CN104184947B - A kind of method and system of remote photographic focusing - Google Patents
A kind of method and system of remote photographic focusing Download PDFInfo
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- CN104184947B CN104184947B CN201410416915.0A CN201410416915A CN104184947B CN 104184947 B CN104184947 B CN 104184947B CN 201410416915 A CN201410416915 A CN 201410416915A CN 104184947 B CN104184947 B CN 104184947B
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Abstract
The invention discloses a kind of method and system of remote photographic focusing, specifically include controlling terminal and camera terminal, controlling terminal is connect with camera terminal, and register call back function for handling camera terminal return data, controlling terminal starts remote photographic application later, shooting instruction is sent to camera terminal and inquires whether it supports focusing function, camera terminal supports focusing function then to open shooting preview interface, and focus adjustment range and live preview picture are sent to controlling terminal, controlling terminal shows the operational controls for focusing according to the focus adjustment range in its preview interface.The present invention remotely controls camera terminal by controlling terminal and focuses and take pictures, so that photographing operation is versatile and flexible, greatly facilitates the operation such as self-timer, group photo, and energy live preview picture in focussing process, improves focusing precision and quality of taking pictures.
Description
Technical field
The present invention relates to the method and system that mobile communication technology field more particularly to a kind of remote photographic are focused.
Background technique
In recent years, more and more mobile whole in addition to existing digital camera with the rapid development of mobile communication technology
End equipment has camera function, such as mobile phone, PDA(Personal Digital Assistant), tablet computer.These have the shifting of camera function
Dynamic terminal and digital camera, allow people to record moment excellent in life at any time, enrich people's lives, but clapping
According in the process, almost everyone, which encountered, looks for people to help taking pictures to oneself, or the case where require help by others, especially exists
When self-timer and group photo, this is derived from the unicity of photographing device mode of operation, cannot be remotely operated, be seriously affected well
User experience.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of methods of remote photographic focusing
And system, controlling terminal control the focusing of camera terminal, take pictures and the function such as preview interface of focusing by remotely controlling camera terminal
Can, to preferably control focusing quality and shooting effect, keeps photographing operation convenient, various, precisely flexible, improve user's body
It tests.
In order to achieve the above object, this invention takes following technical schemes:
A kind of method of remote photographic focusing, described method includes following steps:
A, controlling terminal and camera terminal connect, and register the call back function for handling camera terminal return data；
B, controlling terminal starts remote photographic application, sends shooting instruction to camera terminal and inquires whether it supports to focus
Function；
C, camera terminal opens shooting preview interface, and sends focus adjustment range and live preview picture to controlling terminal
Face；
D, controlling terminal shows the operation control for focusing according to the focus adjustment range in its preview interface
Part.
The method of the remote photographic focusing, further includes following steps:
E, focus operations when controlling terminal receives operational controls described in user's operation instruct, and send and change to camera terminal
The control instruction of focal length；
F, camera terminal returns live preview picture according to the focal length of the control instruction setting camera for changing focal length
It is transmitted to controlling terminal；
G, controlling terminal receives the live preview picture and shows.
Further, the method for the remote photographic focusing, further includes following steps:
H, controlling terminal sends photographing instruction to camera terminal and completes movement of taking pictures to control camera terminal.
The method of the remote photographic focusing, the step H further includes later following steps:
I, camera terminal zooms in and out the image of shooting according to the screen size of controlling terminal；
J, the clarity of image is reduced, and compression of images is returned into controlling terminal and is shown.
In the method for the remote photographic focusing, the step F is specifically included:
The focal length of camera is arranged according to the control instruction for changing focal length for F1, camera terminal；
F2, live preview picture is zoomed in and out according to the screen size of controlling terminal；
F3, the clarity for reducing live preview picture, and squeezed data；
F4, the picture data of compression is returned into controlling terminal.
Wherein, in step f 4, the picture data of compression is returned to control eventually with the frequency of 3 frame per second by camera terminal
End.
The method of remote photographic focusing, in the step A, controlling terminal passes through bluetooth or WIFI and camera terminal
Establish connection.
In the method for the remote photographic focusing, the step A is specifically included:
A1, controlling terminal send bluetooth online request to camera terminal；
A2, camera terminal are given and accepted the bluetooth online request, are opened the starting of BTNotification program and are monitored service；
A3, controlling terminal starting monitor service, and are used to handle returning for camera terminal return data to service registration is monitored
Letter of transfer number.
In the method for remote photographic focusing, the return data of camera terminal include: take pictures failure error code, take pictures
Successful number, image echo.
Corresponding, the present invention also provides a kind of systems of method for realizing remote photographic focusing, comprising: control
Terminal and camera terminal；
The controlling terminal for connecting with camera terminal, and registers the readjustment for handling camera terminal return data
Function；Start remote photographic application, send shooting instruction to camera terminal and inquires whether it supports focusing function；
The camera terminal, for opening shooting preview interface, and to controlling terminal transmission focus adjustment range and in real time
Preview screen；
The controlling terminal is also used to be shown in preview interface according to the focus adjustment range for focusing
Operational controls.
Compared to the prior art, the method and system of remote photographic focusing provided by the invention, including controlling terminal and bat
Terminal is taken the photograph, controlling terminal sends shooting instruction to camera terminal and inquire whether it supports to adjust by bluetooth connection camera terminal
Burnt function, camera terminal opens shooting preview interface, and sends focus adjustment range and live preview picture, control to controlling terminal
Terminal processed shows the operational controls for focusing according to focus adjustment range in its preview interface, passes through user
Operational controls control camera terminal focuses and takes pictures, and realizes the function that real-time, long-range control camera terminal takes pictures and focuses, and
And can live preview focusing result and shooting effect, substantially increase the quality of shooting image and convenience, the flexibility of operation.
Detailed description of the invention
Fig. 1 is the method flow diagram of remote photographic of the present invention focusing.
Fig. 2 is the bluetooth SPP protocol architecture figure of the method for remote photographic of the present invention focusing.
Fig. 3 is the specific method flow chart of the method and step S6 of remote photographic of the present invention focusing.
Fig. 4 is the method flow diagram of the movement of taking pictures in the method for remote photographic of the present invention focusing under non-focusing patterns.
Fig. 5 is structural block diagram of the present invention for realizing the system of the method for remote photographic focusing.
Specific embodiment
The present invention provides a kind of method and system of remote photographic focusing, establishes bluetooth by controlling terminal and camera terminal
Connection, controlling terminal remotely controls camera terminal and realizes live preview focus effect and preview of taking pictures, convenient, fast, accurate
It remotely controls the Focussing of camera terminal and takes pictures.
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.
Referring to Fig. 1, the method for the remote photographic focusing specifically comprises the following steps:
S1, controlling terminal and camera terminal connect, and register the call back function for handling camera terminal return data.
Wherein, the controlling terminal establishes connection by bluetooth or WIFI and camera terminal；In the present embodiment, described
Controlling terminal establishes connection by bluetooth and camera terminal, and when bluetooth is online, the step S1 is specifically included: the first step, control
Terminal processed sends bluetooth online request to camera terminal；Second step, camera terminal are given and accepted the bluetooth online request, are opened
Service is monitored in the starting of BTNotification program；Third step, controlling terminal starting monitor service, and use to service registration is monitored
In the call back function of processing camera terminal return data.
Wherein, the BTNotification program is the apk packet being mounted in camera terminal, is just supervised after program starting
The control command from functional mobile phone end is listened, corresponding movement or return data are executed according to order, data are transmitted with data packet
Form be transmitted between controlling terminal and camera terminal.
Bluetooth is a kind of wireless communication technique of holding equipment short haul connection (in general 10 meters), can include mobile electricity
Wireless messages exchange is carried out between numerous electronic equipments such as words, PDA, wireless headset, laptop.The present embodiment bluetooth connection
Underlying protocol use bluetooth SPP (Serial Port profile Bluetooth Serial Port) agreement, SPP is numerous BT
One in profile, it defines the process for emulating RS232 serial communication standard between two bluetooth equipments by bluetooth
And rule.It makes the application based on wire transmission have a kind of alternative solution-BT virtual serial port transmission of wireless transmission, such as schemes
2 be SPP protocol architecture figure:
The SPP protocol architecture figure includes blue-tooth device A and blue-tooth device B, wherein blue-tooth device A includes connection request mould
Block 101, serial ports emulates API module 102, for finding which service is available, and the feature of determination these available services
Bluetooth service discovery protocol module 103, for provide serial ports emulation API module 102 for application program use based on GSM
The Bluetooth adapter 104 of TS 07.10, management agreement module 105, logic link control protocol module 106 and bluetooth baseband 107,
Wherein, the management agreement module 105, logic link control protocol module 106 and bluetooth baseband 107 are equivalent to seven model of OSI
Physical layer and data link layer.Blue-tooth device B is identical with blue-tooth device A, and stream oriented device is connected by bluetooth SPP agreement；
The maximum transfer speed that the SPP agreement is theoretically supported is 16KB per second (128kbps), but is probably 10KB in practice
Left and right is supported to establish a plurality of connection simultaneously between devices, but synchronization can only handle a connection.
The controlling terminal and camera terminal are that Android is operating system, since Android is the behaviour based on open source
Make to developed the system for mobile device on system Linux, by bottom linux kernel, middleware, user interface and answer
It is formed with software, using software heap layer architecture, bottom is developed by C language, only provides basic function；Middle layer include function library and
Virtual machine is developed by C++；The various application software of top layer such as converse, short message, telephone directory, are operate on virtual machine
Java applet, by individual or company's self-developing, being compiled into the format of apk, be installed in android system can be direct
It uses, therefore, respective application software is set in controlling terminal and camera terminal, can wirelessly be connected by bluetooth or WIFI realization
It connects, certainly, the operating system of the controlling terminal and camera terminal can also be Windows or apple IOS, as long as being able to achieve
The two is wirelessly connected.
The controlling terminal mainly plays long-range accurate control camera terminal and is shot, in order to correctly listen to
Camera terminal returns the instruction or data to come, and controlling terminal need to start a monitoring service, which receives return data
After will do it parsing, corresponding call back function is called according to parsing result.Therefore it is applied in controlling terminal starting remote photographic
Before, to the data that return to camera terminal of one call back function of service registration are monitored, error code including failure of taking pictures is taken pictures into
Number, image echo of function etc. are handled, and return the instruction or data that come to ensure that controlling terminal receives camera terminal
Correctness improves the reliability of instruction and data.
S2, controlling terminal start remote photographic application, send shooting instruction to camera terminal and inquire whether it supports to adjust
Burnt function.
Since not all camera terminal all supports focusing function, if being carried out to the camera terminal for not supporting focusing function
Focusing control, easily cause program and report an error, cause to perplex to user, therefore, controlling terminal start remote photographic application after, need to
Camera terminal sends shooting instruction and inquires whether it supports focusing function, and it is whole to control to feed back corresponding result by camera terminal
End.When camera terminal supports focusing function, and then enters next step S3 and execute non-focusing if not supporting focusing function
Movement of taking pictures under mode.
S3, camera terminal open shooting preview interface, and send focus adjustment range and live preview picture to controlling terminal
Face.
S4, controlling terminal show the operation control for focusing according to the focus adjustment range in its preview interface
Part.
In the embodiment of the present invention, the live preview picture and focus adjustment model of camera terminal can be shown in controlling terminal
It encloses, and long-range focusing control can be carried out to camera terminal by controlling terminal, realize the long-range control to camera terminal, overcome
It is unable to preview screen when long-range control camera terminal, controls the shortcomings that focusing range, makes remotely to control camera terminal and takes pictures change
Must be simple as directly controlling, it is convenient, substantially increase the quality and convenience taken pictures.
The method of remote photographic focusing provided in an embodiment of the present invention, the coke of camera terminal can be completed by controlling terminal
Away from work is adjusted, as shown in Figure 1, the method that the remote photographic is focused further includes following steps:
S5, controlling terminal receive focus operations instruction when operational controls described in user's operation, change to camera terminal transmission
The control instruction of varifocal.
The focal length of camera is arranged according to the control instruction for changing focal length for S6, camera terminal, by live preview picture
Return to controlling terminal.
S7, controlling terminal receive the live preview picture and show.
By the transmission of the instruction and data between controlling terminal and camera terminal, so that the live preview after Focussing
Picture is shown in controlling terminal, further improves the precision of focusing.In view of the limitation of bluetooth transmission speed, in preview
When, camera terminal first according to the screen of controlling terminal, zooms in and out preview screen, then by reducing clarity, picture
Data compression is sent to a reasonable numerical value, then with the frequency of 3 frame per second to controlling terminal, i.e. the preview that shows of controlling terminal
Picture is not complete smooth, but is refreshed frame by frame, there is brief time interval between picture；As a result, in the present invention
In embodiment, as shown in figure 3, the step S6 specifically comprises the following steps:
The focal length of camera is arranged according to the control instruction for changing focal length for S61, camera terminal；
S62, live preview picture is zoomed in and out according to the screen size of controlling terminal；
S63, the clarity for reducing live preview picture, and squeezed data；
S64, the picture data of compression is returned into controlling terminal.
Wherein, in step S64, the picture data of compression is returned to control eventually with the frequency of 3 frame per second by camera terminal
End；Although controlling terminal shows that preview screen is to refresh frame by frame, be not it is complete smooth, when having brief between picture
Between be spaced, but since interval time is shorter, will not influence shooting and focusing.
Further, please continue to refer to Fig. 1, the method for remote photographic focusing of the invention further includes following steps:
S8, controlling terminal send photographing instruction to camera terminal and complete movement of taking pictures to control camera terminal.
Screen size, resolution in view of controlling terminal etc. are different from camera terminal, remote photographic focusing of the invention
Method further include following steps:
S9, camera terminal zoom in and out the image of shooting according to the screen size of controlling terminal.
For convenience of hand-held, controlling terminal is generally more small and exquisite, and screen size is smaller, and resolution of screen is no more than
720P, it is preferred that it is preferable with the resolution of QVGA and QCIF grade, and in order to guarantee that the image after camera terminal scaling is controlling
Display will not be obscured excessively in terminal, the image of camera terminal shooting also with 1600 × 1200,1080p or smaller resolution ratio compared with
Be it is suitable, show extremely caused by avoiding due to camera terminal and controlling terminal screen size are different, realizes image most
Good display.
S10, the clarity for reducing image, and compression of images is returned into controlling terminal and is shown.
Since the image resolution ratio of camera terminal shooting is higher than the resolution of screen of controlling terminal, camera terminal first will
Image is compressed, and the resolution ratio of image is made to match with controlling terminal, then is returned to controlling terminal and shown, data biography is reduced
Throughput rate improves data transmission bauds, show that image can faster in controlling terminal, and will not influence image and show matter
Amount, avoids distortion caused by high-definition picture is shown on low-res screen.
Further, when camera terminal does not support focusing function, as indicated at 4, then taking pictures under non-focusing patterns is executed
Movement, specifically comprises the following steps:
Live preview picture is returned to controlling terminal by S21, camera terminal；
S22, controlling terminal receive the live preview picture and show；
S23, movement of taking pictures is completed from controlling terminal to camera terminal transmission photographing instruction control camera terminal；
S24, camera terminal zoom in and out the image of shooting according to the screen size of controlling terminal, and reduce the clear of image
Compression of images is returned to controlling terminal and shown by clear degree.
I.e. when camera terminal does not support focus adjustment, controlling terminal only controls camera terminal and executes shooting action, without
Carry out focusing control.It the functions such as focused, taken pictures in conclusion the embodiment of the present invention realizes long-range control camera terminal,
And it can be operated according to live preview picture, improve focusing precision and quality of taking pictures, and fully considered bluetooth
Difference between the characteristics of transmission, picture resolution and resolution of screen, zooms in and out preview screen, improves data transmission
Speed.
Based on above method embodiment, the present invention also provides a kind of systems based on remote photographic focusing, comprising: control
Terminal 10 and camera terminal 20.
The controlling terminal 10 is connected for camera terminal 20, and is registered for handling 20 return data of camera terminal
Call back function；Start remote photographic application later, send shooting instruction to camera terminal 20 and inquires whether it supports focusing function
Energy.
The camera terminal 20 sends focus adjustment range and reality for opening shooting preview interface, and to controlling terminal
When preview screen.
The controlling terminal 10 is also used to be shown in preview interface for focusing according to the focus adjustment range
Operational controls.
The controlling terminal includes having mobile phone, tablet computer and intelligent wearable equipment of wireless transmission function etc.；Institute
Stating camera terminal includes that the digital camera for having wireless transmission function, smart phone, tablet computer, electronic reader and intelligence are worn
Wear formula equipment etc..The wireless transmission function includes bluetooth and WIFI etc..Controlling terminal by with camera terminal establish bluetooth or
WIFI connection obtains the result for whether supporting focusing function, focus adjustment range and live preview picture that camera terminal is passed back,
And then the operational controls of vision-control focal length and live preview picture is focused for user and shooting operation in controlling terminal,
To realize the long-range control to camera terminal, and by live preview picture and focus adjustment, shooting quality is improved, is had
Body please refers to above method embodiment.
Certainly, the controlling terminal can also remotely control camera terminal carry out except focusing, shooting in addition to movement, such as
The movement that camera terminal is operated can be directly controlled by opening flash lamp, video recording etc..
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (6)
1. a kind of method of remote photographic focusing, which comprises the steps of:
A, controlling terminal and camera terminal connect, and register the call back function for handling camera terminal return data, and shooting is eventually
End return data includes: the take pictures error code of failure, successful number of taking pictures, image echo；
B, controlling terminal starts remote photographic application, sends shooting instruction to camera terminal and inquires whether it supports focusing function
Can, corresponding result is fed back to controlling terminal by camera terminal；
C, camera terminal opens shooting preview interface, and sends focus adjustment range and live preview picture to controlling terminal；
D, controlling terminal shows the operational controls for focusing according to the focus adjustment range in its preview interface；
E, focus operations when controlling terminal receives operational controls described in user's operation instruct, and send to camera terminal and change focal length
Control instruction；
F, camera terminal returns to live preview picture according to the focal length of the control instruction setting camera for changing focal length
Controlling terminal；
G, controlling terminal receives the live preview picture and shows；
The step F is specifically included:
The focal length of camera is arranged according to the control instruction for changing focal length for F1, camera terminal；
F2, live preview picture is zoomed in and out according to the screen size of controlling terminal；
F3, the clarity for reducing live preview picture, and squeezed data；
F4, the picture data of compression is returned into controlling terminal；
In step f 4, the picture data of compression is returned to controlling terminal with the frequency of 3 frame per second by camera terminal.
2. the method for remote photographic focusing according to claim 1, which is characterized in that further include following steps:
H, controlling terminal sends photographing instruction to camera terminal and completes movement of taking pictures to control camera terminal.
3. the method for remote photographic according to claim 2 focusing, which is characterized in that further include after the step H as
Lower step:
I, camera terminal zooms in and out the image of shooting according to the screen size of controlling terminal；
J, the clarity of image is reduced, and compression of images is returned into controlling terminal and is shown.
4. the method for described in any item remote photographic focusing according to claim 1 ~ 3, which is characterized in that in the step A, control
Terminal processed establishes connection by bluetooth or WIFI and camera terminal.
5. the method for remote photographic focusing according to claim 4, which is characterized in that the step A is specifically included:
A1, controlling terminal send bluetooth online request to camera terminal；
A2, camera terminal are given and accepted the bluetooth online request, are opened the starting of BTNotification program and are monitored service；
A3, controlling terminal starting monitor service, and are used to handle the readjustment letter of camera terminal return data to monitoring service registration
Number.
6. a kind of system of the method for realizing remote photographic as described in any one in claim 1-5 focusing, feature exist
In, comprising: controlling terminal and camera terminal；
The controlling terminal for connecting with camera terminal, and registers the call back function for handling camera terminal return data；
Start remote photographic application, send shooting instruction to camera terminal and inquires whether it supports focusing function；
The camera terminal sends focus adjustment range and live preview for opening shooting preview interface, and to controlling terminal
Picture；
The controlling terminal is also used to show the operation for focusing in preview interface according to the focus adjustment range
Control.
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| CN201410416915.0A CN104184947B (en) | 2014-08-22 | 2014-08-22 | A kind of method and system of remote photographic focusing |
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| CN105554396A (en) * | 2016-01-29 | 2016-05-04 | 深圳市凯立德科技股份有限公司 | Focus distance adjusting method and device |
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| JP7071227B2 (en) * | 2018-06-21 | 2022-05-18 | キヤノン株式会社 | Electronic devices and their control methods |
| CN111212260B (en) * | 2018-11-21 | 2021-08-20 | 杭州海康威视数字技术股份有限公司 | Method and device for drawing lane line based on surveillance video |
| CN112087572B (en) * | 2019-06-14 | 2022-10-11 | 北京小米移动软件有限公司 | Method and device for controlling zoom of lens, electronic equipment and readable storage medium |
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