CN110674691A - Fingerprint identification and verification method and device and printing equipment - Google Patents
Fingerprint identification and verification method and device and printing equipment Download PDFInfo
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- CN110674691A CN110674691A CN201910779855.1A CN201910779855A CN110674691A CN 110674691 A CN110674691 A CN 110674691A CN 201910779855 A CN201910779855 A CN 201910779855A CN 110674691 A CN110674691 A CN 110674691A
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000007639 printing Methods 0.000 title claims abstract description 56
- 238000012795 verification Methods 0.000 title abstract description 19
- 230000006870 function Effects 0.000 claims description 23
- 230000015654 memory Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1222—Increasing security of the print job
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1237—Print job management
- G06F3/1238—Secure printing, e.g. user identification, user rights for device usage, unallowed content, blanking portions or fields of a page, releasing held jobs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2141—Access rights, e.g. capability lists, access control lists, access tables, access matrices
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a fingerprint identification method, a fingerprint verification method, a fingerprint identification device and a printing device, wherein the fingerprint identification method comprises the following steps: scanning a scanning area of the terminal equipment to generate a fingerprint image of a user; analyzing the definition of the fingerprint image, and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value; when the definition of the fingerprint image is greater than or equal to a preset threshold value, converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database; by implementing the invention, the fingerprint identification is carried out on the user by utilizing the scanning area of the printing equipment, the identified fingerprint can be used for judging whether the user has the authority to use the printing equipment, and the fingerprint identification function can be realized without installing a fingerprint identification device on the printing equipment, thereby solving the problem that the cost of the printing equipment is increased because the fingerprint identification device is independently installed on the printing equipment.
Description
Technical Field
The invention relates to the technical field of intelligent printing, in particular to a fingerprint identification and verification method, a fingerprint identification and verification device and printing equipment.
Background
With the increasing awareness of information security, governments and large enterprises expect safer, more stable and more efficient identification techniques. Biological identification technology, especially fingerprint identification technology, is widely concerned by people, access limitation is carried out on each device by utilizing the fingerprint identification technology, and leakage of important information is avoided. For example, access restriction is performed on printing equipment of a company or a department, so that an irrelevant person is prevented from acquiring important files to be printed in the printing equipment, access restriction can be performed on the printing equipment by arranging a fingerprint identification device on the printing equipment, the existing fingerprint identification device adopts a capacitive sensor or an ultrasonic sensor, but the cost of the printing equipment is increased due to the fact that the fingerprint identification device is independently arranged on the printing equipment.
Disclosure of Invention
In view of this, embodiments of the present invention provide a fingerprint identification method and apparatus, a fingerprint verification method and apparatus, and a printing device, so as to solve the problem that the cost of the printing device is increased when a fingerprint identification apparatus is installed on the printing device separately.
According to a first aspect, an embodiment of the present invention provides a fingerprint identification method, including: scanning a scanning area of the terminal equipment to generate a fingerprint image of a user; analyzing the definition of the fingerprint image, and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value; and when the definition of the fingerprint image is greater than or equal to the preset threshold, converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database.
With reference to the first aspect, in a first implementation manner of the first aspect, when the definition of the fingerprint image is smaller than the preset threshold, the user is prompted to re-enter the fingerprint image through a display screen of the terminal device.
With reference to the first aspect, in a second implementation manner of the first aspect, generating a fingerprint image of a user by using a scanning area scan of a terminal device includes: an operation of scanning the user's finger in the scanning area from a first position to a second position using the scanning area; and generating a fingerprint image of the user according to the operation scanning.
With reference to the first aspect, in a third implementation manner of the first aspect, scanning a scanning area of a terminal device to generate a fingerprint image of a user includes: an operation of scanning the finger of the user in the scanning area using the scanning area to stop for a preset time; and generating a fingerprint image of the user according to the operation scanning.
According to a second aspect, an embodiment of the present invention provides a fingerprint verification method, including: scanning a scanning area of the terminal equipment to generate a second fingerprint image of the user; judging whether the second fingerprint image is the same as a reference fingerprint image in a fingerprint database; a reference fingerprint image in the fingerprint database is generated according to the first aspect or the fingerprint identification method described in any one of the embodiments of the first aspect; and when the second fingerprint image is the same as the reference fingerprint image, starting the corresponding function of the terminal equipment.
With reference to the second aspect, in a first implementation manner of the second aspect, when the second fingerprint image is different from the reference fingerprint image in the fingerprint database, the corresponding function of the terminal device is turned off.
According to a third aspect, an embodiment of the present invention provides a fingerprint identification device, including: the first generation module is used for scanning and generating a fingerprint image of a user by using a scanning area of the terminal equipment; the first judgment module is used for analyzing the definition of the fingerprint image and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value or not; and the fingerprint conversion module is used for converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database when the definition of the fingerprint image is greater than or equal to the preset threshold.
According to a fourth aspect, an embodiment of the present invention provides a fingerprint authentication device, including: the second generation module is used for generating a second fingerprint image of the user by scanning the scanning area of the terminal equipment; a second determining module, configured to determine whether the second fingerprint image is the same as a reference fingerprint image in a fingerprint database, where the reference fingerprint image in the fingerprint database is generated according to the first aspect or the fingerprint identification method described in any one of the embodiments of the first aspect; and the function control module is used for starting the corresponding function of the terminal equipment when the second fingerprint image is the same as the reference fingerprint image.
According to a fifth aspect, an embodiment of the present invention provides a printing apparatus including: a scanning module, a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing therein computer instructions, and the processor executing the computer instructions to perform the method for fingerprint identification as described in the first aspect or any one of the embodiments of the first aspect, or to perform the method for fingerprint verification as described in the second aspect or the first embodiment of the second aspect.
According to a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, which is characterized by storing computer instructions for executing the method for fingerprint identification described in the first aspect or any one of the embodiments of the first aspect, or executing the method for fingerprint verification described in the second aspect or the first embodiment of the second aspect.
Compared with the prior art, the invention has the following beneficial effects: the fingerprint of the user is identified and stored through the scanning module on the printing equipment, when the user inputs the fingerprint again, the fingerprint is compared in the fingerprint database according to the input fingerprint, whether the user has the authority of using the printing equipment is determined, the fingerprint identification device does not need to be installed on the printing equipment, the practical authority of the printing equipment can be limited through fingerprint identification, the leakage of important information is avoided, and the problem that the cost of the printing equipment is increased due to the fact that the fingerprint identification device is installed on the printing equipment alone can be solved.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 shows a block flow diagram of a fingerprint identification method in an embodiment of the invention;
FIG. 2 is a diagram illustrating a scanned fingerprint in a fingerprint recognition method according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a scanned fingerprint in a fingerprint recognition method according to an embodiment of the present invention;
FIG. 4 shows a block flow diagram of a fingerprint verification method in an embodiment of the invention;
FIG. 5 is a schematic diagram of a fingerprint recognition device according to an embodiment of the present invention;
figure 6 shows a schematic diagram of the structure of a fingerprint authentication device in an embodiment of the present invention;
fig. 7 shows a schematic configuration diagram of a printing apparatus in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The present invention is applicable to a printing apparatus having a scanning module, which may be a scanner using a contact image sensor (CIS scanner for short), and which implements fingerprint recognition and verification functions through the CIS scanner.
An embodiment of the present invention provides a fingerprint identification method, as shown in fig. 1, the method includes:
step S101: scanning a scanning area of the terminal equipment to generate a fingerprint image of a user; in practical application, the terminal device is a printing device with a CIS scanner, and a user inputs fingerprint information through a scanning area arranged on the CIS scanner to generate a fingerprint image of the user.
Step S102: analyzing the definition of the fingerprint image, and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value; in practical application, the definition of the fingerprint image (for example, an algorithm such as an EAV point sharpness algorithm function and a gray variance function) is calculated through an existing algorithm, whether the definition of the fingerprint image is greater than a preset threshold is judged, and a specific value of the preset threshold is determined according to the used algorithm, so that the generated fingerprint image can be used for subsequent fingerprint comparison.
Step S103: when the definition of the fingerprint image is greater than or equal to a preset threshold value, converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database; in practical application, when the definition of the fingerprint image is greater than or equal to the preset threshold, it indicates that the fingerprint image can be used for subsequent fingerprint comparison, and the fingerprint image is converted into a digital signal by an analog-to-digital converter or other devices with the same function and stored in a fingerprint database.
By implementing the fingerprint identification method in the embodiment of the invention, the fingerprint information input by the user is identified by utilizing the scanning area on the terminal equipment, and the fingerprint image is stored for subsequent fingerprint comparison, so that the fingerprint identification function is realized, and the problem that the cost of the printing equipment is increased due to the fact that the fingerprint identification device is independently installed on the printing equipment can be solved.
Optionally, in some embodiments of the present invention, after step S102 in the above embodiments, the fingerprint identification method further includes: step S104: when the definition of the fingerprint image is smaller than the preset threshold value, the user is prompted to re-input the information of the fingerprint image through the display screen of the terminal device, in practical application, when the definition of the fingerprint image is smaller than the preset threshold value, the condition that the fingerprint input by the user is unclear and cannot be used for subsequent fingerprint comparison is solved, and the user is prompted to re-input the fingerprint image through the scanning area of the printing device through the display screen on the printing device.
Optionally, in some embodiments of the present invention, step S101 in the above embodiments includes: an operation of scanning a finger of a user moving from a first position to a second position in a scanning area using the scanning area; generating a fingerprint image of a user according to operation scanning; in practical applications, as shown in fig. 2, the scanning area of the printing apparatus includes a first scanning area 1, an operation of moving a finger of a user from a first position to a second position in the first scanning area 1, for example, an operation of sliding the finger of the user from a lower portion to an upper portion of the first scanning area 1, is scanned using the first scanning area 1, a fingerprint image of the user is generated according to the operation scan, and fingerprint information of the user is read.
Optionally, in some embodiments of the present invention, step S101 in the above embodiments further includes: scanning the operation of stopping the finger of the user in the scanning area for a preset time by using the scanning area; and generating a fingerprint image of the user according to the operation scanning. In practical applications, as shown in fig. 3, the scanning area further includes a second scanning area 2, and an operation of scanning the second scanning area 2 for a preset time of the user's finger in the second scanning area is performed, and a fingerprint image of the user is generated according to the operation, where the preset time may be 2 to 3 seconds.
An embodiment of the present invention further provides a fingerprint verification method, as shown in fig. 4, the method includes the following steps:
step S201: scanning a scanning area of the terminal equipment to generate a second fingerprint image of the user; in practical applications, the second fingerprint image entered by the user is generated through a scanning area on the printing apparatus.
Step S202: judging whether the second fingerprint image is the same as a reference fingerprint image in a fingerprint database; the reference fingerprint image in the fingerprint database is generated by the fingerprint identification method in the above embodiment; in practical applications, the fingerprint image of the user obtained by the above embodiment is used as a reference fingerprint image in the fingerprint database, and is compared with the second fingerprint image of the user, and whether the second fingerprint image is the same as the reference fingerprint image is determined, so as to determine whether the user has the authority to use the printing apparatus.
Step S203, when the second fingerprint image is the same as the reference fingerprint image, starting the corresponding function of the terminal equipment; specifically, when the second fingerprint image of the user is the same as the reference fingerprint image, it is described that the user has the authority to use the printing apparatus, and the corresponding functions of the printing apparatus, for example, the printing function, the scanning function, and the like are turned on.
In other embodiments of the present invention, the fingerprint verification method further includes: step S204: when the second fingerprint image is different from the reference fingerprint image in the fingerprint database, closing the corresponding function of the terminal equipment; specifically, when the second fingerprint image is the same as the reference fingerprint image in the database, it indicates that the user does not have the authority to use the printing device, and accordingly, the corresponding function of the printing device is closed, and the printing device is not opened for the user.
By implementing the fingerprint verification method in the embodiment of the invention, the second fingerprint image of the user is generated by scanning the scanning area of the printing equipment and is compared with the reference fingerprint image in the fingerprint database to determine whether the user uses the authority of the printing equipment, so that the problem that the cost of the printing equipment is increased due to the fact that a fingerprint identification device is independently installed on the printing equipment can be solved.
An embodiment of the present invention further provides a fingerprint identification apparatus, as shown in fig. 5, the apparatus includes: a first generating module 101, configured to scan and generate a fingerprint image of a user using a scanning area of a terminal device, where the detailed process refers to the content of step S101 in the foregoing method embodiment; a first determining module 102, configured to analyze a sharpness of the fingerprint image, and determine whether the sharpness of the fingerprint image is greater than or equal to a preset threshold, where the detailed process refers to the content of step S102 in the foregoing method embodiment; the fingerprint conversion module 103 is configured to, when the definition of the fingerprint image is greater than or equal to a preset threshold, convert the fingerprint image into a digital signal and store the digital signal in the fingerprint database, where the detailed process refers to the content of step S103 in the above method embodiment.
By implementing the fingerprint identification device in the embodiment of the invention, the fingerprint information input by a user is identified by utilizing the scanning area on the terminal equipment, and the fingerprint image is stored for subsequent fingerprint comparison, so that the fingerprint identification function is realized, and the problem that the cost of the printing equipment is increased due to the fact that the fingerprint identification device is independently installed on the printing equipment can be solved.
An embodiment of the present invention further provides a fingerprint verification apparatus, as shown in fig. 6, the apparatus includes: a second generating module 201, configured to scan and generate a second fingerprint image of the user using a scanning area of the terminal device, where the detailed process refers to the content of step S201 in the foregoing method embodiment; a second judging module 202, configured to judge whether the second fingerprint image is the same as the reference fingerprint image in the fingerprint database; the reference fingerprint image in the fingerprint database is generated according to the fingerprint identification method in the above embodiment, and the detailed process is referred to the content of step S202 in the above method embodiment; a function control module 203, configured to, when the second fingerprint image is the same as the reference fingerprint image, start a corresponding function of the terminal device, and refer to the content of step S203 in the foregoing method embodiment for a detailed process.
By implementing the fingerprint verification device in the embodiment of the invention, the second fingerprint image of the user is generated by scanning the scanning area of the printing equipment and is compared with the reference fingerprint image in the fingerprint database to determine whether the user uses the authority of the printing equipment, so that the problem that the cost of the printing equipment is increased due to the fact that the fingerprint identification device is independently installed on the printing equipment can be solved.
An embodiment of the present invention further provides a printing apparatus, as shown in fig. 7, the printing apparatus may include a processor 51, a memory 52, and a scanning module 53, where the processor 51, the memory 52, and the scanning module 53 may be connected by a bus or in another manner, and fig. 7 takes the connection by the bus as an example.
The processor 51 may be a Central Processing Unit (CPU). The Processor 51 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 52, as a non-transitory computer readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules (e.g., the first generation module 101, the first judgment module 102, and the fingerprint conversion module 103 shown in fig. 5) corresponding to the fingerprint identification method and the fingerprint verification method in the embodiment of the present invention. The processor 51 executes various functional applications and data processing of the processor by running non-transitory software programs, instructions and modules stored in the memory 52, namely, implements the fingerprint identification method and the fingerprint verification method in the above method embodiments.
The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 51, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 52 may optionally include memory located remotely from the processor 51, and these remote memories may be connected to the processor 51 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 52 and, when executed by the processor 51, perform the fingerprint identification method and the fingerprint verification method as in the embodiments of fig. 1-4.
The specific details of the printing terminal can be understood by referring to the corresponding descriptions and effects in the embodiments shown in fig. 1 to fig. 4, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A fingerprint identification method, comprising:
scanning a scanning area of the terminal equipment to generate a fingerprint image of a user;
analyzing the definition of the fingerprint image, and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value;
and when the definition of the fingerprint image is greater than or equal to the preset threshold, converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database.
2. The fingerprint identification method according to claim 1, wherein when the definition of the fingerprint image is smaller than the preset threshold, the user is prompted to re-enter the fingerprint image through a display screen of the terminal device.
3. The fingerprint identification method of claim 1, wherein generating the fingerprint image of the user by scanning the scanning area of the terminal device comprises:
an operation of scanning the user's finger in the scanning area from a first position to a second position using the scanning area;
and generating a fingerprint image of the user according to the operation scanning.
4. The fingerprint recognition method of claim 1, wherein the fingerprint image of the user is generated by scanning a scanning area of the terminal device, further comprising:
an operation of scanning the finger of the user in the scanning area using the scanning area to stop for a preset time;
and generating a fingerprint image of the user according to the operation scanning.
5. A method of fingerprint authentication, comprising:
scanning a scanning area of the terminal equipment to generate a second fingerprint image of the user;
judging whether the second fingerprint image is the same as a reference fingerprint image in a fingerprint database, wherein the reference fingerprint image in the fingerprint database is generated according to the fingerprint identification method in any one of claims 1-4;
and when the second fingerprint image is the same as the reference fingerprint image, starting the corresponding function of the terminal equipment.
6. The fingerprint authentication method according to claim 5, wherein when the second fingerprint image is not identical to the reference fingerprint image in the fingerprint database, the corresponding function of the terminal device is turned off.
7. A fingerprint recognition device, comprising:
the first generation module is used for scanning and generating a fingerprint image of a user by using a scanning area of the terminal equipment;
the first judgment module is used for analyzing the definition of the fingerprint image and judging whether the definition of the fingerprint image is greater than or equal to a preset threshold value or not;
and the fingerprint conversion module is used for converting the fingerprint image into a digital signal and storing the digital signal in a fingerprint database when the definition of the fingerprint image is greater than or equal to the preset threshold.
8. A fingerprint authentication device, comprising:
the second generation module is used for generating a second fingerprint image of the user by scanning the scanning area of the terminal equipment;
a second judging module, configured to judge whether the second fingerprint image is the same as a reference fingerprint image in a fingerprint database, where the reference fingerprint image in the fingerprint database is generated according to the fingerprint identification method of any one of claims 1 to 4;
and the function control module is used for starting the corresponding function of the terminal equipment when the second fingerprint image is the same as the reference fingerprint image.
9. A printing apparatus, comprising:
a scanning module, a memory and a processor, the scanning module, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor performing the method of fingerprint identification according to any one of claims 1 to 4 by executing the computer instructions, or performing the method of fingerprint authentication according to claim 5 or 6.
10. A computer-readable storage medium storing computer instructions for causing a computer to perform the method of fingerprint identification according to any one of claims 1-4 or the method of fingerprint authentication according to claim 5 or 6.
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| CN201910779855.1A CN110674691A (en) | 2019-08-22 | 2019-08-22 | Fingerprint identification and verification method and device and printing equipment |
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