WO2017161501A1 - 指纹图像的校正方法、装置和终端 - Google Patents

指纹图像的校正方法、装置和终端 Download PDF

Info

Publication number
WO2017161501A1
WO2017161501A1 PCT/CN2016/076998 CN2016076998W WO2017161501A1 WO 2017161501 A1 WO2017161501 A1 WO 2017161501A1 CN 2016076998 W CN2016076998 W CN 2016076998W WO 2017161501 A1 WO2017161501 A1 WO 2017161501A1
Authority
WO
WIPO (PCT)
Prior art keywords
fingerprint image
fingerprint
information
module
sensor unit
Prior art date
Application number
PCT/CN2016/076998
Other languages
English (en)
French (fr)
Inventor
丁才武
陈国盛
钟华
Original Assignee
深圳市汇顶科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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/CN2016/076998 priority Critical patent/WO2017161501A1/zh
Priority to EP16894856.0A priority patent/EP3276531A4/en
Priority to KR1020177030869A priority patent/KR101915426B1/ko
Priority to CN201680000664.5A priority patent/CN106164933B/zh
Publication of WO2017161501A1 publication Critical patent/WO2017161501A1/zh
Priority to US15/790,782 priority patent/US10706254B2/en

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1306Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1347Preprocessing; Feature extraction
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/98Detection or correction of errors, e.g. by rescanning the pattern or by human intervention; Evaluation of the quality of the acquired patterns
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/13Sensors therefor
    • G06V40/1329Protecting the fingerprint sensor against damage caused by the finger
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1347Preprocessing; Feature extraction
    • G06V40/1353Extracting features related to minutiae or pores
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12Fingerprints or palmprints
    • G06V40/1365Matching; Classification

Definitions

  • the present invention relates to the field of fingerprint recognition technologies, and in particular, to a method, device and terminal for correcting a fingerprint image.
  • Fingerprint recognition technology is widely used in intelligent terminals, electronic security, public security fingerprint collection systems and other related fields, and has become one of the most important solutions for identity authentication.
  • fingerprint sensing technology has basically belonged to the standard configuration of intelligent terminals.
  • the fingerprint sensing technology is implemented by using a fingerprint module, and the fingerprint module includes a set of fingerprint sensor units.
  • the pattern is printed on the corresponding cover of the fingerprint module, and the smart terminal manufacturer also needs to screen the logo pattern on the fingerprint module.
  • the place where the logo pattern is raised will be convex and needs to be embedded in the glue layer.
  • the dielectric constant of the silk screen layer and the glue layer cannot be exactly the same, so that the difference between the corresponding fingerprint sensor unit and the other fingerprint sensor unit becomes very large, which is close to the difference generated by the fingerprint signal, and thus the fingerprint A clear logo image is superimposed on the image. This causes the collected fingerprint image to include not only the fingerprint image but also the logo image, so that the captured fingerprint image is inaccurate and affects the fingerprint recognition effect.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • an object of the present invention is to provide a method for correcting a fingerprint image, which can remove the non-fingerprint image portion of the collected fingerprint image, improve the accuracy of the collected fingerprint image, and thereby improve the fingerprint recognition effect.
  • Another object of the present invention is to provide a correction apparatus for a fingerprint image.
  • Another object of the present invention is to provide a terminal.
  • the method for correcting a fingerprint image according to the first aspect of the present invention includes: acquiring information of a pre-stored non-fingerprint image; acquiring a fingerprint image, and performing the fingerprint image according to the information of the non-fingerprint image; Make corrections.
  • the method for correcting a fingerprint image according to the first aspect of the present invention can remove the non-fingerprint in the captured fingerprint image by acquiring the information of the pre-stored non-fingerprint image and correcting the collected fingerprint image according to the information of the non-fingerprint image.
  • the image part improves the accuracy of the collected fingerprint image, thereby improving the fingerprint recognition effect.
  • the apparatus for correcting a fingerprint image includes: an acquisition module, configured to acquire information of a pre-stored non-fingerprint image; and a correction module, configured to acquire a fingerprint image, and according to the non- The fingerprint image is corrected by the information of the fingerprint image.
  • the fingerprint image correcting apparatus can remove the non-fingerprint in the collected fingerprint image by acquiring the information of the pre-stored non-fingerprint image and correcting the collected fingerprint image according to the information of the non-fingerprint image.
  • the image part improves the accuracy of the collected fingerprint image, thereby improving the fingerprint recognition effect.
  • a terminal includes a housing, a processor, a memory, a circuit board, and a power supply circuit, wherein the circuit board is disposed inside a space enclosed by the housing, the processor and the memory.
  • a power supply circuit for supplying power to each circuit or device of the terminal; a memory for storing executable program code; the processor running to correspond to the executable program code by reading executable program code stored in the memory
  • the terminal proposed by the embodiment of the third aspect of the present invention can remove the non-fingerprint image by acquiring information of the pre-stored non-fingerprint image and correcting the collected fingerprint image according to the information of the non-fingerprint image, thereby removing the non-fingerprint image portion of the collected fingerprint image, thereby improving The accuracy of the captured fingerprint image improves the fingerprint recognition effect.
  • a non-volatile computer storage medium includes: acquiring information of a pre-stored non-fingerprint image; acquiring a fingerprint image, and according to the information of the non-fingerprint image, The fingerprint image is corrected.
  • the non-volatile computer storage medium can remove the information of the pre-stored non-fingerprint image and correct the collected fingerprint image according to the information of the non-fingerprint image, thereby removing the captured fingerprint image.
  • the non-fingerprint image portion improves the accuracy of the captured fingerprint image, thereby improving the fingerprint recognition effect.
  • FIG. 1 is a schematic view showing layers of a fingerprint module after a silk screen logo pattern on a cover plate according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method for correcting a fingerprint image according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a calculation flow of Kr in an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for correcting a fingerprint image according to another embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method for correcting a fingerprint image according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a fingerprint image correcting apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a fingerprint image correcting apparatus according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a fingerprint image correcting apparatus according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the method includes the following steps: first, printing a pattern on the cover plate; and second, printing the first layer on the basis of the first step; the third step is On the basis of the second step, the second layer of the base color is screen printed; in the fourth step, the module obtained in the third step is attached to the chip with glue to form a fingerprint module.
  • the chip includes a plurality of fingerprint sensor units arranged in an array.
  • the silk screen logo layer will be partially embedded in the glue layer. Since the dielectric constants of the silk screen logo layer and the glue layer are inconsistent, the fingerprints from the cover surface to the chip are made.
  • the capacitance values between the sensor units are different. For example, the capacitance values at points A and B in Fig. 1 are different.
  • the fingerprint module collects the fingerprint signal
  • the data collected by the fingerprint sensor unit can be regarded as a result of the joint action of the finger pressing fingerprint and the capacitance between the surface of the cover plate and the fingerprint sensor unit in the chip, wherein the latter is specific to the specific The module is fixed.
  • the signal of the silk screen logo generated by the difference of the silk screen logo layer reaches the intensity equivalent to the fingerprint signal, so that the captured fingerprint image is superimposed with a clear logo image, so that the fingerprint image collected by the fingerprint sensor unit is not accurate. Need to eliminate the effects of silkscreen logo images.
  • the present invention proposes the following embodiments.
  • FIG. 2 is a schematic flow chart of a method for correcting a fingerprint image according to an embodiment of the present invention.
  • the method includes:
  • S21 Acquire information of a pre-stored non-fingerprint image.
  • the non-fingerprint image refers to a non-fingerprint image superimposed on the fingerprint image when the fingerprint image is acquired.
  • the non-fingerprint image may specifically be the logo image described above.
  • the present invention will take a logo image as an example. Due to silkscreen logo image on the cover After that, the information does not change. Therefore, the information of the non-fingerprint image can be calculated and stored before the smart terminal leaves the factory.
  • the information of the non-fingerprint image may be calculated and stored in a mass production test phase of the fingerprint module (referred to as a module). or,
  • the information of the non-fingerprint image may also be calculated and stored during the production test phase.
  • the information acquisition process of the non-fingerprint image may include:
  • Kr includes the difference caused by adding a logo image, it can be used as information for a logo image.
  • the calculation process of the gain coefficient Kr includes:
  • S31 Acquire first response data of each fingerprint sensor unit in the fingerprint module when there is no input amount, and use the first response data as a DC component of the corresponding fingerprint sensor unit.
  • the first response data is the DC component of the corresponding fingerprint sensor unit.
  • S32 Acquire an input quantity generated by the conductive plane test head for each fingerprint sensor unit, and acquire second response data of each fingerprint sensor unit at the same input quantity.
  • the conductive plane test head is a module capable of generating the same input amount for each fingerprint sensor unit in the fingerprint module.
  • the conductive plane test head is a conductive plane rubber head as an example.
  • the conductive planar rubber head may specifically be a rubber head having a flat surface and a conductive material, and the electric resistance is less than 800 ohms.
  • the plane of the conductive flat rubber head can be pressed on the fingerprint module, and the flat rubber head is well grounded so that the input amount X of each fingerprint sensor unit is the same.
  • the response data of each fingerprint sensor unit can be separately detected, and is distinguished from the first response data described above, and the response data at this time is referred to as second response data.
  • Kr is the gain factor
  • data1 is the second response data
  • C is the same input quantity
  • B is the DC component
  • the gain coefficient of each sensor unit can be calculated by the above operation, and the gain coefficient is used as information of the logo image for subsequent correction of the fingerprint image.
  • S22 Acquire a fingerprint image, and correct the fingerprint image according to the information of the non-fingerprint image.
  • CaliData is the data of the corrected fingerprint image
  • data2 is the data of the fingerprint image before correction
  • Kr is the gain coefficient
  • B is the DC component
  • C is the same input quantity
  • avgKr is the average value of the gain coefficients of all the fingerprint sensor units.
  • Step 1 Only Kr correction is made to eliminate the logo image.
  • the fingerprint signal can be regarded as the sum of the flat finger press and the finger fingerprint signal, wherein the finger fingerprint signal is different in the data generated by each fingerprint sensor unit, and is a valid signal; the flat finger presses the generated data for each fingerprint sensor.
  • the unit is identical, similar to the input value C of the conductive planar rubber head, both of which are equal input signals on each fingerprint sensor unit, affecting only the range of the entire data, the non-effective fingerprint signal, and the difference between the two A fixed value ⁇ .
  • the figure assumes that the plane of the conductive flat rubber head is higher than the hand press, and if it is lower than the calculation, it is exactly the same as the calculation above.
  • the Kr in the Kr*C in the above formula takes the average value avgKr of all the fingerprint sensor unit gains Kr in the module, and the final correction formula is as follows:
  • the non-fingerprint image portion in the collected fingerprint image may be removed, and the acquired fingerprint image is improved. Degree, thereby improving fingerprint recognition.
  • FIG. 5 is a schematic flow chart of a method for correcting a fingerprint image according to another embodiment of the present invention. This embodiment takes the example of acquiring and storing Kr in the mass production test phase of the fingerprint module.
  • the method in this embodiment includes:
  • S52 Convert the format of Kr into a storage format of the non-volatile memory, and write it into the non-volatile memory of the fingerprint module.
  • Kr can be a decimal, but usually the data stored in the non-volatile memory is an integer form, and therefore, the decimal is required to be converted into an integer for storage in the non-volatile storage memory.
  • mapping relationship between a decimal and an integer can be established, and the format of the Kr is converted into a storage format of the non-volatile memory according to the mapping relationship.
  • the S51-S52 can be executed during the mass production test phase of the fingerprint module.
  • S53 Read the Kr of the storage format from the non-volatile memory of the fingerprint module, and restore the Kr of the storage format to obtain the original Kr.
  • the reverse process of Kr converted to the storage format using the original Kr is restored from the Kr of the storage format to the original Kr.
  • CaliData is the data of the corrected fingerprint image
  • data2 is the data of the fingerprint image before correction
  • Kr is the gain coefficient
  • B is the DC component
  • C is the same input quantity
  • avgKr is the average value of the gain coefficients of all the fingerprint sensor units.
  • the correction of the fingerprint image can be achieved by the above correction formula.
  • the non-fingerprint image portion in the collected fingerprint image may be removed, and the acquired fingerprint image is improved. Degree, thereby improving fingerprint recognition.
  • Kr into Kr of the storage format of the non-volatile memory, it can be applied to the module mass production stage to calculate Kr and store it.
  • FIG. 6 is a schematic flow chart of a method for correcting a fingerprint image according to another embodiment of the present invention. This embodiment takes the example of acquiring and storing Kr in the whole production test phase.
  • the method in this embodiment includes:
  • the file system of the whole machine can store data in decimal form.
  • CaliData is the data of the corrected fingerprint image
  • data2 is the data of the fingerprint image before correction
  • Kr is the gain coefficient
  • B is the DC component
  • C is the same input quantity
  • avgKr is the average value of the gain coefficients of all the fingerprint sensor units.
  • the correction of the fingerprint image can be achieved by the above correction formula.
  • the information of the pre-stored non-fingerprint image is acquired, and the information is collected according to the information of the non-fingerprint image.
  • the fingerprint image is corrected, and the non-fingerprint image portion in the collected fingerprint image can be removed, and the accuracy of the collected fingerprint image is improved, thereby improving the fingerprint recognition effect.
  • Kr in the file system of the whole machine, it can be applied to calculate the Kr and store it in the whole production test phase.
  • FIG. 7 is a schematic structural diagram of a fingerprint image correcting apparatus according to an embodiment of the present invention.
  • the apparatus 70 includes an acquisition module 71 and a correction module 72.
  • the obtaining module 71 is configured to acquire information of a pre-stored non-fingerprint image
  • the correction module 72 is configured to collect a fingerprint image and correct the fingerprint image according to the information of the non-fingerprint image.
  • the apparatus 70 further includes:
  • a calculating module 73 configured to calculate information of a non-fingerprint image
  • the first storage module 74 is configured to convert the format of the information of the non-fingerprint image into a storage format of the non-volatile memory, and write the format into the non-volatile memory of the fingerprint module;
  • the obtaining module 71 is specifically configured to:
  • the apparatus 70 further includes:
  • a calculating module 73 configured to calculate information of a non-fingerprint image
  • a second storage module 75 configured to write information of the non-fingerprint image into the file system of the entire machine
  • the obtaining module 71 is specifically configured to: read information of the non-fingerprint image from the file system.
  • calculation module 73 is specifically used for:
  • the calculating module 73 is further specifically configured to:
  • the gain factor of each fingerprint sensor unit is calculated based on the second response data, the same input amount, and the DC component.
  • the calculation module 73 is configured to calculate, according to the second response data, the same input quantity, and the DC component, a calculation formula of a gain coefficient of each fingerprint sensor unit is:
  • Kr (data1-B)/C, where data1 is the second response data, C is the same input quantity, and B is the direct current component.
  • the conductive planar test head is a conductive planar rubber head.
  • the correction module 72 is configured to perform correction on the acquired fingerprint image according to the information of the non-fingerprint image.
  • the formula is:
  • CaliData is the data of the corrected fingerprint image
  • data2 is the data of the fingerprint image before correction
  • Kr is the gain coefficient
  • B is the DC component
  • C is the same input quantity
  • avgKr is the average value of the gain coefficients of all the fingerprint sensor units.
  • the device in this embodiment corresponds to the foregoing method embodiment. Therefore, the specific content of each module of the device in this embodiment can be referred to the related description in the method embodiment, and is not described in detail herein.
  • the non-fingerprint image portion in the collected fingerprint image may be removed, and the acquired fingerprint image is improved. Degree, thereby improving fingerprint recognition.
  • FIG. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the terminal 100 includes a housing 101, a processor 102, a memory 103, a circuit board 104, and a power supply circuit 105, wherein the circuit board 104 is disposed inside a space surrounded by the housing 101, and the processor 102 and the memory 103 are disposed.
  • a power supply circuit 105 for powering various circuits or devices of the terminal; a memory 103 for storing executable program code; the processor 102 operating and executing by reading executable program code stored in the memory
  • the program code corresponds to the program to perform the following steps:
  • the fingerprint image is acquired, and the fingerprint image is corrected according to the information of the non-fingerprint image.
  • another embodiment of the present invention further provides a non-volatile computer storage medium storing one or more modules for performing the following steps:
  • the fingerprint image is acquired, and the fingerprint image is corrected according to the information of the non-fingerprint image.
  • the non-fingerprint image portion in the collected fingerprint image may be removed, and the acquired fingerprint image is improved. Degree, thereby improving fingerprint recognition.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.
  • each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
  • the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
  • the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Data Mining & Analysis (AREA)
  • Library & Information Science (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Image Input (AREA)

Abstract

本发明提出一种指纹图像的校正方法、装置和终端,该指纹图像的校正方法包括:获取预存的非指纹图像的信息;采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。该方法能够去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。

Description

指纹图像的校正方法、装置和终端 技术领域
本发明涉及指纹识别技术领域,尤其涉及一种指纹图像的校正方法、装置和终端。
背景技术
指纹识别技术被广泛应用于智能终端、电子安防、公安指纹采集系统等相关领域,已经成为身份认证最主要的方案之一。目前指纹传感技术已基本属于智能终端的标准配置。通常在智能终端上,指纹传感技术是采用指纹模组实现的,指纹模组包括一组指纹传感器单元。为了标识指纹模组的位置,会在指纹模组对应的整机盖板上丝印图案,同时智能终端厂家也存在将自身logo图案丝印在指纹模组上的需求。
由于目前的丝印技术无法做到丝印层是平整的一层,其有logo图案的地方会凸起,需要嵌入到胶水层。丝印层与胶水层的介电常数无法做到完全相同,使得凸起处对应的指纹传感器单元与有其他的指纹传感器单元的差异性变得非常大,接近指纹信号所产生的差异,从而在指纹图像上叠加一个清晰的logo图像。这就造成了采集的指纹图像不仅包括指纹图像还包括了logo图像,使得采集的指纹图像不准确,影响指纹识别效果。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。
为此,本发明的一个目的在于提出一种指纹图像的校正方法,该方法可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
本发明的另一个目的在于提出一种指纹图像的校正装置。
本发明的另一个目的在于提出一种终端。
为达到上述目的,本发明第一方面实施例提出的指纹图像的校正方法,包括:获取预存的非指纹图像的信息;采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
本发明第一方面实施例提出的指纹图像的校正方法,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
为达到上述目的,本发明第二方面实施例提出的指纹图像的校正装置,包括:获取模块,用于获取预存的非指纹图像的信息;校正模块,用于采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
本发明第二方面实施例提出的指纹图像的校正装置,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
为达到上述目的,本发明第三方面实施例提出的终端,包括:壳体、处理器、存储器、电路板和电源电路,其中,电路板安置在壳体围成的空间内部,处理器和存储器设置在电路板上;电源电路,用于为终端的各个电路或器件供电;存储器用于存储可执行程序代码;处理器通过读取存储器中存储的可执行程序代码来运行与可执行程序代码对应的程序,以用于执行以下步骤:获取预存的非指纹图像的信息;采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
本发明第三方面实施例提出的终端,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
为达到上述目的,本发明第四方面实施例提出的非易失性计算机存储介质,包括:获取预存的非指纹图像的信息;采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
本发明第四方面实施例提出的非易失性计算机存储介质,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
本发明附加的方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本发明的实践了解到。
附图说明
本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解,其中:
图1是本发明实施例中盖板上丝印logo图案后指纹模组各层的示意图;
图2是本发明一个实施例提出的指纹图像的校正方法的流程示意图;
图3是本发明实施例中Kr的计算流程示意图;
图4是本发明实施例中各平面示意图;
图5是本发明另一个实施例提出的指纹图像的校正方法的流程示意图;
图6是本发明另一个实施例提出的指纹图像的校正方法的流程示意图;
图7是本发明一个实施例提出的指纹图像的校正装置的结构示意图;
图8是本发明另一个实施例提出的指纹图像的校正装置的结构示意图;
图9是本发明另一个实施例提出的指纹图像的校正装置的结构示意图;
图10是本发明一个实施例提出的终端的结构示意图。
具体实施方式
下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的模块或具有相同或类似功能的模块。下面通过参考附图描述的实施例是示例性的,仅用于解释本发明,而不能理解为对本发明的限制。相反,本发明的实施例包括落入所附加权利要求书的精神和内涵范围内的所有变化、修改和等同物。
图1是本发明实施例中在盖板(cover)上丝印logo图案后指纹模组各层的示意图。在生成上述的指纹模组时,包括如下步骤:第一步,在盖板上丝印一层图案;第二步,在第一步的基础上再丝印第一层底色;第三步,在第二步的基础上再丝印第二层底色;第四步,用胶水将第三步得到的模块贴于芯片上,制作成指纹模组。其中,芯片中包含阵列排布的多个指纹传感器单元。
如图1所示,当在盖板上丝印logo图案后,丝印logo层将有部分嵌入到胶水层,由于丝印logo层和胶水层的介电常数不一致,使得从盖板表面到芯片中各指纹传感器单元之间的电容值不同,例如,图1中A、B两点的电容值不同。当指纹模组采集指纹信号时,指纹传感器单元采集到的数据,可看作是手指按压的指纹、盖板表面到芯片中指纹传感器单元之间电容的共同作用的结果,其中后者相对于特定的模组来说是固定的。由于丝印logo层所带来的差异而生成的丝印logo的信号达到了与指纹信号相当的强度,使得采集到的指纹图像中叠加了清晰的logo图像,使得指纹传感器单元采集的指纹图像并不准确,需要消除丝印logo图像的影响。
为了消除丝印logo图像的影响,本发明提出如下的实施例。
图2是本发明一个实施例提出的指纹图像的校正方法的流程示意图。
参见图2,该方法包括:
S21:获取预存的非指纹图像的信息。
其中,非指纹图像是指采集指纹图像时,叠加在指纹图像上的非指纹图像。非指纹图像具体可以是上述的logo图像。本发明将以logo图像为例。由于在盖板上丝印logo图像 后其信息不会改变,因此,非指纹图像的信息可以是在智能终端出厂前计算并存储的。
一些实施例中,非指纹图像的信息可以是在指纹模组(简称模组)量产测试阶段计算并存储的。或者,
一些实施例中,非指纹图像的信息也可以是在整机生产测试阶段计算并存储的。
具体的应用场景下的示例可以参见后续描述。
不论是在指纹模组量产测试阶段还是在整机生产测试阶段,非指纹图像的信息的获取流程都可以包括:
计算指纹模组中每个指纹传感器单元的增益系数,将增益系数作为非指纹图像的信息。
具体的,可以将每个指纹传感器单元抽象为一个表达式是Y=Kr*X+B的线性系统,X为指纹传感器单元的检测信号(模组表面的输入);Y为指纹传感器单元输出的数据;B值为指纹传感器单元自身电路的直流分量,即没有按压输入量时的响应数据;Kr为每个指纹传感器单元的增益系数。
由于Kr包括了加logo图像所带来的差异性,因此可作为logo图像的信息。
参见图3,增益系数Kr的计算流程包括:
S31:获取指纹模组中每个指纹传感器单元在无输入量时的第一响应数据,将第一响应数据作为对应指纹传感器单元的直流分量。
根据上述的公式Y=Kr*X+B可知,当无输入量时,也就是X=0时,Y=B,则当X=0时的响应数据(为了与后续的响应数据区分,这里称为第一响应数据)就是相应指纹传感器单元的直流分量。
S32:获取导电平面测试头产生的对每个指纹传感器单元都相同的输入量,并获取在相同的输入量时每个指纹传感器单元的第二响应数据。
导电平面测试头是能够对指纹模组中每个指纹传感器单元产生相同输入量的模块,本实施例中,以导电平面测试头是导电平面橡胶头为例。具体的,该导电平面橡胶头可以具体是有一面是平面的橡胶头、内含导电材料,电阻小于800欧姆。
其中,可以用导电平面橡胶头的平面按压在指纹模组上,并保持平面橡胶头良好接地,以使得每个指纹传感器单元的输入量X相同。
在每个指纹传感器单元的输入量都相同的情况下,可以分别检测每个指纹传感器单元的响应数据,与上述的第一响应数据区分,此时的响应数据称为第二响应数据。
S33:根据第二响应数据、相同的输入量和直流分量,计算每个指纹传感器单元的增益系数。
计算公式是:
Kr=(data1-B)/C;
其中,Kr是增益系数,data1是第二响应数据,C是相同的输入量,B是直流分量。
因此,通过上述运算可以计算出每个传感器单元的增益系数,并将该增益系数作为logo图像的信息,以用于后续的指纹图像的校正。
S22:采集指纹图像,并根据非指纹图像的信息,对指纹图像进行校正。
采用的校正公式是:
CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C
其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
上述的校正公式的推算原理如下:
步骤1、只做Kr修正,消除logo图像。
根据已知的Kr由Y=KrX+B求出X,由于只做Kr修正,因此在求得X之后重新加回直流分量B,可得到如下公式。由于Kr中包括了假定输入量C的影响,CaliData’是被引入C输入量的响应数据。
CaliData’=(data2-B)/Kr+B。
步骤2、消除C值带入的影响
指纹信号其实可看作是平面的手指按压与手指指纹信号之和,其中手指指纹信号在各指纹传感器单元上产生的数据不同,为有效信号;平面的手指按压产生的数据,对于每个指纹传感器单元来说是完全相同的,类似于导电平面橡胶头的输入值C,二者均是各个指纹传感器单元上的等量输入信号,仅影响整体数据的范围非有效指纹信号,且二者均相差一个固定值Δ。如图4所示,可根据Δ1=Δ2的关系来进行平面校正,消除C值引入的影响。图中假定导电平面橡胶头的平面高于手按压,若低于时计算与高于时的计算完全相同。
图4中各平面的表达式可以如表1所示:
表1
Figure PCTCN2016076998-appb-000001
Δ1=Δ2→导电平面橡胶头按压校正后平面-手按压校正后平面=导电平面橡胶头按压校正前平面-手按压校正前平面,再将表1中各表达式代入可以得到如下计算公式:
C-(data2-B)/Kr=Kr*C+B-CaliData
移项化简即可得到
CaliData=(data2-B)/Kr+B+Kr*C-C
因为是要改变整体数据的范围,因此上式中Kr*C中的Kr取模组中所有指纹传感器单元增益Kr的平均值avgKr,即可得到最终修正公式如下:
CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C
本实施例中,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
进一步的,上述存储Kr可以应用在不同阶段。分别如下实施例所示。
图5是本发明另一个实施例提出的指纹图像的校正方法的流程示意图。本实施例以在指纹模组量产测试阶段获取并存储Kr为例。
参见图5,本实施例的方法包括:
S51:计算Kr。
其中,Kr的计算流程可以如图3所示,在此不再详细说明。
S52:将Kr的格式转换为非易失性存储器的存贮格式,并写入指纹模组的非易失性存储器中。
根据上述Kr的计算流程可知,Kr可以是小数,但是,通常非易失性存储器中存储的数据是整数形式,因此,需要将小数转换为整数,以存储在非易失性存贮存储器中。
具体的,可以建立小数与整数之间的映射关系,根据该映射关系将Kr的格式转换为非易失性存储器的存贮格式。
可以理解的是,S51-S52可以在指纹模组量产测试阶段执行。
之后,在整机使用阶段可以再执行如下流程:
S53:从指纹模组的非易失性存储器中,读取上述存贮格式的Kr,并将该存贮格式的Kr进行还原,得到原始的Kr。
例如,采用原始的Kr转换为存贮格式的Kr的逆向过程,从存贮格式的Kr恢复为原始的Kr。
S54:采集指纹图像,并根据原始的Kr,对采集的指纹图像进行校正。
其中,采用的校正公式是:
CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C。
其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
通过上述的校正公式可以实现指纹图像的校正。
本实施例中,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。进一步的,通过将Kr转换为非易失性存储器的存贮格式的Kr,可以适用于模组量产阶段计算Kr并存储。
图6是本发明另一个实施例提出的指纹图像的校正方法的流程示意图。本实施例以在整机生产测试阶段获取并存储Kr为例。
参见图6,本实施例的方法包括:
S61:计算Kr。
其中,Kr的计算流程可以如图3所示,在此不再详细说明。
S62:将Kr写入整机的文件系统中。
其中,整机的文件系统中可以存储小数形式的数据。
可以理解的是,S61-S62可以在整机生产测试阶段执行。
之后,在整机使用阶段可以再执行如下流程:
S63:从整机的文件系统中,读取Kr。
S64:采集指纹图像,并根据读取的Kr,对采集的指纹图像进行校正。
其中,采用的校正公式是:
CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C。
其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
通过上述的校正公式可以实现指纹图像的校正。
本实施例中,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的 指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。进一步的,通过将Kr存储到整机的文件系统中,可以适用于整机生产测试阶段计算Kr并存储。
图7是本发明一个实施例提出的指纹图像的校正装置的结构示意图。参见图7,该装置70包括:获取模块71和校正模块72。
获取模块71用于获取预存的非指纹图像的信息;
校正模块72用于采集指纹图像,并根据非指纹图像的信息,对指纹图像进行校正。
一些实施例中,参见图8,该装置70还包括:
计算模块73,用于计算非指纹图像的信息;
第一存储模块74,用于将非指纹图像的信息的格式转换为非易失性存储器的存贮格式,并写入指纹模组的非易失性存储器中;
相应的,获取模块71具体用于:
从指纹模组的非易失性存储器中,读取该存贮格式的非指纹图像的信息;以及,将该存贮格式的非指纹图像的信息进行还原,得到原始的非指纹图像的信息。
一些实施例中,参见图9,该装置70还包括:
计算模块73,用于计算非指纹图像的信息;
第二存储模块75,用于将非指纹图像的信息写入整机的文件系统中;
相应的,获取模块71具体用于:从文件系统中,读取非指纹图像的信息。
不论是图8或图9,其中的计算模块73具体用于:
计算指纹模组中每个指纹传感器单元的增益系数,将增益系数作为非指纹图像的信息。
可选的,计算模块73进一步具体用于:
获取指纹模组中每个指纹传感器单元在无输入量时的第一响应数据,将第一响应数据作为对应指纹传感器单元的直流分量;
获取导电平面测试头产生的对每个指纹传感器单元都相同的输入量,并获取在相同的输入量时每个指纹传感器单元的第二响应数据;
根据第二响应数据、相同的输入量和直流分量,计算每个指纹传感器单元的增益系数。
可选的,计算模块73用于根据第二响应数据、相同的输入量、直流分量,计算每个指纹传感器单元的增益系数的计算公式是:
Kr=(data1-B)/C,其中,data1是第二响应数据,C是相同的输入量,B是直流分量。
可选的,导电平面测试头是导电平面橡胶头。
可选的,校正模块72用于根据非指纹图像的信息,对采集的指纹图像进行校正的计算 公式是:
CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C。
其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
可以理解的是,本实施例的装置与上述方法实施例对应,因此,本实施例装置的各模块的具体内容可以参见方法实施例中的相关描述,在此不再详细说明。
本实施例中,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
图10是本发明一个实施例提出的终端的结构示意图。参见图10,终端100包括:壳体101、处理器102、存储器103、电路板104和电源电路105,其中,电路板104安置在壳体101围成的空间内部,处理器102和存储器103设置在电路板104上;电源电路105,用于为终端的各个电路或器件供电;存储器103用于存储可执行程序代码;处理器102通过读取存储器中存储的可执行程序代码来运行与可执行程序代码对应的程序,以用于执行以下步骤:
获取预存的非指纹图像的信息;
采集指纹图像,并根据非指纹图像的信息,对指纹图像进行校正。
另外,本发明另一实施例还提出了一种非易失性计算机存储介质,非易失性计算机存储介质存储有一个或者多个模块,以用于执行以下步骤:
获取预存的非指纹图像的信息;
采集指纹图像,并根据非指纹图像的信息,对指纹图像进行校正。
可以理解的是,上述实施例的终端以及非易失性计算机存储介质的具体内容可以参见方法实施例中的相关描述,在此不再详细说明。
本实施例中,通过获取预存的非指纹图像的信息,并根据非指纹图像的信息对采集的指纹图像进行校正,可以去除采集的指纹图像中的非指纹图像部分,提高采集的指纹图像的准确度,从而提高指纹识别效果。
需要说明的是,在本发明的描述中,术语“第一”、“第二”等仅用于描述目的,而不能理解为指示或暗示相对重要性。此外,在本发明的描述中,除非另有说明,“多个”的含义是指至少两个。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为,表示包括一个 或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分,并且本发明的优选实施方式的范围包括另外的实现,其中可以不按所示出或讨论的顺序,包括根据所涉及的功能按基本同时的方式或按相反的顺序,来执行功能,这应被本发明的实施例所属技术领域的技术人员所理解。
应当理解,本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中,多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如,如果用硬件来实现,和在另一实施方式中一样,可用本领域公知的下列技术中的任一项或他们的组合来实现:具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路,具有合适的组合逻辑门电路的专用集成电路,可编程门阵列(PGA),现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,该程序在执行时,包括方法实施例的步骤之一或其组合。
此外,在本发明各个实施例中的各功能单元可以集成在一个处理模块中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器,磁盘或光盘等。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (18)

  1. 一种指纹图像的校正方法,其特征在于,包括:
    获取预存的非指纹图像的信息;
    采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
  2. 根据权利要求1所述的方法,其特征在于,在所述获取预存的非指纹图像的信息之前还包括:
    计算非指纹图像的信息;
    将所述非指纹图像的信息的格式转换为非易失性存储器的存贮格式,并写入指纹模组的非易失性存储器中;
    所述获取预存的非指纹图像的信息,包括:
    从指纹模组的非易失性存储器中,读取所述存贮格式的非指纹图像的信息;
    将所述存贮格式的非指纹图像的信息进行还原。
  3. 根据权利要求1所述的方法,其特征在于,在所述获取预存的非指纹图像的信息之前还包括:
    计算非指纹图像的信息;
    将所述非指纹图像的信息写入整机的文件系统中;
    所述获取预存的非指纹图像的信息,包括:
    从所述文件系统中,读取所述非指纹图像的信息。
  4. 根据权利要求2或3所述的方法,其特征在于,所述计算非指纹图像的信息,包括:
    计算指纹模组中每个指纹传感器单元的增益系数,将所述增益系数作为非指纹图像的信息。
  5. 根据权利要求4所述的方法,其特征在于,所述计算指纹模组中每个指纹传感器单元的增益系数,包括:
    获取指纹模组中每个指纹传感器单元在无输入量时的第一响应数据,将所述第一响应数据作为对应指纹传感器单元的直流分量;
    获取导电平面测试头产生的对每个指纹传感器单元都相同的输入量,并获取在所述相同的输入量时每个指纹传感器单元的第二响应数据;
    根据所述第二响应数据、所述相同的输入量和所述直流分量,计算每个指纹传感器单元的增益系数。
  6. 根据权利要求5所述的方法,其特征在于,所述根据所述第二响应数据、所述相同 的输入量和所述直流分量,计算每个指纹传感器单元的增益系数的计算公式是:
    Kr=(data1-B)/C,其中,data1是第二响应数据,C是相同的输入量,B是直流分量。
  7. 根据权利要求5所述的方法,其特征在于,所述导电平面测试头是导电平面橡胶头。
  8. 根据权利要求6所述的方法,其特征在于,所述根据非指纹图像的信息,对所述指纹图像进行校正的计算公式是:
    CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C。
    其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
  9. 一种指纹图像的校正装置,其特征在于,包括:
    获取模块,用于获取预存的非指纹图像的信息;
    校正模块,用于采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
  10. 根据权利要求9所述的装置,其特征在于,还包括:
    计算模块,用于计算非指纹图像的信息;
    第一存储模块,用于将所述非指纹图像的信息的格式转换为非易失性存储器的存贮格式,并写入指纹模组的非易失性存储器中;
    所述获取模块具体用于:
    从指纹模组的非易失性存储器中,读取所述存贮格式的非指纹图像的信息;
    将所述存贮格式的非指纹图像的信息进行还原。
  11. 根据权利要求9所述的装置,其特征在于,还包括:
    计算模块,用于计算非指纹图像的信息;
    第二存储模块,用于将所述非指纹图像的信息写入整机的文件系统中;
    所述获取模块具体用于:
    从所述文件系统中,读取所述非指纹图像的信息。
  12. 根据权利要求10或11所述的装置,其特征在于,所述计算模块具体用于:
    计算指纹模组中每个指纹传感器单元的增益系数,将所述增益系数作为非指纹图像的信息。
  13. 根据权利要求12所述的装置,其特征在于,所述计算模块进一步具体用于:
    获取指纹模组中每个指纹传感器单元在无输入量时的第一响应数据,将所述第一响应数据作为对应指纹传感器单元的直流分量;
    获取导电平面测试头产生的对每个指纹传感器单元都相同的输入量,并获取在所述相同的输入量时每个指纹传感器单元的第二响应数据;
    根据所述第二响应数据、所述相同的输入量和所述直流分量,计算每个指纹传感器单元的增益系数。
  14. 根据权利要求13所述的装置,其特征在于,所述计算模块用于根据所述第二响应数据、所述相同的输入量和所述直流分量,计算每个指纹传感器单元的增益系数的计算公式是:
    Kr=(data1-B)/C,其中,data1是第二响应数据,C是相同的输入量,B是直流分量。
  15. 根据权利要求13所述的装置,其特征在于,所述导电平面测试头是导电平面橡胶头。
  16. 根据权利要求14所述的装置,其特征在于,所述校正模块用于根据非指纹图像的信息,对所述指纹图像进行校正的计算公式是:
    CaliData=(data2-B+Kr*B)/Kr+C*avgKr-C。
    其中,CaliData是校正后指纹图像的数据,data2是校正前指纹图像的数据,Kr是增益系数,B是直流分量,C是相同的输入量,avgKr是所有指纹传感器单元的增益系数的平均值。
  17. 一种终端,其特征在于,包括:壳体、处理器、存储器、电路板和电源电路,其中,电路板安置在壳体围成的空间内部,处理器和存储器设置在电路板上;电源电路,用于为终端的各个电路或器件供电;存储器用于存储可执行程序代码;处理器通过读取存储器中存储的可执行程序代码来运行与可执行程序代码对应的程序,以用于执行以下步骤:
    获取预存的非指纹图像的信息;
    采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
  18. 一种非易失性计算机存储介质,其特征在于,所述非易失性计算机存储介质存储有一个或者多个模块,以用于执行以下步骤:
    获取预存的非指纹图像的信息;
    采集指纹图像,并根据所述非指纹图像的信息,对所述指纹图像进行校正。
PCT/CN2016/076998 2016-03-22 2016-03-22 指纹图像的校正方法、装置和终端 WO2017161501A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2016/076998 WO2017161501A1 (zh) 2016-03-22 2016-03-22 指纹图像的校正方法、装置和终端
EP16894856.0A EP3276531A4 (en) 2016-03-22 2016-03-22 Method and device for correcting fingerprint image and terminal
KR1020177030869A KR101915426B1 (ko) 2016-03-22 2016-03-22 지문 이미지의 교정 방법, 장치 및 단말기
CN201680000664.5A CN106164933B (zh) 2016-03-22 2016-03-22 指纹图像的校正方法、装置和终端
US15/790,782 US10706254B2 (en) 2016-03-22 2017-10-23 Method and apparatus for calibrating fingerprint image, and terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/076998 WO2017161501A1 (zh) 2016-03-22 2016-03-22 指纹图像的校正方法、装置和终端

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/790,782 Continuation US10706254B2 (en) 2016-03-22 2017-10-23 Method and apparatus for calibrating fingerprint image, and terminal

Publications (1)

Publication Number Publication Date
WO2017161501A1 true WO2017161501A1 (zh) 2017-09-28

Family

ID=57341017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/076998 WO2017161501A1 (zh) 2016-03-22 2016-03-22 指纹图像的校正方法、装置和终端

Country Status (5)

Country Link
US (1) US10706254B2 (zh)
EP (1) EP3276531A4 (zh)
KR (1) KR101915426B1 (zh)
CN (1) CN106164933B (zh)
WO (1) WO2017161501A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112417951A (zh) * 2020-09-30 2021-02-26 北京极豪科技有限公司 指纹图像校准方法、装置、电子设备及存储介质

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10713466B2 (en) * 2014-03-07 2020-07-14 Egis Technology Inc. Fingerprint recognition method and electronic device using the same
KR101915426B1 (ko) * 2016-03-22 2018-11-05 선전 구딕스 테크놀로지 컴퍼니, 리미티드 지문 이미지의 교정 방법, 장치 및 단말기
CN108701218B (zh) * 2017-02-03 2021-02-12 华为技术有限公司 一种指纹采集的方法、装置及终端
GB201704847D0 (en) * 2017-03-27 2017-05-10 Zwipe As Callibration method
US11232274B2 (en) 2017-03-10 2022-01-25 Fingerprint Cards Anacatum Ip Ab Suppressing impairment data in fingerprint images
EP3649578A4 (en) * 2017-07-07 2021-04-07 Fingerprint Cards AB METHOD OF A FINGERPRINT SCREENING SYSTEM TO ENABLE THE AUTHENTICATION OF A USER ON THE BASIS OF FINGERPRINT DATA
CN107657240B (zh) * 2017-10-09 2020-11-24 上海天马微电子有限公司 一种显示装置及其指纹识别校准方法、以及电子设备
CN107742111B (zh) * 2017-11-03 2021-11-02 北京小米移动软件有限公司 身份识别方法及装置、存储介质
CN108182424B (zh) * 2018-01-29 2020-05-22 上海天马微电子有限公司 显示装置及其指纹识别方法
EP3850534A4 (en) 2018-09-12 2022-04-27 Fingerprint Cards Anacatum IP AB RECONSTRUCTION OF FINGERPRINT SUB-IMAGES
CN109711308B (zh) * 2018-12-19 2021-06-01 北京集创北方科技股份有限公司 指纹组件、电子设备及其指纹信号处理方法
WO2020210954A1 (zh) * 2019-04-15 2020-10-22 深圳市汇顶科技股份有限公司 用于校准图像的方法、装置和电子设备
CN110097031B (zh) * 2019-05-14 2023-07-25 上海菲戈恩微电子科技有限公司 一种屏下光学指纹图像的校正方法和装置
CN110187806B (zh) * 2019-05-22 2023-04-18 Oppo广东移动通信有限公司 指纹模板录入方法及相关装置
WO2020232696A1 (zh) * 2019-05-23 2020-11-26 深圳市汇顶科技股份有限公司 光学指纹识别的校准方法、装置和电子设备
CN113723167B (zh) * 2021-04-02 2024-07-02 荣耀终端有限公司 一种指纹识别方法及电子设备
US11657643B1 (en) * 2022-01-17 2023-05-23 Novatek Microelectronics Corp. Fingerprint sensing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126631B1 (en) * 1999-06-30 2006-10-24 Intel Corporation Sensing with defective cell detection
CN101605399A (zh) * 2008-06-13 2009-12-16 英华达(上海)电子有限公司 一种实现手语识别的移动终端及方法
CN101853383A (zh) * 2010-05-17 2010-10-06 清华大学 高分辨率掌纹方向场提取方法
CN102208021A (zh) * 2011-07-21 2011-10-05 中国人民解放军国防科学技术大学 一种指纹图像分割方法
CN106164933A (zh) * 2016-03-22 2016-11-23 深圳市汇顶科技股份有限公司 指纹图像的校正方法、装置和终端

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07122903B2 (ja) * 1987-05-30 1995-12-25 川崎製鉄株式会社 画像の背景消去方法
JP3590671B2 (ja) 1995-05-23 2004-11-17 ティーエム・ティーアンドディー株式会社 負荷時タップ切換装置
US6125192A (en) * 1997-04-21 2000-09-26 Digital Persona, Inc. Fingerprint recognition system
US5995642A (en) * 1997-06-30 1999-11-30 Aetex Biometric Corporation Method for automatic fingerprint classification
US6068184A (en) * 1998-04-27 2000-05-30 Barnett; Donald A. Security card and system for use thereof
US6658164B1 (en) * 1999-08-09 2003-12-02 Cross Match Technologies, Inc. Calibration and correction in a fingerprint scanner
FR2826151B1 (fr) * 2001-06-13 2004-12-17 Sagem Procede de reconnaissance d'empreintes digitales par coloration et systeme informatique pour mettre en oeuvre ledit procede
JP2003075135A (ja) * 2001-08-31 2003-03-12 Nec Corp 指紋画像入力装置および指紋画像による生体識別方法
JP4546168B2 (ja) * 2004-06-28 2010-09-15 富士通株式会社 生体認証システムの登録方法、生体認証システム及びそのプログラム
US8577091B2 (en) * 2009-07-17 2013-11-05 The University Of Maryland Method and apparatus for authenticating biometric scanners
US8547111B2 (en) * 2010-07-06 2013-10-01 Sharp Kabushiki Kaisha Array element circuit and active matrix device
US8824792B2 (en) * 2012-07-25 2014-09-02 Ib Korea Ltd. Image element brightness adjustment
US9576176B2 (en) * 2013-07-22 2017-02-21 Apple Inc. Noise compensation in a biometric sensing device
US9552525B2 (en) * 2013-09-08 2017-01-24 Apple Inc. Noise reduction in biometric images
CN105868679B (zh) * 2015-01-23 2017-11-28 深圳市汇顶科技股份有限公司 指纹信息的动态更新方法和指纹识别装置
CN105205470A (zh) * 2015-09-29 2015-12-30 上海箩箕技术有限公司 指纹成像模组
CN105243370A (zh) * 2015-10-19 2016-01-13 广东欧珀移动通信有限公司 一种指纹识别方法、指纹识别装置和移动终端
US11080546B2 (en) * 2017-10-13 2021-08-03 Fingerprint Cards Ab Method and system for fingerprint image enhancement
JP7122903B2 (ja) * 2018-07-27 2022-08-22 マクセル株式会社 路面映像投射装置及び車両用灯具
CN109711308B (zh) * 2018-12-19 2021-06-01 北京集创北方科技股份有限公司 指纹组件、电子设备及其指纹信号处理方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7126631B1 (en) * 1999-06-30 2006-10-24 Intel Corporation Sensing with defective cell detection
CN101605399A (zh) * 2008-06-13 2009-12-16 英华达(上海)电子有限公司 一种实现手语识别的移动终端及方法
CN101853383A (zh) * 2010-05-17 2010-10-06 清华大学 高分辨率掌纹方向场提取方法
CN102208021A (zh) * 2011-07-21 2011-10-05 中国人民解放军国防科学技术大学 一种指纹图像分割方法
CN106164933A (zh) * 2016-03-22 2016-11-23 深圳市汇顶科技股份有限公司 指纹图像的校正方法、装置和终端

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3276531A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112417951A (zh) * 2020-09-30 2021-02-26 北京极豪科技有限公司 指纹图像校准方法、装置、电子设备及存储介质

Also Published As

Publication number Publication date
EP3276531A4 (en) 2018-04-18
KR20170131621A (ko) 2017-11-29
US20180060643A1 (en) 2018-03-01
CN106164933B (zh) 2019-06-07
KR101915426B1 (ko) 2018-11-05
US10706254B2 (en) 2020-07-07
CN106164933A (zh) 2016-11-23
EP3276531A1 (en) 2018-01-31

Similar Documents

Publication Publication Date Title
WO2017161501A1 (zh) 指纹图像的校正方法、装置和终端
TWI652628B (zh) 指紋識別方法及電子裝置
CN107092385B (zh) 针对温度的力校准
CN108509909B (zh) 一种指纹采集方法及装置
TWI727040B (zh) 用於雜訊偵測的指紋感測裝置及其中的方法
US9576176B2 (en) Noise compensation in a biometric sensing device
US9445079B2 (en) Calibration of a 3D camera
JP6538864B2 (ja) 指紋検出回路及び電子機器
WO2020238656A1 (zh) 校准方法及相关设备
CN108713202A (zh) 用于指纹识别的方法、装置和电子设备
US20160034739A1 (en) Biometric identification device having sensor electrodes with masking function
CN107305445B (zh) 触控杂讯滤除的方法以及触控装置
CN103809799B (zh) 触控面板的异物侦测方法
US20120011704A1 (en) Computing - system identifier using software extraction of manufacturing variability
CN109711308B (zh) 指纹组件、电子设备及其指纹信号处理方法
CN107851187A (zh) 指纹传感器的有缺陷的电容式传感器元件的校正与检测
TWI730183B (zh) 具備不同的電容組態的指紋感測
TW201736814A (zh) 壓力測量方法以及壓力測量裝置
CN110291534A (zh) 消除指纹图像中的损伤数据
CN106971139B (zh) 电容式传感器、电容式传感装置、以及电子设备
TWI761001B (zh) 壓力校正方法及實施該方法的觸控處理裝置與觸控系統
CN108596127A (zh) 一种指纹识别方法、身份验证方法及装置和身份核验机
EP3828676B1 (en) Signal detection method and electronic device
TW201843576A (zh) 輸入裝置與其控制方法及程式
WO2019153319A1 (zh) 指纹检测电路、指纹识别装置以及终端设备

Legal Events

Date Code Title Description
REEP Request for entry into the european phase

Ref document number: 2016894856

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20177030869

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE