CN110298290B - Vein identification method and device, electronic equipment and storage medium - Google Patents
Vein identification method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application discloses vein identification method, device, electronic equipment and storage medium, which are applied to the electronic equipment comprising a vein acquisition module, and the method comprises the following steps: adopting a vein acquisition module to carry out first vein acquisition on the palm of the user, and identifying whether the first vein palm print image and the second vein palm print image both comprise a vein palm print missing area or not after the first vein acquisition identification fails; if the vein and palm print missing areas are included, carrying out secondary vein collection on the palm of the user by using the vein collection module, wherein the transmission power of the vein identification module in the secondary vein collection is larger than that of the vein identification module in the primary vein collection; and after the second vein collection identification is successful, determining that the vein palm print verification is passed. By adopting the method and the device, the identification success rate of vein palm print identification is improved.
Description
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a vein identification method and apparatus, an electronic device, and a storage medium.
Background
At present, when vein recognition of a palm is detected, the vein palm print recognition can be carried out only by collecting a complete vein palm print. If the palm of the user is disabled (for example, the hand has scars), the palm is still used for vein recognition, and due to the fact that partial palmprints are lost, a high false rejection rate occurs, and the recognition success rate of vein and palmprint recognition is low.
Disclosure of Invention
The embodiment of the application provides a vein identification method, a vein identification device, electronic equipment and a storage medium, which are used for improving the identification success rate of vein palm print identification.
In a first aspect, an embodiment of the present application provides a vein identification method, where the method is applied to an electronic device including a vein collection module, and the method includes:
performing first vein collection on the palm of the user by using the vein collection module to obtain a first vein palm print image and a second vein palm print image;
calculating at least one first matching degree of the first vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one second matching degree of the second vein palm print image and at least one pre-stored vein palm print image template;
if any one of the at least one first matching degree is smaller than a preset matching degree threshold value, and any one of the at least one second matching degree is smaller than the preset matching degree threshold value, identifying whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area;
if the vein and palm print missing areas are included, performing second vein collection on the palm of the user by using the vein collection module to obtain a third vein and palm print image and a fourth vein and palm print image, wherein the transmitting power of the vein identification module in the second vein collection is larger than that of the vein identification module in the first vein collection;
calculating at least one third matching degree of the third vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one fourth matching degree of the fourth vein palm print image and at least one pre-stored vein palm print image template;
and if the matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or the matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree, determining that the vein palm print verification is passed.
In a second aspect, an embodiment of the present application provides a vein identification device, where the vein identification device is applied to an electronic device including a vein collection module, the vein identification device includes:
the acquisition unit is used for carrying out first vein acquisition on the palm of the user by adopting the vein acquisition module to obtain a first vein palm print image and a second vein palm print image;
the calculation unit is used for calculating at least one first matching degree between the first vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one second matching degree between the second vein palm print image and at least one pre-stored vein palm print image template;
the identification unit is used for identifying whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area or not under the condition that any one of the at least one first matching degree is smaller than a preset matching degree threshold value and any one of the at least one second matching degree is smaller than the preset matching degree threshold value;
the acquisition unit is further configured to perform second vein acquisition on the palm of the user by using the vein acquisition module under the condition that the first vein palm print image and the second vein palm print image both include a vein palm print missing region, so as to obtain a third vein palm print image and a fourth vein palm print image, and the transmitting power of the vein identification module at the second vein acquisition is greater than that of the vein identification module at the first vein acquisition;
the calculation unit is further configured to calculate at least one third matching degree between the third vein palm print image and at least one pre-stored vein palm print image template, and calculate at least one fourth matching degree between the fourth vein palm print image and at least one pre-stored vein palm print image template;
a determining unit, configured to determine that vein palm print verification passes when a matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or when a matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree.
In a third aspect, an embodiment of the present application provides an electronic device, where the electronic device includes a vein collection module, and the electronic device further includes a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and where the program includes instructions for executing the steps in the method according to the first aspect of the embodiment of the present application.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program for electronic data exchange, the computer program causing a computer to perform some or all of the steps described in the method according to the first aspect of the embodiments of the present application.
In a fifth aspect, embodiments of the present application provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps described in the method according to the first aspect of embodiments of the present application. The computer program product may be a software installation package.
It can be seen that, in the embodiment of the present application, the vein acquisition module is used to perform a first vein acquisition on a palm of a user to obtain a first vein palm print image and a second vein palm print image; calculating at least one first matching degree of the first vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one second matching degree of the second vein palm print image and at least one pre-stored vein palm print image template; if any one of the at least one first matching degree is smaller than a preset matching degree threshold value, and any one of the at least one second matching degree is smaller than the preset matching degree threshold value, identifying whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area; if the vein and palm print missing areas are included, performing second vein collection on the palm of the user by using the vein collection module to obtain a third vein and palm print image and a fourth vein and palm print image, wherein the transmitting power of the vein identification module in the second vein collection is larger than that of the vein identification module in the first vein collection; calculating at least one third matching degree of the third vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one fourth matching degree of the fourth vein palm print image and at least one pre-stored vein palm print image template; and if the matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or the matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree, determining that the vein palm print verification is passed. Implement this application embodiment, can be after vein identification failure for the first time, if detect vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of the transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a vein identification method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another vein identification method provided in an embodiment of the present application;
fig. 4 is a block diagram of functional units of a vein recognition apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another electronic device provided in an embodiment of the present application.
Detailed Description
The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions.
Electronic devices may include various handheld devices, vehicle mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication capabilities, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminal Equipment (terminal device), and so forth.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, where the electronic device 100 includes: the vein collection device comprises a shell 110, a circuit board 120 arranged in the shell 110, a display screen 130 arranged on the shell 110 and a vein collection module 140, wherein a processor 121 and a memory 122 are arranged on the circuit board 120.
The vein collection module 140 may be integrally disposed under the display screen 130, or the vein collection module 140 may be disposed on the back of the housing 110. In particular, the vein collection module 140 may include an infrared lamp and a vein image collection module. When vein collection module 140 gathers vein image, the infrared lamp of vein collection module 140 outwards launches the infrared light, because heme in the blood of vein has the ability of absorbing the infrared light, when the skin of human vein was shone to the infrared light, the infrared light can pass skin, and partly infrared light can be absorbed by the vein under the skin, and another part infrared light can be reflected, and vein collection module 140 can generate vein line image according to the infrared light of reflection. The vein collection module 140 can collect vein images of fingers, palms and the like with vein distribution.
In this application embodiment, can be after vein identification failure for the first time, if detect vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Referring to fig. 2, fig. 2 is a schematic flow chart of a vein identification method applied to an electronic device including a vein collection module according to an embodiment of the present disclosure, where the vein identification method includes the following steps.
The electronic equipment adopts a vein collection module to carry out vein collection for the first time on the palm of the user to obtain a first vein palm print image and a second vein palm print image.
In this application embodiment, vein collection module can gather the vein palm print image of user's palm to at the in-process of once vein collection, can gather two vein palm print images, follow-up vein palm print verification of can carrying out twice improves the success rate of vein palm print discernment.
The method and the device can be applied to scenes such as screen unlocking, electronic payment and safe login.
202, the electronic device calculates at least one first matching degree between the first vein palm print image and at least one pre-stored vein palm print image template, and calculates at least one second matching degree between the second vein palm print image and at least one pre-stored vein palm print image template.
In the embodiment of the application, at least one pre-stored vein palm print image template is generated according to a pre-recorded vein palm print image. Specifically, before executing step 202, the electronic device may start an entry flow of the vein palm print image template, a display screen of the electronic device may display a vein palm print entry animation to display an entry progress of a palm print vein palm print, the electronic device prompts a user whether to adjust a distance between a palm and the display screen of the electronic device, an angle between a palm plane and the display screen of the electronic device according to a feature and a feature definition of the entered vein palm print, so as to enter more clear vein palm print features of the palm, and generate the vein palm print image template according to the feature of the entered vein palm print, thereby improving feature richness of the vein palm print template.
Wherein, a plurality of vein palm print image templates can be typeeed to electronic equipment, for example, can typeeed the vein palm print image template of two palms of a user, and vein palm print recognition can all be carried out to two palms of user, when the inconvenient operation of user's one hand, adopts another hand to carry out vein palm print recognition, improves the convenience of vein palm print recognition. For another example, vein palm print image templates of palms of multiple users may be entered, and the electronic device may be subjected to vein palm print verification by the multiple users. For example, for a public (e.g., a family) electronic device, entering vein palm print image templates of all users with public qualifications can satisfy the requirements of multiple users while improving the security of the electronic device.
The electronic equipment calculates at least one first matching degree of the first vein palm print image and at least one pre-stored vein palm print image template, and specifically comprises the following steps:
the electronic equipment calculates the matching degree of the first vein palm print image and the pre-stored vein palm print image templates one by one, and stops calculating the matching degree of the first vein palm print image and the pre-stored vein palm print image templates which are not matched if the matching degree of the first vein palm print image and one of the pre-stored vein palm print image templates reaches a preset matching degree threshold value. The vein palm print recognition can be determined, and the next operation (such as unlocking the screen, executing the payment operation, logging in the application program and the like) can be carried out.
When the electronic equipment calculates the matching degree of the first vein palm print image and the pre-stored vein palm print image templates one by one, the vein palm print image template which passes the vein palm print identification verification last time on the electronic equipment can be preferentially matched with the first vein palm print image. When the electronic equipment is used by the same user, the habit of the user of one person cannot be changed easily, for example, one user can always use the palm of the left hand to carry out vein palm print identification verification, and preferentially adopts the vein palm print template successfully verified last time to carry out matching degree calculation, so that the vein palm print identification speed can be improved.
In step 202, the electronic device calculates at least one first matching degree between the first vein palm print image and at least one pre-stored vein palm print image template, and calculates at least one second matching degree between the second vein palm print image and at least one pre-stored vein palm print image template, and these two steps may be executed simultaneously or sequentially. If the calculated matching degree of the two steps is larger than or equal to the preset matching degree threshold value, the vein palm print recognition is determined to be passed.
And 203, if any one of the at least one first matching degree is smaller than a preset matching degree threshold value and any one of the at least one second matching degree is smaller than a preset matching degree threshold value, the electronic equipment identifies whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area.
In this embodiment of the application, if any one of the at least one first matching degree is smaller than a preset matching degree threshold, and any one of the at least one second matching degree is smaller than the preset matching degree threshold, it indicates that both the first venous palm print image and the second venous palm print image fail to be matched, and at this time, the electronic device further determines whether venous palm print missing exists in the first venous palm print image and the second venous palm print image.
The electronic equipment identifies whether the first vein palm print image and the second vein palm print image both comprise a vein palm print missing area, and specifically comprises the following steps:
the electronic equipment determines a first vein feature area in the first vein palm print image and determines a second vein feature area in the second vein palm print image;
the electronic equipment identifies whether a vein feature blank area larger than a preset area threshold exists in the first vein feature area or not, and identifies whether a vein feature blank area larger than the preset area threshold exists in the second vein feature area or not;
if both exist, the electronic equipment determines that the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area.
The electronic device can determine a first vein feature area in the first vein palm print image and determine a second vein feature area in the second vein palm print image through an image edge processing algorithm.
The specific process of the image edge processing algorithm comprises gray processing, binarization and edge segmentation.
In an embodiment of the present application, the first vein feature region and the second vein feature region are closed regions. Outside this area, there is a blank area of venous features. The vein feature area and vein feature blank area are included in the area. The vein feature region refers to a region including a vein feature. The vein feature blank area refers to an area which does not contain any vein features.
The preset area threshold may be preset and stored in a memory (e.g., a non-volatile memory) of the electronic device. If the palm of the user's hand has no current infrared-impenetrable scar and no current infrared-impenetrable covering, the vein-feature free area within the first vein-feature area is typically a plurality of small areas separated by veins, which are typically much smaller in area than the vein-feature free area outside the first vein-feature area. The preset area threshold may be set larger than an area of a region having a largest area among the plurality of small regions. If the palm of the user has a covering which cannot penetrate scars by the current infrared rays and cannot penetrate by the current infrared rays, the area of the vein feature blank area in the first vein feature area is relatively large, and the area of the vein feature blank area is often larger than the preset area threshold.
If the first venous palm print image and the second venous palm print image both include a venous palm print missing region, it can be determined that there is an infrared-opaque scar or no infrared-opaque covering in the palm of the user's hand.
The scars which cannot be penetrated by infrared rays at present are also divided into two types: scars that are penetrable by infrared light (e.g., scars that are not penetrable by current infrared light at too low an intensity), scars that are not penetrable by infrared light at all. If the first type is used, the intensity of infrared rays is increased, and if the second type is used, vein recognition cannot be performed on the scar part.
Optionally, if the first venous palm print image and the second venous palm print image do not include a venous palm print missing region, and the electronic device does not belong to the palm print missing condition, the electronic device may directly determine that the venous palm print verification fails, and does not need to acquire the venous palm print image for the second time, so that the speed of venous palm print identification is increased.
204, if the vein and palm print missing areas are included, the electronic device adopts the vein collection module to perform second vein collection on the palm of the user to obtain a third vein and palm print image and a fourth vein and palm print image, and the transmitting power of the vein identification module at the second vein collection is larger than that of the vein identification module at the first vein collection.
205, the electronic device calculates at least one third matching degree between the third vein palm print image and the at least one pre-stored vein palm print image template, and calculates at least one fourth matching degree between the fourth vein palm print image and the at least one pre-stored vein palm print image template.
206, if the matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or the matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree, the electronic device determines that the vein palm print verification is passed.
Optionally, after the electronic device determines that the palm passes the vein palm print verification, the electronic device may determine that the palm of the user is a palm missing from the second type of palm print.
The second type of palm print missing palm is a palm which cannot be penetrated by low-intensity infrared rays in partial areas. Such as where there is a thin scar or thin cocoon on the palm. Under the condition, the transmitting power of the vein acquisition module is directly improved, the intensity of infrared rays transmitted by the vein acquisition module is increased, and the recognition rate of vein palm print recognition can be improved.
The identification process of the second vein collection in steps 204 to 205 is similar to the identification process of the vein collection in steps 201 to 203, and reference may be made to the related description of steps 201 to 203, which is not described herein again.
When the electronic equipment adopts the vein collection module to carry out vein collection for the second time on the palm of the user, the transmitting power of the vein identification module is improved, and the intensity of infrared light transmitted by the vein identification module is enhanced. If the vein palm print missing area is the area corresponding to the scar which can be penetrated by infrared rays, vein recognition can be carried out after the transmitting power of the vein recognition module is improved, and the success rate of vein recognition is improved.
In this application embodiment, can be after vein identification failure for the first time, if detect vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Referring to fig. 3, fig. 3 is a schematic flowchart of another vein identification method according to an embodiment of the present disclosure, where the method is applied to an electronic device including a vein collection module. Fig. 3 is further optimized on the basis of fig. 2, and the vein identification method may include the following steps.
301, the electronic device adopts the vein collection module to carry out the first vein collection on the palm of the user to obtain a first vein palm print image and a second vein palm print image.
And 302, the electronic equipment calculates at least one first matching degree of the first vein palm print image and at least one pre-stored vein palm print image template, and calculates at least one second matching degree of the second vein palm print image and at least one pre-stored vein palm print image template.
303, if any one of the at least one first matching degree is smaller than a preset matching degree threshold, and any one of the at least one second matching degree is smaller than the preset matching degree threshold, the electronic device identifies whether the first venous palm print image and the second venous palm print image both include a venous palm print missing region.
304, if the vein palm print missing regions are included, the electronic device calculates the similarity between the vein palm print missing region included in the first vein palm print image and the vein palm print missing region included in the second vein palm print image.
305, if the similarity between the vein palm print missing area contained in the first vein palm print image and the vein palm print missing area contained in the second vein palm print image is greater than the preset similarity threshold, the electronic device adopts the vein acquisition module to perform second vein acquisition on the palm of the user to obtain a third vein palm print image and a fourth vein palm print image, and the transmitting power of the vein identification module in the second vein acquisition is greater than that of the vein identification module in the first vein acquisition.
In this embodiment of the application, the electronic device may calculate the similarity between the vein palm print missing region included in the first vein palm print image and the vein palm print missing region included in the second vein palm print image by calculating the area size and the shape distribution of the two vein palm print missing regions. If the similarity of the two is greater than the preset similarity threshold, the similarity of the two is high, and the vein palm print missing region is determined.
Optionally, if the similarity between the vein palm print missing region included in the first vein palm print image and the vein palm print missing region included in the second vein palm print image is less than or equal to the preset similarity threshold, the electronic device determines that the vein palm print verification fails.
If the similarity between the vein palm print missing region contained in the first vein palm print image and the vein palm print missing region contained in the second vein palm print image is smaller than or equal to a preset similarity threshold, the similarity between the vein palm print missing region and the vein palm print missing region is low, the possibility of erroneous judgment is considered, and the vein palm print verification is determined to be failed.
Optionally, after the electronic device determines that the vein palm print authentication fails, step 301 may be executed again.
And 306, the electronic equipment calculates at least one third matching degree of the third vein palm print image and the at least one prestored vein palm print image template, and calculates at least one fourth matching degree of the fourth vein palm print image and the at least one prestored vein palm print image template.
307, if the matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or the matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree, the electronic device determines that the vein palm print verification is passed.
The specific implementation of steps 301 to 303 in the embodiment of the present application may refer to the description of steps 201 to 203 shown in fig. 2, and the specific implementation of steps 305 to 307 may refer to the description of steps 204 to 206 shown in fig. 2, which is not described herein again.
In this application embodiment, can be after vein identification failure for the first time, whether detect for vein palm print disappearance, if confirm for vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of the transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Optionally, the method shown in fig. 3 may further include the following steps:
(11) if any one of the at least one third matching degree is smaller than a preset matching degree threshold value, and any one of the at least one fourth matching degree is smaller than a preset matching degree threshold value, the electronic equipment determines that the palm of the user is a palm print missing palm of the first type;
(12) the electronic equipment detects whether a vein palm print image template with the highest matching degree with a first vein palm print image in at least one pre-stored vein palm print image template, a vein palm print image template with the highest matching degree with a second vein palm print image in at least one pre-stored vein palm print image template, a vein palm print image template with the highest matching degree with a third vein palm print image in at least one pre-stored vein palm print image template and a vein palm print image template with the highest matching degree with a fourth vein palm print image in at least one pre-stored vein palm print image template are the same target vein palm print template or not;
(13) if so, the electronic equipment removes the template data corresponding to the vein palm print missing area in the target vein palm print template to obtain a new target vein palm print template.
In the embodiment of the application, the first palm print missing palm is a palm which cannot be penetrated by infrared rays in a partial area. Such as the case with thicker scars or thicker cocoons on the palm. In this case, in order to avoid the subsequent failure of vein recognition on the palm with the missing palm of the first type, the original vein palm print template may be corrected to obtain a new vein palm print template.
First, it is necessary to determine which template of the at least one pre-stored vein palm print image template is a template matching the palm print of the user. Specifically, the electronic device may determine a vein palm print image template with the highest matching degree with a first vein palm print image in the at least one vein palm print image template, a vein palm print image template with the highest matching degree with a second vein palm print image in the at least one vein palm print image template, a vein palm print image template with the highest matching degree with a third vein palm print image in the at least one vein palm print image template, and a vein palm print image template with the highest matching degree with a fourth vein palm print image in the at least one vein palm print image template, and determine whether the four vein palm print image templates are the same target vein palm print template, if so, determine that the target vein palm print template is the template matched with the palm print of the user, and modify the target vein palm print template to obtain a new vein palm print template. And the electronic equipment removes the template data corresponding to the vein palm print missing area in the target vein palm print template to obtain a new target vein palm print template. Because the new target palm print template does not include template data corresponding to the vein palm print missing region, when the first type of palm print missing palm is identified subsequently, veins in the palm print missing region do not need to be compared, and the identification success rate of vein palm print identification of the first type of palm print missing palm can be improved.
Optionally, after the step (13) is executed, the following steps may also be executed:
(21) the electronic equipment removes the vein palm print missing area from the first vein palm print image to obtain a corrected first vein palm print image, and removes the vein palm print missing area from the second vein palm print image to obtain a corrected second vein palm print image;
(22) the electronic equipment calculates the matching degree of the corrected first vein palm print image and the new target vein palm print template, and calculates the matching degree of the corrected second vein palm print image and the new target vein palm print template;
(23) and if the matching degree of the corrected first vein palm print image and the new target vein palm print template is greater than a preset matching degree threshold value, or the matching degree of the corrected second vein palm print image and the new target vein palm print template is greater than a preset matching degree threshold value, the electronic equipment determines that the vein palm print verification is passed.
In the embodiment of the application, after obtaining a new target vein palm print template, the electronic device performs corresponding correction on the first vein palm print image and the second vein palm print image, removes a vein palm print missing area in the first vein palm print image and the second vein palm print image, obtains the corrected first vein palm print image and the corrected second vein palm print image, calculates a matching degree between the corrected first vein palm print image and the new target vein palm print template, and calculates a matching degree between the corrected second vein palm print image and the new target vein palm print template. Because the corrected first vein palm print image and the corrected second vein palm print image have no images of vein palm print missing areas and the target vein palm print template has no template data corresponding to the vein palm print missing areas, the interference of the vein palm print missing areas on vein palm print recognition is eliminated, and the recognition success rate of vein palm print recognition of the first palm print missing palm is improved.
The above embodiments mainly introduce the scheme of the embodiments of the present application from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
The following is an embodiment of the apparatus of the present application, which is used to execute the method implemented by the embodiment of the method of the present application. Referring to fig. 4, fig. 4 is a block diagram of functional units of a vein recognition apparatus according to an embodiment of the present disclosure, which is applied to an electronic device including a vein collection module, where the vein recognition apparatus 400 includes:
the acquisition unit 401 is configured to perform a first vein acquisition on a palm of a user by using the vein acquisition module to obtain a first vein palm print image and a second vein palm print image;
a calculating unit 402, configured to calculate at least one first matching degree between the first vein palm print image and at least one pre-stored vein palm print image template, and calculate at least one second matching degree between the second vein palm print image and at least one pre-stored vein palm print image template;
an identifying unit 403, configured to identify whether the first venous palm print image and the second venous palm print image both include a venous palm print missing region when any one of the at least one first matching degree is smaller than a preset matching degree threshold and any one of the at least one second matching degree is smaller than the preset matching degree threshold;
the acquisition unit 401 is further configured to perform, when the first vein palm print image and the second vein palm print image both include a vein palm print missing region, second vein acquisition on the palm of the user by using the vein acquisition module to obtain a third vein palm print image and a fourth vein palm print image, where a transmission power of the vein identification module at the second vein acquisition is greater than a transmission power of the vein identification module at the first vein acquisition;
the calculating unit 402 is further configured to calculate at least one third matching degree between the third vein palm print image and at least one pre-stored vein palm print image template, and calculate at least one fourth matching degree between the fourth vein palm print image and at least one pre-stored vein palm print image template;
a determining unit 404, configured to determine that vein palm print verification passes when there is a matching degree that is greater than the preset matching degree threshold in the at least one third matching degree or there is a matching degree that is greater than the preset matching degree threshold in the at least one fourth matching degree.
In one possible example, the calculating unit 402 is further configured to, after the identifying unit 403 identifies whether the first venous palm print image and the second venous palm print image both include a venous palm print missing region, calculate a similarity between the venous palm print missing region included in the first venous palm print image and the venous palm print missing region included in the second venous palm print image in a case that the first venous palm print image and the second venous palm print image both include a venous palm print missing region;
the acquisition unit 401 is further configured to perform, when the similarity between the vein palm print missing region included in the first vein palm print image and the vein palm print missing region included in the second vein palm print image is greater than a preset similarity threshold, second vein acquisition on the palm of the user by using the vein acquisition module.
Optionally, the determining unit 404 is further configured to determine that the vein palm print verification fails when a similarity between a vein palm print missing region included in the first vein palm print image and a vein palm print missing region included in the second vein palm print image is less than or equal to the preset similarity threshold.
Optionally, the vein identification apparatus 400 may further include a detection unit 405 and a processing unit 406.
The determining unit 404 is further configured to determine that the palm of the user is a palm print missing palm of a first type when any one of the at least one third matching degree is smaller than the preset matching degree threshold and any one of the at least one fourth matching degree is smaller than the preset matching degree threshold;
the detection unit 405 is configured to detect whether a vein palm print image template with the highest matching degree with the first vein palm print image in the at least one pre-stored vein palm print image template, a vein palm print image template with the highest matching degree with the second vein palm print image in the at least one pre-stored vein palm print image template, a vein palm print image template with the highest matching degree with the third vein palm print image in the at least one pre-stored vein palm print image template, and a vein palm print image template with the highest matching degree with the fourth vein palm print image in the at least one pre-stored vein palm print image template are the same target vein palm print template;
the processing unit 406 is further configured to, if the detection result of the detecting unit is yes, clear template data corresponding to the vein palm print missing area in the target vein palm print template to obtain a new target vein palm print template.
Optionally, the processing unit 406 is further configured to, after a new target vein palm print template is obtained, remove the vein palm print missing region from the first vein palm print image to obtain a modified first vein palm print image, and remove the vein palm print missing region from the second vein palm print image to obtain a modified second vein palm print image;
the calculating unit 402 is further configured to calculate a matching degree between the corrected first vein palm print image and the new target vein palm print template, and calculate a matching degree between the corrected second vein palm print image and the new target vein palm print template;
the determining unit 404 is further configured to determine that vein palm print verification is passed when the matching degree between the corrected first vein palm print image and the new target vein palm print template is greater than the preset matching degree threshold, or the matching degree between the corrected second vein palm print image and the new target vein palm print template is greater than the preset matching degree threshold.
The determining unit 404 is further configured to determine that the palm of the user is a palm missing palm of the second type after the vein palm print verification is passed.
The determining unit 404 is further configured to determine that the vein palm print verification fails if neither the first vein palm print image nor the second vein palm print image includes a vein palm print missing region.
It should be noted that the acquisition unit 401, the calculation unit 402, the identification unit 403, the determination unit 404, the detection unit 405, and the processing unit 406 may be implemented by a processor.
In this application embodiment, can be after vein identification failure for the first time, if detect vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Referring to fig. 5, fig. 5 is a schematic structural diagram of another electronic device according to an embodiment of the present disclosure, where the electronic device 500 includes a vein collection module, the electronic device 500 further includes a memory, a communication interface, and one or more programs, the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the methods shown in fig. 2 to 3.
In this application embodiment, can be after vein identification failure for the first time, if detect vein palm print disappearance, carry out vein identification for the second time after increasing the infrared ray's of transmission of vein collection module power, to the palm print scar that the infrared ray can pierce through, can discern through the infrared ray's of the transmission of increasing vein collection module power to improve vein palm print identification's discernment success rate.
Embodiments of the present application also provide a computer storage medium storing a computer program for electronic data exchange, the computer program causing a computer to perform part or all of the steps of any one of the methods as described in the above method embodiments, the computer including an electronic device.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the methods as described in the above method embodiments. The computer program product may be a software installation package, the computer comprising an electronic device.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a stand-alone product. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the above-mentioned method of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A vein identification method is applied to an electronic device comprising a vein collection module, and comprises the following steps:
performing first vein collection on the palm of the user by using the vein collection module to obtain a first vein palm print image and a second vein palm print image;
calculating at least one first matching degree of the first vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one second matching degree of the second vein palm print image and at least one pre-stored vein palm print image template;
if any one of the at least one first matching degree is smaller than a preset matching degree threshold value, and any one of the at least one second matching degree is smaller than the preset matching degree threshold value, identifying whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area;
if the vein and palm print missing areas are included, performing second vein collection on the palm of the user by using the vein collection module to obtain a third vein and palm print image and a fourth vein and palm print image, wherein the transmitting power of the vein identification module in the second vein collection is larger than that of the vein identification module in the first vein collection;
calculating at least one third matching degree of the third vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one fourth matching degree of the fourth vein palm print image and at least one pre-stored vein palm print image template;
if the matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or the matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree, determining that the vein palm print verification is passed;
after identifying whether the first venous palm print image and the second venous palm print image both include a venous palm print missing region, and before performing second-time venous acquisition on the palm of the user by using the venous acquisition module, the method further includes:
if the vein palm print missing regions are included, calculating the similarity between the vein palm print missing region included in the first vein palm print image and the vein palm print missing region included in the second vein palm print image;
and if the similarity between the vein palm print missing region contained in the first vein palm print image and the vein palm print missing region contained in the second vein palm print image is larger than a preset similarity threshold, executing the step of performing second vein collection on the palm of the user by adopting the vein collection module.
2. The method of claim 1, further comprising:
and if the similarity between the vein palm print missing region contained in the first vein palm print image and the vein palm print missing region contained in the second vein palm print image is smaller than or equal to the preset similarity threshold, determining that the vein palm print verification fails.
3. The method of claim 1, further comprising:
if any one of the at least one third matching degree is smaller than the preset matching degree threshold value, and any one of the at least one fourth matching degree is smaller than the preset matching degree threshold value, determining that the palm of the user is a palm print missing palm of the first type;
detecting whether a vein palm print image template with the highest matching degree with the first vein palm print image in the at least one prestored vein palm print image template, a vein palm print image template with the highest matching degree with the second vein palm print image in the at least one prestored vein palm print image template, a vein palm print image template with the highest matching degree with the third vein palm print image in the at least one prestored vein palm print image template, and a vein palm print image template with the highest matching degree with the fourth vein palm print image in the at least one prestored vein palm print image template are the same target vein palm print template or not;
and if so, removing template data corresponding to the vein palm print missing area in the target vein palm print template to obtain a new target vein palm print template.
4. The method of claim 3, wherein after obtaining the new target vein palm print template, the method further comprises:
removing the vein palm print missing region from the first vein palm print image to obtain a corrected first vein palm print image, and removing the vein palm print missing region from the second vein palm print image to obtain a corrected second vein palm print image;
calculating the matching degree of the corrected first vein palm print image and the new target vein palm print template, and calculating the matching degree of the corrected second vein palm print image and the new target vein palm print template;
and if the matching degree of the corrected first vein palm print image and the new target vein palm print template is greater than the preset matching degree threshold value, or the matching degree of the corrected second vein palm print image and the new target vein palm print template is greater than the preset matching degree threshold value, determining that vein palm print verification is passed.
5. The method of claim 1, wherein after the determination is verified by a venous palm print, the method further comprises:
and determining the palm of the user as a palm missing palm of the second type.
6. The method according to any one of claims 1 to 5, further comprising:
and if the first venous palm print image and the second venous palm print image do not comprise the venous palm print missing area, determining that the venous palm print verification fails.
7. A vein recognition device is applied to an electronic device comprising a vein collection module, and comprises:
the acquisition unit is used for carrying out first vein acquisition on the palm of the user by adopting the vein acquisition module to obtain a first vein palm print image and a second vein palm print image;
the calculation unit is used for calculating at least one first matching degree between the first vein palm print image and at least one pre-stored vein palm print image template, and calculating at least one second matching degree between the second vein palm print image and at least one pre-stored vein palm print image template;
the identification unit is used for identifying whether the first venous palm print image and the second venous palm print image both comprise a venous palm print missing area or not under the condition that any one of the at least one first matching degree is smaller than a preset matching degree threshold value and any one of the at least one second matching degree is smaller than the preset matching degree threshold value;
the acquisition unit is further configured to perform second vein acquisition on the palm of the user by using the vein acquisition module under the condition that the first vein palm print image and the second vein palm print image both include a vein palm print missing region, so as to obtain a third vein palm print image and a fourth vein palm print image, and the transmitting power of the vein identification module at the second vein acquisition is greater than that of the vein identification module at the first vein acquisition;
the calculation unit is further configured to calculate at least one third matching degree between the third vein palm print image and at least one pre-stored vein palm print image template, and calculate at least one fourth matching degree between the fourth vein palm print image and at least one pre-stored vein palm print image template;
a determining unit, configured to determine that vein palm print verification passes when a matching degree greater than the preset matching degree threshold exists in the at least one third matching degree, or when a matching degree greater than the preset matching degree threshold exists in the at least one fourth matching degree;
after identifying whether the first venous palm print image and the second venous palm print image both include a venous palm print missing region, before performing second-time venous acquisition on the palm of the user by using the venous acquisition module, and if both include a venous palm print missing region, calculating the similarity between the venous palm print missing region included in the first venous palm print image and the venous palm print missing region included in the second venous palm print image; and if the similarity between the vein palm print missing region contained in the first vein palm print image and the vein palm print missing region contained in the second vein palm print image is greater than a preset similarity threshold value, the acquisition unit executes the step of performing second vein acquisition on the palm of the user by using the vein acquisition module.
8. An electronic device comprising a vein collection module, the electronic device further comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps of the method of any of claims 1-6.
9. A computer-readable storage medium, characterized in that,
a computer program for electronic data exchange is stored, which computer program causes a computer to perform the method according to any one of claims 1 to 6.
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