CN108769514A - Camera control method, device, electronic device and storage medium - Google Patents

Abstract

The embodiments of the present application disclose a camera control method, device, electronic device and storage medium, and relate to the technical field of electronic devices. The camera control method is applied to an electronic device, and the electronic device is provided with a rotatable camera. The method comprises: when the camera is started, detecting the current use scene of the electronic device, judging whether the current use scene is a face recognition scene, and when the current use scene is a face recognition scene, controlling the camera to rotate, and during the rotation process, using the preview image to perform face recognition until the face image is successfully recognized. The camera control method, device, electronic device and storage medium provided in the embodiments of the present application automatically rotate the camera set on the electronic device to collect face images for recognition, thereby avoiding distortion of the obtained face images and causing face recognition failure.

Description

Camera control method, device, electronic device and storage medium

technical field

The present application relates to the technical field of electronic devices, and more specifically, to a method and device for controlling a camera, an electronic device and a storage medium.

Background technique

With the development of technology, electronic devices have more and more functions, and cameras have become one of the necessary functions of electronic devices. Since the electronic device has gradually become a user's portable and handy item, it is becoming more and more common to use the electronic device for image collection. However, the range of image acquisition by the existing electronic devices is fixed, requiring the user to turn the mobile phone, and the operation is cumbersome.

Contents of the invention

In view of the above problems, the present application proposes a camera control method, device, electronic device and storage medium, through which the camera installed on the electronic device automatically rotates to collect face images for recognition, so as to avoid distortion of the obtained face images and cause human Face recognition failed.

In the first aspect, an embodiment of the present application provides a method for controlling a camera, which is applied to an electronic device, and the electronic device is provided with a rotatable camera, and the method includes: when the camera is started, detecting the The current use scene; judge whether the current use scene is a face recognition scene; when the current use scene is the face recognition scene, control the rotation of the camera, and use the preview image to perform face recognition during the rotation process , until the face image is successfully recognized.

In the second aspect, the embodiment of the present application provides a camera control device, which is applied to an electronic device, and the electronic device is provided with a rotatable camera, and the device includes: a currently used scene detection module, configured to , detect the current use scene of the electronic device; the current use scene judging module is used to judge whether the current use scene is a face recognition scene; the rotation control module is used when the current use scene is the face recognition scene During the scene, the camera is controlled to rotate, and in the process of rotating, the preview image is used for face recognition until the face image is successfully recognized.

In a third aspect, an embodiment of the present application provides an electronic device, including a touch screen, a memory, and a processor, the touch screen and the memory are coupled to the processor, the memory stores instructions, and when the instructions are executed by the When the processor executes, the processor executes the above method.

In a fourth aspect, the embodiment of the present application provides a computer-readable storage medium having a program code executable by a processor, and the program code causes the processor to execute the above method.

In the fifth aspect, the embodiment of the present application provides an electronic device, including: a rotatable camera, the camera is used to obtain a preview image; a circuit, connected to the camera, the circuit includes a detection circuit, a driving circuit and a processing circuit circuit, the detection circuit is used to detect whether the current use scene of the electronic device is a face recognition scene; the drive circuit is used to control the rotation of the camera according to the face recognition scene; the processing circuit is used to During the rotation process, use the preview image for face recognition until the face image is successfully recognized.

A camera control method, device, electronic device, and storage medium provided in the embodiments of the present application are applied to an electronic device, and the electronic device is provided with a rotatable camera. When the camera is started, it detects the current use scene of the electronic device, and judges whether the current use scene is a face recognition scene. When the current use scene is a face recognition scene, the camera is controlled to rotate. Recognition, until the face image is successfully recognized, the camera installed on the electronic device is automatically rotated to collect the face image for recognition, so as to avoid distortion of the obtained face image and cause face recognition failure.

These or other aspects of the present application will be more concise and understandable in the description of the following embodiments.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 shows a schematic structural diagram of a first electronic device provided by an embodiment of the present application;

FIG. 2 shows a schematic structural diagram of a second electronic device provided by an embodiment of the present application;

FIG. 3 shows a schematic structural diagram of a third electronic device provided by an embodiment of the present application;

FIG. 4 shows a schematic flowchart of a camera control method provided in the first embodiment of the present application;

FIG. 5 shows a schematic flowchart of a camera control method provided in a second embodiment of the present application;

FIG. 6 shows a schematic flowchart of step S260 of the camera control method provided in the second embodiment of the present application;

FIG. 7 shows a schematic flowchart of step S262 of the camera control method provided in the second embodiment of the present application;

FIG. 8 shows a block diagram of a camera control device provided in the third embodiment of the present application;

Fig. 9 shows another module block diagram of the camera control device provided by the third embodiment of the present application;

FIG. 10 shows a block diagram of an electronic device provided by an embodiment of the present application;

FIG. 11 shows a schematic front view of an electronic device provided by an embodiment of the present application;

Fig. 12 shows a block diagram of an electronic device for executing a method for controlling a camera according to an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

Display screens are usually used in electronic devices such as mobile phones, tablet computers, and wearable electronic devices to display content such as text, pictures, icons, or videos. As users have higher and higher requirements on the clarity and fineness of displayed content, more and more electronic devices adopt larger touch screens to achieve a full-screen display effect. However, in the process of setting up a larger display screen, it is found that functional devices such as a front camera, a proximity light sensor, a projection component, and an earpiece installed on the front of the electronic device will affect the area that the touch screen can expand to.

Generally, an electronic device includes a front panel, a rear cover and a frame. The front panel includes an upper forehead area, a middle screen area and a lower key area. Usually, the upper forehead area is equipped with functional devices such as earpiece sound outlet and front camera, the middle screen area is equipped with a touch display screen, and the lower key area is equipped with one to three physical keys. With the development of technology, the lower key area is gradually canceled, and the physical keys originally arranged in the lower key area are replaced by virtual keys in the touch screen.

However, functional devices such as earpiece sound holes and front-facing cameras set in the upper forehead area are more important for the functional support of mobile phones, and cannot be easily canceled. Therefore, expanding the display area of the touch screen to cover the upper forehead area has a greater impact. difficulty. After a series of research, the inventor found that functional devices such as projection components, receivers, cameras, and structured light components can be hidden inside the terminal body of the electronic device or on the back of the terminal body, and then the sliding component and/or rotating component can be configured from The top of the terminal body is exposed, so that the original upper forehead area can be expanded into the displayable area of the touch screen, so as to increase the area of the displayable area, thereby achieving the effect of a full screen.

For example, please refer to FIG. 1 . FIG. 1 shows a first structural schematic view of an electronic device 100 that can be used in the embodiment of the present application. The electronic device includes a terminal body 130, a camera 150, and a rotating assembly 140. The camera 150 is mounted on the rotating assembly 140. In addition, other functional devices of the electronic device may also be arranged on the rotating assembly 140. Among them, other functional devices may include proximity light Sensors, earpieces, distance sensors, ambient light sensors, temperature sensors, pressure sensors and other devices.

The rotating assembly 140 is rotatably connected with the terminal body 130 , and in some implementations, the camera 150 can be rotated horizontally and vertically driven by the rotating assembly 140 . In the embodiment of the present application, the electronic device is provided with a driving component, which may be a motor, capable of driving the rotating component 140 to rotate. Then the rotation direction of the rotation assembly 140 may be two-dimensional or three-dimensional.

Wherein, the two-dimensional rotation may be the rotation in the horizontal direction. As shown in FIG. 1 , the driving assembly drives the rotating assembly 140 to rotate in the horizontal direction, wherein the horizontal direction is the rotation of the rotating assembly 140 when the electronic device is placed vertically. The plane is parallel to the top side of the electronic device. Specifically, the rotating assembly 140 may include a rotating shaft and a mounting part. One end of the rotating shaft is installed on the top of the electronic device, and the other end is connected to the mounting part. The above-mentioned functional devices are installed on the mounting part. , the rotating shaft can drive the mounting part to rotate horizontally. As an embodiment, the rotating assembly 140 can move up and down, that is, along the direction away from the top of the electronic device and close to the top of the electronic device, so that the rotating assembly can be accommodated inside or on the back of the electronic device body, for example, the rotating assembly can slide The terminal body 130 is disposed inside the terminal body 130, and the top of the terminal body 130 is open, and the rotating assembly 140 can protrude from the top opening. Or, the rotating assembly 140 can be accommodated in the back of the terminal body 130, for example, a groove is provided on the top of the back of the terminal body 130, then the rotating assembly 140 is arranged in the groove, and can protrude or retract.

In addition, the two-dimensional rotation can also be the rotation in the vertical direction. As shown in FIG. 2 , the driving assembly drives the rotating assembly 140 to rotate in the vertical direction. The rotation plane of the assembly 140 is perpendicular to the top side of the terminal body 130. Specifically, the rotation assembly 140 may include a bracket and a mounting piece, the bracket is mounted on the top of the terminal body 130, and the mounting piece is rotatably connected to the bracket, as shown in FIG. 2 As shown, there are two brackets, both of which are installed on the top of the terminal body 130, and the mounting part is rotatably installed on the two brackets, specifically, it can be installed on the two brackets through a rotating shaft, and the function of the rotating shaft Next, the mount can be rotated in the vertical direction. In addition, the rotating assembly shown in FIG. 2 can also be accommodated inside or on the back of the terminal body 130 , and the specific structure can be referred to above, and will not be repeated here.

Moreover, the rotation in the three-dimensional direction may include the rotation in the horizontal direction and the vertical direction. As shown in FIG. 3 , the drive assembly drives the rotation assembly 140 to rotate in the vertical direction and the horizontal direction. 140 may include a bracket and a mounting piece, the bracket is installed on the top of the terminal body 130, and the mounting piece is connected to the bracket in rotation, and the bracket can also rotate, and the rotation direction is the horizontal direction, thereby realizing the three-dimensional direction of the rotation assembly on the rotation.

Therefore, in view of the fixed range of image acquisition by the current electronic device, the user needs to turn the mobile phone, and the problem of cumbersome operation, the inventor proposes the camera control method, device, electronic device and storage medium provided by the embodiment of the present application. The camera on the camera automatically rotates to collect face images for recognition, so as to avoid distortion of the obtained face images and cause face recognition failures.

first embodiment

Please refer to FIG. 4 . FIG. 4 shows a schematic flowchart of a camera control method provided in the first embodiment of the present application. The camera control method is used to automatically rotate the camera installed on the electronic device to collect face images for recognition, so as to avoid distortion of the obtained face images and cause face recognition failure. In a specific embodiment, the camera control method is applied to the camera control device 200 shown in FIG. 8 and the electronic device 100 ( FIG. 11 ) configured with the camera control device 200 . The electronic device will be used as an example below, The specific process of this embodiment is described. Of course, it can be understood that the electronic device applied in this embodiment may be a smart phone, a tablet computer, a wearable electronic device, etc., and no specific limitation is made here. The process shown in FIG. 4 will be described in detail below, and the camera control method may specifically include the following steps:

Step S110: When the camera is started, detect the current use scene of the electronic device.

In this embodiment, if the face is used for payment verification during payment, the camera needs to collect the face image. Therefore, the camera needs to be exposed from the terminal body, wherein the camera can be pulled out from the terminal body by external force , may also be exposed from the terminal body driven by the electric control device in the terminal body, which is not limited here. As a method, the electronic device detects the state of the camera, and when it detects that the camera is exposed from the terminal body or the start control of the camera is triggered, it indicates that the camera is started, and the electronic device responds to the The current scene is used for detection.

Wherein, the current use scene of the electronic device may at least include a face recognition scene and a normal shooting scene. As a first method, the current use scene may be obtained by obtaining an application program that invokes the camera. Specifically, when the camera is detected to be activated When the application program calling the camera is obtained, for example, if the application program calling the camera is a shooting application program such as a camera or video camera, it indicates that the current usage scene is a normal shooting scene. If the application program calling the camera When it is a payment application program such as Alipay or Taobao or an unlocking application program, the current use scene is characterized as a face recognition scene. Further, the current use scene of the electronic device can be obtained based on the application program. As an implementable method, the electronic The device presets and stores a mapping table of the mapping relationship between each application program and the current usage scenario. After the application program is obtained, the current usage scenario corresponding to the application program can be obtained by looking up the mapping table.

As a second method, it is possible to identify the current display page when the camera is turned on, and determine whether the current usage scene is a normal shooting scene or a face recognition scene according to the recognition result. For example, if the current display page displays a shooting picture, it represents the The current usage scene is a common shooting scene. If the currently displayed page displays a shopping screen or a product screen, it indicates that the current usage scenario is a face recognition scene. Of course, this embodiment may also include other judgment methods, which are not exhaustive here.

Step S120: Determine whether the current use scene is a face recognition scene.

Step S130: When the current use scene is the face recognition scene, control the camera to rotate, and use the preview image to perform face recognition during the rotation process until the face image is successfully recognized.

Further, when it is judged that the current use scene is a face recognition scene, the electronic device controls the rotation of the camera as a response. Since the position and angle of the camera relative to the electronic device change during the rotation process, the captured image will be changed accordingly. changes, the preview image displayed on the display screen of the electronic device also changes correspondingly. Further, in this embodiment, the electronic device uses the preview image to perform face recognition until the face image is successfully recognized. Specifically, the electronic device performs feature extraction on the preview image, acquires the face image in the preview image, and extracts the face image of the person. The face image is matched with the pre-stored face image to determine whether the face image is successfully matched with the pre-stored face image. When the face image is successfully matched with the pre-stored face image, it indicates that the face image has been successfully recognized.

In the camera control method provided in the first embodiment of the present application, when the camera is started, the current use scene of the electronic device is detected, and whether the current use scene is a face recognition scene is judged, and when the current use scene is a face recognition scene, the camera is controlled to rotate, In the process of turning, use the preview image to carry out face recognition until the face image is successfully recognized, so as to automatically rotate and collect the face image through the camera installed on the electronic device for recognition, so as to avoid distortion of the obtained face image and cause human Face recognition failed.

second embodiment

Please refer to FIG. 5 , which shows a schematic flowchart of a camera control method provided in a second embodiment of the present application. The process shown in Figure 5 will be described in detail below, and the method may specifically include the following steps:

Step S210: when the camera is started, obtain an application program that invokes the camera.

Step S220: Obtain the current usage scenario of the electronic device based on the application program.

Step S230: Determine whether the current use scene is a face recognition scene.

Step S240: when the current usage scene is a face recognition scene, acquire a current preview image.

Step S250: Obtain the face image in the current preview image, and identify the face image.

Wherein, for the implementation method of step S210-step S250, please refer to step S110-step S130, which will not be repeated here.

Step S260: When the face image recognition is unsuccessful, control the camera to rotate, and use the preview image to perform face recognition during the rotation process until the face image is recognized successfully.

It can be understood that when the face image recognition is unsuccessful, the complete face information representing the target user that cannot be acquired at the position set by the camera is controlled to rotate the camera, wherein, in this embodiment, the camera's The rotation range is 360°. Further, during the rotation of the camera, the face recognition is performed using the preview image until the face image is successfully recognized.

Please refer to FIG. 6 , which shows a schematic flowchart of step S260 of the camera control method provided in the second embodiment of the present application. The process shown in Figure 6 will be described in detail below, and the method may specifically include the following steps:

Step S261: When the recognition of the human face image is unsuccessful, determine whether the human face image is a complete human face image.

Further, the situation causing face recognition failure includes at least incomplete face image collection and the user corresponding to the face image is not a real user, wherein, if the face recognition fails caused by the user corresponding to the face image is not a real user, Then display the prompt message of recognition failure and continue to control the rotation of the camera to reacquire the face image. If the face recognition fails due to the incomplete collection of the face image, then obtain the complete face recognition image before recognition. In this embodiment, when the recognition of the human face image is unsuccessful, it is judged whether the human face image is a complete human face image, wherein the human face image can be judged by identifying whether the human face image is located at the edge position of the preview image Whether it is complete or not, feature extraction can also be performed on the face image to judge whether the face image is complete or not.

Step S262: When the face image is not a complete face image, obtain the position of the face image in the current preview image, control the rotation of the camera according to the position, and use the Face recognition is performed on the preview image until the face image is successfully recognized.

Wherein, when it is determined that the face image is not a complete face image, the electronic device acquires the position of the face image in the current preview image. The upper edge area in the current preview image can be located in the left edge area in the current preview image, or in the right edge area in the current preview image, etc., further, after determining the position of the face image in the current preview image After the position, the camera is controlled to rotate according to the position, and during the rotation, the preview image is used for face recognition until the face image of the person is successfully recognized.

Please refer to FIG. 7 , which shows a schematic flowchart of a camera control method provided in a second embodiment of the present application. The process shown in Figure 7 will be described in detail below, and the method may specifically include the following steps:

Step S2621: When the face image is not a complete face image, acquire the positional relationship between the face image and the current preview image.

Further, when the face image is not a complete face image, the electronic device acquires the positional relationship between the face image and the current preview image based on the position of the face image in the current preview image. The midpoint of the image is used as the position reference point of the current preview image, and the midpoint of the face image is used as the position reference point of the face image, and the face image is obtained through the position reference point of the face image and the position reference point of the current preview image and the positional relationship between the current preview image.

Step S2622: Calculate the rotation angle and rotation direction of the camera based on the positional relationship.

In addition, after obtaining the positional relationship between the face image and the current preview image, the relative distance and relative angle between the face image and the current preview image are obtained based on the positional relationship, and the distance between the face image and the current preview image is The relative distance and relative angle calculate the rotation angle and rotation direction of the camera. It can be understood that based on the rotation angle and rotation direction, on the one hand, the camera can be rotated to a predetermined position to obtain a complete face image; on the other hand, the camera can be The shortest distance and the shortest time to rotate to the predetermined position saves the camera rotation time and reduces the power consumption required for the camera rotation.

Step S2623: Control the rotation of the camera according to the rotation angle and the rotation direction. During the rotation, use the preview image to perform face recognition until the face image is recognized successfully.

In addition, in this embodiment, when the face image is in the left area of the current preview image, it indicates that the user corresponding to the face image is located at a position to the left relative to the electronic device, and when the electronic device does not move, The camera can be controlled to rotate towards the left relative to the electronic device, so as to obtain a preview image including a complete face image during the rotation, and perform face recognition on the preview image until the face image is successfully recognized; when the face image is in the current When previewing the right area of the image, it indicates that the user corresponding to the face image is located at a position to the right relative to the electronic device. When the electronic device does not move, the camera can be controlled to rotate towards the right of the relative electronic device, so that during the rotation process Obtain a preview image including a complete face image, and perform face recognition on the preview image until the face image is successfully recognized.

Further, since there is a maximum rotation angle of the camera in the electronic device, if the calculated rotation angle of the camera exceeds the maximum rotation angle, the rotation to a predetermined position cannot be satisfied. Therefore, in this embodiment, when the camera rotates During the process, detect the rotation angle of the camera to determine whether the camera has rotated to the maximum rotation angle. If it has rotated to the maximum rotation angle, it means that the face images acquired within the rotation angle cannot be recognized, and the face recognition failure prompt will be displayed. information, or display prompting the user to manually turn the electronic device for face recognition.

In the camera control method provided in the second embodiment of the present application, when the camera is started, the application program for calling the camera is obtained, based on the application program, the current use scene of the electronic device is obtained, and it is judged whether the current use scene is a face recognition scene. When the current use scene For the face recognition scene, get the current preview image, get the face image in the current preview image, and recognize the face image. When the face image recognition is unsuccessful, control the rotation of the camera. During the rotation, use the preview The image is subjected to face recognition until the face image is successfully recognized, and the camera installed on the electronic device is automatically rotated to collect the face image for recognition, so as to avoid distortion of the obtained face image and cause face recognition failure.

third embodiment

Please refer to FIG. 8 , which shows a module block diagram of a camera control device 200 provided in a third embodiment of the present application. The camera control device 200 is applied to an electronic device, and the electronic device is provided with a rotatable camera. The following will describe the block diagram shown in FIG. The scene judgment module 220 and the rotation control module 230, wherein:

The current use scene detection module 210 is configured to detect the current use scene of the electronic device when the camera is started. Please refer to FIG. 9, further, the current use scene detection module 210 includes:

The application acquiring sub-module 211 is configured to acquire the application calling the camera when the camera is started.

The current use scene obtaining submodule 212 is configured to obtain the current use scene of the electronic device based on the application program.

The current use scene judging module 220 is configured to judge whether the current use scene is a face recognition scene.

The rotation control module 230 is configured to control the rotation of the camera when the current use scene is the face recognition scene, and during the rotation, use the preview image to perform face recognition until the face image is successfully recognized. Further, the rotation control module 230 includes: a current preview image acquisition submodule 231, a face image recognition submodule 232 and a rotation control submodule 233, wherein:

The current preview image acquisition sub-module 231 is configured to acquire a current preview image when the current usage scene is a face recognition scene.

The face image recognition sub-module 232 is configured to acquire the face image in the current preview image, and recognize the face image.

The rotation control sub-module 233 is used to control the rotation of the camera when the recognition of the face image is unsuccessful, and during the rotation, use the preview image to perform face recognition until the face image is recognized successfully. Further, the rotation control sub-module 233 includes: a face image judgment unit, a position acquisition unit and a rotation control unit, wherein:

A human face image judging unit, configured to judge whether the human face image is a complete human face image when the recognition of the human face image is unsuccessful.

A position acquiring unit, configured to acquire the position of the human face image in the current preview image when the human face image is not a complete human face image. Further, the position acquisition unit includes: a position relationship acquisition subunit and a calculation subunit, wherein:

A positional relationship acquiring subunit, configured to acquire a positional relationship between the human face image and the current preview image when the human face image is not a complete human face image.

The calculation subunit is used to calculate the rotation angle and rotation direction of the camera based on the positional relationship.

The rotation control unit is used to control the rotation of the camera according to the position, and during the rotation, use the preview image to perform face recognition until the face image is recognized successfully. Further, the rotation control unit includes: a rotation control subunit, wherein:

The rotation control subunit is used to control the rotation of the camera according to the rotation angle and the rotation direction. During the rotation, use the preview image to perform face recognition until the face image is successfully recognized.

Further, the camera control device 200 also includes: a rotation angle acquisition module 240 and a prompt information display module 250, wherein:

The rotation angle acquisition module 240 is configured to detect whether the camera has rotated to a maximum rotation angle during the rotation of the camera.

The prompt information display module 250 is configured to display a prompt message of face recognition failure when the camera has rotated to the maximum rotation angle.

Fourth embodiment

Please refer to FIG. 10 , which shows a circuit diagram of an electronic device 300 provided in a fourth embodiment of the present application. The following will describe the circuit diagram shown in FIG. 10 , the electronic device 300 includes: a camera 310 and a circuit 320 connected to each other, wherein the circuit 320 includes a detection circuit 321, a driving circuit 322 and a processing circuit 323, wherein:

The camera 320 is used to obtain a preview image; the detection circuit 321 is used to detect whether the current usage scene of the electronic device 300 is a face recognition scene; the driving circuit 322 is used to control the The camera 310 rotates; the processing circuit 323 is configured to use the preview image to perform face recognition during the rotation process until the face image is successfully recognized.

In summary, the camera control method, device, electronic device, and storage medium provided in the embodiments of the present application are applied to an electronic device, and the electronic device is provided with a rotatable camera. When the camera is started, it detects the current use scene of the electronic device, and judges whether the current use scene is a face recognition scene. When the current use scene is a face recognition scene, the camera is controlled to rotate. Recognition, until the face image is successfully recognized, the camera installed on the electronic device is automatically rotated to collect the face image for recognition, so as to avoid distortion of the obtained face image and cause face recognition failure.

It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can. As for the device-type embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to part of the description of the method embodiments. Any of the processing methods described in the method embodiments can be implemented by corresponding processing modules in the device embodiments, and details will not be repeated in the device embodiments.

Please refer to FIG. 11 again. Based on the above-mentioned camera control method and device, an embodiment of the present application further provides an electronic device 100 .

Exemplarily, the electronic device 100 may be any one of various types of computer system devices that are mobile or portable and perform wireless communication (only one form is exemplarily shown in FIG. 11 ). Specifically, the electronic device 100 can be a mobile phone or a smart phone (for example, based on iPhone TM, a phone based on Android TM), a portable game device (for example, Nintendo DS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), a laptop Computers, PDAs, portable Internet devices, music players and data storage devices, other handheld devices and such as watches, earphones, pendants, earphones, etc., the electronic device 100 can also be other wearable devices (for example, such as electronic glasses, electronic head-mounted devices (HMD) for clothing, e-bracelets, e-necklaces, e-tattoos, electronic devices or smart watches).

Electronic apparatus 100 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders , video recorders, cameras, other media recorders, radios, medical equipment, vehicle transport equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable Multimedia players (PMP), Moving Picture Experts Group (MPEG-1 or MPEG-2) audio layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

In some cases, the electronic device 100 may perform various functions (eg, play music, display video, store pictures, and receive and send phone calls). If desired, electronic device 100 may be a portable device such as a cellular telephone, media player, other handheld device, wrist watch device, pendant device, earpiece device, or other compact portable device.

The electronic device 100 shown in FIG. 11 includes an electronic body portion 10 , and the electronic body portion 10 includes a casing 12 and a main display screen 120 disposed on the casing 12 . The housing 12 can be made of metal, such as steel or aluminum alloy. In this embodiment, the main display screen 120 generally includes a display panel 111 , and may also include a circuit for responding to a touch operation on the display panel 111 . The display panel 111 may be a liquid crystal display panel (Liquid Crystal Display, LCD), and in some embodiments, the display panel 111 is also a touch screen 109 .

Please also refer to FIG. 12. In an actual application scenario, the electronic device 100 can be used as a smart phone terminal. In this case, the electronic main body 10 usually includes one or more (only shown in the figure) a) A processor 102 , a memory 104 , an RF (Radio Frequency, radio frequency) module 106 , an audio circuit 110 , a sensor 114 , an input module 118 , and a power module 122 . Those skilled in the art can understand that the structure shown in FIG. 12 is only a schematic diagram, which does not limit the structure of the electronic main body 10 . For example, the electronic body part 10 may also include more or fewer components than those shown in FIG. 12 , or have a different configuration than that shown in FIG. 12 .

Those skilled in the art can understand that, relative to the processor 102 , all other components belong to peripherals, and the processor 102 is coupled to these peripherals through a plurality of peripheral interfaces 124 . The peripheral interface 124 can be implemented based on the following standards: Universal Asynchronous Receiver/Transmitter (UART), General Purpose Input Output (GPIO), Serial Peripheral Interface (Serial Peripheral Interface) , SPI), inter-integrated circuit (Inter-Integrated Circuit, I2C), but not limited to the above standards. In some examples, the peripheral interface 124 may only include a bus; in other examples, the peripheral interface 124 may also include other components, such as one or more controllers, for example for connecting the display panel 111 display controller or memory controller for connecting memory. In addition, these controllers can also be separated from the peripheral interface 124 and integrated in the processor 102 or corresponding peripherals.

The memory 104 can be used to store software programs and modules, and the processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104 . The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory that is remotely located relative to the processor 102 , and these remote memories may be connected to the electronic main body 10 or the main display 120 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The RF module 106 is used to receive and send electromagnetic waves, realize mutual conversion between electromagnetic waves and electrical signals, and communicate with communication networks or other devices. The RF module 106 may include various existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, Subscriber Identity Module (SIM) cards, memory, etc. . The RF module 106 can communicate with various networks such as Internet, intranet, wireless network or communicate with other devices through wireless network. The wireless network mentioned above may include a cellular telephone network, a wireless local area network or a metropolitan area network. The above-mentioned wireless network can use various communication standards, protocols and technologies, including but not limited to Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), wideband code Division multiple access technology (wideband code division multiple access, W-CDMA), code division multiple access technology (Code division access, CDMA), time division multiple access technology (time division multiple access, TDMA), wireless fidelity technology (Wireless, Fidelity, WiFi) (such as IEEE 802.10A, IEEE802.11b, IEEE802.11g and/or IEEE 802.11n), VoIP (Voice over internet protocol, Worldwide Interoperability for Microwave Access, Wi-Max), other protocols for mail, instant messaging, and short messages, and any other suitable communication protocols, even those that have not yet been developed.

The audio circuit 110 , the earpiece 101 , the sound jack 103 , and the microphone 105 jointly provide an audio interface between the user and the electronic main body 10 or the main display 120 . Specifically, the audio circuit 110 receives sound data from the processor 102 , converts the sound data into electrical signals, and transmits the electrical signals to the earpiece 101 . The earpiece 101 converts electrical signals into sound waves that can be heard by the human ear. The audio circuit 110 also receives electrical signals from the microphone 105, converts the electrical signals into sound data, and transmits the sound data to the processor 102 for further processing. Audio data may be retrieved from the memory 104 or through the RF module 106 . In addition, audio data can also be stored in the memory 104 or sent through the RF module 106 .

The sensor 114 is arranged in the electronic body part 10 or in the main display screen 120, examples of the sensor 114 include but not limited to: light sensor, operation sensor, pressure sensor, gravity acceleration sensor, and other sensors .

Specifically, the sensor 114 may include a light sensor 114F and a pressure sensor 114G. Among them, the pressure sensor 114G can detect the pressure generated by pressing on the electronic device 100 . That is, the pressure sensor 114G detects pressure generated by contact or press between the user and the electronic device, for example, pressure generated by contact or press between the user's ear and the electronic device. Therefore, the pressure sensor 114G can be used to determine whether there is contact or pressure between the user and the electronic device 100, and the magnitude of the pressure.

Please refer to FIG. 12 again. Specifically, in the embodiment shown in FIG. 12 , the light sensor 114F and the pressure sensor 114G are disposed adjacent to the display panel 111 . The light sensor 114F can turn off the display output of the processor 102 when an object is close to the main display screen 120 , for example, when the electronic main body 10 moves to the ear.

As a kind of motion sensor, the gravitational acceleration sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when it is stationary, and can be used to identify the application of the posture of the electronic device 100 (such as horizontal and vertical Screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc. In addition, the electronic main body 10 can also be equipped with other sensors such as gyroscope, barometer, hygrometer, thermometer, etc., which will not be repeated here.

In this embodiment, the input module 118 may include the touch screen 109 arranged on the main display screen 120, and the touch screen 109 may collect the user's touch operations on or near it (for example, the user uses a finger, a stylus) operation of any suitable object or accessory on the touch screen 109 or near the touch screen 109), and drive the corresponding connection device according to the preset program. Optionally, the touch screen 109 may include a touch detection device and a touch controller. Wherein, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, and The touch information is converted into touch point coordinates, and then sent to the processor 102, and can receive and execute commands sent by the processor 102. In addition, the touch detection function of the touch screen 109 can be realized by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch screen 109 , in other modified implementation manners, the input module 118 may also include other input devices, such as keys 107 . The keys 107 may include, for example, character keys for inputting characters, and control keys for triggering control functions. Examples of the control buttons include a "return to main screen" button, a power on/off button, and the like.

The main display screen 120 is used to display information input by the user, information provided to the user, and various graphical user interfaces of the electronic main body 10. These graphical user interfaces can be composed of graphics, text, icons, numbers, video and Any combination thereof may be used. In one example, the touch screen 109 may be disposed on the display panel 111 so as to form an integral body with the display panel 111 .

The power module 122 is used to provide power supply to the processor 102 and other components. Specifically, the power module 122 may include a power management system, one or more power sources (such as batteries or alternating current), a charging circuit, a power failure detection circuit, an inverter, a power status indicator light, and any other components related to the electronic body. Part 10 or the components related to the generation, management and distribution of power in the main display screen 120 .

The electronic device 100 further includes a locator 119 for determining the actual location of the electronic device 100 . In this embodiment, the locator 119 realizes the positioning of the electronic device 100 by using a positioning service. The positioning service should be understood as obtaining the position information (such as longitude and latitude coordinates) of the electronic device 100 through a specific positioning technology. ), a technology or service that marks the position of a positioned object on an electronic map.

It should be understood that the above-mentioned electronic device 100 is not limited to a smart phone terminal, but refers to a computer device that can be used on the move. Specifically, the electronic device 100 refers to a mobile computer device equipped with an intelligent operating system, and the electronic device 100 includes but is not limited to a smart phone, a smart watch, a tablet computer, and the like.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing specific logical functions or steps of the process , and the scope of preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in substantially simultaneous fashion or in reverse order depending on the functions involved, which shall It should be understood by those skilled in the art to which the embodiments of the present application belong.

The logic and/or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium, For use with instruction execution systems, devices, or devices (such as computer-based systems, systems including processors, or other systems that can fetch instructions from instruction execution systems, devices, or devices and execute instructions), or in conjunction with these instruction execution systems, devices or equipment used. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device. More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read Only Memory (ROM), Erasable and Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, as it may be possible, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or other suitable processing if necessary. The program is processed electronically and stored in computer memory.

It should be understood that each part of the present application may be realized by hardware, software, firmware or a combination thereof. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques known in the art: Discrete logic circuits, ASICs with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included. In addition, each functional unit in each embodiment of the present application may be integrated into one processing module, each unit may exist separately physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (11)

1. A camera control method, characterized in that it is applied to an electronic device, the electronic device is provided with a rotatable camera, and the method comprises: When the camera is started, detect the current use scene of the electronic device; Judging whether the current use scene is a face recognition scene; When the current use scene is the face recognition scene, the camera is controlled to rotate, and during the rotation, the face recognition is performed using the preview image until the face image is successfully recognized. 2. The method according to claim 1, wherein when the current use scene is a face recognition scene, the camera is controlled to rotate, and during the rotation, the face recognition is performed using a preview image until Successfully recognized face images, including: When the current use scene is a face recognition scene, obtain a current preview image; Acquiring the face image in the current preview image, and identifying the face image; When the face image recognition is unsuccessful, the camera is controlled to rotate, and during the rotation, the preview image is used for face recognition until the face image is successfully recognized. 3. The method according to claim 2, wherein when the face image recognition is unsuccessful, the camera is controlled to rotate, and during the rotation, the face recognition is performed using a preview image until it succeeds. Recognizing the face image includes: When the recognition of the human face image is unsuccessful, it is judged whether the human face image is a complete human face image; When the face image is not a complete face image, acquire the position of the face image in the current preview image; The rotation of the camera is controlled according to the position, and during the rotation, the face recognition is performed using the preview image until the face image is successfully recognized. 4. The method according to claim 3, wherein, when the face image is not a complete face image, the position of the face image at the preview image terminal is acquired, and the position is controlled according to the position. The camera rotates, and during the rotation process, the preview image is used for face recognition until the face image is successfully recognized, including: When the face image is not a complete face image, acquire the positional relationship between the face image and the current preview image; calculating the rotation angle and rotation direction of the camera based on the positional relationship; The rotation of the camera is controlled according to the rotation angle and the rotation direction. During the rotation, the preview image is used for face recognition until the face image is successfully recognized. 5. The method according to claim 4, characterized in that, controlling the rotation of the camera according to the rotation angle and the rotation direction, during the rotation, using the preview image to perform face recognition includes : When the face image is in the left area of the current preview image, control the camera to rotate to the left relative to the electronic device, during the rotation, use the preview image to perform face recognition until successful recognition said facial image; or When the face image is in the right area of the current preview image, control the camera to rotate to the right relative to the electronic device, during the rotation process, use the preview image to perform face recognition until successful recognition The face image. 6. The method according to claim 1, wherein when the camera is started, detecting the current usage scene of the electronic device comprises: When the camera starts, obtain an application program that calls the camera; A current usage scenario of the electronic device is acquired based on the application program. 7. The method according to claim 1, wherein the method further comprises: Detecting whether the camera has rotated to a maximum rotation angle during the rotation of the camera; When the camera has rotated to the maximum rotation angle, a prompt message of face recognition failure is displayed. 8. A camera control device, characterized in that it is applied to an electronic device, and the electronic device is provided with a rotatable camera, and the device includes: The current use scene detection module is used to detect the current use scene of the electronic device when the camera is started; The current use scene judging module is used to judge whether the current use scene is a face recognition scene; The rotation control module is used to control the rotation of the camera when the current use scene is the face recognition scene, and use the preview image to perform face recognition during the rotation process until the face image is successfully recognized. 9. An electronic device, characterized in that it includes a touch screen, a memory, and a processor, the touch screen and the memory are coupled to the processor, the memory stores instructions, and when the instructions are executed by the processor When the processor executes the method according to any one of claims 1-7. 10. A computer-readable storage medium having a program code executable by a processor, wherein the program code causes the processor to execute the method according to any one of claims 1-7. 11. An electronic device, characterized in that it comprises: A rotatable camera for obtaining preview images; A circuit, connected to the camera, the circuit includes a detection circuit, a drive circuit and a processing circuit, the detection circuit is used to detect whether the current use scene of the electronic device is a face recognition scene; The face recognition scene described above is used to control the rotation of the camera; the processing circuit is used to perform face recognition using the preview image during the rotation process until the face image is successfully recognized.