CN110832539A - Method for adjusting image transmission resolution, image shooting device and machine-readable storage medium - Google Patents

Method for adjusting image transmission resolution, image shooting device and machine-readable storage medium Download PDF

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Publication number
CN110832539A
CN110832539A CN201880039855.1A CN201880039855A CN110832539A CN 110832539 A CN110832539 A CN 110832539A CN 201880039855 A CN201880039855 A CN 201880039855A CN 110832539 A CN110832539 A CN 110832539A
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China
Prior art keywords
image
display
parameters
resolution
configuration parameters
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CN201880039855.1A
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Chinese (zh)
Inventor
岑显龙
王根源
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SZ DJI Technology Co Ltd
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SZ DJI Technology Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00Geometric image transformation in the plane of the image
    • G06T3/40Scaling the whole image or part thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment
    • H04N5/262Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects

Abstract

A method of adjusting a resolution of an image, an image photographing apparatus, and a machine-readable storage medium. A method of adjusting a rendering resolution, comprising: acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment; determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment; and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment. Therefore, in this embodiment, since the image capturing device configures the image transmission stream, the resolution of the image carried by the image transmission stream can be matched with the resolution of the display screen in the display device, which not only can improve the image quality of the image displayed by the display device, increase the viewing experience of the user, but also can reduce the power consumption of the image capturing device.

Description

Method for adjusting image transmission resolution, image shooting device and machine-readable storage medium
Technical Field
The embodiment of the invention relates to the technical field of control, in particular to a method for adjusting image transmission resolution, image shooting equipment and a machine readable storage medium.
Background
At present, image capturing devices such as cameras and video cameras are used to map to mobile devices (i.e., display devices) such as mobile phones in a wired or wireless manner, and configuration information such as fixed resolution and code stream is generally used in the process of mapping.
However, if the display device is replaced by a tablet computer from a mobile phone, that is, the resolution of the display device is increased, in this case, if the configuration information of the image transmission stream is still fixed (that is, the image transmission stream with the lower resolution is used to transmit the image), the image quality of the image displayed on the tablet computer is poor, which affects the user experience. If the display device is replaced by a mobile phone from a tablet computer, that is, the resolution of the display device is reduced, in this case, if the configuration information is still fixed (that is, images are transmitted by using a higher resolution image transmission code stream), that is, images are transmitted by using a higher resolution image transmission code stream, more details of the images cannot be embodied on the mobile phone, and the power consumption of the image shooting device is increased.
Disclosure of Invention
The embodiment of the invention provides a method for adjusting image transmission resolution, image shooting equipment and a machine-readable storage medium.
In a first aspect, an embodiment of the present invention provides a method for adjusting a resolution of an image, which is applied to an image capturing device with a display screen, where the image capturing device may be connected to the display device with the display screen, and the method includes:
acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment;
determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment;
and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
In a second aspect, an embodiment of the present invention provides an image capturing apparatus, including a processor and a memory; the memory is connected with the processor through a communication bus and is used for storing computer instructions executable by the processor; the processor is to read computer instructions from the memory to implement:
acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment;
determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment;
and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
In a third aspect, an embodiment of the present invention provides a machine-readable storage medium, on which computer instructions are stored, and when executed, the computer instructions implement the steps of the method in the first aspect.
As can be seen from the above technical solutions, in this embodiment, by configuring the image transmission stream, the resolution of the image carried by the image transmission stream can be matched with the resolution of the display screen in the display device. Therefore, when the resolution of the display equipment is improved, the image quality of the display image of the display equipment can be improved, and the watching experience of a user is improved; when the resolution of the display device is reduced, the resolution of the image carried by the image transmission code stream can be reduced, and the power consumption of the image shooting device is reduced under the condition that the watching experience of a user is kept.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for adjusting a resolution of a graph according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a process for determining configuration parameters according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating another method for adjusting resolution according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of determining configuration parameters based on specification parameters and a communication link according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating another method for determining configuration parameters based on specification parameters and communication links according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating another method for adjusting resolution according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating adjusting a display mode according to an embodiment of the present invention;
fig. 9 is a block diagram of an image capturing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, in the related art, image capturing devices use fixed resolution, code stream, and other configuration information to map to display devices. However, if the fixed resolution in the image transmission process does not match the resolution of the display screen in the display device, a corresponding problem is caused: for example, if the resolution of the display screen in the display device is higher than the fixed resolution, the image quality of the image displayed on the display screen in the display device is poor, which affects the user experience. For another example, if the resolution of the display screen in the display device is lower than the fixed resolution, the image capturing device needs to transmit the code stream by using a high-power-consumption transmission map, and the display screen in the display device cannot embody more details of the image, that is, the power consumption of the image capturing device is increased.
Therefore, an embodiment of the present invention provides a method for adjusting image-passing resolution, which can be applied to an image capturing device, and fig. 1 is a schematic view of an application scenario of the method for adjusting image-passing resolution provided in the embodiment of the present invention. Referring to fig. 1, the image capturing device 10 may be a professional image device such as a camera or a video camera, and may also be a mobile device provided with an image capturing module such as an unmanned aerial vehicle, a control terminal, a tablet computer, and a smart phone. The display device 30 may be a device provided with a display screen, such as a mobile phone, a tablet computer, or a control terminal. The image capturing apparatus 10 may include a communication interface (not shown in the drawings) through which the display apparatus 30 provided with a peer communication interface is connected. A communication connection 20 can be established between the image capturing device 10 and the display device 30. Wherein the communication connection 20 may be a wired connection, such as a USB interface connection, an HDMI interface connection, a VGA interface connection, a DVI interface connection; wireless connections are also possible, such as WiFi connections, bluetooth connections, mobile networks.
After the image capturing device 10 establishes the communication connection 20, the image capturing device 10 may execute a method for adjusting the image resolution provided by the present invention, configure the resolution of the image transport stream to match the resolution of the display screen in the display device 30, and send the image transport stream to the display device 30. Then, the display device 30 parses the image transmission stream to obtain an image, and displays the image on the display screen thereof.
It should be noted that, matching the resolution of the configuration map code stream with the resolution of the display screen in the display device 30 means that the two resolutions can be the same as much as possible, and the difference between the two resolutions is as small as possible when the two resolutions cannot be the same.
Therefore, in this embodiment, since the image capturing device 10 configures the image transmission stream, the resolution of the image carried by the image transmission stream can be matched with the resolution of the display screen in the display device. Therefore, when the resolution of the display equipment is improved, the image quality of the display image of the display equipment can be improved, and the watching experience of a user is improved; when the resolution of the display device is reduced, the resolution of the image carried by the image transmission code stream can be reduced, and the power consumption of the image shooting device is reduced under the condition that the watching experience of a user is kept.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
An embodiment of the present invention provides a method for adjusting a graph-passing resolution, which may be applied to the application scenario shown in fig. 1, and fig. 2 is a flowchart illustrating the method for adjusting the graph-passing resolution according to the embodiment of the present invention. Referring to fig. 2, a method for adjusting the image-passing resolution includes steps 201 to 203:
201, acquiring specification parameters of the display equipment under the condition that set conditions are met; the specification parameters at least comprise the resolution of a display screen in the display device.
In the present embodiment, the setting condition may be that the image capturing apparatus 10 and the display apparatus 30 have been in a connected state, which may be at least one of a wired connection state and a wireless connection state.
Specifically, when the communication interface in the image capturing device 10 detects that the connection with the display device 30 is established, a notification may be reported to the processor in the image capturing device 10. Then, it is determined by the processor in the image capturing apparatus 10 that the setting condition is satisfied according to the notification.
In an embodiment, the display device 30 may be installed with an application APP matching the image capturing device 10, and the setting condition may further include that the application APP is in an on state.
Specifically, the application APP may communicate with the communication interface at a set cycle, thereby detecting whether the image capturing apparatus 10 and the display apparatus 30 are in a connected state. After the image capturing device 10 is in a connected state with the display device 30, the application APP may send its own state to the image capturing device 10 via the communication connection 20.
Specifically, the processor of the display device 30 may communicate with the communication interface at a set cycle, thereby detecting whether the image capturing device 10 and the display device 30 are in a connected state. After the image capturing device 10 is in a connected state with the display device 30, the processor of the display device 30 may send the application APP state to the image capturing device 10 via the communication connection 20.
In an embodiment, the image capturing apparatus 10 may actively send a request for obtaining specification parameters of the display apparatus 30 to the display apparatus 30. The specification parameters refer to physical performance parameters supported by the display device. In an embodiment, the specification parameter comprises at least a resolution of a display screen in the display device. In some embodiments, the specification parameters may further include at least one of: the packing format, the encoding type, the color space range, and the ratio of I frames to P frames, which are related to the decoding of the image transport stream by the display device 30, affect the decoding efficiency of the display device 30. Of course, a technician may adjust the composition of the specification parameters according to a specific scene, and under the condition that the resolution of the image transmission stream is favorably adjusted, the corresponding scheme also falls into the protection scope of the present application.
Upon receiving the request, the display device 30 may read the specification parameters stored in advance from the memory of the display device 30 in response to the request, and feed back to the image capturing device 10 through the communication connection 30.
In an embodiment, if the application APP is installed on the display device 30, after receiving the request, the display device 30 may start the application APP, and the application APP acquires the specification parameters of the display device. The specification parameters acquired by the application program APP can be configured in advance.
In another embodiment, after the image capturing apparatus 10 is in a connected state with the display apparatus 30, the display apparatus 30 may actively transmit its specification parameters to the image capturing apparatus 10. So that the image capturing apparatus 10 can passively receive the specification parameters of the display apparatus 30.
202, determining configuration parameters of the graph code stream matched with the specification parameters; and the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment.
In the present embodiment, the configuration policy table may be set in advance in the image capturing apparatus 10. The policy table may include a plurality of sets of configuration parameters, and each set of configuration parameters may be configured and stored according to different communication connections and different resolutions, that is, each set of configuration parameters corresponds to the resolution of one image.
After receiving the specification parameters, the image capturing device 10 may determine configuration parameters of the image transmission code stream matched with the specification parameters according to the specification parameters, and the display device 30 may normally decode or directly display the received image transmission code stream configured by the image capturing device 10 based on the configuration parameters. Referring to fig. 3, the image capturing apparatus 10 may call a preset configuration policy table (corresponding to step 301). Then, the image capturing apparatus 10 determines at least one set of configuration parameters from the configuration policy table based on the specification parameters (corresponding to step 302). Then, based on at least one set of configuration parameters, the image capturing device 10 selects a configuration parameter having the smallest difference with the resolution of the display screen in the display device 30, and determines the configuration parameter as a configuration parameter of the image transmission stream matching the specification parameter (corresponding to step 303).
In some embodiments, if the image capture device 10 may determine that the configuration parameters that have the smallest difference with the resolution of the display screen are a set, the image capture device may use the configuration parameters directly.
In other embodiments, if the image capturing apparatus 10 may determine that the configuration parameters having the smallest difference with the resolution of the display screen are multiple sets, for example, the resolutions corresponding to the multiple sets of configuration parameters are the same. In this case, the image capturing apparatus 10 may further continue to compare reference parameters, such as a compression rate, an occupied bandwidth value, and whether decoding is required, of the image transmission code stream corresponding to the configuration parameters, so as to select a unique set of configuration parameters. Technicians can select appropriate reference parameters according to specific scenes, and under the condition that a unique set of configuration parameters can be selected, the corresponding scheme falls into the protection scope of the application.
For example, in the case where the resolutions are the same, the image capturing apparatus 10 determines a set of configuration parameters, which is the smallest compression ratio of the image transmission stream, from among the plurality of sets of configuration parameters, as the configuration parameters of the image transmission stream that match the specification parameters.
For another example, in the case where the resolutions are the same, the image capturing apparatus 10 determines, from the plurality of sets of configuration parameters, a set of configuration parameters whose occupied bandwidth value of the image transmission stream is the smallest, as the configuration parameters matching the specification parameters of the image transmission stream.
As another example, in the case where the resolutions are the same, the image capturing apparatus 10 determines a set of configuration parameters, which is not required to be decoded, of the image transmission stream from among the sets of configuration parameters, as the configuration parameters of the image transmission stream that match the specification parameters.
For another example, in the case where the resolutions are the same, the image capturing apparatus 10 determines, from the plurality of sets of configuration parameters, a set of configuration parameters that takes the shortest time to transmit the same number of image transmission streams as the configuration parameters of the image transmission streams that match the specification parameters.
In other embodiments, the configuration policy table may be preset as a configuration algorithm. The image capturing device 10 can write input values into the configuration algorithm. The input value of the configuration algorithm may be the resolution of the display screen of the display device 30, and the configuration algorithm may directly output the set of configuration parameters when the configuration result has only one set of configuration parameters. If the configuration result includes multiple sets of configuration parameters, the following method may be adopted:
in the first mode, the configuration algorithm may continuously request the image capturing device 10 to input reference parameters, such as a compression rate of the input image transmission code stream, an occupied bandwidth value of the image transmission code stream, whether decoding is required, time for transmission, and the like, so that the reprocessed configuration result has only one set of configuration parameters, and the set of configuration parameters is output.
In the second mode, the configuration algorithm directly outputs a plurality of sets of configuration parameters, and then the image capturing device 10 determines a set of configuration parameters according to one or more of the compression rate of the input image transmission code stream, the occupied bandwidth value of the image transmission code stream, whether decoding is needed, and the time for transmission, and the set of configuration parameters are the configuration parameters of the image transmission code stream matched with the specification parameters.
And 203, configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
In this embodiment, the image capturing device 10 may configure the code stream based on the configuration parameter, and includes at least one of the following: the encoding method comprises the following steps of packaging formats (such as GOP, GDR and the like) of the image transmission code stream, encoding types (such as HEVC, H.264 and the like) of the image transmission code stream, color space ranges (CBR, VBR, CVBR and the like) of the image transmission code stream, and proportions of I frames and P frames of the image transmission code stream.
The configuring of the image transmission code stream and the adjusting of the sequence of the image to be transmitted may include the following steps:
in a first manner, if the resolution of the image to be mapped does not exceed the resolution of the display screen of the display device 30, the image capturing device 10 may configure the image transmission stream directly based on the configuration parameters without adjusting the resolution of the image to be mapped.
In the second mode, if the resolution of the image to be mapped is greater than the resolution of the display screen of the display device 30, the image capturing device 10 may adjust the resolution of the image to be mapped to be the same as the resolution of the display screen of the display device 30, and then configure the map transmission stream based on the configuration parameters.
In a third mode, if the resolution of the image to be mapped is greater than the resolution of the display screen of the display device 30, the image capturing device 10 may reduce the resolution of the image to be mapped by a portion, that is, reduce the difference between the two resolutions. The image capturing apparatus 10 then configures the map code stream based on the configuration parameters.
It can be understood that both the second and third modes are beneficial to improving the image quality of the image displayed on the display screen of the display device 30.
In a fourth mode, since the bandwidth value of the communication link between the image capturing device 10 and the display device 30 is limited, the resolution of the image to be mapped may be affected by the bandwidth value, in this case, the resolution of the image to be mapped needs to be reduced, but the difference between the two is guaranteed to be as small as possible, so as to guarantee the smoothness of display on the display screen in the display device 30.
Then, the image capturing device 10 configures the image transmission stream based on the configuration parameters and transmits the image transmission stream to the display device 30. The display device 30 analyzes, decodes or otherwise processes the image transmission code stream to restore an image, and the image is displayed by the display screen of the display device 30, or the image is directly displayed by the display screen of the display device 30.
In an embodiment, the display screens of the image capturing device 10 and the display device 30 may display images simultaneously, or only the display screen of the image capturing device 10 may display images, or only the display screen of the display device 30 may display images. In practical applications, the image capturing apparatus 10 may preset a plurality of display modes, and adjust the display screen displaying the image according to the different display modes. For example, the mode of automatically switching the image-transmission display screen and the mode of manually switching the image-transmission display screen may be set in the image capturing apparatus 10. The automatic switching of the image-capturing display screen may be to select a display image from the display screens of the image-capturing device 10 and the display device 30, such as to turn off the display screen of the image-capturing device 10 when the display screen of the display device 30 is available, or to select the display screen of the image-capturing device 10 to display an image when the display screen of the display device 30 is unavailable. The display screen and the mode of manually switching the image-transmitting display screen may be selected according to a user's setting by selecting the display screen of the display screen display device 30 and/or the display screen of the image photographing device 10.
Therefore, in this embodiment, since the image capturing device 10 configures the image transmission stream, the resolution of the image carried by the image transmission stream can be matched with the resolution of the display screen in the display device. Therefore, when the resolution of the display equipment is improved, the image quality of the display image of the display equipment can be improved, and the watching experience of a user is improved; when the resolution of the display device is reduced, the resolution of the image carried by the image transmission code stream can be reduced, and the power consumption of the image shooting device is reduced under the condition that the watching experience of a user is kept.
An embodiment of the present invention further provides a method for adjusting image-passing resolution, which may be applied to the application scenario shown in fig. 1, and fig. 4 is a schematic flow diagram of the method for adjusting image-passing resolution provided in the embodiment of the present invention. Referring to fig. 4, a method for adjusting the resolution of a map includes steps 401 to 408:
401, acquiring specification parameters of the display device when set conditions are met; the specification parameters at least comprise the resolution of a display screen in the display device.
The specific method and principle of step 401 and step 201 are the same, please refer to fig. 2 and related contents of step 201 for detailed description, which is not repeated herein.
And 402, acquiring a bandwidth value of a communication link between the display device and the image shooting device, wherein the bandwidth value of the communication link is used for determining a maximum image transmission code stream.
In this embodiment, the acquiring, by the image capturing device 10, the bandwidth value of the communication link with the display device 30 may include:
in a first mode, when the image capturing device 10 and the display device 30 are in a connected state, the communication interface of the image capturing device 10 actively detects the bandwidth value of the communication link, and then sends the bandwidth value to the processor, so that the image capturing device 10 can obtain the bandwidth value of the communication link.
In the second mode, when the image capturing device 10 and the display device 30 are in a connected state, the communication interface of the display device 30 detects the bandwidth value of the communication link and then transmits the bandwidth value to the image capturing device 10, so that the image capturing device 10 can acquire the bandwidth value of the communication link.
In a third mode, when the image capturing device 10 and the display device 30 are in a connected state and the application APP is installed on the display device 30, the application APP may detect a bandwidth value of the communication link and then send the bandwidth value to the image capturing device 10, so that the image capturing device 10 may obtain the bandwidth value of the communication link.
In this embodiment, the image capturing device 10 may determine the maximum image transmission stream according to the bandwidth value of the communication link. Theoretically, the bandwidth value used by the maximum image transmission code stream and the bandwidth value of the communication link should be equal. In practical applications, since the image capturing device 10 and the display device 30 need to transmit some auxiliary information, such as control information, synchronization information, and the like, during the image transmission process, the bandwidth value used by the maximum image transmission code stream is slightly smaller than the bandwidth value of the communication link.
It should be noted that step 401 may be executed before or after step 402, or may be executed simultaneously, and this embodiment is not limited.
403, determining configuration parameters of the graph code stream matched with the specification parameters and the bandwidth values of the communication links; and the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment.
In this embodiment, the image capturing device 10 may determine the configuration parameters of the matched image transmission code stream based on the specification parameters and the bandwidth value of the communication link, and the resolution of the image carried by the image transmission code stream is matched with the resolution of the display screen in the display device, which may include the following modes:
first, referring to fig. 5, the image capturing apparatus 10 may determine at least one set of configuration parameters based on the specification parameters (corresponding to step 501). Then, the image capturing device 10 may determine bandwidth values corresponding to the image transmission streams according to each set of configuration parameters in the at least one set of configuration parameters (corresponding to step 502). Then, the image capturing device 10 compares the bandwidth value of the image transmission stream with the bandwidth value corresponding to the maximum image transmission stream (corresponding to step 503); if the bandwidth value of the image transmission code stream does not exceed the bandwidth value corresponding to the maximum image transmission code stream, determining the configuration parameter with the minimum resolution difference with the display screen in the display device 30 as the configuration parameter of the image transmission code stream matched with the bandwidth value of the specification parameter and the communication link (corresponding to step 504), and if the bandwidth value of the image transmission code stream is greater than the bandwidth value corresponding to the maximum image transmission code stream, determining the configuration parameter corresponding to the maximum image transmission code stream as the configuration parameter of the image transmission code stream matched with the bandwidth value of the specification parameter and the communication link (corresponding to step 505).
Second, referring to fig. 6, the image capturing apparatus 10 may determine the maximum resolution of the maximum image transport stream (corresponding to step 601). Then, the image capturing apparatus 10 may compare the maximum resolution with the resolution of the display screen in the display apparatus 30 (corresponding to step 602); if the maximum resolution exceeds the resolution of the display screen in the display device 30, the image capturing device 10 may use the configuration parameter determined based on the specification parameter as the configuration parameter of the image transmission stream that matches the specification parameter and the communication link bandwidth value (corresponding to step 603), and if the maximum resolution of the maximum image transmission stream is smaller than the resolution of the display screen in the display device 30, use the configuration parameter corresponding to the maximum image transmission stream as the configuration parameter of the image transmission stream that matches the specification parameter and the communication link bandwidth value (corresponding to step 604).
It should be noted that, in the embodiment, the manner of determining the configuration parameters based on the specification parameters may refer to the relevant content in step 202, and is not described herein again.
It should be noted that, the configuration parameter corresponding to the maximum resolution of the maximum graph code stream may also refer to the relevant content in step 202, and is not described herein again.
And 404, configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
The specific method and principle of step 404 and step 203 are the same, and please refer to fig. 2 and related contents of step 203 for detailed description, which is not repeated herein.
Therefore, in this embodiment, by obtaining the bandwidth value of the communication link, it can be ensured that the bandwidth value occupied by the determined image transmission code stream does not exceed the bandwidth value corresponding to the maximum image transmission code stream, and the image transmission efficiency is ensured. In addition, in this embodiment, since the image capturing device 10 configures the image transmission stream, the resolution of the image carried by the image transmission stream can be matched with the resolution of the display screen in the display device. Therefore, when the resolution of the display equipment is improved, the image quality of the display image of the display equipment can be improved, and the watching experience of a user is improved; when the resolution of the display device is reduced, the resolution of the image carried by the image transmission code stream can be reduced, and the power consumption of the image shooting device is reduced under the condition that the watching experience of a user is kept.
An embodiment of the present invention further provides a method for adjusting image-passing resolution, which may be applied to the application scenario shown in fig. 1, and fig. 7 is a flowchart illustrating the method for adjusting image-passing resolution according to the embodiment of the present invention. Referring to fig. 7, a method for adjusting the resolution of a map includes steps 701 to 704:
701, acquiring specification parameters of the display equipment under the condition that set conditions are met; the specification parameters at least comprise the resolution of a display screen in the display device.
The specific method and principle of step 701 are consistent with those of step 201, and please refer to fig. 2 and related contents of step 201 for detailed description, which is not described herein again.
In some embodiments, the display device 30 may further obtain the status of its display screen, for example, available or unavailable, and then send the status to the image capturing device 10 together with the specification parameters, or the application APP in the display device 30 sends the status of whether the display screen is available in the display device 30 together with the specification parameters to the image capturing device 10.
And 702, starting a display screen in the display device and starting image transmission with the display device based on the display mode of the image shooting device.
In this embodiment, referring to fig. 8, the image capturing apparatus 10 may acquire its own display mode (corresponding to step 801), and if its own current display mode indicates that the mode of the image transmission display screen is automatically switched, execute the step of acquiring the specification parameters of the display apparatus 30, that is, execute step 701 (corresponding to step 802).
If the current display mode of the image capturing device 10 indicates that the mode of the image transmission display screen is manually switched, the image capturing device 10 may start the display screen of the image capturing device 10 and/or the display screen of the display device 30, and the image transmission between the local image and the display device 30 in the current display mode.
Of course, the image capturing apparatus 10 may also prompt the user to adjust the display mode in a visual manner such as a preset dialog box. Meanwhile, the image capturing apparatus 10 may detect a trigger operation by the user, such as an operation of a physical key, or a trigger operation of a display screen, and adjust the display mode according to the trigger operation.
In some embodiments, the image capturing device 10 may default that the display screen of the display device 30 always handles the available state, so that the image capturing device 10 may turn on the display screen and the map transmission with the display device 30 in a direct control manner or by sending a control instruction.
In other embodiments, when the display mode of the image capturing apparatus 10 is a mode that characterizes automatic switching of the image transmission display screen, and when the state of the display screen in the display apparatus 30 is available, the image capturing apparatus 10 sends a control instruction that characterizes turning on the display to the display apparatus 30. The display device 30 turns on the display screen when receiving the control instruction. Meanwhile, the image capturing apparatus 10 may turn on image transmission with the display apparatus 30.
In still other embodiments, while the display device 30 and the image capturing device 10 handle the connection state, the display device 30 may allow the image capturing device 10 to directly control it according to the pre-configured contents. In this case, the image capturing apparatus 10 may directly turn on the display screen in the display apparatus 30 and the map transmission between the image capturing apparatus 10 and the display apparatus 30 when detecting that the display screen in the display apparatus 30 is in the usable state.
Specifically, the image capturing device 10 may further synchronously close the local display screen and image transmission between the local display screen and the image capturing device 10 after receiving a notification indicating that the display screen is successfully opened, which is fed back by the display and display device 30, by sending a control instruction or directly turning on the display device 30. Since the power consumption of the display screen is relatively large in proportion to the image capturing apparatus 10, the power consumption of the image capturing apparatus 10 can be greatly reduced by turning off the local display screen.
703, determining configuration parameters of the graph code stream matched with the specification parameters; and the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment.
It should be noted that, the fact that the resolution of the image transmission stream matches the resolution of the display screen in the display device 30 means that the two resolutions can be the same as much as possible, and the difference between the two resolutions is as small as possible when the two resolutions cannot be the same.
The specific method and principle of step 703 and step 202 are the same, please refer to fig. 2 and the related contents of step 202 for detailed description, which is not repeated herein.
And 704, configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
The specific method and principle of step 704 and step 203 are the same, and please refer to fig. 2 and related contents of step 203 for detailed description, which is not repeated herein.
Therefore, in this embodiment, since the image capturing device 10 configures the image transport stream according to the specification parameters, the resolution of the image carried by the image transport stream can be matched with the resolution of the display screen in the display device. Therefore, when the resolution of the display equipment is improved, the image quality of the display image of the display equipment can be improved, and the watching experience of a user is improved; when the resolution of the display device is reduced, the resolution of the image carried by the image transmission code stream can be reduced, and the power consumption of the image shooting device is reduced under the condition that the watching experience of a user is kept. Meanwhile, in the implementation, the image shooting device 10 can freely select whether the image is transmitted to the image shooting device 10 for display or transmitted to the display device 30 for display, so that the energy consumption can be further reduced; or both are displayed simultaneously, so that the user can conveniently view the images at two sides simultaneously.
The embodiment of the invention also provides image shooting equipment, the image shooting equipment can be professional image equipment such as a camera, a camera and the like, and also can be mobile equipment provided with an image acquisition module such as an unmanned aerial vehicle, a control terminal, a tablet personal computer, a smart phone and the like, and fig. 9 is a block diagram of the image shooting equipment provided by the embodiment of the invention. Referring to fig. 9, an image capturing apparatus 900 includes a processor 901, a memory 902, a communication bus 903, and a display screen 904; the display 904 is connected to the processor 901 via a communication bus 903; the memory 902 is connected to the processor 901 via a communication bus 903 and is used for storing computer instructions executable by the processor 901; the processor 901 is configured to read computer instructions from the memory 902 to implement:
acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment;
determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment;
and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
In an embodiment, the processor 901 is further configured to:
acquiring a bandwidth value of a communication link between the display device and the image shooting device, wherein the bandwidth value of the communication link is used for determining a maximum image transmission code stream;
determining the configuration parameters of the graph code stream matched with the specification parameters comprises the following steps:
and determining the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link.
In an embodiment, the determining, by the processor 901, the configuration parameter of the graph transport stream that matches the specification parameter and the bandwidth value of the communication link includes:
determining at least one set of configuration parameters based on the specification parameters;
determining bandwidth values of the graph transmission streams corresponding to each group of configuration parameters in the at least one group of configuration parameters;
and screening out configuration parameters of the image transmission code stream not exceeding the maximum bandwidth value based on the bandwidth value of the image transmission code stream, and determining the configuration parameters with the minimum resolution difference with a display screen in the display equipment as the configuration parameters of the image transmission code stream matched with the bandwidth value specification parameters and the bandwidth value of the communication link.
In an embodiment, the determining, by the processor 901, the configuration parameter of the graph transport stream that matches the specification parameter and the bandwidth value of the communication link includes:
determining the maximum resolution corresponding to the maximum image transmission stream;
if the maximum resolution of the image transmission code stream exceeds the resolution of a display screen in the display equipment, taking configuration parameters determined based on the specification parameters as the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link; and if the maximum resolution of the image transmission code stream is smaller than the resolution of a display screen in the display equipment, taking the configuration parameters corresponding to the maximum image transmission code stream as the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link.
In an embodiment, the determining, by the processor 901, the configuration parameter of the graph code stream that matches the specification parameter includes:
calling a preset configuration policy table;
determining at least one set of configuration parameters from the configuration policy table based on the specification parameters;
and determining the configuration parameter with the minimum resolution difference with a display screen in the display equipment as the configuration parameter of the image transmission stream matched with the specification parameter based on the at least one group of configuration parameters.
In one embodiment, the specification parameters further include at least one of: packaging format, encoding type, color space range, proportion of I-frame and P-frame.
In an embodiment, an application APP is installed on the display device, and the specification parameter is obtained by the application APP.
In an embodiment, before the processor 901 is configured to obtain the specification parameters of the display device, it is further configured to:
acquiring a display mode of the image shooting equipment;
and if the display mode is a mode representing automatic switching of the image transmission display screen, executing the step of acquiring the specification parameters of the display equipment.
In an embodiment, the processor 901 is further configured to:
and starting a display screen in the display equipment and starting image transmission between the display equipment and the display equipment based on the display mode of the image shooting equipment.
In an embodiment, the processor 901 is further configured to:
and closing a display screen in the image shooting equipment and stopping local map transmission.
In an embodiment, the setting condition includes that the image capturing apparatus and the display apparatus are in a connected state.
In an embodiment, the connection state includes at least one of: a wired connection state and a wireless connection state.
In an embodiment, when an application APP is installed on the display device, the setting condition further includes that the application APP is in an open state.
An embodiment of the present invention further provides a machine-readable storage medium, on which computer instructions are stored, and when executed, the computer instructions implement the steps of the method described in fig. 2 to 8.
It is 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. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above detailed description of the detection apparatus and method provided by the embodiments of the present invention has been presented, and the present invention has been made by applying specific examples to explain the principle and the implementation of the present invention, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; to sum up, the present disclosure should not be construed as limiting the invention, which will be described in the following description but will be modified within the scope of the invention by the spirit of the present disclosure.

Claims (27)

1. The method for adjusting the image transmission resolution ratio is applied to image shooting equipment provided with a display screen, the image shooting equipment can be connected with the display equipment provided with the display screen, and the method comprises the following steps:
acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment;
determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment;
and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
2. The method of claim 1, further comprising:
acquiring a bandwidth value of a communication link between the display device and the image shooting device, wherein the bandwidth value of the communication link is used for determining a maximum image transmission code stream;
determining the configuration parameters of the graph code stream matched with the specification parameters comprises the following steps:
and determining the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link.
3. The method of claim 2, wherein determining configuration parameters of the graph transport stream that match the specification parameters and bandwidth values of the communication link comprises:
determining at least one set of configuration parameters based on the specification parameters;
determining bandwidth values of the graph transmission streams corresponding to each group of configuration parameters in the at least one group of configuration parameters;
and screening out configuration parameters of the image transmission code stream not exceeding the maximum bandwidth value based on the bandwidth value of the image transmission code stream, and determining the configuration parameters with the minimum resolution difference with a display screen in the display equipment as the configuration parameters of the image transmission code stream matched with the bandwidth value specification parameters and the bandwidth value of the communication link.
4. The method of claim 2, wherein determining configuration parameters of the graph transport stream that match the specification parameters and bandwidth values of the communication link comprises:
determining the maximum resolution corresponding to the maximum bandwidth value graph transmission stream;
if the maximum resolution of the image transmission code stream exceeds the resolution of a display screen in the display equipment, taking configuration parameters determined based on the specification parameters as the configuration parameters of the image transmission code stream matched with the bandwidth value specification parameters and the communication link bandwidth value; and if the maximum resolution of the image transmission code stream is smaller than the resolution of a display screen in the display equipment, taking the configuration parameter corresponding to the bandwidth value of the maximum image transmission code stream as the configuration parameter of the image transmission code stream matched with the bandwidth value specification parameter and the communication link bandwidth value.
5. The method of claim 1, wherein determining configuration parameters of the graph codestream that match the specification parameters comprises:
calling a preset configuration policy table;
determining at least one set of configuration parameters from the configuration policy table based on the specification parameters;
and determining the configuration parameter with the minimum resolution difference with a display screen in the display equipment as the configuration parameter of the image transmission stream matched with the specification parameter based on the at least one group of configuration parameters.
6. The method of claim 1, wherein the specification parameters further comprise at least one of: packaging format, encoding type, color space range, proportion of I-frame and P-frame.
7. The method according to claim 6, wherein an application program APP is installed on the display device, and the specification parameters are obtained by the application program APP.
8. The method of claim 1, wherein prior to obtaining the specification parameters of the display device, the method further comprises:
acquiring a display mode of the image shooting equipment;
and if the display mode is a mode representing automatic switching of the image transmission display screen, executing the step of acquiring the specification parameters of the display equipment.
9. The method of claim 8, further comprising:
and starting a display screen in the display equipment and starting image transmission between the display equipment and the display equipment based on the display mode of the image shooting equipment.
10. The method of claim 8, further comprising:
and closing a display screen in the image shooting equipment and stopping local map transmission.
11. The method according to claim 1, wherein the setting condition includes that the image capturing apparatus and the display apparatus are in a connected state.
12. The method of claim 11, wherein the connection state comprises at least one of: a wired connection state and a wireless connection state.
13. The method according to claim 11, wherein when an application program APP is installed on the display device, the setting condition further includes that the application program APP is in an on state.
14. An image capturing apparatus characterized by comprising a processor and a memory; the memory is connected with the processor through a communication bus and is used for storing computer instructions executable by the processor; the processor is to read computer instructions from the memory to implement:
acquiring specification parameters of the display equipment under the condition of meeting set conditions; the specification parameters at least comprise the resolution of a display screen in the display equipment;
determining configuration parameters of the graph code stream matched with the specification parameters; the resolution of the image carried by the image transmission code stream is matched with the resolution of a display screen in the display equipment;
and configuring the graph transmission stream based on the configuration parameters and sending the graph transmission stream to the display equipment, and displaying an image by a display screen of the display equipment.
15. The image capture device of claim 14, wherein the processor is further configured to:
acquiring a bandwidth value of a communication link between the display device and the image shooting device, wherein the bandwidth value of the communication link is used for determining a maximum image transmission code stream;
determining the configuration parameters of the graph code stream matched with the specification parameters comprises the following steps:
and determining the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link.
16. The image capture device of claim 15, wherein the processor configured to determine configuration parameters of the graph transport stream that match the specification parameters and bandwidth values of the communication link comprises:
determining at least one set of configuration parameters based on the specification parameters;
determining bandwidth values of the graph transmission streams corresponding to each group of configuration parameters in the at least one group of configuration parameters;
and screening out configuration parameters of the image transmission code stream not exceeding the maximum bandwidth value based on the bandwidth value of the image transmission code stream, and determining the configuration parameters with the minimum resolution difference with a display screen in the display equipment as the configuration parameters of the image transmission code stream matched with the bandwidth value specification parameters and the bandwidth value of the communication link.
17. The image capture device of claim 15, wherein the processor configured to determine configuration parameters of the graph transport stream that match the specification parameters and bandwidth values of the communication link comprises:
determining the maximum resolution corresponding to the maximum image transmission stream;
if the maximum resolution of the image transmission code stream exceeds the resolution of a display screen in the display equipment, taking configuration parameters determined based on the specification parameters as the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link; and if the maximum resolution of the image transmission code stream is smaller than the resolution of a display screen in the display equipment, taking the configuration parameters corresponding to the maximum image transmission code stream as the configuration parameters of the image transmission code stream matched with the specification parameters and the bandwidth value of the communication link.
18. The image capturing apparatus of claim 14, wherein the processor configured to determine configuration parameters of the graphics stream that match the specification parameters comprises:
calling a preset configuration policy table;
determining at least one set of configuration parameters from the configuration policy table based on the specification parameters;
and determining the configuration parameter with the minimum resolution difference with a display screen in the display equipment as the configuration parameter of the image transmission stream matched with the specification parameter based on the at least one group of configuration parameters.
19. The image capturing apparatus according to claim 14, wherein the specification parameters further include at least one of: packaging format, encoding type, color space range, proportion of I-frame and P-frame.
20. The apparatus according to claim 19, wherein an application program APP is installed on said display apparatus, and said specification parameters are acquired by said application program APP.
21. The image capturing apparatus of claim 14, wherein the processor, prior to obtaining the specification parameters of the display apparatus, is further configured to:
acquiring a display mode of the image shooting equipment;
and if the display mode is a mode representing automatic switching of the image transmission display screen, executing the step of acquiring the specification parameters of the display equipment.
22. The image capture device of claim 21, wherein the processor is further configured to:
and starting a display screen in the display equipment and starting image transmission between the display equipment and the display equipment based on the display mode of the image shooting equipment.
23. The image capture device of claim 21, wherein the processor is further configured to:
and closing a display screen in the image shooting equipment and stopping local map transmission.
24. The apparatus according to claim 14, wherein the setting condition includes that the image capturing apparatus and the display apparatus are in a connected state.
25. The image capturing apparatus according to claim 24, characterized in that the connection state includes at least one of: a wired connection state and a wireless connection state.
26. The apparatus according to claim 24, wherein when an application APP is installed on said display apparatus, said setting condition further includes that said application APP is in an on state.
27. A machine-readable storage medium having stored thereon computer instructions which, when executed, implement the steps of the method of any one of claims 1 to 13.
CN201880039855.1A 2018-09-29 2018-09-29 Method for adjusting image transmission resolution, image shooting device and machine-readable storage medium Pending CN110832539A (en)

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