CN111163278B - Camera control method and device - Google Patents
Camera control method and device Download PDFInfo
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- CN111163278B CN111163278B CN201911405826.5A CN201911405826A CN111163278B CN 111163278 B CN111163278 B CN 111163278B CN 201911405826 A CN201911405826 A CN 201911405826A CN 111163278 B CN111163278 B CN 111163278B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
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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
- H04N23/62—Control of parameters via user interfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention provides a control method and device of a camera. The control method of the camera comprises the following steps: detecting whether a target device file exists in real time or at regular time in the video communication process; under the condition that the target equipment file is detected, judging whether the camera is in a starting state or not; and under the condition that the camera is not in a starting state, controlling the camera to start and collecting images. According to the technical scheme provided by the embodiment of the invention, in the video communication process, whether the equipment file corresponding to the USB camera exists is detected in real time or at regular time, and when the equipment file corresponding to the USB camera is detected, if the USB camera is not detected to be in the starting state, the USB camera is controlled to be started, and a video image is collected. Therefore, even if the camera is unplugged and then plugged in the video communication process, the camera can automatically acquire images again, and the influence of the plugging operation of the camera on the use of the video communication service is reduced.
Description
Technical Field
The present invention relates to the field of camera technologies, and in particular, to a camera control method and a camera control device.
Background
With the development of video communication technology, various video communication services are increasingly appearing in life, study and work of people, such as video conference, video telephone, remote video education, remote video medical treatment, interactive television, remote video shopping, network video game and the like. The video communication service enables communication between people to be more direct and convenient.
For video communication services, it is usually necessary to capture video images through a camera. And the use of USB cameras is becoming more and more popular. The USB camera is plug-and-play, operates foolproof, does not need a collection card, does not need a power supply, does not need to dismantle a case, and supports a notebook computer. Compared with the traditional monitoring camera, the monitoring camera has lower cost, can be watched through a remote network, and is convenient, practical and simple to operate.
In the prior art, when a USB camera is used, the problems that: in the video communication process, the USB camera may be unplugged from the electronic device due to misoperation or the like, and at this time, the USB camera is plugged into the electronic device again, and the USB camera does not continue to acquire video images, which may affect the use of the video communication service by the user.
Disclosure of Invention
Embodiments of the present invention have been made in view of the above problems, so as to provide a control method of a camera and a control apparatus of a camera that overcome or at least partially solve the above problems.
In order to solve the above problems, the embodiment of the present invention discloses a control method for a camera, which is applied to an electronic device, wherein the camera is a USB camera;
the control method of the camera comprises the following steps:
detecting whether a target device file exists in real time or at regular time in the video communication process; the target equipment file is an equipment file corresponding to the camera;
under the condition that the target equipment file is detected, judging whether the camera is in a starting state or not;
and under the condition that the camera is not in a starting state, controlling the camera to start and collecting images.
In order to solve the above problems, the embodiment of the present invention discloses a control device for a camera, which is applied to an electronic device, wherein the camera is a USB camera;
the control device of the camera comprises:
the detection module is used for detecting whether a target device file exists in real time or at regular time in the video communication process; the target equipment file is an equipment file corresponding to the camera;
the judging module is used for judging whether the camera is in a starting state or not under the condition that the detecting module detects that the target equipment file exists;
and the first starting control module is used for controlling the camera to start and collecting images under the condition that the judging module determines that the camera is not in a starting state.
In order to solve the above problem, an embodiment of the present invention discloses an electronic device, including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform the method of controlling a camera as described above.
In order to solve the above problem, an embodiment of the present invention discloses a computer-readable storage medium storing a computer program that causes a processor to execute the control method of a camera as described above.
The embodiment of the invention has the following advantages:
according to the technical scheme provided by the embodiment of the invention, in the video communication process, whether the equipment file corresponding to the USB camera exists is detected in real time or at regular time, and when the equipment file corresponding to the USB camera is detected, if the USB camera is not detected to be in the starting state, the USB camera is controlled to be started, and a video image is collected. Therefore, even if the camera is unplugged and plugged in the video communication process, the camera can automatically acquire images again, so that the influence of the plugging operation of the camera on the use of the video communication service is reduced.
Drawings
Fig. 1 is a schematic flowchart of a control method for a camera according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an example I provided by an embodiment of the present invention;
FIG. 3 is a flow chart diagram of example two provided by an embodiment of the present invention;
fig. 4 is a block diagram of a control device of a camera according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
According to the technical scheme provided by the embodiment of the invention, in the video communication process, whether the equipment file corresponding to the USB camera exists is detected in real time or at regular time, and when the equipment file corresponding to the USB camera is detected, if the USB camera is not detected to be in the starting state, the USB camera is controlled to be started, and a video image is collected. Therefore, even if the camera is unplugged and then plugged in the video communication process, the camera can automatically acquire images again, and the influence of the plugging operation of the camera on the use of the video communication service is reduced.
According to an aspect of an embodiment of the present invention, there is provided a control method for a camera, applied to an electronic device, where the electronic device includes, but is not limited to: and the video network terminal, the notebook computer, the desktop computer, the vehicle-mounted terminal and other devices with USB interfaces. The camera in the embodiment of the invention is a USB camera.
As shown in fig. 1, the control method of the camera includes:
step 101: and detecting whether the target equipment file exists in real time or in a timing manner in the video communication process.
In the embodiment of the invention, in the video communication process (namely, in the video communication service process), the electronic equipment detects whether the target equipment file corresponding to the USB camera exists or not in real time or at regular time so as to judge whether the USB camera is accessed or not.
The target device file in this step is a device file corresponding to the camera. For example, the target device file may be: and when the electronic equipment detects that the USB camera is accessed, generating an equipment file corresponding to the USB camera.
The video communication described in this step includes but is not limited to: video conferencing, video telephony, remote video education, remote video medicine, interactive television, remote video shopping, and network video games, among others.
Step 102: and under the condition that the target equipment file is detected, judging whether the camera is in a starting state or not.
When the target device file corresponding to the USB camera is detected, the USB camera is connected to the electronic device. At this time, whether the USB camera is in a start state (i.e., a working state) is determined, so as to determine whether the USB camera is acquiring an image.
Step 103: and under the condition that the camera is not in a starting state, controlling the camera to start and collecting images.
In the embodiment of the invention, in the video communication process, if the electronic equipment detects that the USB camera is accessed but is not in the starting state, the USB camera is controlled to be started, so that the USB camera automatically acquires images to meet the requirement of video communication.
Optionally, in an embodiment of the present invention, a Linux system is installed in the electronic device, and the target device file may be: and under a Linux system, generating a device file corresponding to the USB camera.
In the Linux system, hardware devices are all in the form of files, and thus different hardware devices correspond to different device files (also referred to as device nodes). The device files are created under the "/dev" directory, which is the hub connecting the Linux kernel with the user plane, i.e. the device files provide an interface between the external device and the operating system.
In the Linux system, when an external hardware device is accessed to the electronic device, a device file corresponding to the external hardware device is generated. And when the external hardware equipment is disconnected with the electronic equipment, deleting the equipment file corresponding to the external hardware equipment. Therefore, in the embodiment of the present invention, whether a USB camera accesses the electronic device may be determined by determining whether the electronic device stores a device file (i.e., a target device file) corresponding to the USB camera.
Optionally, step 102: in the video communication process, detecting whether a target device file exists in real time or in a timing mode comprises the following steps: in the video communication process, whether a target device file exists is detected in real time or at regular time through a preset detection thread.
In the embodiment of the invention, a detection thread of the USB camera (namely a preset detection thread) can be preset to detect whether the device file corresponding to the USB camera exists in real time or at regular time.
Optionally, in the embodiment of the present invention, when a start operation of video communication is detected, such as a start operation of a video conference, a start operation of a video call, and the like, the preset detection thread may be started, so that it is detected whether there is an equipment file corresponding to the USB camera in real time or at regular time. Therefore, the preset detection thread can detect the target equipment file only in the video communication process, and the data processing amount is reduced to the maximum extent.
Optionally, step 103: under the condition that the camera is not in the starting state, controlling the camera to start and collecting images, comprising:
under the condition that the camera is not in a starting state, determining whether the camera is available according to a target equipment file; and controlling the camera to start and acquiring images under the condition that the camera is determined to be available.
In the embodiment of the present invention, when the USB camera is not in the activated state, whether the USB camera is available may be determined according to the target device file, for example, whether the USB camera is supported by the electronic device may be determined according to the name, the model, and the like of the USB camera in the target device file. And controlling the USB camera to start and acquire images under the condition that the USB camera is determined to be available (namely supported by the electronic equipment). If it is determined that the USB camera is not available (i.e., not supported by the electronic device), a prompt may be generated and displayed to inform the user that the USB camera is not available.
In order to better understand the control method of the camera provided by the embodiment of the present invention, two examples are described below.
Example 1
It is assumed that, in example one, the USB camera is already plugged in the electronic device before the video communication service is started.
As shown in fig. 2, the flow shown in the first example includes:
step 201: the video communication service is turned on and then step 202 is entered.
Step 202: and controlling the USB camera to start, acquiring an image, and then entering the step 203.
Step 203: it is determined whether the USB camera detection thread (i.e., the preset detection thread described above) is started, and then the process proceeds to step 204 if "no", and proceeds to step 205 if "yes".
Step 204: the USB camera detection thread is turned on, and then step 205 is entered.
Step 205: the detection thread is controlled to determine whether a device file corresponding to the USB camera (i.e., the target device file described above) exists at a timing, and then the process proceeds to step 206 if "no", and proceeds to step 207 if "yes".
Step 206: and waiting for the delay, and returning to the step 205 after the delay is finished.
Step 207: and judging whether the USB camera is in a starting state or not, then entering the step 208 in the case of no, and ending the process in the case of yes.
Step 208: it is determined whether the USB camera is supported, and then the process proceeds to step 209 if yes, and proceeds to step 210 if no.
Step 209: and starting the USB camera, and processing the video stream through the acquisition thread.
Step 210: and generating and displaying prompt information to remind a user that the USB camera is unavailable.
Example two
It is assumed that, in example two, the USB camera is plugged into the electronic device after the video communication service is started. After the USB camera is inserted into the electronic equipment, the Linux system installed in the electronic equipment responds to the operation and generates an equipment file corresponding to the USB camera.
As shown in fig. 3, the flow shown in example two includes:
step 301: the video communication service is turned on and then step 302 is entered.
Step 302: it is determined whether the USB camera detection thread (i.e., the preset detection thread described above, hereinafter referred to as the detection thread) is started, and then the process proceeds to step 303 if no, and proceeds to step 304 if yes.
Step 303: the USB camera detection thread is turned on, and then step 304 is entered.
Step 304: and controlling the detection thread to judge whether the device file (namely the target device file) corresponding to the USB camera exists at regular time. If the user inserts the USB camera into the electronic device and creates a device file before the detection thread detects it once, the process proceeds to step 305 when the detection thread detects a device file corresponding to the USB camera.
Step 305: and judging whether the USB camera is in a starting state or not, then entering the step 306 in the case of no, and ending the process in the case of yes.
Step 306: it is determined whether the USB camera is supported, and then, in the case of yes, the process proceeds to step 307, and in the case of no, the process proceeds to step 308.
Step 307: and starting the USB camera, and processing the video stream through the acquisition thread.
Step 308: and generating and displaying prompt information to remind a user that the USB camera is unavailable.
The above is a description of two examples. It should be noted that the foregoing two examples are only provided for better understanding of the technical solutions provided by the embodiments of the present invention, and are not intended to specifically limit the embodiments of the present invention.
In summary, in the technical solution provided in the embodiment of the present invention, in the video communication process, whether there is an equipment file corresponding to the USB camera is detected in real time or at regular time, and when the equipment file corresponding to the USB camera is detected, if it is detected that the USB camera is not in the start state, the USB camera is controlled to start, and a video image is collected. Therefore, even if the camera is unplugged and then plugged in the video communication process, the camera can automatically acquire images again, and the influence of the plugging operation of the camera on the use of the video communication service is reduced.
It should be noted that for simplicity of description, the method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
According to another aspect of the embodiments of the present invention, a control device for a camera is provided, which is applied to an electronic device, and the camera is a USB camera.
As shown in fig. 4, the control device of the camera includes:
the detecting module 401 is configured to detect whether a target device file exists in real time or at regular time during video communication.
And the target equipment file is an equipment file corresponding to the camera.
A determining module 402, configured to determine whether the camera is in a start state or not when the detecting module 401 detects that the target device file exists.
A first start control module 403, configured to control the camera to start and acquire an image when the determining module 402 determines that the camera is not in a start state.
Optionally, the detection module 401 includes:
and the detection unit is used for detecting whether the target equipment file exists in real time or at regular time through a preset detection thread in the video communication process.
Optionally, the control device of the camera further includes:
and the second starting control module is used for starting the preset detection thread when the starting operation of the video communication is detected.
Optionally, the first start control module 403 includes:
the determining unit is used for determining whether the camera is available according to the target equipment file under the condition that the judging module determines that the camera is not in the starting state;
and the starting control unit is used for controlling the camera to start and collecting images under the condition that the determining unit determines that the camera is available.
According to the technical scheme provided by the embodiment of the invention, in the video communication process, whether the equipment file corresponding to the USB camera exists is detected in real time or at regular time, and when the equipment file corresponding to the USB camera is detected, if the USB camera is not detected to be in the starting state, the USB camera is controlled to be started, and a video image is collected. Therefore, even if the camera is unplugged and then plugged in the video communication process, the camera can automatically acquire images again, and the influence of the plugging operation of the camera on the use of the video communication service is reduced.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
According to another aspect of an embodiment of the present invention, there is provided an electronic apparatus including:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform the method of controlling a camera as described above.
According to another aspect of embodiments of the present invention, there is provided a computer-readable storage medium storing a computer program for causing a processor to execute the control method of a camera described above.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal device that comprises the element.
The foregoing detailed description is directed to a video networking communication system, a data transmission method, and a data transmission apparatus, which are provided by the present invention, and specific examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the foregoing examples are only used to help understand the method and core ideas of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A control method of a camera is applied to electronic equipment and is characterized in that the camera is a USB camera, and the control method of the camera comprises the following steps:
detecting whether a target device file exists in real time or at regular time in the video communication process; the target equipment file is an equipment file corresponding to the camera;
under the condition that the target equipment file is detected, judging whether the camera is in a starting state or not;
under the condition that the camera is not in a starting state, controlling the camera to start and collecting images;
under the condition that the camera is not in the starting state, the camera is controlled to be started to collect images, and the method comprises the following steps:
under the condition that the camera is not in a starting state, determining whether the camera is available according to the target equipment file;
and under the condition that the camera is determined to be available, controlling the camera to start and collecting images.
2. The method for controlling a camera according to claim 1, wherein the detecting whether the target device file exists in real time or at regular time during the video communication process comprises:
and in the video communication process, detecting whether the target equipment file exists in real time or at regular time through a preset detection thread.
3. The method for controlling a camera according to claim 2, wherein before the detecting whether the target device file exists in real time or at regular time by the preset detection thread, the method further comprises:
and when the starting operation of the video communication is detected, starting the preset detection thread.
4. The utility model provides a controlling means of camera, is applied to electronic equipment, its characterized in that, the camera is the USB camera, controlling means of camera includes:
the detection module is used for detecting whether a target device file exists in real time or at regular time in the video communication process; the target equipment file is an equipment file corresponding to the camera;
the judging module is used for judging whether the camera is in a starting state or not under the condition that the detecting module detects that the target equipment file exists;
the first starting control module is used for controlling the camera to start and collecting images under the condition that the judging module determines that the camera is not in a starting state;
the first start control module includes:
the determining unit is used for determining whether the camera is available according to the target equipment file under the condition that the judging module determines that the camera is not in the starting state;
and the starting control unit is used for controlling the camera to start and collecting images under the condition that the determining unit determines that the camera is available.
5. The control device of the camera according to claim 4, wherein the detection module includes:
and the detection unit is used for detecting whether the target equipment file exists in real time or at regular time through a preset detection thread in the video communication process.
6. The control device for a camera according to claim 5, further comprising:
and the second starting control module is used for starting the preset detection thread when the starting operation of the video communication is detected.
7. An electronic device, comprising:
one or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform the method of controlling the camera of any of claims 1 to 3.
8. A computer-readable storage medium characterized by storing a computer program causing a processor to execute the control method of a camera according to any one of claims 1 to 3.
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| CN111683279B (en) * | 2020-06-08 | 2022-10-14 | 海信视像科技股份有限公司 | Display apparatus and image restoration method |
| CN111866498B (en) * | 2020-07-24 | 2022-04-12 | 海信视像科技股份有限公司 | Camera abnormity processing method and display device |
| CN112954424A (en) * | 2020-08-21 | 2021-06-11 | 海信视像科技股份有限公司 | Display device and camera starting method |
| CN114025157B (en) * | 2022-01-05 | 2022-07-05 | 广州朗国电子科技股份有限公司 | Identification method and system of all-in-one machine camera and all-in-one machine |
| CN115878531B (en) * | 2022-12-09 | 2024-03-15 | 珠海视熙科技有限公司 | MiPi interface control method, electronic equipment, camera module, storage medium and video system |
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