CN112580556A - Optical fingerprint acquisition method and device, electronic equipment and storage medium - Google Patents
Optical fingerprint acquisition method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN112580556A CN112580556A CN202011560341.6A CN202011560341A CN112580556A CN 112580556 A CN112580556 A CN 112580556A CN 202011560341 A CN202011560341 A CN 202011560341A CN 112580556 A CN112580556 A CN 112580556A
- Authority
- CN
- China
- Prior art keywords
- image
- sub
- acquisition
- fingerprint
- images
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000009499 grossing Methods 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 11
- 238000003706 image smoothing Methods 0.000 claims description 6
- 230000010365 information processing Effects 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 15
- 206010047571 Visual impairment Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Image Input (AREA)
Abstract
An optical fingerprint acquisition method, comprising the steps of: dividing a fingerprint image acquisition area into a plurality of acquisition sub-areas; collecting a sub-image of the pressed collection sub-area; carrying out gray level processing on each sub-image to obtain a new sub-image; and splicing all the new sub-images to obtain a complete fingerprint image. The invention also provides an optical fingerprint acquisition device, which can acquire optical fingerprint images under a large-area screen, effectively overcomes image blocking caused by image ghosting, eliminates the accumulation of the image ghosting, and effectively improves the quality of the acquired fingerprint images.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to an optical fingerprint acquisition method and apparatus, an electronic device, and a storage medium.
Background
According to the principle of optical fingerprint identification under the screen, after a finger presses an OLED screen, the finger is reflected to a fingerprint identification sensor under the screen through light, and information comparison is performed after a fingerprint image is generated, so that the purpose of fingerprint identification is achieved. Optical formula fingerprint module can effectively utilize screen illumination to generate fingerprint image under the screen at the picture process of gathering, does not need extra signal source, and the integration of being convenient for uses very extensively in intelligent terminal at present.
In the prior art, a large-area under-screen (e.g. 7 inch and above) optical fingerprint technology is used to capture fingerprints in an effective area M x N (even full screen) on a screen, where M is the number of vertical pixels of the effective area, and N is the number of horizontal pixels of the effective area, generally 80-1000, as shown in fig. 13. One way of optical fingerprint acquisition under the screen is to acquire a rectangular image with m × n size directly under the finger, where m is the number of pixels in the longitudinal direction of the rectangular image and n is the number of pixels in the transverse direction of the rectangular image, typically 80-300, as shown in fig. 14. However, the conventional optical fingerprint acquisition method under the screen has the technical problem that after the finger is replaced by another finger for acquisition, the afterimage of the previous fingerprint image appears, as shown in fig. 15. After multiple times of image acquisition, multiple residual shadows are accumulated to form blocks, which seriously affect the image quality, as shown in fig. 16.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide an optical fingerprint acquisition method, an optical fingerprint acquisition device, an electronic device and a storage medium, wherein an image acquisition area is divided into a plurality of small acquisition sub-areas for acquiring sub-images, and then the sub-images are spliced and smoothed, so that the problem of image blocking caused by the existence of residual images in the fingerprint image is effectively solved.
In order to achieve the above object, the present invention provides an optical fingerprint acquisition method, comprising the steps of:
dividing a fingerprint image acquisition area into a plurality of acquisition sub-areas;
collecting a sub-image of the pressed collection sub-area;
carrying out gray level processing on each sub-image to obtain a new sub-image;
and splicing all the new sub-images to obtain a complete fingerprint image.
Further, the step of dividing the fingerprint image collection area into a plurality of collection sub-areas is to divide the fingerprint image collection area into a plurality of fixed non-overlapping collection sub-areas.
Further, the step of performing gray scale processing on each sub-image to obtain a new sub-image further comprises,
obtaining the gray level average value of the sub-image according to the gray level value of the sub-image;
and subtracting the gray average value of the sub-image from the gray value of the sub-image to obtain a gray difference value to form a new sub-image.
Furthermore, the step of splicing all the new sub-images to obtain a complete fingerprint image further comprises the step of splicing all the new sub-images according to the original position relationship to obtain the complete fingerprint image.
Further, the method also comprises the step of smoothing the complete fingerprint image.
Further, the step of smoothing the complete fingerprint image is to remove seams between sub-images in the complete fingerprint image by using a smoothing algorithm.
Further, the step of smoothing the complete fingerprint image further includes removing the joints between the sub-images in the complete fingerprint image by using a smoothing algorithm and replacing the pixel values of the joints with the average values of the pixels on both sides of the joints between the sub-images to obtain a final fingerprint image.
In order to achieve the above objects, the present invention also provides an optical fingerprint acquisition device, including,
a region dividing module, an image acquisition module, an image gray level processing module, an image splicing module and an image smoothing processing module,
the region dividing module is used for dividing the image acquisition region into a plurality of acquisition sub-regions;
the image acquisition module acquires sub-images of the pressed acquisition sub-regions;
the image gray processing module is used for carrying out gray processing on the sub-image to obtain a new sub-image;
the image splicing module splices the new sub-images to obtain a complete fingerprint image;
and the image smoothing module is used for smoothing the complete fingerprint image to obtain a final fingerprint image.
In order to achieve the above object, the present invention further provides a fingerprint acquisition chip, including an optical fingerprint acquisition device and a control unit, wherein the optical fingerprint acquisition device adopts the above optical fingerprint acquisition device; the control unit controls the image acquisition and processing of the optical fingerprint acquisition device.
In order to achieve the above object, the present invention further provides a touch display, which includes a fingerprint acquisition chip and a touch screen, wherein the fingerprint acquisition chip adopts the above fingerprint acquisition chip, and the touch screen is used for acquiring an off-screen fingerprint image.
In order to achieve the above object, the present invention further provides an information processing apparatus, including a touch display and a central processing unit, wherein the touch display is the above touch display; and the central processing unit and the touch display perform information interaction.
To achieve the above object, the present invention further provides an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to perform the steps of the above optical fingerprint acquisition method.
To achieve the above object, the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of the above optical fingerprint acquisition method.
Compared with the prior art, the optical fingerprint acquisition method, the optical fingerprint acquisition device, the electronic equipment and the storage medium have the following technical effects:
the optical fingerprint image can be acquired under a large-area screen;
the accumulation of the residual shadows of the fingerprint images is eliminated, and the problem of image blocking caused by the residual shadows of the fingerprint images can be effectively solved;
the collection of the fingerprint images is converted into the collection of a plurality of fixed-point images, so that the quality of the collected fingerprint images can be effectively improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of an optical fingerprint acquisition method according to the present invention;
FIG. 2 is a schematic diagram of image acquisition area division according to the present invention;
FIG. 3 is a schematic diagram of a finger touch screen trigger acquisition sub-region according to the present invention;
FIG. 4 is a schematic diagram of an embodiment of acquiring sub-images in accordance with the present invention;
FIG. 5 is a schematic view of yet another embodiment of acquiring sub-images in accordance with the present invention;
FIG. 6 is a schematic diagram of the gray scale of a sub-image obtained according to the present invention;
FIG. 7 is a schematic view of a stitched complete fingerprint image according to the present invention;
FIG. 8 is a schematic diagram illustrating the effect of smoothing an unsealed complete fingerprint image according to the present invention;
FIG. 9 is a schematic structural diagram of an optical fingerprint acquisition device according to the present invention;
FIG. 10 is a diagram illustrating a fingerprint acquisition chip according to the present invention;
FIG. 11 is a schematic view of a touch display structure according to the present invention;
FIG. 12 is a schematic diagram of an information processing apparatus according to the present invention;
FIG. 13 is a schematic diagram of a fingerprint image collection area in the prior art;
FIG. 14 is a diagram illustrating the effect of a fingerprint image collected by the prior art;
FIG. 15 is a diagram illustrating a fingerprint image with an afterimage left in the prior art;
fig. 16 is a schematic diagram of a fingerprint image after multiple afterimages are accumulated in the prior art.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
Fig. 1 is a flow chart of an optical fingerprint acquisition method according to the present invention, which will be described in detail with reference to fig. 1.
First, in step 101, an image acquisition region is divided into a plurality of image acquisition sub-regions.
In the embodiment of the present invention, the image acquisition region is divided into a plurality of fixed non-overlapping acquisition sub-regions, as shown in fig. 2, the size of the image acquisition region is M × N, where M is the number of longitudinal pixels of the acquisition region, N is the number of transverse pixels of the acquisition region, and generally takes an integer of 80-1000; each acquisition sub-region has a size s t, where s is the number of longitudinal pixels of the acquisition sub-region and t is the number of transverse pixels of the acquisition sub-region, typically an integer from 20 to 100. For computational convenience, M can generally be divided equally by s and N can generally be divided equally by t. In fig. 2, M is 4s and N is 6 t.
At step 102, a pressed acquisition sub-region sub-image is acquired.
In the embodiment of the invention, the finger touches the screen to trigger the acquisition of the image, and when the pressing area of the finger is partially overlapped with a certain acquisition subarea, the acquisition subarea is pressed. As the area of the acquisition sub-region is small, the finger pressing region can be pressed to a plurality of acquisition sub-regions, as shown in fig. 3, a curve in the image represents the outline of the finger pressing region, and the pressing region of the finger is in the curve; the 9 gray small rectangles in the figure are the acquisition sub-regions of said compressions and the white small rectangles in the figure are the acquisition sub-regions of no compressions.
In the embodiment of the invention, the sub-images of the pressed acquisition sub-areas are acquired, and the sub-images of all the pressed acquisition sub-areas are acquired.
In the embodiment of the present invention, the order of acquiring the sub-images is not limited, and may be from left to right, from top to bottom, or from the center to the periphery, as shown in fig. 4 and 5.
In step 103, the sub-image is subjected to a gray scale process to generate a new sub-image.
In the embodiment of the present invention, due to the existence of the afterimage, the average gray scale of each sub-image may be different, and as shown in fig. 6, the gray scale of each sub-image needs to be processed.
In an embodiment of the present invention, first, the gray-scale value G of each sub-image is determinedi(x, y), where i 1, 2., 9 denotes an acquisition sub-area pressed by 9 fingers, x 1, 2.. t denotes an x-th column, and y 1.. s denotes a y-th row, and a gray-scale average M of the sub-image is calculatedi＝(ΣxΣyGi(x, y))/(st); then carrying out gray level processing on each sub-image, wherein the processed gray level value is G'i(x,y)＝Gi(x,y)-MiFrom the processed gray value G'i(x, y) constitute a new sub-image.
In step 104, all new sub-images are stitched into a complete fingerprint image.
In the embodiment of the invention, during splicing, all the obtained new sub-images are spliced according to the original position relationship to obtain a complete fingerprint image, as shown in fig. 7.
In step 105, the complete fingerprint image is smoothed to obtain a final fingerprint image.
In the embodiment of the invention, because the complete fingerprint image is formed by splicing the sub-images, seams exist in the image and need to be processed.
In the embodiment of the invention, a smoothing algorithm is used, the average value of the pixels at two sides of the joint is used for replacing the pixel value at the joint, the joint in the complete fingerprint image is smoothed, and the final fingerprint image is obtained, as shown in fig. 8.
Example 2
Fig. 9 is a schematic structural diagram of an optical fingerprint acquisition device according to the present invention, and as shown in fig. 9, the optical fingerprint acquisition device 20 of the present invention includes an area division module 201, an image acquisition module 202, an image gray scale processing module 203, an image stitching processing module 204, and an image smoothing processing module 205, wherein,
a region dividing module 201 that divides the image acquisition region into a plurality of fixed non-overlapping acquisition sub-regions.
An image acquisition module 202 that performs sub-image acquisition on the finger-pressed acquisition sub-area.
And the image gray processing module 203 performs gray processing on each sub-image acquired by the image acquisition module 202 to generate a new sub-image.
And the image splicing processing module 204 is used for splicing the new sub-images to obtain a complete fingerprint image.
And the image smoothing processing module 205 performs smoothing processing on the complete fingerprint image to obtain a final fingerprint image.
Example 3
An embodiment of the present invention further provides a fingerprint acquisition chip, fig. 10 is a schematic structural diagram of an optical fingerprint acquisition chip according to the present invention, and as shown in fig. 10, a fingerprint acquisition chip 40 of the present invention includes an optical fingerprint acquisition device 41 and a control unit 42, wherein,
the optical fingerprint acquisition device 41 is the optical fingerprint acquisition device 20 of the above-described embodiment.
And a control unit 42 for controlling the image acquisition and processing of the optical fingerprint acquisition device 41.
Example 4
Fig. 11 is a schematic structural view of a touch display according to the present invention, and as shown in fig. 11, a touch display 50 of the present invention includes a fingerprint acquisition chip 51 and a touch screen 52, wherein,
the fingerprint collection chip 51, which uses the fingerprint collection chip 40 in the above-mentioned embodiment, collects an off-screen fingerprint image through the touch screen 52.
In the embodiment of the present invention, the touch screen 52 is a liquid crystal display, an OLED display, a QLED display, a Mini LED display, or a Micro LED display.
Example 5
The embodiment of the invention also provides an information processing device. Fig. 12 is a schematic structural diagram of an information processing apparatus according to the present invention, and as shown in fig. 12, an information processing apparatus 60 of the present invention includes a touch display 61 and a central processing unit 62, wherein,
a touch display 61, which adopts the touch display 50 in the above embodiments.
The central processor 62 and the touch display 61 perform information interaction.
Example 7
Embodiments of the present invention also provide an electronic device comprising a processor, and a memory, wherein,
the memory stores a computer program which, when read and executed by the processor, performs the steps of the above-described embodiments of the optical fingerprint acquisition method.
Example 8
Embodiments of the present invention further provide a computer-readable storage medium having a computer program stored therein, where the computer program is configured to perform the steps in the above-mentioned optical fingerprint acquisition method embodiments when executed.
In this embodiment, the computer-readable storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
The optical fingerprint acquisition method can be widely used in various scenes for acquiring the biological characteristics under the screen, and is particularly suitable for acquiring the optical fingerprint under the screen of a large screen.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. An optical fingerprint acquisition method, comprising the steps of:
dividing a fingerprint image acquisition area into a plurality of acquisition sub-areas;
collecting a sub-image of the pressed collection sub-area;
carrying out gray level processing on each sub-image to obtain a new sub-image;
and splicing all the new sub-images to obtain a complete fingerprint image.
2. The optical fingerprint acquisition method of claim 1 wherein the step of dividing the fingerprint image acquisition area into a plurality of acquisition sub-areas is dividing the fingerprint image acquisition area into a plurality of fixed, non-overlapping acquisition sub-areas.
3. The method of claim 1, wherein the step of performing a gray-scale process on each of the sub-images to obtain a new sub-image further comprises,
obtaining the gray level average value of the sub-image according to the gray level value of the sub-image;
and subtracting the gray average value of the sub-image from the gray value of the sub-image to obtain a gray difference value to form a new sub-image.
4. The method of claim 1, wherein the step of stitching all the new sub-images to obtain the complete fingerprint image further comprises stitching all the new sub-images according to an original position relationship to obtain the complete fingerprint image.
5. The optical fingerprint acquisition method of claim 1, further comprising the step of smoothing the complete fingerprint image.
6. The optical fingerprint acquisition method of claim 5, wherein the step of smoothing the complete fingerprint image is to remove seams between sub-images in the complete fingerprint image by using a smoothing algorithm.
7. The method for optical fingerprint acquisition according to claim 5, wherein the step of smoothing the complete fingerprint image further comprises using a smoothing algorithm to remove the joints between the sub-images in the complete fingerprint image by using the average value of the pixels on both sides of the joints between the sub-images instead of the pixel values of the joints to obtain the final fingerprint image.
8. An optical fingerprint acquisition device comprises an area division module, an image acquisition module, an image gray level processing module, an image splicing module and an image smoothing processing module, and is characterized in that,
the region dividing module is used for dividing the image acquisition region into a plurality of acquisition sub-regions;
the image acquisition module acquires sub-images of the pressed acquisition sub-regions;
the image gray processing module is used for carrying out gray processing on the sub-image to obtain a new sub-image;
the image splicing module splices the new sub-images to obtain a complete fingerprint image;
and the image smoothing module is used for smoothing the complete fingerprint image to obtain a final fingerprint image.
9. A fingerprint acquisition chip, comprising an optical fingerprint acquisition device and a control unit, wherein the optical fingerprint acquisition device adopts the optical fingerprint acquisition device of claim 8; the control unit controls the image acquisition and processing of the optical fingerprint acquisition device.
10. A touch display comprises a fingerprint acquisition chip and a touch screen, and is characterized in that the fingerprint acquisition chip adopts the fingerprint acquisition chip of claim 9, and the touch screen is used for acquiring fingerprint images under the screen.
11. An information processing apparatus, comprising a touch display and a central processing unit, wherein the touch display is the touch display of claim 10; and the central processing unit and the touch display perform information interaction.
12. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the steps of the optical fingerprint acquisition method according to any one of claims 1 to 7.
13. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the optical fingerprint acquisition method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560341.6A CN112580556A (en) | 2020-12-25 | 2020-12-25 | Optical fingerprint acquisition method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560341.6A CN112580556A (en) | 2020-12-25 | 2020-12-25 | Optical fingerprint acquisition method and device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112580556A true CN112580556A (en) | 2021-03-30 |
Family
ID=75140171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011560341.6A Pending CN112580556A (en) | 2020-12-25 | 2020-12-25 | Optical fingerprint acquisition method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112580556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115880730A (en) * | 2023-03-08 | 2023-03-31 | 杭州八爪鱼微电子有限公司 | Fingerprint acquisition method and system, fingerprint acquisition equipment and readable storage medium |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542684A (en) * | 2003-04-28 | 2004-11-03 | 上海科比生物识别技术有限公司 | Acquisition and splicing method of three-face rolling fingerprint |
| CN101383002A (en) * | 2008-10-27 | 2009-03-11 | 北京海鑫科金高科技股份有限公司 | Finger print collecting and joining method supporting arbitrary directional rolling |
| CN103924432A (en) * | 2014-04-28 | 2014-07-16 | 辽宁大学 | Woven fabric weft skewing detection method |
| CN105021628A (en) * | 2015-07-19 | 2015-11-04 | 中北大学 | Detection method for surface defects of optical fiber image inverter |
| CN106056051A (en) * | 2016-03-25 | 2016-10-26 | 深圳市奔凯安全技术股份有限公司 | Subarea scanning type fingerprint processing method |
| CN107194326A (en) * | 2017-04-28 | 2017-09-22 | 广东欧珀移动通信有限公司 | Fingerprint collecting method and related product |
| CN108648152A (en) * | 2018-04-11 | 2018-10-12 | 南京理工大学 | The even Surface Defects in Steel Plate method for correcting image of uneven illumination based on luminance proportion |
| CN109858227A (en) * | 2019-02-02 | 2019-06-07 | Oppo广东移动通信有限公司 | Fingerprint input method, device, electronic equipment and storage medium |
| CN109976615A (en) * | 2019-03-28 | 2019-07-05 | Oppo广东移动通信有限公司 | Fingerprint image processing method and relevant apparatus |
| CN110268418A (en) * | 2019-05-06 | 2019-09-20 | 深圳市汇顶科技股份有限公司 | The method, apparatus and electronic equipment of fingerprint detection |
| CN110378856A (en) * | 2019-07-22 | 2019-10-25 | 福建农林大学 | A kind of tunnel surface two-dimensional laser image enhancement processing method |
| CN110717429A (en) * | 2019-09-27 | 2020-01-21 | 联想(北京)有限公司 | Information processing method, electronic equipment and computer readable storage medium |
| CN111178174A (en) * | 2019-12-12 | 2020-05-19 | 美康盛德医疗科技(苏州)有限公司 | Urine tangible component image identification method based on deep convolutional neural network |
| CN111191615A (en) * | 2020-01-02 | 2020-05-22 | 京东方科技集团股份有限公司 | Screen fingerprint acquisition method and device, electronic equipment and computer storage medium |
| CN111209872A (en) * | 2020-01-09 | 2020-05-29 | 浙江工业大学 | Real-time rolling fingerprint splicing method based on dynamic programming and multi-objective optimization |
| CN111639521A (en) * | 2020-04-14 | 2020-09-08 | 北京迈格威科技有限公司 | Fingerprint synthesis method and device, electronic equipment and computer readable storage medium |
-
2020
- 2020-12-25 CN CN202011560341.6A patent/CN112580556A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1542684A (en) * | 2003-04-28 | 2004-11-03 | 上海科比生物识别技术有限公司 | Acquisition and splicing method of three-face rolling fingerprint |
| CN101383002A (en) * | 2008-10-27 | 2009-03-11 | 北京海鑫科金高科技股份有限公司 | Finger print collecting and joining method supporting arbitrary directional rolling |
| CN103924432A (en) * | 2014-04-28 | 2014-07-16 | 辽宁大学 | Woven fabric weft skewing detection method |
| CN105021628A (en) * | 2015-07-19 | 2015-11-04 | 中北大学 | Detection method for surface defects of optical fiber image inverter |
| CN106056051A (en) * | 2016-03-25 | 2016-10-26 | 深圳市奔凯安全技术股份有限公司 | Subarea scanning type fingerprint processing method |
| CN107194326A (en) * | 2017-04-28 | 2017-09-22 | 广东欧珀移动通信有限公司 | Fingerprint collecting method and related product |
| CN108648152A (en) * | 2018-04-11 | 2018-10-12 | 南京理工大学 | The even Surface Defects in Steel Plate method for correcting image of uneven illumination based on luminance proportion |
| CN109858227A (en) * | 2019-02-02 | 2019-06-07 | Oppo广东移动通信有限公司 | Fingerprint input method, device, electronic equipment and storage medium |
| CN109976615A (en) * | 2019-03-28 | 2019-07-05 | Oppo广东移动通信有限公司 | Fingerprint image processing method and relevant apparatus |
| CN110268418A (en) * | 2019-05-06 | 2019-09-20 | 深圳市汇顶科技股份有限公司 | The method, apparatus and electronic equipment of fingerprint detection |
| CN110378856A (en) * | 2019-07-22 | 2019-10-25 | 福建农林大学 | A kind of tunnel surface two-dimensional laser image enhancement processing method |
| CN110717429A (en) * | 2019-09-27 | 2020-01-21 | 联想(北京)有限公司 | Information processing method, electronic equipment and computer readable storage medium |
| CN111178174A (en) * | 2019-12-12 | 2020-05-19 | 美康盛德医疗科技(苏州)有限公司 | Urine tangible component image identification method based on deep convolutional neural network |
| CN111191615A (en) * | 2020-01-02 | 2020-05-22 | 京东方科技集团股份有限公司 | Screen fingerprint acquisition method and device, electronic equipment and computer storage medium |
| CN111209872A (en) * | 2020-01-09 | 2020-05-29 | 浙江工业大学 | Real-time rolling fingerprint splicing method based on dynamic programming and multi-objective optimization |
| CN111639521A (en) * | 2020-04-14 | 2020-09-08 | 北京迈格威科技有限公司 | Fingerprint synthesis method and device, electronic equipment and computer readable storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115880730A (en) * | 2023-03-08 | 2023-03-31 | 杭州八爪鱼微电子有限公司 | Fingerprint acquisition method and system, fingerprint acquisition equipment and readable storage medium |
| CN115880730B (en) * | 2023-03-08 | 2023-08-04 | 杭州八爪鱼微电子有限公司 | Fingerprint acquisition method, fingerprint acquisition system, fingerprint acquisition equipment and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7869641B2 (en) | System and method for finding regions of interest for microscopic digital montage imaging | |
| JP2008225838A (en) | Apparatus, method, and program for face feature point detection | |
| CN109829904B (en) | Method and device for detecting dust on screen, electronic equipment and readable storage medium | |
| US20110102628A1 (en) | Foreground/Background Segmentation in Digital Images | |
| CN106604005B (en) | A kind of projection TV Atomatic focusing method and system | |
| CN111474177A (en) | Liquid crystal screen backlight foreign matter defect detection method based on computer vision | |
| CN112528888A (en) | Optical fingerprint acquisition method and device, electronic equipment and storage medium | |
| US20200218343A1 (en) | Gaze point compensation method and apparatus in display device, and display device | |
| JP2007285754A (en) | Flaw detection method and flaw detector | |
| CN113469921B (en) | Image defect repairing method, system, computer device and storage medium | |
| US20130329948A1 (en) | Subject tracking device and subject tracking method | |
| US8655071B2 (en) | Methods and systems for determining a document region-of-interest in an image | |
| KR101058726B1 (en) | Image correction device and method for removing lighting components | |
| CN112580556A (en) | Optical fingerprint acquisition method and device, electronic equipment and storage medium | |
| JP2005172559A (en) | Method and device for detecting line defect on panel | |
| CN1366270A (en) | Technology for removing false image of liquid crystal projector | |
| CN112581481B (en) | Image processing method and device, electronic equipment and computer readable storage medium | |
| CN112507917A (en) | Optical fingerprint identification method and device, electronic equipment and storage medium | |
| CN110933304B (en) | Method and device for determining to-be-blurred region, storage medium and terminal equipment | |
| JP4335229B2 (en) | QR code recognition device, QR code recognition device control method, QR code recognition device control program, and computer-readable recording medium recording the same | |
| EP3175609B1 (en) | Processing data representing an image | |
| CN112991469A (en) | Face brightness compensation method and device and computer readable storage medium | |
| CN113076952B (en) | Text automatic recognition and enhancement method and device | |
| JP2004326188A (en) | Large screen touch panel system and search/display system | |
| RU2346331C1 (en) | Method of automatic estimate of lcd data display correctness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |