CN112073641B - Image shooting method and device, mobile terminal and storage medium - Google Patents
Image shooting method and device, mobile terminal and storage medium Download PDFInfo
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- CN112073641B CN112073641B CN202010985753.8A CN202010985753A CN112073641B CN 112073641 B CN112073641 B CN 112073641B CN 202010985753 A CN202010985753 A CN 202010985753A CN 112073641 B CN112073641 B CN 112073641B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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Abstract
The embodiment of the application provides an image shooting method, an image shooting device, a mobile terminal and a storage medium, wherein the image shooting method is used for controlling a holder, and the method comprises the steps of establishing communication with the holder; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the holder to follow the target object according to the position information. According to the image shooting method provided by the embodiment, when a user switches a specific APP to other APPs, the specific APP can also track the target object in the background, and the cradle head is controlled to shoot along with the target object.
Description
Technical Field
The present application relates to the field of technologies, and in particular, to an image capturing method and apparatus, a mobile terminal, and a storage medium.
Background
Currently, tracking a target in an image capturing process needs to be realized through a specific APP. However, when a shooting target is tracked by using a specific APP, the specific APP needs to be run in the foreground, and if the user switches to another APP, the specific APP cannot track the target.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide an image capturing method, an image capturing apparatus, a mobile terminal, and a storage medium to solve the above technical problems.
The embodiment of the application is realized by adopting the following technical scheme:
in a first aspect, some embodiments of the present application provide an image capture method for controlling a pan/tilt head, the method comprising establishing communication with the pan/tilt head; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the holder to follow the target object according to the position information.
In a second aspect, some embodiments of the present application further provide an image capturing device for controlling a pan/tilt head, the device including a communication establishing module, a screen acquiring module, a position acquiring module, and a following control module; the communication establishing module is used for establishing communication with the holder; the screen acquisition module is used for acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; the position acquisition module is used for acquiring the position information of the target object according to the screen information; and the following control module is used for controlling the holder to follow the target object according to the position information.
In a third aspect, an embodiment of the present application further provides a mobile terminal, which includes a processor and a memory, where the memory stores computer program instructions, and the computer program instructions, when called by the processor, execute the image capturing method.
In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, which stores program codes, wherein the image capturing method is executed when the program codes are executed by a processor.
The image shooting method, the image shooting device, the mobile terminal and the storage medium can be used for controlling the rotation of the holder so as to shoot a target object in a following mode; the image shooting method establishes communication with the holder; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the cradle head to follow the target object according to the position information, so that when the user switches the specific APP to be other APPs, the specific APP can also track the target object at the background, and the cradle head is controlled to follow the target object to shoot.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating an image capturing method according to an embodiment of the present disclosure.
Fig. 2 is a schematic flowchart illustrating another image capturing method according to an embodiment of the present disclosure.
Fig. 3 shows a block diagram of an image capturing method according to an embodiment of the present application.
Fig. 4 shows a block diagram of modules of a mobile terminal according to an embodiment of the present application.
Fig. 5 illustrates a block diagram of a computer-readable storage medium according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Currently, tracking a target in image capturing needs to be realized by a specific APP (Application). However, when a shooting target is tracked by using a specific APP, the specific APP needs to be run in the foreground, and if the user switches to another APP, the specific APP cannot track the target. .
The inventor has long studied and proposed an image capturing method that can be used to control the rotation of a pan/tilt head to follow-up capture a target object. Specifically, the image shooting method establishes communication with the holder through the image shooting method; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the cradle head to follow the target object according to the position information, so that when the user switches the specific APP to be other APPs, the specific APP can also track the target object at the background, and the cradle head is controlled to follow the target object to shoot.
As shown in fig. 1, fig. 1 is a schematic flowchart illustrating an image capturing method 100 according to an embodiment of the present disclosure. The image capturing method 100 may be used to control the rotation of the pan/tilt head to perform follow-up capturing on a target object. Wherein, this cloud platform can fix mobile terminal, can realize mobile terminal's rotation through the rotation of self simultaneously. In some embodiments, the image capturing method 100 is also applied to a clamping device of a mobile terminal, and the clamping device at least comprises a rotating motor to realize a rotating function. In this embodiment, the image capturing method may include the following steps S110 to S140.
Step S110: and establishing communication with the holder.
In this embodiment, the mobile terminal may establish a communication connection with the cradle head through bluetooth, WiFi, or the like. The cloud platform can include a rotating motor, and after the mobile terminal is in communication connection with the cloud platform, the rotating motor of the cloud platform can be controlled, so that the cloud platform can be controlled to rotate.
Specifically, mobile terminal can include specific APP, and the user can control mobile terminal's shooting through this specific APP, can be through the rotation of this specific APP control cloud platform after communicating with cloud platform simultaneously.
Step S120: and acquiring screen information of the mobile terminal at a background of the mobile terminal.
In this embodiment, the mobile terminal may obtain screen information in the background, where the screen information at least includes the photographic image.
Specifically, the screen of the mobile terminal can be recorded through the specific APP, and when the specific APP is transferred to background operation, the screen information of the mobile terminal can be acquired at the background. Further, when the user switches the specific APP to other APPs with video shooting functions, the specific APP is transferred to a background to run, and at the moment, the camera images shot by the other APPs and displayed on the current screen can be acquired through screen recording.
In some embodiments, after the specific APP is transferred to the background for running, the screen of the mobile terminal may be recorded, so that the screen information of the mobile terminal is acquired in the background.
Step S130: and acquiring the position information of the target object according to the screen information.
In this embodiment, since the screen information may include a photographed image displayed on the current screen, the position information of the target object currently photographed may be acquired by the photographed image.
Step S140: and controlling the holder to follow the target object according to the position information.
In this embodiment, according to the position information of the target object, the target object can be followed and shot by the mobile terminal, and specifically, when the position of the target object changes, the rotation motor of the holder can be controlled to rotate, so that the mobile terminal also rotates to follow the target object, and further, the shot target object is always located in a shooting picture of the mobile terminal, and the target object is tracked and shot.
According to the image shooting method provided by the embodiment of the application, the image shooting method can be used for controlling the rotation of the holder so as to shoot the target object in a following mode. Specifically, the image shooting method generally comprises the steps that the image shooting method establishes communication with a holder; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the holder to follow the target object according to the position information. Therefore, when a specific APP for controlling the holder is in background operation, the holder can be controlled through a shooting image of any video APP, so that tracking shooting of a target object is achieved.
As shown in fig. 3, fig. 3 is a schematic flowchart illustrating another image capturing method 200 according to an embodiment of the present disclosure. The image capturing method 200 may be used to control the rotation of the pan/tilt head to perform follow-up capturing on a target object. Wherein, this cloud platform can fix mobile terminal, can realize mobile terminal's rotation through the rotation of self simultaneously. In some embodiments, the image capturing method 200 is also applied to a clamping device of a mobile terminal, and the clamping device at least comprises a rotating motor to realize a rotating function. The image capturing method 200 may specifically include the following steps S210 to S290.
Step S210: and establishing communication with the holder.
In this embodiment, the step may refer to the step S110, which is not described herein again.
Step S220: and acquiring screen information of the mobile terminal at a background of the mobile terminal.
In this embodiment, the step may refer to the step S120, which is not described herein again.
Step S230: and acquiring the face information in the camera image.
In this embodiment, the screen information displayed on the current screen can be acquired in the background of the mobile terminal, and the screen information may include a camera image currently shot by other video APPs through the mobile terminal. Further, whether the shot image has a face or not can be identified, and if the shot image has the face, all face information in the shot image can be acquired.
Step S240: and judging whether the face information has target face information of the target object.
In this embodiment, the face information may include one or more face information. Further, target face information of a target object to be photographed may be previously required, and then whether or not there is the target face information of the target object may be recognized in the one or more face information.
If the face information includes the target face information of the target object, step S250 may be executed. If the face information does not include the target face information of the target object, step a260 may be executed.
Step S250: position information of the target object is acquired.
In this embodiment, if one or more pieces of face information in the photographed image include target face information of a target object, the target object may be located by the photographed image, and position information of the target object may be acquired. In this embodiment, the position information of the target object may be, but is not limited to, coordinates of a face of the target object in the photographic image.
Step S260: person position information in a photographic image is acquired.
In this embodiment, if one or more pieces of face information in the captured image do not have target face information of a target object, the person position information in the captured image may be acquired. Specifically, during the shooting of the target object, the face of the target object may be lost, for example, when the face of the target object is blocked or the target object turns back to face the mobile terminal, the target face information of the target object may not exist in the shot image. Therefore, at this time, it is possible to perform a human type analysis on the captured image, recognize persons in the captured image, and acquire person position information of each person in the captured image. In the present embodiment, the person position information may include, but is not limited to, coordinates of the person in the captured image.
Step S270: the person position information is compared with the historical position information of the target object, and a person closest to the historical position of the target object is determined as a predetermined target object.
The historical position information of the target object is the position information of the target object which is acquired last time. Specifically, the position information of the target object acquired last time may be the position information of the target object acquired last time before the face of the target object is lost.
Further, the coordinates of each person in the captured image are compared with the coordinates of the face of the target object acquired last time, and the person closest to the face of the target object acquired last time, that is, the person closest to the history position of the target object is determined and determined as the predetermined target object.
Step S280: the predetermined target object is taken as a target object.
In this embodiment, since the person determined as the predetermined target object is closest to the historical position of the target object, the person can be regarded as the target object, that is, the predetermined target object is regarded as the target object.
Further, after the predetermined target object is taken as the target object, the position information of the predetermined target object may be acquired and taken as the position information of the target object; i.e., continues to step S250.
It should be noted that, when the face of the target object reappears in the captured image, the predetermined target object may not be regarded as the target object, but the position information of the face of the target object may be obtained by returning.
Therefore, when the faces of the target objects in the shot images are lost, the positions of the target objects are identified in an auxiliary mode through analyzing the positions of the people in the shot images, continuous follow-up shooting of the target people can be guaranteed, and stability of follow-up shooting of the target objects is improved.
Step S290: and acquiring the moving track of the target object according to the position information.
In this embodiment, when the position information of the target object is changed, the movement locus of the target object, which can be drawn according to the position information of the target object,
Step S300: and controlling the holder to follow the target object according to the moving track.
In this embodiment, the rotation motor of the pan/tilt head can be controlled to rotate according to the movement track of the target object, so that the mobile terminal rotates along with the rotation of the pan/tilt head, and the mobile terminal continuously tracks and shoots the target object.
Furthermore, the pan-tilt is controlled to follow the target object through the moving track of the target object, the face of the target person does not need to be recognized for each frame of camera image in the video stream, system resources are reduced, time for comparing the face is shortened, system response speed is increased, and accordingly delay for following the target object is reduced.
In some embodiments, the image shooting method may further include generating a floating window in a current window when screen information of the mobile terminal is acquired in a background of the mobile terminal.
Specifically, the floating window may be a running window of a specific APP, which may be displayed on a current window of the mobile terminal, and the user may be able to re-open the specific APP by clicking the floating window.
In this embodiment, when a specific APP runs in the background, the mobile terminal may limit system resources of the specific APP in the background, such as a CPU (central Processing Unit) operation time or a GPU (Graphics Processing Unit) operation time. In this embodiment, when the specific APP is switched to the background operation, the floating window is generated in the current window of the mobile terminal, and then the system resources obtained by the specific APP can be improved, so that when the user starts other APPs with a video recording function and switches the specific APP to the background operation, the specific APP can perform the aforementioned recognition and analysis on the camera image, and thus the stability of the target person in the following shooting process is improved.
According to the image shooting method provided by the embodiment, the image shooting method can be used for controlling the rotation of the holder so as to carry out follow-up shooting on the target object. Specifically, the image shooting method generally comprises the steps that the image shooting method establishes communication with a holder; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the holder to follow the target object according to the position information. Therefore, when a specific APP for controlling the holder is in background operation, the holder can be controlled through a shooting image of any video APP, so that tracking shooting of a target object is achieved.
As shown in fig. 3, fig. 3 illustrates an image capturing apparatus 300 provided in an embodiment of the present application, where the image capturing apparatus 300 may be used to control rotation of a pan-tilt head to perform follow-up shooting on a target object. Wherein, this cloud platform can fix mobile terminal, can realize mobile terminal's rotation through the rotation of self simultaneously. In some embodiments, the image capturing apparatus 300 is also applied to a clamping apparatus of a mobile terminal, and the clamping apparatus at least includes a rotating motor to implement a rotating function. Specifically, the image capturing apparatus 300 includes a communication establishing module 310, a screen acquiring module 320, a position acquiring module 330, and a following control module 340. The communication establishing module 310 is configured to establish communication with the pan/tilt head; the screen obtaining module 320 is configured to obtain screen information of the mobile terminal in a background of the mobile terminal; the position obtaining module 330 is configured to obtain position information of the target object according to the screen information; the following control module 340 is configured to control the pan/tilt head to follow the target object according to the position information.
Further, the position acquisition module 330 may include a face acquisition unit 331, a determination unit 332, a position acquisition unit 333, an information acquisition unit 334, a position comparison unit 335, and a substitution unit 336. The face acquiring unit 331 is configured to acquire face information in a captured image; the judging unit 332 is configured to judge whether the face information has target face information of a target object; a position acquisition unit 333 for acquiring position information of the target object; the information acquisition unit 334 is used to acquire the person position information in the photographic image; a position comparison unit 335 for comparing the personal position information with the historical position information of the target object and determining the person closest to the historical position of the target object as a predetermined target object; the replacing unit 336 is used to take a predetermined target object as a target object.
Further, the following control module 340 may include a trajectory acquisition unit 341 and a following control unit 342. The trajectory acquisition unit 341 is configured to acquire a moving trajectory of the target object according to the position information; the following control unit 342 is configured to control the pan/tilt head to follow the target object according to the movement track.
The image shooting device that this application embodiment provided, image shooting device can be used for controlling the rotation of cloud platform to follow the shooting to the target object. Specifically, the image shooting device comprises the image shooting method and a cloud deck, wherein the image shooting method is communicated with the cloud deck; acquiring screen information of the mobile terminal at a background of the mobile terminal, wherein the screen information at least comprises photographic images; acquiring position information of a target object according to the screen information; and controlling the holder to follow the target object according to the position information. Therefore, when a specific APP for controlling the holder is in background operation, the holder can be controlled through a shooting image of any video APP, so that tracking shooting of a target object is achieved.
As shown in fig. 4, fig. 4 shows a block diagram of a mobile terminal 400 according to an embodiment of the present disclosure, where the intelligent control panel 400 includes a processor 410 and a memory 420, and the memory 420 stores program instructions, and the program instructions are executed by the processor 410 to implement the image capturing method.
The Memory 420 may include a Random Access Memory (RAM) 420 or a Read-Only Memory (Read-Only Memory) 420. The memory 420 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 420 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like. The storage data area can also store data (such as a phone book, audio and video data, chatting record data) created by the electronic device map in use and the like.
As shown in fig. 5, an embodiment of the present application further provides a computer-readable storage medium 500, where computer program instructions 510 are stored in the computer-readable storage medium 500, and the computer program instructions 510 can be called by a processor to execute the method described in the above embodiment.
The computer-readable storage medium may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Alternatively, the computer-readable storage medium includes a non-volatile computer-readable storage medium. The computer-readable storage medium 600 has storage space for program code for performing any of the method steps described above. The program code can be read from or written to one or more computer program products. The program code may be compressed, for example, in a suitable form.
Although the present application has been described with reference to the preferred embodiments, it is to be understood that the present application is not limited to the disclosed embodiments, but rather, the present application is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the present application.
Claims (7)
1. An image shooting method is applied to a mobile terminal and used for controlling a holder, and is characterized in that,
establishing communication with a holder;
carrying out screen recording on a background of a mobile terminal through a specific APP to obtain screen information of the mobile terminal, wherein the screen information at least comprises a photographic image obtained by a non-specific APP, and the non-specific APP is an APP with a video shooting function;
acquiring position information of a target object according to the screen information;
acquiring a moving track of the target object according to the position information; and
and controlling the holder to follow the target object according to the moving track.
2. The image capturing method as claimed in claim 1, wherein the determining the position information of the target object based on the screen information includes:
acquiring face information in the photographic image; and
judging whether the face information has target face information of the target object;
and if so, acquiring the position information of the target object.
3. The image capturing method of claim 2, wherein if the face information does not include target face information of the target object, the determining the position information of the target object according to the screen information further comprises:
acquiring the position information of the person in the photographic image;
comparing the person position information with historical position information of the target object, and determining a person closest to the historical position of the target object as a preset target object, wherein the historical position information of the target object is the position information of the target object acquired last time; and
and taking the preset target object as the target object, and acquiring the position information of the target object.
4. The image capturing method according to any one of claims 1 to 3, further comprising:
and when the screen information of the mobile terminal is acquired at the background of the mobile terminal, generating a floating window at the current window.
5. The utility model provides an image shooting device, is applied to mobile terminal, and is used for controlling the cloud platform, its characterized in that includes:
the communication establishing module is used for establishing communication with the holder;
the screen acquisition module is used for carrying out screen recording on a background of the mobile terminal through a specific APP to acquire screen information of the mobile terminal, wherein the screen information at least comprises a photographic image obtained by a non-specific APP, and the non-specific APP is an APP with a video shooting function;
the position acquisition module is used for acquiring the position information of the target object according to the screen information;
a track obtaining unit, configured to obtain a moving track of the target object according to the position information; and
and the following control unit is used for controlling the holder to follow the target object according to the moving track.
6. A mobile terminal comprising a processor and a memory, wherein the memory stores computer program instructions, and the computer program instructions, when invoked by the processor, perform the image capture method of any of claims 1 to 4.
7. A computer-readable storage medium storing a program code, wherein the program code is executed by a processor to perform the image capturing method according to any one of claims 1 to 4.
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| CN112748627B (en) * | 2020-12-31 | 2022-05-17 | 重庆电子工程职业学院 | Accessory connecting frame for photography and video shooting |
| CN112887592A (en) * | 2021-01-13 | 2021-06-01 | 河南工业和信息化职业学院 | Balance car control method and balance car |
| CN113542583A (en) * | 2021-04-07 | 2021-10-22 | 厦门市思芯微科技有限公司 | TensorFlowLite-based mobile client intelligent following method and device |
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