust the initial score of the corresponding fingerprint image 421 according to the similarity parameter to generate a verification score corresponding to the fingerprint image 421, and adjust the corresponding fingerprint image according to the similarity parameter. The initial score of 422 is used to generate a verification score for the corresponding fingerprint image 422. In this embodiment, the verification module 133 determines how to adjust the initial score by determining whether the similarity parameter is less than a preset similarity threshold. For example, if it is determined that the similarity parameter is not less than (ie, equal to or greater than) the similarity threshold, the verification module 133 adjusts the initial score according to the first rule to generate a verification score. On the other hand, if it is determined that the similarity parameter is less than the similarity threshold, the verification module 133 adjusts the initial score according to the second rule to generate a verification score. In this embodiment, the verification score generated according to the first rule may be greater than or equal to the initial score, and the verification score generated according to the second rule may be smaller than the initial score.

爾後,驗證模組133可藉由判斷驗證分數是否符合預設的驗證門檻值來決定指紋影像421與422是否通過驗證。在此,符合驗證門檻值指的是大於或等於驗證門檻值。例如,當判斷出對應指紋影像421(或指紋影像422)的驗證分數大於或等於驗證門檻值時,驗證模組133會判斷指紋影像421(或指紋影像422)通過驗證。而當判斷出對應指紋影像421(或指紋影像422)的驗證分數小於驗證門檻值時,驗證模組133會判斷指紋影像421(或指紋影像422)未通過驗證。在本實施例中,驗證模組133可在指紋影像421與指紋影像422中的其中一個指紋影像符合驗證門檻值時,即判斷本次的指紋驗證結果為通過驗證。然而,在其他實施例中,驗證模組133也可在指紋影像421與指紋影像422兩者皆符合驗證門檻值時才判斷本次的指紋驗證結果為通過驗證。Thereafter, the verification module 133 can determine whether the fingerprint images 421 and 422 pass the verification by determining whether the verification score meets the preset verification threshold. Here, the compliance threshold value refers to a value greater than or equal to the verification threshold. For example, when it is determined that the verification score of the corresponding fingerprint image 421 (or the fingerprint image 422) is greater than or equal to the verification threshold, the verification module 133 determines that the fingerprint image 421 (or the fingerprint image 422) passes the verification. When it is determined that the verification score of the corresponding fingerprint image 421 (or the fingerprint image 422) is less than the verification threshold, the verification module 133 determines that the fingerprint image 421 (or the fingerprint image 422) has not passed the verification. In this embodiment, the verification module 133 can determine that the current fingerprint verification result is verified by verification when one of the fingerprint image 421 and the fingerprint image 422 meets the verification threshold. However, in other embodiments, the verification module 133 can also determine that the fingerprint verification result is verified by the verification when both the fingerprint image 421 and the fingerprint image 422 meet the verification threshold.

圖5為根據本發明的另一實施例所繪示的指紋驗證方法的示意圖。在圖5的實施例中,處理器120會執行影像擷取模組131而藉由指紋感測器110取得3個指紋影像來執行指紋驗證操作。FIG. 5 is a schematic diagram of a fingerprint verification method according to another embodiment of the invention. In the embodiment of FIG. 5, the processor 120 executes the image capturing module 131 and obtains three fingerprint images by the fingerprint sensor 110 to perform a fingerprint verification operation.

請參照圖5,類似於圖4的實施例的方法,處理器120執行影像擷取模組131而取得指紋影像521、522、523。接著,處理器120執行比對模組132而將指紋影像521、522、523分別與預設的指紋影像511比對並產生比對結果CA(3)、CA(4)、CA(5)。此外,比對模組132還將指紋影像521與指紋影像522比對而產生比對結果CB(2),將指紋影像522與指紋影像523比對而產生比對結果CB(3),以及將指紋影像521與指紋影像523比對而產生比對結果CB(4)。再者,比對模組132還根據比對結果CA(3)、CA(4)、CA(5)分別計算對應指紋影像521、522、523的初始分數。Referring to FIG. 5, similar to the method of the embodiment of FIG. 4, the processor 120 executes the image capturing module 131 to obtain fingerprint images 521, 522, and 523. Next, the processor 120 executes the comparison module 132 to compare the fingerprint images 521, 522, and 523 with the preset fingerprint image 511, respectively, and generates comparison results CA(3), CA(4), and CA(5). In addition, the comparison module 132 also compares the fingerprint image 521 with the fingerprint image 522 to generate a comparison result CB(2), compares the fingerprint image 522 with the fingerprint image 523 to generate a comparison result CB(3), and The fingerprint image 521 is compared with the fingerprint image 523 to produce a comparison result CB(4). Furthermore, the comparison module 132 calculates the initial scores of the corresponding fingerprint images 521, 522, and 523 based on the comparison results CA(3), CA(4), and CA(5), respectively.

此外,比對模組132還根據比對結果CA(3)與比對結果CA(4)來產生指紋影像521與指紋影像522之間的參考比對結果CR(2),根據比對結果CA(4)與比對結果CA(5)來產生指紋影像522與指紋影像523之間的參考比對結果CR(3),以及根據比對結果CA(3)與比對結果CA(5)來產生指紋影像521與指紋影像523之間的參考比對結果CR(4)。進而,比對模組132可根據參考比對結果CR(2)與比對結果CB(2)來取得一個相似性參數,根據參考比對結果CR(3)與比對結果CB(3)來取得另一個相似性參數,以及根據參考比對結果CR(4)與比對結果CB(4)來取得另一個相似性參數。In addition, the comparison module 132 further generates a reference comparison result CR(2) between the fingerprint image 521 and the fingerprint image 522 according to the comparison result CA(3) and the comparison result CA(4), according to the comparison result CA. (4) and the comparison result CA(5) to generate a reference comparison result CR(3) between the fingerprint image 522 and the fingerprint image 523, and according to the comparison result CA(3) and the comparison result CA(5) A reference comparison result CR(4) between the fingerprint image 521 and the fingerprint image 523 is generated. Further, the comparison module 132 can obtain a similarity parameter according to the reference comparison result CR(2) and the comparison result CB(2), according to the reference comparison result CR(3) and the comparison result CB(3). Another similarity parameter is obtained, and another similarity parameter is obtained based on the reference comparison result CR(4) and the comparison result CB(4).

換句話說,在圖5的實施例中,指紋影像521、522、523會分別關聯於兩個相似性參數。在本實施例中,處理器120可執行驗證模組133而找出各指紋影像關聯的相似性參數中的最大相似性參數,進而根據最大相似性參數來調整各指紋影像的初始分數。例如,指紋影像521關聯於由參考比對結果CR(2)與比對結果CB(2)所取得的相似性參數,並且也關聯於由參考比對結果CR(4)與比對結果CB(4)所取得的相似性參數。假設驗證模組133判斷出由參考比對結果CR(2)與比對結果CB(2)所取得的相似性參數大於由參考比對結果CR(4)與比對結果CB(4)所取得的相似性參數。因此,驗證模組133會根據由參考比對結果CR(2)與比對結果CB(2)所取得的相似性參數來調整指紋影像521的初始分數而產生驗證分數。進而,驗證模組133可藉由類似於圖4的實施例的方法而根據驗證分數來判斷指紋驗證的結果。In other words, in the embodiment of Figure 5, the fingerprint images 521, 522, 523 are associated with two similarity parameters, respectively. In this embodiment, the processor 120 may execute the verification module 133 to find the maximum similarity parameter among the similarity parameters associated with each fingerprint image, and then adjust the initial score of each fingerprint image according to the maximum similarity parameter. For example, the fingerprint image 521 is associated with the similarity parameter obtained by the reference comparison result CR(2) and the comparison result CB(2), and is also associated with the reference comparison result CR(4) and the comparison result CB ( 4) The similarity parameters obtained. It is assumed that the verification module 133 determines that the similarity parameter obtained by the reference comparison result CR(2) and the comparison result CB(2) is greater than that obtained by the reference comparison result CR(4) and the comparison result CB(4). Similarity parameter. Therefore, the verification module 133 adjusts the initial score of the fingerprint image 521 based on the similarity parameter obtained by the reference comparison result CR(2) and the comparison result CB(2) to generate a verification score. Further, the verification module 133 can determine the result of the fingerprint verification based on the verification score by a method similar to the embodiment of FIG.

綜上所述,本發明是當執行指紋驗證操作時,會藉由取得使用者的多個指紋影像來進行比對以判斷驗證結果是否為通過驗證。並且,可根據每兩個指紋影像之間的相似程度來調整取得的指紋影像與預設的指紋影像之間用以表示比對結果的分數值。如此一來,可以提高比對結果的可靠度,進而提升指紋驗證的準確度。In summary, the present invention performs a fingerprint verification operation by comparing a plurality of fingerprint images of a user to determine whether the verification result is a pass verification. Moreover, the fractional value between the obtained fingerprint image and the preset fingerprint image for indicating the comparison result may be adjusted according to the degree of similarity between each two fingerprint images. In this way, the reliability of the comparison result can be improved, thereby improving the accuracy of fingerprint verification.

雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧電子裝置10‧‧‧Electronic devices

110‧‧‧指紋感測器110‧‧‧Finger sensor

120‧‧‧處理器120‧‧‧ processor

130‧‧‧儲存裝置130‧‧‧Storage device

131‧‧‧影像擷取模組131‧‧‧Image capture module

132‧‧‧比對模組132‧‧‧ Alignment module

133‧‧‧驗證模組133‧‧‧ verification module

S201、S203、S205、S207‧‧‧步驟S201, S203, S205, S207‧‧ steps

30‧‧‧指紋30‧‧‧ Fingerprint

311、321、322、323、411、421、422、511、521、522、523‧‧‧指紋影像311, 321, 322, 323, 411, 421, 422, 511, 521, 522, 523 ‧ ‧ fingerprint images

CA(1)~CA(5)‧‧‧第一比對結果CA(1)~CA(5)‧‧‧ first comparison results

CB(1)~CB(4)‧‧‧第二比對結果CB(1)~CB(4)‧‧‧Second alignment results

CR(1)~CR(4)‧‧‧參考比對結果CR(1)~CR(4)‧‧‧ reference comparison results

圖1為根據本發明的一實施例所繪示的電子裝置的方塊圖。 圖2為根據本發明的一實施例所繪示的指紋驗證方法的流程圖。 圖3為根據本發明的一實施例所繪示的取得的指紋影像與預設的指紋影像的示意圖。 圖4為根據本發明的一實施例所繪示的指紋驗證方法的示意圖。 圖5為根據本發明的另一實施例所繪示的指紋驗證方法的示意圖。FIG. 1 is a block diagram of an electronic device according to an embodiment of the invention. 2 is a flow chart of a fingerprint verification method according to an embodiment of the invention. FIG. 3 is a schematic diagram of a captured fingerprint image and a preset fingerprint image according to an embodiment of the invention. FIG. 4 is a schematic diagram of a fingerprint verification method according to an embodiment of the invention. FIG. 5 is a schematic diagram of a fingerprint verification method according to another embodiment of the invention.

Claims (10)

一種指紋驗證方法,包括: 取得多個指紋影像; 將所述多個指紋影像中的每一個指紋影像與一預設的指紋影像比對以取得多個第一比對結果; 將所述多個指紋影像中的每兩個指紋影像互相比對以取得至少一第二比對結果;以及 根據所述多個第一比對結果與所述至少一第二比對結果判斷所述多個指紋影像是否通過驗證。A fingerprint verification method includes: acquiring a plurality of fingerprint images; comparing each of the plurality of fingerprint images with a preset fingerprint image to obtain a plurality of first comparison results; Each of the two fingerprint images in the fingerprint image is compared with each other to obtain at least one second comparison result; and determining the plurality of fingerprint images according to the plurality of first comparison results and the at least one second comparison result Whether it passed the verification. 如申請專利範圍第1項所述的指紋驗證方法,更包括: 根據所述多個第一比對結果產生多個初始分數, 其中,根據所述多個第一比對結果與所述至少一第二比對結果判斷所述多個指紋影像是否通過驗證的步驟包括: 根據所述至少一第二比對結果調整所述多個初始分數以取得多個驗證分數;以及 根據所述多個驗證分數判斷所述多個指紋影像是否通過驗證。The fingerprint verification method of claim 1, further comprising: generating a plurality of initial scores according to the plurality of first alignment results, wherein, according to the plurality of first alignment results, the at least one The step of determining, by the second comparison result, whether the plurality of fingerprint images pass the verification comprises: adjusting the plurality of initial scores according to the at least one second comparison result to obtain a plurality of verification scores; and according to the plurality of verifications The score determines whether the plurality of fingerprint images pass the verification. 如申請專利範圍第2項所述的指紋驗證方法,其中根據所述多個驗證分數判斷所述多個指紋影像是否通過驗證的步驟包括: 判斷所述多個驗證分數是否包括符合一驗證門檻值的至少一第一驗證分數;以及 若判斷出所述多個驗證分數包括所述至少一第一驗證分數,決定對應所述至少一第一驗證分數的所述多個指紋影像中的一第一指紋影像通過驗證。The fingerprint verification method of claim 2, wherein the step of determining whether the plurality of fingerprint images pass the verification according to the plurality of verification scores comprises: determining whether the plurality of verification scores include a verification threshold value At least one first verification score; and if it is determined that the plurality of verification scores include the at least one first verification score, determining one of the plurality of fingerprint images corresponding to the at least one first verification score The fingerprint image is verified. 如申請專利範圍第2項所述的指紋驗證方法,更包括: 根據所述多個第一比對結果產生至少一參考比對結果;以及 根據所述至少一參考比對結果與所述至少一第二比對結果取得至少一相似性參數, 其中,根據所述至少一第二比對結果調整所述多個初始分數以取得所述多個驗證分數的步驟包括: 根據所述至少一相似性參數調整所述多個初始分數以取得所述多個驗證分數。The fingerprint verification method of claim 2, further comprising: generating at least one reference comparison result according to the plurality of first alignment results; and comparing the at least one reference comparison result with the at least one The second comparison result obtains at least one similarity parameter, wherein the step of adjusting the plurality of initial scores according to the at least one second comparison result to obtain the plurality of verification scores comprises: according to the at least one similarity The parameter adjusts the plurality of initial scores to obtain the plurality of verification scores. 如申請專利範圍第4項所述的指紋驗證方法,其中根據所述至少一相似性參數調整所述多個初始分數以取得所述多個驗證分數的步驟包括: 判斷所述至少一相似性參數是否小於一相似性門檻值; 若判斷出所述至少一個相似性參數非小於所述相似性門檻值,根據一第一規則來調整所述多個初始分數以取得所述多個驗證分數;以及 若判斷出所述至少一相似性參數小於所述相似性門檻值,根據一第二規則來調整所述多個初始分數以取得所述多個驗證分數。The fingerprint verification method of claim 4, wherein the step of adjusting the plurality of initial scores according to the at least one similarity parameter to obtain the plurality of verification scores comprises: determining the at least one similarity parameter Whether it is less than a similarity threshold; if it is determined that the at least one similarity parameter is not less than the similarity threshold, the plurality of initial scores are adjusted according to a first rule to obtain the plurality of verification scores; If it is determined that the at least one similarity parameter is less than the similarity threshold, the plurality of initial scores are adjusted according to a second rule to obtain the plurality of verification scores. 一種電子裝置,包括: 一影像擷取模組,用以取得多個指紋影像; 一比對模組,用以將所述多個指紋影像中的每一個指紋影像與一預設的指紋影像比對以取得多個第一比對結果,並且將所述多個指紋影像中的每兩個指紋影像互相比對以取得至少一第二比對結果;以及 一驗證模組,用以根據所述多個第一比對結果與所述至少一第二比對結果判斷所述多個指紋影像是否通過驗證。An electronic device includes: an image capture module for acquiring a plurality of fingerprint images; and a comparison module for comparing each of the plurality of fingerprint images with a predetermined fingerprint image Pairing a plurality of first alignment results, and comparing each of the plurality of fingerprint images to each other to obtain at least a second comparison result; and a verification module for And determining, by the plurality of first comparison results and the at least one second comparison result, whether the plurality of fingerprint images pass the verification. 如申請專利範圍第6項所述的電子裝置,其中所述比對模組更用以根據所述多個第一比對結果產生多個初始分數, 其中,所述驗證模組用以根據所述至少一第二比對結果調整所述多個初始分數以取得多個驗證分數,並且根據所述驗證分數判斷所述多個指紋影像是否通過驗證。The electronic device of claim 6, wherein the comparison module is further configured to generate a plurality of initial scores according to the plurality of first alignment results, wherein the verification module is used according to the The at least one second comparison result adjusts the plurality of initial scores to obtain a plurality of verification scores, and determines whether the plurality of fingerprint images pass the verification according to the verification scores. 如申請專利範圍第7項所述的電子裝置,其中所述驗證模組用以判斷所述多個驗證分數是否包括符合一驗證門檻值的至少一第一驗證分數, 其中,若判斷出所述多個驗證分數包括所述至少一第一驗證分數,所述驗證模組用以決定對應所述至少一第一驗證分數的所述多個指紋影像中的一第一指紋影像通過驗證。The electronic device of claim 7, wherein the verification module is configured to determine whether the plurality of verification scores includes at least one first verification score that meets a verification threshold, wherein, if the The plurality of verification scores includes the at least one first verification score, and the verification module is configured to determine that a first fingerprint image of the plurality of fingerprint images corresponding to the at least one first verification score passes verification. 如申請專利範圍第7項所述的電子裝置,其中所述比對模組用以根據所述多個第一比對結果產生至少一參考比對結果,並根據所述至少一參考比對結果與所述至少一第二比對結果取得至少一相似性參數, 其中,所述驗證模組用以根據所述至少一相似性參數調整所述多個初始分數以取得所述多個驗證分數。The electronic device of claim 7, wherein the comparison module is configured to generate at least one reference comparison result according to the plurality of first alignment results, and compare the results according to the at least one reference. Acquiring at least one similarity parameter with the at least one second comparison result, wherein the verification module is configured to adjust the plurality of initial scores according to the at least one similarity parameter to obtain the plurality of verification scores. 如申請專利範圍第9項所述的電子裝置,其中所述驗證模組用以判斷所述至少一相似性參數是否小於一相似性門檻值, 其中,若判斷出所述至少一相似性參數非小於所述相似性門檻值,所述驗證模組用以根據一第一規則來調整所述多個初始分數以取得所述多個驗證分數;以及 其中,若判斷出所述至少一相似性參數小於所述相似性門檻值,所述驗證模組用以根據一第二規則來調整所述多個初始分數以取得所述多個驗證分數。The electronic device of claim 9, wherein the verification module is configured to determine whether the at least one similarity parameter is less than a similarity threshold, wherein if the at least one similarity parameter is determined to be non- The verification module is configured to adjust the plurality of initial scores according to a first rule to obtain the plurality of verification scores; and wherein, if the at least one similarity parameter is determined The verification module is configured to adjust the plurality of initial scores according to a second rule to obtain the plurality of verification scores.
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