CN110717363B - Fingerprint acquisition method and device applied to fingerprint registration - Google Patents
Fingerprint acquisition method and device applied to fingerprint registration Download PDFInfo
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- CN110717363B CN110717363B CN201810768281.3A CN201810768281A CN110717363B CN 110717363 B CN110717363 B CN 110717363B CN 201810768281 A CN201810768281 A CN 201810768281A CN 110717363 B CN110717363 B CN 110717363B
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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
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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
- G06V40/1347—Preprocessing; Feature extraction
Abstract
The embodiment of the invention discloses a fingerprint acquisition method and a fingerprint acquisition device applied to fingerprint registration, wherein the method comprises the following steps: displaying first indication information in a fingerprint acquisition area of a touch screen; if the fact that the user touches a first area used for displaying the first indication information is detected, acquiring a first fingerprint image collected by a fingerprint sensor; displaying second indication information in the fingerprint acquisition area of the touch screen; if the fact that the user touches a second area used for displaying the second indication information is detected, a second fingerprint image collected by the fingerprint sensor is obtained; and splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image. By adopting the fingerprint collection method, the user can be intuitively and accurately guided to press and print, the user is better helped to finish the fingerprint registration process, the times of pressing and printing are further reduced, and the fingerprint registration efficiency is improved.
Description
Technical Field
The invention relates to the field of fingerprint acquisition applied to fingerprint registration, in particular to a fingerprint acquisition method and a fingerprint acquisition device applied to fingerprint registration.
Background
For terminal devices such as mobile phones with fingerprint sensors, the area of the fingerprint sensor used is usually small, so that the area of the fingerprint collected by a finger by a single impact is limited. When the fingerprint is registered, a user is often required to press down the printing for many times, and the user is expected to slightly move the finger in the process of pressing down the printing, so that the fingerprint sensor can capture a plurality of fingerprint images of different areas on the finger, and the effective fingerprint with a large enough area is acquired by using the plurality of fingerprint images for registration. Therefore, during fingerprint identification, even if the finger printing position deviates a little, the fingerprint collected by the fingerprint sensor can be identified, thereby reducing the influence of the finger printing position on the accuracy of fingerprint identification.
In the conventional fingerprint collection technology (for example, TouchID of apple company) applied to terminal equipment, when a fingerprint is registered, the distance between a fingerprint sensor and a registration guide interface on a touch screen is long, and accurate prompt is difficult to be provided for a user. For example, please refer to the terminal device shown in fig. 1, which has a front surface with a touch screen 11, a login guide interface 12 is displayed on the touch screen 11, and indication information "please place a finger on the HOME key" is displayed in the login guide interface 12 to guide the user to enter a fingerprint. After fingerprints of certain areas of the finger have been captured, other indication information is displayed in the enrollment guidance interface 12, such as "please move the finger to the left" to indicate to the user to slightly move the finger to the left and to capture fingerprints of other areas. The user presses and prints on the fingerprint sensor 13 on the back of the terminal device according to the characters in the registration guide interface 12. For another example, please refer to the terminal device shown in fig. 2, the front of the terminal device is a touch screen 21, a registration guidance interface 22 is displayed on the touch screen 21, and a fingerprint picture is displayed in the registration guidance interface 22 to guide the user to enter a fingerprint. When the fingerprint sensor 23 collects the fingerprint of a partial area on the finger, the partial area on the fingerprint picture in the registration guide interface 22 changes color, so as to instruct the user to slightly move the finger, and the finger area corresponding to the non-color-changed area is placed at the position of the fingerprint sensor 23 to press down.
Therefore, in the conventional fingerprint collection, the distance between the registration guidance interface and the fingerprint sensor is relatively long, and the instruction information for guiding the user to press the fingerprint provided by the registration guidance interface is not accurate enough, which is a problem to be solved by those skilled in the art.
In recent years, there has been a terminal device combining fingerprint detection with a screen on which an area can display a pattern and also detect a fingerprint. It is necessary to design a new fingerprint registration and fingerprint collection method based on the new terminal.
Disclosure of Invention
In order to solve the technical problem, the application provides a new fingerprint collection method applied to fingerprint registration so as to intuitively and accurately guide a user to press down and print, better help the user to finish the fingerprint registration process, further reduce the number of times of pressing down and improve the fingerprint registration efficiency.
In a first aspect, a fingerprint acquisition method applied to fingerprint registration is provided, which includes the following steps:
displaying first indication information in a fingerprint acquisition area of a touch screen;
if the fact that the user touches a first area used for displaying the first indication information is detected, acquiring a first fingerprint image collected by a fingerprint sensor;
displaying second indication information in the fingerprint acquisition area of the touch screen;
if the fact that the user touches a second area used for displaying the second indication information is detected, a second fingerprint image collected by the fingerprint sensor is obtained;
and splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the fingerprint acquisition method further includes:
displaying kth indication information in a fingerprint acquisition area of the touch screen;
if the fact that the user touches a kth area used for displaying kth indicating information is detected, acquiring a kth fingerprint image collected by a fingerprint sensor; the k-th area and any one of the first area to the N-th area except the k-th area are independent of each other or partially overlapped with each other, the area of the first fingerprint image to the N-th fingerprint image corresponding to at least one fingerprint image on the finger except the k-th fingerprint image is partially overlapped with the area of the k-th fingerprint image corresponding to the finger, and k is 1, 2, 3, 4, … …, N-1, N and N are the total number of the indicating information and are positive integers.
With reference to the first implementation manner of the first aspect, in a second possible implementation manner of the first aspect, a sensor corresponding area on the touch screen is an area where the touch screen and a collectable surface of the fingerprint sensor completely overlap, and the sensor corresponding area is located in the fingerprint collecting area.
With reference to the first aspect and the foregoing possible implementation manners, in a third possible implementation manner of the first aspect, after all N pieces of indication information of the first indication information to the nth indication information are displayed, the first fingerprint image acquired by the fingerprint sensor is acquired.
With reference to the first aspect and the foregoing possible implementation manners, in a fourth possible implementation manner of the first aspect, after an ith fingerprint image acquired by the fingerprint sensor is acquired, the (i + 1) th indication information is displayed; the corresponding area of the ith fingerprint image on the finger is partially overlapped with the corresponding area of the (i + 1) th fingerprint image on the finger, wherein i is any one of 1 to N-1.
With reference to the first aspect and the foregoing possible implementation manners, in a fifth possible implementation manner of the first aspect, after acquiring the ith fingerprint image acquired by the fingerprint sensor, the method further includes:
and changing the ith indication information displayed in the ith area into ith prompt information, wherein the ith prompt information is different from the ith indication information in color, brightness, contrast and/or content, and i is any one of 1 to N.
With reference to the first aspect and the foregoing possible implementation manners, in a sixth possible implementation manner of the first aspect, the ith indication information and the (i + 1) th indication information are sequentially displayed to form an animation, where i is any one of 1 to N-1.
With reference to the first aspect and the foregoing possible implementation manners, in a seventh possible implementation manner of the first aspect, N areas from the first area to the nth area are arranged in a cross shape, a circular shape, a rectangular shape, a triangular shape, or a nine-square grid shape.
With reference to the first aspect and the foregoing possible implementation manners, in an eighth possible implementation manner of the first aspect, the first indication information is the same as the ith indication information, where i is any one of 2 to N.
In a second aspect, a fingerprint acquisition apparatus for fingerprint registration is provided, including:
the display unit is used for displaying first indication information in the fingerprint acquisition area of the touch screen; displaying second indication information in the fingerprint acquisition area of the touch screen;
the processing unit is used for acquiring a first fingerprint image acquired by the fingerprint sensor under the condition that a user is detected to touch a first area for displaying the first indication information; under the condition that the user is detected to touch a second area for displaying the second indication information, acquiring a second fingerprint image acquired by a fingerprint sensor; and splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image.
The fingerprint acquisition method and the fingerprint acquisition device in the technical scheme are mainly applied to a fingerprint registration scene, and first indication information is displayed in a fingerprint acquisition area of a touch screen; under the condition that a user is detected to touch a first area for displaying the first indication information, acquiring a first fingerprint image acquired by a fingerprint sensor; displaying second indication information in the fingerprint acquisition area of the touch screen; and acquiring a second fingerprint image acquired by the fingerprint sensor under the condition that the user is detected to touch a second area for displaying the second indication information. The indication information is displayed in different areas so as to guide the user to press on the areas, and the fingerprint sensor is convenient to collect fingerprint images formed by fingerprints in different areas of the finger. And finally, splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image. Compared with the traditional fingerprint collection method, the position displayed by the indication information is in the fingerprint collection area, and the indication information can give visual and accurate indication to guide the user to press down the fingerprint, so that the user is better helped to finish the fingerprint collection process in limited times of pressing down the fingerprint, the times of pressing down the fingerprint by the user are reduced, and the fingerprint registration efficiency is improved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a diagram of a related apparatus in a conventional fingerprint acquisition method;
FIG. 2 is a schematic diagram of an apparatus related to another conventional fingerprint acquisition method;
FIG. 3 is a flowchart of one embodiment of the fingerprint acquisition method of the present application;
fig. 4 is a schematic diagram of an implementation manner of the fingerprint acquisition method applied to a terminal device;
FIG. 5 is a schematic diagram of a fingerprint collection method of the present application with a printing center at a position of indication information "0" when the fingerprint collection method is applied to a terminal device;
FIG. 6 is a schematic diagram of a fingerprint collection method of the present application with the center of impact at the position of the indication information "1" when applied to a terminal device;
fig. 7 is a schematic diagram of a second implementation manner of the fingerprint acquisition method applied to the terminal device;
fig. 8 is a schematic diagram of a third implementation manner of the fingerprint acquisition method applied to the terminal device;
FIG. 9 is a diagram illustrating a fourth implementation manner of the fingerprint acquisition method applied to a terminal device;
FIG. 10 is a diagram illustrating a fifth implementation manner of the fingerprint acquisition method applied to a terminal device;
fig. 11 is a schematic structural diagram of one embodiment of a fingerprint acquisition device according to the present application.
Description of the reference numerals:
FIG. 1: a touch screen 11; registering a guide interface 12; a fingerprint sensor 13;
FIG. 2: a touch screen 21; a registration guidance interface 22; a fingerprint sensor 23;
fig. 4 to 10: a touch screen 3; a fingerprint collection area 31; the first indication information 32; the second indication information 33; a sensor corresponding region 34; third indication information 35; a finger 4;
FIG. 11: a display unit 51; a processing unit 52.
Detailed Description
The following provides a detailed description of the embodiments of the present application.
Referring to fig. 3, in a first embodiment of the present application, a fingerprint acquisition method applied to fingerprint registration is provided, which includes the following steps:
s100: displaying first indication information in a fingerprint acquisition area of a touch screen;
s200: if the fact that the user touches a first area used for displaying the first indication information is detected, acquiring a first fingerprint image collected by a fingerprint sensor;
s300: displaying second indication information in the fingerprint acquisition area of the touch screen;
s400: if the fact that the user touches a second area used for displaying the second indication information is detected, a second fingerprint image collected by the fingerprint sensor is obtained;
s500: and splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image.
In fingerprint-on-Display (FOD) technology, a fingerprint sensor is installed below a touch screen or integrated with the touch screen, so that a user can collect a fingerprint by pressing the touch screen above the fingerprint sensor. The area on the touch screen that completely overlaps the detectable face of the fingerprint sensor may be referred to as the sensor corresponding area.
In step S100, the fingerprint capture area on the touch screen may be the sensor corresponding area described above, or may include the sensor corresponding area. For a terminal device that generally employs FOD technology, the fingerprint acquisition area is the aforementioned sensor corresponding area, and the user places at least a portion of a finger on the sensor corresponding area to apply a fingerprint so that the fingerprint sensor can acquire a fingerprint located in the sensor corresponding area. In the present application, the sensor corresponding region may also be within the fingerprint acquisition region. For example, referring to fig. 4, in fig. 4, a fingerprint sensor (not shown) is installed below the touch screen 3, an area where a detectable surface of the fingerprint sensor completely overlaps with the touch screen 3 is a sensor corresponding area 34, and the sensor corresponding area 34 is located in the fingerprint collecting area 31 on the touch screen 3. This is because a structure for reducing an image can be provided between the fingerprint sensor of the terminal device and the touch screen, so that even if a part of the finger is in contact with an area other than the sensor-corresponding area within the fingerprint collection area when the user presses the print, the fingerprint of the part of the finger can be collected by the fingerprint sensor. For example, for a fingerprint sensor made using optically produced materials and processes, a convex lens may be placed between the fingerprint sensor and the touch screen to reduce the image formed through a small hole beneath the touch screen.
Displaying first indication information in the fingerprint acquisition area, wherein the first indication information can be indication characters, such as numbers such as '1' and '2' shown in fig. 4, or characters such as 'click me' shown in fig. 10; the first indication information may also be an indication icon such as the indication icon shown in fig. 7.
In step S200, the first area is an area within the fingerprint collection area, and the first indication information is displayed in the first area. For example, in the example shown in fig. 4, the first region may be a region within a circle outside the number "0", or may be a larger region including the circle. The specific shape and size of the area for displaying the indication information are not limited in the present application. The user sees the first instruction information displayed in the first area and presses the finger against the display position of the first instruction information. At this time, the terminal device detects that the user touches the area, and then acquires a first fingerprint image acquired by the fingerprint sensor.
In the step S300, the second indication information may be an indication character or an indication icon, similar to the first indication information.
In the step S400, the second area is also an area within the fingerprint collection area, and the second indication information is displayed in the second area. The user sees the first instruction information displayed in the second area and presses the second instruction information with the finger at the display position of the second instruction information. And when the terminal equipment detects that the user touches the area, acquiring a second fingerprint image acquired by the fingerprint sensor.
Here, the areas of the first fingerprint image corresponding to the finger and the areas of the second fingerprint image corresponding to the finger may be independent of each other, i.e. not overlapping at all, or may overlap partially.
In the step of S500, a complete fingerprint image is obtained according to the first fingerprint image and the second fingerprint image.
If the area of the first fingerprint image corresponding to the finger partially coincides with the area of the second fingerprint image corresponding to the finger, the first fingerprint image and the second fingerprint image can be stitched together to obtain a complete fingerprint image of the finger. Under the condition that the requirement of fingerprint registration is met by only utilizing the first fingerprint image and the second fingerprint image, the complete fingerprint image can be obtained by only utilizing the first fingerprint image and the second fingerprint image for splicing. If the first fingerprint image and the second fingerprint image are not enough to be spliced to obtain the complete fingerprint image, other fingerprint images can be obtained, and the first fingerprint image, the second fingerprint image and the other fingerprint images are jointly spliced to obtain the complete fingerprint image.
If the corresponding area of the first fingerprint image on the finger is not completely overlapped with the corresponding area of the second fingerprint image on the finger, under the condition, the first fingerprint image and the second fingerprint image can not be spliced. At the moment, other indication information needs to be displayed in the fingerprint acquisition area so as to guide the user to perform stamping again, so that more fingerprint images are acquired. And then the fingerprint images are jointly spliced to obtain a complete fingerprint image of one finger.
Specifically, the fingerprint acquisition method may further include the following steps:
s600: displaying kth indication information in a fingerprint acquisition area of the touch screen;
s700: and if the fact that the user touches a k-th area for displaying the k-th indication information is detected, acquiring a k-th fingerprint image acquired by the fingerprint sensor.
Here, k is 1, 2, 3, 4, … …, N-1, N is the total number of the instruction information and is a positive integer.
When N takes 2, k takes 1 and 2, respectively, and this corresponds to the steps of S100 to S400 described above. This means that only the first fingerprint image and the second fingerprint image are acquired, and at this time, the corresponding area of the first fingerprint image on the finger and the corresponding area of the second fingerprint image on the finger must be partially overlapped, otherwise, the first fingerprint image and the second fingerprint image cannot be spliced. The first and second regions are independent of each other or partially coincide, but do not completely coincide.
When N is a positive integer larger than 2, the kth area and any one of the first area to the nth area except the kth area are independent of each other or partially overlapped, and the area of the first fingerprint image to the nth fingerprint image except the kth fingerprint image corresponding to the finger is partially overlapped with the area of the kth fingerprint image corresponding to the finger.
In the present application, the two regions are independent of each other, that is, the two regions do not overlap completely, that the two regions overlap partially means that a part of the sub-region in one region overlaps with a part of the sub-region in the other region, and that the two regions overlap completely means that the positions of the two regions are identical.
For example, if N is 4, the fingerprint acquisition method includes:
s601: displaying third indication information in the fingerprint acquisition area of the touch screen;
s701: and if the fact that the user touches a third area for displaying third indication information is detected, acquiring a third fingerprint image acquired by the fingerprint sensor.
S602: displaying fourth indication information in the fingerprint acquisition area of the touch screen;
s702: and if the fact that the user touches a fourth area for displaying the fourth indication information is detected, acquiring a fourth fingerprint image acquired by the fingerprint sensor.
Here, the first region and any one of the second region to the fourth region are independent of each other or partially coincide with each other; the second region and any one of the first region, the third region and the fourth region are independent of each other or partially coincide with each other; the third region and any one of the first region, the second region and the fourth region are independent of each other or partially coincide with each other; the fourth region and any one of the first to third regions are independent of each other or partially overlap.
The corresponding area of at least one fingerprint image in the second fingerprint image to the fourth fingerprint image on the finger is partially overlapped with the corresponding area of the first fingerprint image on the finger; the corresponding area of at least one fingerprint image in the first fingerprint image, the third fingerprint image and the fourth fingerprint image on the finger is partially overlapped with the corresponding area of the second fingerprint image on the finger; the corresponding area of at least one fingerprint image in the first fingerprint image, the second fingerprint image and the fourth fingerprint image on the finger is partially overlapped with the corresponding area of the third fingerprint image on the finger; the corresponding area of at least one fingerprint image in the first fingerprint image to the third fingerprint image on the finger is partially overlapped with the corresponding area of the fourth fingerprint image on the finger.
In addition, when it is detected that the user touches a certain area displaying the indication information, the image acquired by the fingerprint sensor may not completely overlap with the corresponding area of any one of the previous or subsequent images on the finger, that is, the fingerprint image cannot be used for stitching with other fingerprint images, such a fingerprint image is actually useless for fingerprint registration, and in such a case, the fingerprint image is not recorded as one of the first fingerprint image to the nth fingerprint image. For example, in the foregoing example, the method may further include "displaying the second indication information in the fingerprint collection area of the touch screen; and if the user is detected to touch the second area for displaying the second indication information, acquiring an x-th fingerprint image by the fingerprint sensor, wherein the x-th fingerprint image is not overlapped with any one of the acquired first fingerprint image to the acquired fourth fingerprint image, and therefore, the x-th fingerprint image is not required to be utilized for splicing. Inserting steps like this in the middle of the steps of this application will not affect the execution of the fingerprint acquisition method in this application, and thus, such a solution still falls within the scope of this application.
In the step S500, a specific method for stitching two or more fingerprint images may adopt an existing stitching method, and details are not described here.
The fingerprint acquisition method in the technical scheme is mainly applied to a fingerprint registration scene, and first indication information is displayed in a fingerprint acquisition area of a touch screen; under the condition that a user is detected to touch a first area for displaying the first indication information, acquiring a first fingerprint image acquired by a fingerprint sensor; displaying second indication information in the fingerprint acquisition area of the touch screen; and acquiring a second fingerprint image acquired by the fingerprint sensor under the condition that the user is detected to touch a second area for displaying the second indication information. The indication information is displayed in different areas so as to guide the user to press on the areas, and the fingerprint sensor is convenient to collect fingerprint images formed by fingerprints in different areas of the finger. And finally, splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image. Compared with the traditional fingerprint collection method, the position displayed by the indication information is in the fingerprint collection area, and the indication information can give visual and accurate indication to guide the user to press down the fingerprint, so that the user is better helped to finish the fingerprint collection process in limited times of pressing down the fingerprint, the times of pressing down the fingerprint by the user are reduced, and the fingerprint registration efficiency is improved. That is to say, by adopting the fingerprint acquisition method in the technical scheme, after the user presses down the fingerprint for a limited number of times, the terminal equipment can acquire enough fingerprint images and splice the fingerprint images into a complete fingerprint image for fingerprint registration.
It should be noted that, in the present application, the step numbers are only used for convenience of distinguishing different steps and for convenience of reference, and do not imply the limitation of the sequence relation between the steps. For example, step S100 is to display the first indication information in the fingerprint collection area of the touch screen, step S300 is to display the second indication information in the fingerprint collection area of the touch screen, and step S100 may be performed before step S300, or may be performed simultaneously with step S300.
Optionally, in the foregoing technical solution, after all N pieces of indication information from the first indication information to the nth indication information are displayed, the first fingerprint image acquired by the fingerprint sensor is acquired.
Taking the display situation of fig. 4 as an example, the first indication information 32 to the tenth indication information may be displayed simultaneously in the fingerprint acquisition area 31 of the touch screen 3, and the user touches the areas displaying these indication information with one finger respectively, so that the fingerprint sensor acquires fingerprint images of different areas of the finger. And acquiring the fingerprint images, and splicing according to the fingerprint images to obtain a complete fingerprint image.
Optionally, after acquiring the ith fingerprint image acquired by the fingerprint sensor, the (i + 1) th indication information is displayed. Further, the corresponding area of the ith fingerprint image on the finger is partially overlapped with the corresponding area of the (i + 1) th fingerprint image on the finger, wherein i is any one of 1 to N-1.
Taking the display cases of fig. 5 and 6 as an example, "0" in fig. 4 is regarded as the first indication information 32, and "1" in fig. 5 is regarded as the second indication information 33. First, displaying first indication information 32 in a fingerprint acquisition area 31, and if a user touches a first area, acquiring a first fingerprint image; then, the second indication information 32 is displayed in the fingerprint collection area 31, and if the user touches the second area, a second fingerprint image is acquired. By such a method, the user can be guided to touch the area where the indication information is displayed with the finger 4 in a preset specific order. For example, through a specific display sequence, corresponding areas of two successively acquired fingerprint images on a finger are partially overlapped, so that a processing unit in the terminal device can splice the fingerprint images more quickly, and the fingerprint registration efficiency is further improved.
Optionally, the ith indication information and the (i + 1) th indication information are sequentially displayed to form an animation, wherein i takes any one of 1 to N-1. The indication information sequentially displays visual effects forming animation, and the trajectory may be a straight line, a broken line, a curve, or the like, or may also be a circle, an arc, a rectangle, or the like, which is not limited in this application. The track of the animation passes through or covers all the positions where the user is expected to press down, the user is prompted to slide on the touch screen by a dynamic display mode, and the formed motion track is displayed in sequence by tracking the indication information. When a finger of a user slides and touches a display area of indication information, a fingerprint image which is acquired by a fingerprint sensor and corresponds to the display area is acquired.
Taking the case of fig. 7 as an example, the first indication information 32, the second indication information 33, the third indication information 35, and up to the nth indication information are indication icons, which are sequentially displayed to form an animation, and guide the user to touch and slide the finger according to the track formed by the indication information display, so that the fingerprint sensor can capture fingerprint images of different areas of the finger.
Optionally, the first indication information and the ith indication information may be different or the same, where i is any one of 2 to N. For example, in fig. 4, 7, 8, and 9, the indication information is a number, but the specific contents of a plurality of indication information are different. For another example, in fig. 7, the indication information is an indication icon, and the specific contents of the plurality of indication information are the same. For example, in fig. 10, the instruction information is all text, and the specific contents of the plurality of instruction information are the same. In addition, in the plurality of pieces of instruction information, the contents of some pieces of instruction information may be the same, and the contents of the other pieces of instruction information may be different.
Optionally, after acquiring the ith fingerprint image acquired by the fingerprint sensor, the method further includes:
s800: and changing the ith indication information displayed in the ith area into ith prompt information, wherein the ith prompt information is different from the ith indication information in color, brightness, contrast and/or content, and i is any one of 1 to N.
The ith prompt message and the ith indication message are different in at least one aspect of color, brightness, contrast and content, so that a user can intuitively know which indication messages are in areas which have been touched and which indication messages have not been touched, and the user is guided to continuously press down at positions which are not finished to press down according to the indication messages.
Optionally, the N regions of the first region to the nth region are arranged in a cross shape, a circular shape, a rectangular shape, a triangular shape or a squared figure.
For example, fig. 4 shows an example in which the first to ninth areas displayed by the 9 pieces of indication information are arranged in the shape of a squared figure. Fig. 8 shows an example in which the first to fifth areas displayed by the 5 pieces of indication information are arranged in a cross shape. Fig. 9 shows an example in which the first to sixth areas displayed by the 6 pieces of indication information are arranged in a circular shape. Fig. 10 shows an example in which the first to sixth areas displayed by the 6 pieces of indication information are arranged in a triangular shape.
It should be noted that two or more of the above-mentioned alternatives may be combined with each other as long as they are not logically contradictory.
In a second embodiment of the present application, please refer to fig. 11, which provides a fingerprint acquisition apparatus for fingerprint registration, comprising:
the display unit 51 is used for displaying first indication information in the fingerprint acquisition area of the touch screen; displaying second indication information in the fingerprint acquisition area of the touch screen;
the processing unit 52 is configured to acquire a first fingerprint image acquired by the fingerprint sensor when it is detected that the user touches a first area for displaying the first indication information; under the condition that the user is detected to touch a second area for displaying the second indication information, acquiring a second fingerprint image acquired by a fingerprint sensor; and splicing the first fingerprint image and the second fingerprint image to obtain a complete fingerprint image.
Optionally, the display unit 51 is configured to display the kth indication information in the fingerprint collection area of the touch screen;
the processing unit 52 is configured to acquire a kth fingerprint image acquired by the fingerprint sensor when it is detected that the user touches a kth area for displaying the kth indication information;
the kth area and any one of the first area to the nth area except the kth area are independent of each other or partially overlapped with each other, the area of the first fingerprint image to the nth fingerprint image corresponding to at least one of the fingerprint images on the finger except the kth fingerprint image is partially overlapped with the area of the kth fingerprint image corresponding to the finger, and k is 1, 2, 3, 4, … …, N-1, N is the total number of the indicating information and is a positive integer.
Optionally, the sensor corresponding area on the touch screen is an area where the touch screen and the detectable surface of the fingerprint sensor completely overlap, and the sensor corresponding area is located in the fingerprint acquisition area.
Optionally, after the display unit 51 displays N pieces of indication information, namely the first indication information to the nth indication information, the processing unit 52 acquires the first fingerprint image collected by the fingerprint sensor.
Optionally, after the processing unit 52 acquires the ith fingerprint image acquired by the fingerprint sensor, the display unit 51 displays the (i + 1) th indication information; the corresponding area of the ith fingerprint image on the finger is partially overlapped with the corresponding area of the (i + 1) th fingerprint image on the finger, wherein i is any one of 1 to N-1.
Optionally, after the processing unit 52 acquires the ith fingerprint image acquired by the fingerprint sensor, the display unit 51 is further configured to change the ith indication information displayed in the ith area into the ith prompt information; wherein, the ith prompt message is different from the ith indication message in color, brightness, contrast and/or content, and i is any one of 1 to N.
Optionally, the display unit 51 is further configured to sequentially display the ith indication information and the (i + 1) th indication information to form an animation, where i is any one of 1 to N-1.
Optionally, the N regions of the first region to the nth region are arranged in a cross shape, a circular shape, a rectangular shape, a triangular shape or a squared figure.
Optionally, the first indication information displayed by the display unit 51 is the same as the ith indication information, where i is any one of 2 to N.
The fingerprint acquisition device in this embodiment corresponds to the fingerprint acquisition method in the first embodiment, so that the beneficial effects of the fingerprint acquisition method are correspondingly achieved, and the description is omitted here.
The same and similar parts in the various embodiments in this specification may be referred to each other. The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.
Claims (9)
1. A fingerprint acquisition method applied to fingerprint registration is characterized by comprising the following steps:
displaying first indication information in a fingerprint acquisition area of a touch screen;
if the fact that the user touches a first area used for displaying the first indication information is detected, acquiring a first fingerprint image collected by a fingerprint sensor;
displaying second indication information in the fingerprint acquisition area of the touch screen;
if the fact that the user touches a second area used for displaying the second indication information is detected, a second fingerprint image collected by the fingerprint sensor is obtained;
displaying kth indication information in a fingerprint acquisition area of the touch screen;
if the fact that the user touches a kth area used for displaying kth indicating information is detected, acquiring a kth fingerprint image collected by a fingerprint sensor; the kth area and any one of the first area to the nth area except the kth area are independent of each other or partially coincide with each other, the area of the first fingerprint image to the nth fingerprint image corresponding to at least one of the fingerprint images on the finger except the kth fingerprint image partially coincides with the area of the kth fingerprint image corresponding to the finger, k is 3, 4, … …, N-1, N is the total number of the indicating information and is a positive integer;
and splicing the first fingerprint image, the second fingerprint image and the k fingerprint image to obtain a complete fingerprint image.
2. The fingerprint acquisition method according to claim 1, wherein the sensor corresponding area on the touch screen is an area where the touch screen completely overlaps with the fingerprint sensor, and the sensor corresponding area is within the fingerprint acquisition area.
3. The fingerprint acquisition method according to claim 1, wherein the first fingerprint image acquired by the fingerprint sensor is acquired after all of the N indication information of the first indication information to the nth indication information is displayed.
4. The fingerprint acquisition method according to claim 1, wherein after acquiring the ith fingerprint image acquired by the fingerprint sensor, displaying the (i + 1) th indication information; the corresponding area of the ith fingerprint image on the finger is partially overlapped with the corresponding area of the (i + 1) th fingerprint image on the finger, wherein i is any one of 1 to N-1.
5. The fingerprint acquisition method according to claim 1, further comprising, after acquiring the ith fingerprint image acquired by the fingerprint sensor:
changing the ith indication information displayed in the ith area into ith indication information, wherein the ith indication information is different from the ith indication information in color, brightness, contrast and/or content, the ith fingerprint image is any one of the acquired 1 st to k fingerprint images, the ith indication information is indication information used for acquiring the display corresponding to the ith fingerprint image, the ith area is an area for displaying the ith indication information, and i is a positive integer.
6. The fingerprint acquisition method according to claim 1, wherein the ith indication information and the (i + 1) th indication information are sequentially displayed to form an animation, wherein i takes any one of 1 to N-1.
7. The fingerprint acquisition method according to claim 1, wherein the N regions from the first region to the nth region are arranged in a cross shape, a circular shape, a rectangular shape, a triangular shape or a squared figure.
8. The fingerprint acquisition method according to claim 1, wherein the first indication information is the same as the ith indication information, wherein the ith indication information is indication information used for acquiring and displaying an ith fingerprint image which is any one of the acquired 2 nd to k th fingerprint images.
9. A fingerprint collection device applied to fingerprint registration is characterized by comprising:
the display unit is used for displaying first indication information in the fingerprint acquisition area of the touch screen and displaying second indication information in the fingerprint acquisition area of the touch screen; displaying the kth indication information in the fingerprint acquisition area of the touch screen;
the processing unit is used for acquiring a first fingerprint image acquired by the fingerprint sensor under the condition that a user is detected to touch a first area for displaying the first indication information; under the condition that the user is detected to touch a second area for displaying the second indication information, acquiring a second fingerprint image acquired by a fingerprint sensor; under the condition that a user is detected to touch a kth area for displaying kth indication information, acquiring a kth fingerprint image acquired by a fingerprint sensor; splicing the first fingerprint image, the second fingerprint image and the k fingerprint image to obtain a complete fingerprint image; the kth area and any one of the first area to the nth area except the kth area are independent of each other or partially overlapped with each other, the area of the first fingerprint image to the nth fingerprint image corresponding to at least one of the fingerprint images on the finger except the kth fingerprint image is partially overlapped with the area of the kth fingerprint image corresponding to the finger, k is 3, 4, … …, N-1, N is the total number of the indicating information and is a positive integer.
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| WO2020199159A1 (en) * | 2019-04-03 | 2020-10-08 | 深圳市汇顶科技股份有限公司 | Method and electronic device for guiding users to register fingerprints |
| CN112686172B (en) * | 2020-12-31 | 2023-06-13 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Airport runway foreign matter detection method, device and storage medium |
| CN113660370B (en) * | 2021-07-08 | 2023-10-24 | 荣耀终端有限公司 | Fingerprint input method and electronic equipment |
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