CN110728204A - Face recognition method and terminal equipment - Google Patents
Face recognition method and terminal equipment Download PDFInfo
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- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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Abstract
The embodiment of the invention provides a face recognition method and terminal equipment, relates to the technical field of communication, and aims to solve the problem that the service life of a camera is shortened due to the fact that the existing terminal equipment controls the camera to extend and retract for multiple times. The method comprises the following steps: under the condition that the telescopic camera is positioned below a screen of the terminal equipment, acquiring a first face image; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. The method can be applied to a face recognition scene of the terminal equipment.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a face recognition method and terminal equipment.
Background
With the continuous development of terminal technology, the application of terminal equipment is more and more extensive. For example, the terminal device may collect a face image through a camera to perform face recognition.
At present, a terminal device can adopt a telescopic camera to collect a face image for face recognition. For example, under the condition that a user needs to unlock the terminal device, the terminal device can control the telescopic camera to extend out of the terminal device, acquire a face image of the user by using the telescopic camera, match the acquired face image with a face image which is input in advance to perform face recognition, and control the telescopic camera to retract into the terminal device by using the terminal device after the face recognition is successful.
However, in the process of completing the above face recognition, the terminal device needs to control the camera to extend and retract when acquiring a face image for face recognition each time, and since there are many scenes (for example, unlocking a screen, online payment, etc.) for face recognition by the user through the terminal device, the terminal device needs to control the camera to extend and retract many times, thereby reducing the service life of the camera.
Disclosure of Invention
The embodiment of the invention provides a face recognition method and terminal equipment, and aims to solve the problem that the service life of a camera is shortened due to the fact that the existing terminal equipment controls the camera to extend and retract for many times.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present invention provides a face recognition method, which is applied to a terminal device, where the terminal device includes a telescopic camera, and the face recognition method includes: under the condition that the telescopic camera is positioned below a screen of the terminal equipment, acquiring a first face image; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment.
In a second aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes a retractable camera, and the terminal device includes a shooting module and a processing module. The shooting module is used for collecting a first face image under the condition that the telescopic camera is located below a screen of the terminal equipment. The processing module is used for matching the first face image with the second preset image under the condition that the first face image collected by the shooting module is not matched with the first preset image. The first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment.
In a third aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes a processor, a memory, and a computer program stored on the memory and operable on the processor, and when the computer program is executed by the processor, the steps of the face recognition method in the first aspect are implemented.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the face recognition method in the first aspect.
In the embodiment of the invention, the first face image can be collected under the condition that the telescopic camera is positioned below the screen of the terminal equipment; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. Through the scheme, the face image can be collected under the condition that the camera is not popped up, the collected face image is matched with the high-definition base image for face recognition, and the high-definition base image is abundant in details, so that the face recognition is easier to succeed, and the success rate of the face recognition can be improved. If the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; if the face recognition fails, the terminal equipment can match the face image with the non-high-definition base image to perform face recognition. Therefore, the camera can be prevented from being frequently popped out and retracted, the service life of the camera is prolonged, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
Drawings
Fig. 1 is a schematic diagram of an architecture of a possible android operating system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a face recognition method according to an embodiment of the present invention;
fig. 3 is one of schematic diagrams of a camera of a terminal device to which the face recognition method according to the embodiment of the present invention is applied;
fig. 4 is a second schematic diagram of a camera of a terminal device to which the face recognition method according to the embodiment of the present invention is applied;
fig. 5 is a second schematic diagram of a face recognition method according to an embodiment of the present invention;
fig. 6 is a third schematic diagram of a face recognition method according to an embodiment of the present invention;
fig. 7 is a fourth schematic diagram of a face recognition method according to an embodiment of the present invention;
fig. 8 is a fifth schematic view of a face recognition method according to an embodiment of the present invention;
fig. 9 is a sixth schematic view of a face recognition method according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 11 is a second schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 12 is a third schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 13 is a fourth schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 14 is a hardware schematic diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The term "and/or" herein is an association relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
The terms "first" and "second," and the like, in the description and in the claims herein are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first face image, the second face image, and the like are used to distinguish different face images, rather than describing a specific order of the face images.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of processing units means two or more processing units, or the like; plural elements means two or more elements, and the like.
The embodiment of the invention provides a face recognition method and terminal equipment, which can acquire a first face image under the condition that a telescopic camera is positioned below a screen of the terminal equipment; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. Through the scheme, the face image can be collected under the condition that the camera is not popped up, the collected face image is matched with the high-definition base image for face recognition, and the high-definition base image is abundant in details, so that the face recognition is easier to succeed, and the success rate of the face recognition can be improved. If the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; if the face recognition fails, the terminal equipment can match the face image with the non-high-definition base image to perform face recognition. Therefore, the camera can be prevented from being frequently popped out and retracted, the service life of the camera is prolonged, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
The terminal device in the embodiment of the present invention may be a terminal device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present invention are not limited in particular.
The following describes a software environment to which the face recognition method provided by the embodiment of the present invention is applied, by taking an android operating system as an example.
Fig. 1 is a schematic diagram of an architecture of a possible android operating system according to an embodiment of the present invention. In fig. 1, the architecture of the android operating system includes 4 layers, which are respectively: an application layer, an application framework layer, a system runtime layer, and a kernel layer (specifically, a Linux kernel layer).
The application program layer comprises various application programs (including system application programs and third-party application programs) in an android operating system.
The application framework layer is a framework of the application, and a developer can develop some applications based on the application framework layer under the condition of complying with the development principle of the framework of the application.
The system runtime layer includes libraries (also called system libraries) and android operating system runtime environments. The library mainly provides various resources required by the android operating system. The android operating system running environment is used for providing a software environment for the android operating system.
The kernel layer is an operating system layer of an android operating system and belongs to the bottommost layer of an android operating system software layer. The kernel layer provides kernel system services and hardware-related drivers for the android operating system based on the Linux kernel.
Taking an android operating system as an example, in the embodiment of the present invention, a developer may develop a software program for implementing the face recognition method provided in the embodiment of the present invention based on the system architecture of the android operating system shown in fig. 1, so that the face recognition method may operate based on the android operating system shown in fig. 1. Namely, the processor or the terminal device can realize the face recognition method provided by the embodiment of the invention by running the software program in the android operating system.
The terminal equipment in the embodiment of the invention can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile terminal may be a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiment of the present invention is not particularly limited.
The execution subject of the face recognition method provided by the embodiment of the present invention may be the terminal device, or may also be a functional module and/or a functional entity capable of implementing the face recognition method in the terminal device, which may be specifically determined according to actual use requirements, and the embodiment of the present invention is not limited. The following takes a terminal device as an example to exemplarily describe the face recognition method provided by the embodiment of the present invention.
The following describes an exemplary face recognition method according to an embodiment of the present invention with reference to the drawings.
The embodiment of the invention provides a face recognition method which can be applied to terminal equipment comprising a telescopic camera. As shown in fig. 2, the face recognition method may include steps 200 to 203 described below.
And 200, acquiring a first face image by the terminal equipment under the condition that the telescopic camera is positioned below a screen of the terminal equipment.
In the embodiment of the invention, the telescopic camera can be extended (or ejected) from the interior of the terminal equipment, and retracted (or rebounded) to the interior of the terminal equipment. And, in the case where the collapsible camera is outside the housing of the terminal device (at this time, the collapsible camera is in an extended state), the terminal device may capture an image (e.g., a face image) through the collapsible camera. In the case that the retractable camera is located below the screen of the terminal device (i.e., below the screen, at which time the retractable camera is in a retracted state), the terminal device may also capture an image through the retractable camera. The telescopic camera may also be referred to as an underscreen camera.
In the embodiment of the invention, if the terminal device needs to acquire the face image through the camera to perform face recognition (for example, screen unlocking or online payment is realized through a face recognition mode), the terminal device can acquire the first face image under the condition that the telescopic camera is positioned below the screen of the terminal device.
Illustratively, as shown in fig. 3, the terminal device 30 includes a telescopic camera 31, and the telescopic camera 31 is located inside the terminal device 30, i.e. below the screen of the terminal device 30, when the telescopic camera 31 is in a retracted state. In a case where the telescopic camera 31 is located below the screen of the terminal device, the terminal device 30 may capture an image (e.g., a face image) by the telescopic camera 31.
Compared with the mode of directly popping up the camera to collect the image in the prior art, the embodiment of the invention can directly collect the image under the condition of not popping up the camera, thus avoiding frequent popping up and retracting of the camera and prolonging the service life of the camera.
The first preset image is an image which is stored in advance and is acquired when the telescopic camera is located outside a shell of the terminal equipment. A face image (e.g., a first preset image) for face recognition stored in advance in the terminal device may be referred to as a base library map, a base library, a base map, or the like.
As shown in fig. 4, the collapsible camera 31 may be extended from the inside of the terminal device 30 with the collapsible camera 31 in an extended state. In a case where the telescopic camera 31 is outside the housing of the terminal device, the terminal device 30 may capture an image through the telescopic camera 31 as a first preset image (high-definition base map) and store the first preset image.
It should be noted that, when the base map for face recognition is acquired, due to factors such as low screen transmittance and wiring gaps, the quality of an image (non-high-definition base map) acquired by the camera under the screen is low, and if a low-quality face image is used as the base map for face feature matching, false recognition is easily caused. In view of this, the face recognition method provided by the embodiment of the invention can acquire the face image without popping up the camera, and match the acquired face image with the high-definition base map for face recognition.
In the embodiment of the invention, after the terminal device collects the first face image, the terminal device can match the first face image with the first preset image to perform face recognition. If the first face image is matched with the first preset image, the face recognition is successful; and if the first face image is not matched with the first preset image, the face recognition fails.
In the embodiment of the present invention, the process of matching the first face image with the first preset image by the terminal device may include the following steps: and calculating the target matching degree of the first face image and the first preset image, and comparing the target matching degree with a matching degree threshold value. Specifically, the terminal device may determine that the face recognition is successful when the target matching degree is greater than or equal to the matching degree threshold; and under the condition that the target matching degree is smaller than the threshold value of the matching degree, the terminal equipment can determine that the face recognition fails.
On one hand, if the terminal device determines that the first face image matches the first preset image, that is, the face recognition is successful, the terminal device may continue to perform step 202 described below.
On the other hand, if the terminal device determines that the first face image does not match the first preset image, that is, the face recognition fails, the terminal device may continue to perform step 203 described below.
Wherein the target operation may be any one of the following: unlocking a screen of the terminal equipment and paying through the terminal equipment. It is understood that the target operations are only exemplary and can be determined according to actual use requirements, and the embodiments of the present invention are not limited.
In the embodiment of the invention, if the face recognition is performed when the screen is unlocked, the terminal device can unlock the screen of the terminal device under the condition that the terminal device determines that the face recognition is successful. If the face recognition is performed when the payment is performed through the terminal device, the terminal device may perform the payment operation when the face recognition is determined to be successful by the terminal device.
Compared with the mode of directly popping up the camera to acquire the image and perform face recognition in the prior art, the embodiment of the invention can acquire the image and perform face recognition under the condition of not popping up the camera, and once the face recognition is successful, the camera does not need to pop up, so that the frequent popping up and retraction of the camera can be avoided, and the service life of the camera can be prolonged.
And 203, the terminal equipment matches the first face image with a second preset image.
The second preset image is an image which is stored in advance and is acquired when the telescopic camera is located below a screen of the terminal equipment.
It should be noted that, because the screen transmittance is low and there are wiring gaps, the image quality of the human face base image acquired by the under-screen camera is relatively low, and it can be understood that the image quality of the first preset image is better than that of the second preset image.
In the embodiment of the invention, the image quality can be measured by using parameters such as image definition or brightness. That is, the higher the image definition or brightness, the better the image quality.
For convenience of explanation, the first preset image may be referred to as a high definition base map, and the second preset image may be referred to as a non-high definition base map. It should be noted that high definition and non-high definition are relative terms and do not indicate the actual sharpness of the image.
In the embodiment of the invention, after the terminal device determines that the first face image is not matched with the first preset image (high-definition base map), the terminal device can match the first face image with the second preset image (non-high-definition base map) to determine whether the face recognition is successful.
In the embodiment of the invention, when the face recognition is required, the camera can directly collect the face image without popping up (namely, the camera is kept under the screen), and the face image is matched with the high-definition base image to perform the face recognition. Once the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; once the face recognition fails, the terminal device may match the face image with a non-high-definition base map to perform face recognition. Therefore, the face recognition method can avoid frequent popping and retracting of the camera, prolong the service life of the camera, effectively improve the success rate of face recognition and reduce the false recognition rate.
According to the face recognition method provided by the embodiment of the invention, the first face image can be collected under the condition that the telescopic camera is positioned below the screen of the terminal equipment; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. Through the scheme, the face image can be collected under the condition that the camera is not popped up, the collected face image is matched with the high-definition base image for face recognition, and the high-definition base image is abundant in details, so that the face recognition is easier to succeed, and the success rate of the face recognition can be improved. If the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; if the face recognition fails, the terminal equipment can match the face image with the non-high-definition base image to perform face recognition. Therefore, the camera can be prevented from being frequently popped out and retracted, the service life of the camera is prolonged, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
Optionally, with reference to fig. 2, as shown in fig. 5, after the step 203, the face recognition method provided in the embodiment of the present invention may further include the following steps 204 and 202.
And 204, under the condition that the first face image is matched with the second preset image, the terminal equipment determines that the face recognition is successful.
In the embodiment of the present invention, after the terminal device matches the first face image with the second preset image, if the matching degree of the first face image and the second preset image is greater than the matching degree threshold, the terminal device may determine that the face recognition is successful, and then the terminal device may continue to perform step 202, that is, perform a target operation, for example, unlock a screen of the terminal device or perform payment through the terminal device.
For the description of the above target operation, reference may be specifically made to the description of step 202 in fig. 2 in the foregoing method embodiment, and details are not repeated here.
Optionally, with reference to fig. 2, as shown in fig. 6, before the step 200, the face recognition method provided in the embodiment of the present invention may further include the following step 205. Accordingly, the above step 200 can be specifically realized by the following step 200 a.
And 200a, under the condition that the telescopic camera is positioned below the screen of the terminal equipment, responding to the first input by the terminal equipment, and acquiring a first face image through the telescopic camera.
Optionally, in this embodiment of the present invention, the first input may be a touch screen input of a user on a terminal device, a pressing input of the user on a physical key of the terminal device, a face projection input of the user on a camera of the terminal device, or any other input meeting an actual use requirement, which may be determined specifically according to the actual use requirement, and the embodiment of the present invention is not limited.
For example, a user may press a physical button or touch screen input of the terminal device to trigger the terminal device to unlock the screen, that is, to trigger the terminal device to perform face recognition.
For another example, the user may touch a screen on the terminal device to input, and trigger the terminal device to perform online payment, that is, trigger the terminal device to perform face recognition.
In the embodiment of the invention, under the condition that the telescopic camera is positioned below the screen of the terminal equipment, once the user triggers the terminal equipment to perform face recognition, the terminal equipment can start the telescopic camera to collect the first face image. So, in face identification scene, need not the camera and pop out, can avoid the camera to frequently pop out and retract like this, promote the life of camera.
In the embodiment of the present invention, if the first face image is not matched with the first preset image or the second preset image, the face recognition fails, and in this case, the terminal device may perform at least one of the following operations: for example, determining that the face recognition fails, prompting the user that the face recognition fails, and controlling a camera to pop up and collect a face image. A specific implementation manner in which the terminal device performs an operation after a face recognition failure is exemplarily described below through the first implementation manner, the second implementation manner, and the third implementation manner described below.
The first implementation mode comprises the following steps:
optionally, with reference to fig. 6 and as shown in fig. 7, after the step 203, the face recognition method provided in the embodiment of the present invention may further include a step 206 as described below.
And step 206, under the condition that the first face image is not matched with the second preset image, the terminal equipment determines that the face recognition fails.
In the embodiment of the invention, if the first face image is not matched with the second preset image, the face recognition fails. Therefore, the false recognition rate can be reduced, and the safety of the user information in the terminal equipment is improved.
The second implementation mode comprises the following steps:
optionally, with reference to fig. 2, as shown in fig. 8, after the step 203, the face recognition method provided in the embodiment of the present invention may further include a step 207 as described below.
And step 207, under the condition that the first face image is not matched with the second preset image, displaying first prompt information by the terminal equipment.
The first prompt information can be used for prompting whether a telescopic camera is popped up to collect a face image.
In the embodiment of the invention, if the user inputs the first prompt information and determines that the terminal device pops up the telescopic camera to collect the face image, the terminal device can control the telescopic camera to stretch out from the inside of the terminal device so as to collect the face image. Therefore, the convenience of man-machine interaction in the face recognition process is improved.
The third implementation mode comprises the following steps:
optionally, with reference to fig. 2, as shown in fig. 9, after the step 203, the face recognition method provided in the embodiment of the present invention may further include the following step 208 and step 209.
And 208, under the condition that the first face image is not matched with the second preset image, the terminal equipment controls the telescopic camera to stretch out of the terminal equipment.
And step 209, the terminal equipment acquires a second face image and matches the second face image with the first preset image.
In the embodiment of the invention, once the face image is collected by the under-screen camera to perform face recognition failure, the terminal equipment controls the telescopic camera to extend out of the terminal equipment, collects the second face image, and performs face recognition by matching the second face image with the high-definition base map. Therefore, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
It should be noted that, each of the drawings (for example, fig. 8, fig. 9, and the like) in the above-described embodiment of the present invention is illustrated in combination with the above-described fig. 2, and when the embodiment is implemented specifically, each of the drawings may also be implemented in combination with any other drawing (for example, fig. 6) that can be combined.
Optionally, with reference to fig. 2, before the step 200, the face recognition method provided in the embodiment of the present invention may further include the following steps 210 and 211.
And step 210, the terminal equipment collects at least one third face image under the condition that the telescopic camera is positioned outside the shell of the terminal equipment.
In step 211, the terminal device determines a face image of which the image quality parameter is greater than or equal to the first threshold value in the at least one third face image as a first preset image.
In an embodiment of the present invention, the image quality parameter may include at least one of: sharpness of the captured image, brightness of the captured image. It is to be understood that the image quality parameters are merely exemplary and may be determined according to actual use requirements, and the embodiments of the present invention are not limited thereto.
In this embodiment of the present invention, the first threshold may be a preset image definition, a preset image brightness, or a preset image definition and a preset image brightness. The specific value of the first threshold may be determined according to actual use requirements, and the embodiment of the present invention is not limited.
For example, assuming that the image quality parameter is the sharpness of the acquired image, the first threshold is a preset image sharpness. Assuming that the image quality parameter includes the sharpness and brightness of the captured image, the first threshold includes a preset image sharpness and image brightness, in which case the terminal may compare the sharpness of the captured image with the preset image sharpness and compare the brightness of the captured image with the preset image brightness.
In the embodiment of the invention, the terminal equipment can acquire the face image through the telescopic camera in the extending state and judge whether the image quality parameter of the face image is greater than the first threshold value. If the image quality parameter of the face image is greater than or equal to a first threshold value, namely the face image meets the image quality condition, the terminal equipment determines the face image as a first preset image; if the image quality parameter of the face image is smaller than the first threshold, the terminal equipment collects the face image again and judges whether the image quality parameter of the face image is larger than the first threshold. When the image collected within a preset number of times (for example, 5 times) passes through face image quality detection (for example, brightness, definition), the collected face image is stored in a safe area of the terminal device as a first preset image (high definition base map).
It should be noted that the above steps 210 to 211 may also be performed before the step 201.
Optionally, with reference to fig. 2, before the step 200, the face recognition method provided in the embodiment of the present invention may further include the following steps 212 and 213.
And 212, the terminal device collects at least one fourth face image under the condition that the telescopic camera is positioned below the screen of the terminal device.
In step 213, the terminal device determines, as the second preset image, a face image of which the image quality parameter is greater than or equal to the second threshold value in the at least one fourth face image.
Wherein the first threshold may be greater than the second threshold.
For the description of the image quality parameters in step 213, reference may be specifically made to the description of the image quality parameters in step 211, which is not described herein again.
For the description of the second threshold in step 213, reference may be specifically made to the description of the first threshold in step 211, and details are not described herein again.
In the embodiment of the invention, the terminal equipment can acquire the face image through the camera positioned below the screen of the terminal equipment and judge whether the image quality parameter of the face image is greater than the second threshold value. If the image quality parameter of the face image is greater than or equal to a second threshold value, namely the face image meets the image quality condition, the terminal equipment determines the face image as a second preset image; if the image quality parameter of the face image is smaller than the second threshold value, the terminal equipment collects the face image again and judges whether the image quality parameter of the face image is larger than the second threshold value or not. When the image collected within a preset number of times (for example, 5 times) passes through face image quality detection (for example, brightness, definition), the collected face image is stored in a safe area of the terminal device as a second preset image (non-high-definition base map).
It should be noted that the execution order of steps 210 to 211, 212 to 213 may not be limited in the embodiments of the present invention. That is, in the embodiment of the present invention, step 210 to step 211 may be performed first, and then step 212 to step 213 may be performed; or step 212 to step 213 may be performed first, and then step 210 to step 211 may be performed; step 210-step 211 and step 212-step 213 may also be performed simultaneously.
It should be noted that the above steps 212 to 213 may be performed before the step 203.
As shown in fig. 10, an embodiment of the present invention provides a terminal device 700, where the terminal device 700 may include a retractable camera, and the terminal device 700 includes a shooting module 701 and a processing module 702. The shooting module 701 is used for collecting a first face image under the condition that the telescopic camera is located below a screen of the terminal device. The processing module 702 is configured to match the first face image with a second preset image when the first face image acquired by the shooting module 701 is not matched with the first preset image. The first preset image is an image which is stored in advance and is acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is an image which is stored in advance and is acquired when the telescopic camera is located below a screen of the terminal equipment.
Optionally, in an embodiment of the present invention, an image quality of the first preset image is better than an image quality of the second preset image.
Optionally, in this embodiment of the present invention, the processing module 702 is further configured to, after the shooting module 701 collects the first face image, determine that the face recognition is successful and execute the target operation under a condition that the first face image is matched with the first preset image. Wherein the target operation may be any one of the following: unlocking a screen of the terminal equipment and paying through the terminal equipment.
Optionally, with reference to fig. 10, as shown in fig. 11, the terminal device provided in the embodiment of the present invention may further include a receiving module 703. The receiving module 703 is configured to receive a first input of a user before the shooting module 701 acquires the first face image, where the first input is used to trigger the terminal device to perform face recognition. The shooting module 701 is specifically configured to capture the first face image through the retractable camera in response to the first input received by the receiving module 703.
Optionally, in this embodiment of the present invention, the processing module 702 is further configured to determine that the face recognition fails when the first face image is not matched with the second preset image after the first face image is matched with the second preset image.
Optionally, with reference to fig. 10, as shown in fig. 12, the terminal device 700 provided in the embodiment of the present invention may further include a display module 704. The display module 704 is configured to display a first prompt message under the condition that the first face image is not matched with the second preset image after the processing module 702 matches the first face image with the second preset image, where the first prompt message is used to prompt whether to pop up a telescopic camera to collect a face image.
Optionally, with reference to fig. 10, as shown in fig. 13, the terminal device 700 provided in the embodiment of the present invention may further include a control module 705. The control module 705 is configured to control the retractable camera to extend out from the inside of the terminal device when the first face image does not match the second preset image after the processing module 702 matches the first face image with the second preset image. The shooting module 701 is further configured to acquire a second face image through a telescopic camera located outside a housing of the terminal device. The processing module 702 is further configured to match the second face image acquired by the shooting module 701 with the first preset image.
Optionally, in this embodiment of the present invention, the shooting module 701 is further configured to, before the first face image is acquired, acquire at least one third face image under the condition that the retractable camera is located outside the housing of the terminal device, and determine, as the first preset image, a face image in the at least one third face image whose image quality parameter is greater than or equal to a first threshold.
Optionally, in this embodiment of the present invention, the shooting module 701 is further configured to, under the condition that the retractable camera is located below the screen of the terminal device, acquire at least one fourth face image, and determine, as the second preset image, a face image in the at least one fourth face image whose image quality parameter is greater than or equal to a second threshold. Wherein the first threshold is greater than the second threshold.
The terminal device provided by the embodiment of the present invention can implement each process implemented by the terminal device in the above method embodiments, and is not described here again to avoid repetition.
According to the terminal equipment provided by the embodiment of the invention, the first face image can be collected under the condition that the telescopic camera is positioned below the screen of the terminal equipment; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. Through the scheme, the face image can be collected under the condition that the camera is not popped up, the collected face image is matched with the high-definition base image for face recognition, and the high-definition base image is abundant in details, so that the face recognition is easier to succeed, and the success rate of the face recognition can be improved. If the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; if the face recognition fails, the terminal equipment can match the face image with the non-high-definition base image to perform face recognition. Therefore, the camera can be prevented from being frequently popped out and retracted, the service life of the camera is prolonged, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
Fig. 14 is a schematic diagram of a hardware structure of a terminal device for implementing various embodiments of the present invention. As shown in fig. 14, the terminal device 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, and a power supply 811. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 14 is not intended to be limiting, and that terminal devices may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The sensor 805 is used for acquiring a first face image under the condition that the telescopic camera is located below a screen of the terminal equipment; a processor 810, configured to match the first face image with the second preset image if the first face image acquired by the sensor 805 does not match the first preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment.
The embodiment of the invention provides terminal equipment, which can acquire a first face image under the condition that a telescopic camera is positioned below a screen of the terminal equipment; under the condition that the first face image is not matched with the first preset image, matching the first face image with the second preset image; the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal equipment, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal equipment. Through the scheme, the face image can be collected under the condition that the camera is not popped up, the collected face image is matched with the high-definition base image for face recognition, and the high-definition base image is abundant in details, so that the face recognition is easier to succeed, and the success rate of the face recognition can be improved. If the face recognition is successful, the terminal equipment executes operations such as screen unlocking and the like; if the face recognition fails, the terminal equipment can match the face image with the non-high-definition base image to perform face recognition. Therefore, the camera can be prevented from being frequently popped out and retracted, the service life of the camera is prolonged, the success rate of face recognition can be effectively improved, and the false recognition rate is reduced.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 801 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 810; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 801 can also communicate with a network and other devices through a wireless communication system.
The terminal device 800 provides the user with wireless broadband internet access through the network module 802, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 803 may convert audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output related to a specific function performed by the terminal apparatus 800 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.
The input unit 804 is used for receiving an audio or video signal. The input unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the graphics processor 8041 processes image data of a still picture or video obtained by an image capturing apparatus (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted via the radio frequency unit 801 or the network module 802. The microphone 8042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 801 in case of a phone call mode.
The terminal device 800 also includes at least one sensor 805, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 8061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 8061 and/or the backlight when the terminal device 800 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 805 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 806 is used to display information input by the user or information provided to the user. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.
The user input unit 807 is operable to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 8071 (e.g., operations by a user on or near the touch panel 8071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 8071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 810, receives a command from the processor 810, and executes the command. In addition, the touch panel 8071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
Further, the touch panel 8071 can be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation on or near the touch panel 8071, the touch operation is transmitted to the processor 810 to determine the type of the touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of the touch event. Although in fig. 14, the touch panel 8071 and the display panel 8061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the terminal device, and this is not limited herein.
The interface unit 808 is an interface for connecting an external device to the terminal apparatus 800. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 800 or may be used to transmit data between the terminal apparatus 800 and an external device.
The memory 809 may be used to store software programs as well as various data. The memory 809 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 809 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 810 is a control center of the terminal device, connects various parts of the whole terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby performing overall monitoring of the terminal device. Processor 810 may include one or more processing units; optionally, the processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.
In addition, the terminal device 800 includes some functional modules that are not shown, and are not described in detail here.
Optionally, an embodiment of the present invention further provides a terminal device, which includes the processor 810 shown in fig. 14, a memory 809, and a computer program stored in the memory 809 and capable of running on the processor 810, where the computer program, when executed by the processor 810, implements each process of the above-mentioned embodiment of the face recognition method, and can achieve the same technical effect, and is not described herein again to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned embodiment of the face recognition method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may include a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method disclosed in the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (14)
1. A face recognition method is applied to terminal equipment comprising a telescopic camera, and is characterized by comprising the following steps:
acquiring a first face image under the condition that the telescopic camera is positioned below a screen of the terminal equipment;
under the condition that the first face image is not matched with a first preset image, matching the first face image with a second preset image;
the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal device, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal device.
2. The method according to claim 1, wherein the image quality of the first predetermined image is better than the image quality of the second predetermined image.
3. The method of claim 1, wherein after said acquiring the first face image, the method further comprises:
under the condition that the first face image is matched with a first preset image, determining that face recognition is successful, and executing target operation;
wherein the target operation is any one of: and unlocking the screen of the terminal equipment and paying through the terminal equipment.
4. A method according to any one of claims 1 to 3, wherein prior to acquiring the first face image, the method further comprises:
receiving a first input of a user, wherein the first input is used for triggering the terminal equipment to perform face recognition;
the acquiring of the first face image includes:
in response to the first input, capturing a first face image with the telescoping camera.
5. The method of claim 4, wherein after matching the first face image with a second preset image, the method further comprises:
determining that face recognition fails under the condition that the first face image is not matched with the second preset image;
alternatively, the first and second electrodes may be,
under the condition that the first face image is not matched with the second preset image, displaying first prompt information, wherein the first prompt information is used for prompting whether the telescopic camera is popped up to collect the face image or not;
alternatively, the first and second electrodes may be,
under the condition that the first face image is not matched with the second preset image, the telescopic camera is controlled to stretch out of the terminal equipment, the second face image is collected, and the second face image is matched with the first preset image.
6. The method of claim 1 or 2, wherein prior to acquiring the first face image, the method further comprises:
under the condition that the telescopic camera is positioned outside a shell of the terminal equipment, acquiring at least one third face image, and determining the face image of which the image quality parameter is greater than or equal to a first threshold value in the at least one third face image as the first preset image;
under the condition that the telescopic camera is positioned below a screen of the terminal equipment, acquiring at least one fourth face image, and determining a face image of which the image quality parameter is greater than or equal to a second threshold value in the at least one fourth face image as a second preset image;
wherein the first threshold is greater than the second threshold.
7. The terminal equipment is characterized by comprising a telescopic camera, wherein the terminal equipment comprises a shooting module and a processing module;
the shooting module is used for collecting a first face image under the condition that the telescopic camera is positioned below the screen of the terminal equipment;
the processing module is used for matching the first face image with a second preset image under the condition that the first face image acquired by the shooting module is not matched with the first preset image;
the first preset image and the second preset image are face images stored in advance, the first preset image is a face image acquired when the telescopic camera is located outside a shell of the terminal device, and the second preset image is a face image acquired when the telescopic camera is located below a screen of the terminal device.
8. The terminal device according to claim 7, wherein the image quality of the first preset image is better than the image quality of the second preset image.
9. The terminal device according to claim 7, wherein the processing module is further configured to determine that face recognition is successful and execute a target operation when the first face image matches a first preset image after the first face image is captured by the capturing module;
wherein the target operation is any one of: and unlocking the screen of the terminal equipment and paying through the terminal equipment.
10. The terminal device according to any one of claims 7 to 9, wherein the terminal device further comprises a receiving module;
the receiving module is used for receiving a first input of a user before the shooting module collects a first face image, wherein the first input is used for triggering the terminal equipment to perform face recognition;
the shooting module is specifically configured to capture a first face image through the retractable camera in response to the first input received by the receiving module.
11. The terminal device according to claim 10, wherein the processing module is further configured to determine that face recognition fails if the first face image does not match the second preset image after matching the first face image with the second preset image;
or the terminal device further comprises a display module, wherein the display module is used for displaying first prompt information under the condition that the first face image is not matched with the second preset image after the processing module matches the first face image with the second preset image, and the first prompt information is used for prompting whether the telescopic camera is popped up to acquire the face image;
or the terminal device further comprises a control module, wherein the control module is used for controlling the telescopic camera to extend out of the terminal device under the condition that the first face image is not matched with the second preset image after the processing module matches the first face image with the second preset image; the shooting module is further used for acquiring a second face image through the telescopic camera positioned outside the shell of the terminal equipment; the processing module is further configured to match the second face image acquired by the shooting module with the first preset image.
12. The terminal device according to claim 7 or 8, wherein the photographing module is further configured to, before acquiring the first face image, acquire at least one third face image with the retractable camera outside a housing of the terminal device, and determine, as the first preset image, a face image of which an image quality parameter is greater than or equal to a first threshold value in the at least one third face image;
the shooting module is further configured to acquire at least one fourth face image under the condition that the telescopic camera is located below the screen of the terminal device, and determine, as the second preset image, a face image of which the image quality parameter is greater than or equal to a second threshold value in the at least one fourth face image;
wherein the first threshold is greater than the second threshold.
13. A terminal device, characterized in that the terminal device comprises a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the face recognition method according to any one of claims 1 to 6.
14. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the face recognition method according to any one of claims 1 to 6.
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| 陈秀宏 等: "基于分块离散余弦变换和Hausdorff距离的人脸识别", 《计算机应用》, vol. 30, no. 2, pages 86 - 89 * |
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| CN110728204B (en) | 2024-01-02 |
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