CN102591366A - Method and device for controlling cloud deck - Google Patents
Method and device for controlling cloud deck Download PDFInfo
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Abstract
The invention provides a method and device for controlling a cloud deck. The method comprises the steps of: calculating a coordinate value of a target shooting object based on pre-set triggering operation of a user for the target shooting object in a video; regarding the pre-set triggering operation as one operation; obtaining current position and current zooming time of the cloud deck; calculating a target rotation angle and a target zooming time of the cloud deck based on the coordinate value of the target shooting object and the current position as well as the current zooming time of the cloud deck; converting the target rotation angle and the target zooming time of the cloud deck to a cloud deck control command and performing the cloud deck control command. The method and device for controlling the cloud deck, disclosed by the invention, have the advantages of simplifying operation for cloud deck movement and camera zooming, improving response speed to the operation of the cloud deck movement and the camera zooming and enabling the pictures shot by the cloud deck camera to be smoother and more coherent.
Description
Technical field
The application relates to the device of method and a kind of cradle head control of the technical field of cradle head control, particularly a kind of cradle head control.
Background technology
The Cloud Terrace is the fastening of installation, fixed cameras; It is divided into fixedly two kinds of The Cloud Terraces and motion The Cloud Terrace; Fixedly The Cloud Terrace is applicable to the situation that monitoring range is little; Can adjust the level of video camera and the angle of pitching after on fixing The Cloud Terrace, installing video camera, reach after the best operating attitude as long as the locking adjusting mechanism is just passable.The motion The Cloud Terrace is applicable to that it can enlarge the monitoring range of video camera to carrying out scanning monitoring on a large scale.Motion The Cloud Terrace high speed attitude is to be realized by two operating motors, and motor accepts the signal of self-controller accurately to move the location.Under the effect of control signal, but both autoscan monitor area of the video camera on the The Cloud Terrace also can be traced and monitored object under the operator on duty's of Surveillance center manipulation.In the application of many video conferences, remote teaching, video monitoring, the motion The Cloud Terrace has obtained application more and more widely.
At present; The control of The Cloud Terrace normally adopts the monopod video camera Control Software to carry out; Generally speaking, the monopod video camera Control Software all can provide the interface of video transmission, promptly on the interface of monopod video camera Control Software, presents the content of shot by camera; The user clicks on video through mouse or drag operation is controlled the rotation of The Cloud Terrace, and the angle of rotation can be calculated according to the correlation parameter of The Cloud Terrace; The user usually also need be through clicking preset zoom option or the sliding mouse roller is controlled the monopod video camera zoom, yet the zoom multiple can not be by the parameter determining of The Cloud Terrace self, so often need artificial Attended Operation.
Existing cradle head control needs the user separately The Cloud Terrace to be moved with the video camera zoom to operate; Comparatively loaded down with trivial details; And can't accurately estimate the zoom multiple that needs, in reality, possibly need repeatedly adjustment could accomplish zoom, making The Cloud Terrace move with the video camera zoom can't carry out simultaneously; Be The Cloud Terrace move and two motions of video camera zoom between can produce significantly at interval, this picture that will cause taking is level and smooth inadequately, link up.When the specific demand, for example in the middle and primary schools classroom, the student generally is no more than 5 seconds at time of answering a question of standing up, and uses above mode of operation also not wait to reserve the camera lens student and just sat down.
Therefore; Need the urgent technical matters that solves of those skilled in the art to be exactly at present: how creatively to propose a kind of cloud platform control method and device; Move the operation with the video camera zoom in order to simplify The Cloud Terrace; The raising The Cloud Terrace moves the response speed with the video camera zoom operation, and the picture that monopod video camera is taken is more level and smooth, coherent.
Summary of the invention
The application's technical matters to be solved provides a kind of method of cradle head control; Move the operation with the video camera zoom in order to simplify The Cloud Terrace; The raising The Cloud Terrace moves the response speed with the video camera zoom operation, and the picture that monopod video camera is taken is more level and smooth, coherent.
The application also provides a kind of device of cradle head control, in order to guarantee application and the realization of said method in reality.
In order to address the above problem, the application discloses a kind of method of cradle head control, specifically can comprise:
According to the preset trigger action of user, calculate the coordinate figure that said target is taken thing to target shooting thing in the video; Said preset trigger action is single job;
Obtain the current location and the current zoom multiple of The Cloud Terrace;
According to the coordinate figure of said target shooting thing, the current location of The Cloud Terrace and current zoom multiple, the target rotation angle and the target zoom multiple of calculating The Cloud Terrace;
Convert the target rotation angle and the target zoom multiple of said The Cloud Terrace into the cradle head control instruction, and carry out said cradle head control instruction.
Preferably,,, can also comprise before the step of the coordinate figure of calculating target shooting thing according to the preset trigger action of user said to target shooting thing in the video:
Catch the real-time video of monopod video camera, and present said video in the interactive terminal.
Preferably, the coordinate figure of said target shooting thing is that said target is taken the coordinate figure of thing with respect to the current video image central point; The current location of said The Cloud Terrace comprises current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.
Preferably, said coordinate figure according to target shooting thing, the current location of The Cloud Terrace and current zoom multiple, calculating the target rotation angle of The Cloud Terrace and the step of target zoom multiple can comprise:
Take the coordinate figure and the current zoom multiple of The Cloud Terrace of thing according to target, the calculating The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle;
The horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle, calculate the target rotation angle of The Cloud Terrace, said target rotation angle comprises target level absolute angle and the vertical absolute angle of target;
Calculate the horizontal range that target is taken thing according to the vertical absolute angle of said target;
Take horizontal range and the preset autozoom algorithm slope and the target zoom multiple of intercept calculating The Cloud Terrace of thing according to said target.
That preferably, can adopt that following formula calculates The Cloud Terrace horizontally rotates relative angle and vertical rotation relative angle:
Horizontally rotate relative angle P "=X/W*AH/Z ';
Vertical rotation relative angle T "=Y/H*AV/Z ';
Wherein, X, Y are that target is taken the coordinate figure of thing with respect to the current video image central point; The resolution that video shows is W*H, and AH is a monopod video camera maximum horizontal visible angle, and AV is a monopod video camera maximum perpendicular visible angle, and Z ' is the current zoom multiple of The Cloud Terrace;
And/or,
Can adopt following formula to calculate the target level absolute angle and the vertical absolute angle of target of The Cloud Terrace:
Target level absolute angle P=P '+P ";
The vertical absolute angle T=T ' of target+T ";
Wherein, P ' is the current horizontal absolute angle of The Cloud Terrace, P " is the relative angle that horizontally rotates of The Cloud Terrace; T ' is the current vertical rotation relative angle of The Cloud Terrace, and T " is the vertical rotation relative angle of The Cloud Terrace;
And/or,
Can adopt following formula to calculate the horizontal range that target is taken thing:
D＝SH*tan(90+T)；
Wherein, SH is the height of The Cloud Terrace with respect to target shooting thing surface level, and T is the vertical absolute angle of target;
And/or,
Can adopt following formula to calculate the target zoom multiple of The Cloud Terrace:
Z＝B+K*D；
Wherein, B is the intercept of autozoom algorithm, and K is the slope of autozoom algorithm, and D is the horizontal range that target is taken thing.
Horizontal visible angle when preferably, said monopod video camera maximum horizontal visible angle AH is 1 times of zoom of monopod video camera; Said monopod video camera maximum perpendicular visible angle AV can calculate through following formula and obtain:
AV＝AH*H/W；
Wherein, AH is a monopod video camera maximum horizontal visible angle, and the resolution that video shows is W*H.
The application also discloses a kind of device of cradle head control simultaneously, specifically can comprise:
The event capturing module is used for the preset trigger action to video target shooting thing according to the user, calculates the coordinate figure that said target is taken thing; Said preset trigger action is single job;
The Cloud Terrace current state enquiry module is used to obtain the current location and the current zoom multiple of The Cloud Terrace;
The Cloud Terrace object run computing module is according to the coordinate figure of said target shooting thing, the current location of The Cloud Terrace and current zoom multiple, the target rotation angle and the target zoom multiple of calculating The Cloud Terrace;
The cradle head control module is used for converting the target rotation angle and the target zoom multiple of said The Cloud Terrace into the cradle head control instruction, and carries out said cradle head control instruction.
Preferably, described device can also comprise:
Video represents module, is used to catch the real-time video of monopod video camera, and presents said video in the interactive terminal.
Preferably, the coordinate figure of said target shooting thing is that said target is taken the coordinate figure of thing with respect to the current video image central point; The current location of said The Cloud Terrace can comprise current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.
Preferably, said The Cloud Terrace object run computing module can comprise:
Rotate the relative angle calculating sub module, be used for taking the coordinate figure and the current zoom multiple of The Cloud Terrace of thing according to target, the calculating The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle;
Rotate the absolute angle calculating sub module; Be used for the horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle, calculate the target rotation angle of The Cloud Terrace, said target rotation angle comprises target level absolute angle and the vertical absolute angle of target;
Target level distance calculation submodule is used for calculating the horizontal range that target is taken thing according to the vertical absolute angle of said target;
Target zoom multiple calculating sub module is used for taking according to said target horizontal range and the preset autozoom algorithm slope and the target zoom multiple of intercept calculating The Cloud Terrace of thing.
Compared with prior art, the application has the following advantages:
The application embodiment is through once taking the preset trigger action of thing to target; Like a mouse click; Can realize that The Cloud Terrace moves, carry out zoom the time; Simplify The Cloud Terrace greatly and moved the operation with the video camera zoom, if the application embodiment is applied on touch-screen or the electronic white board equipment, will be directly perceived more and quick.The computation complexity of this method is low, and response speed is fast, can trigger The Cloud Terrace immediately and move the execution with the video camera zoom operation, and the picture that monopod video camera is taken is more level and smooth, coherent.In reality, if the movement velocity of The Cloud Terrace equipment is set to higher value, accomplish motion to The Cloud Terrace from target detection again to response user operation so, whole process can be above 1 second even lower.And the application embodiment cost is lower, need not extra installation, does not need extra system and equipment to realize video-see.
Description of drawings
Fig. 1 is the flow chart of steps of a kind of cloud platform control method embodiment of the application;
Fig. 2 is the synoptic diagram of operation interface state A in the concrete a kind of example used of the application embodiment;
Fig. 3 is the synoptic diagram of operation interface state B in the concrete a kind of example used of the application embodiment;
Fig. 4 is the synoptic diagram of operation interface state C in the concrete a kind of example used of the application embodiment;
Fig. 5 is the interface synoptic diagram of user's clicking operation in the concrete a kind of example used of the application embodiment;
Fig. 6 is the synoptic diagram that the The Cloud Terrace that calculated in the concrete a kind of example used of the application embodiment and target are taken the correlation parameter between thing;
Fig. 7 is the structured flowchart of a kind of tripod head controlling device embodiment of the application.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can be more obviously understandable, the application is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
One of core idea of the application embodiment is, the The Cloud Terrace operation steps is optimized, and makes that The Cloud Terrace moves, the two steps operation of zoom becomes single stepping, and the The Cloud Terrace that refers to here operation is based on that video is clicked or other any operations that can make The Cloud Terrace rotate.
With reference to figure 1, show the flow chart of steps of method embodiment of a kind of cradle head control of the application, specifically can may further comprise the steps:
Wherein, said preset trigger action is single job.
In reality; The real-time video of monopod video camera can appear on the interactive terminal; And offer user's application program operating interface (API); Said interactive terminal can show taken real-time video for a display screen (like computer monitor or touch display devices etc.), and the user then can carry out cradle head control through said application programming interfaces.
The user can take thing to target in interactive terminal institute picture displayed; Preset trigger action like someone or certain thing, in the application embodiment, said preset trigger action is based on video and clicks perhaps other any operations that The Cloud Terrace is rotated; Said preset trigger action is merely single job; Like the user click mouse, click touch-screen or press certain specified button etc., control The Cloud Terrace through the click video and rotate and need not the user, click again or control the video camera zoom through mouse roller; Thereby the application embodiment can simplify user's operation greatly, effectively promotes user's experience.
Target is taken the preset trigger action of thing through the response user; Obtain the position that the user operates through the API of system on the interactive terminal; In a kind of preferred embodiment of the application; Said target is taken the coordinate figure of thing can take the coordinate figure of thing with respect to the current video image central point for said target, usually with (X, Y) expression.
Before the target rotation position and target zoom multiple of calculating The Cloud Terrace, at first need inquire about the current location and the current zoom multiple of The Cloud Terrace.In concrete the realization, the current location of said The Cloud Terrace can comprise current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.Need to prove that the rotation control of The Cloud Terrace has relative angle and two kinds of control modes of absolute angle, absolute angle is the angle with respect to 0 of The Cloud Terrace, i.e. initial angle.Relative angle is the angle with respect to current location.In this step, be meant absolute angle.
In a kind of preferred embodiment of the application, said step 103 specifically can comprise following substep:
Substep S1, take the coordinate figure of thing and the current zoom multiple of The Cloud Terrace according to target, that calculates The Cloud Terrace horizontally rotates relative angle and vertical rotation relative angle;
As the concrete a kind of example used of present embodiment, that can adopt that following formula calculates The Cloud Terrace horizontally rotates relative angle and vertical rotation relative angle:
Horizontally rotate relative angle P "=X/W*AH/Z ';
Vertical rotation relative angle T "=Y/H*AV/Z ';
Wherein, X, Y are that target is taken the coordinate figure of thing with respect to the current video image central point; The resolution that video shows is W*H, and AH is a monopod video camera maximum horizontal visible angle, and AV is a monopod video camera maximum perpendicular visible angle, and Z ' is the current zoom multiple of The Cloud Terrace;
Horizontal visible angle when more preferably, said monopod video camera maximum horizontal visible angle AH is 1 times of zoom of monopod video camera; Said monopod video camera maximum perpendicular visible angle AV calculates through following formula and obtains:
AV＝AH*H/W；
Wherein, AH is a monopod video camera maximum horizontal visible angle, and the resolution that video shows is W*H.
Substep S2, the horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle; Calculate the target rotation angle of The Cloud Terrace, said target rotation angle comprises target level absolute angle and the vertical absolute angle of target;
As the concrete a kind of example used of present embodiment, can adopt following formula to calculate the target level absolute angle and the vertical absolute angle of target of The Cloud Terrace:
Target level absolute angle P=P '+P ";
The vertical absolute angle T=T ' of target+T ";
Wherein, P ' is the current horizontal absolute angle of The Cloud Terrace, P " is the relative angle that horizontally rotates of The Cloud Terrace; T ' is the current vertical rotation relative angle of The Cloud Terrace, and T " is the vertical rotation relative angle of The Cloud Terrace;
Substep S3, calculate the horizontal range that target is taken thing according to the vertical absolute angle of said target;
As the concrete a kind of example used of present embodiment, can adopt following formula to calculate the horizontal range that target is taken thing:
D＝SH*tan(90+T)；
Wherein, SH is the height of The Cloud Terrace with respect to target shooting thing surface level, and T is the vertical absolute angle of target;
Substep S4, take horizontal range and the preset autozoom algorithm slope of thing and the target zoom multiple that intercept is calculated The Cloud Terrace according to said target.
As the concrete a kind of example used of present embodiment, can adopt following formula to calculate the target zoom multiple of The Cloud Terrace:
Z＝B+K*D；
Wherein, B is the intercept of autozoom algorithm, and K is the slope of autozoom algorithm, and D is the horizontal range that target is taken thing.
Certainly, the aforementioned calculation method is only as example, and it all is feasible that those skilled in the art adopt any computing method according to actual conditions, and the application need not this to limit.
In reality, can convert above-mentioned parameter into cradle head control instruction according to the cradle head control agreement and issue The Cloud Terrace, The Cloud Terrace is instructed and is carried out that The Cloud Terrace rotates and the operation of video camera zoom.
For making those skilled in the art understand the application better, below be that example further specifies the application embodiment with common teaching scene.
Suppose to have the student on class, to raise one's hand to make a speech, need to carry out feature to this student immediately and take.Often need response speed faster under this situation, complicated complex operating steps is not suitable for using in this case, below will cooperate legend and computing formula whole process is described.
With reference to figure 2, Fig. 3 and Fig. 4, adopt prior art can experience state-transition process, wherein like said three width of cloth images from final effect; Fig. 2 corresponding states A, Fig. 3 corresponding states B, Fig. 4 corresponding states C; Carrying out The Cloud Terrace through the click operation during state A rotates; Obtain state B, carry out The Cloud Terrace zoom convergent-divergent through mouse action again, obtain state C.And adopt the application embodiment only to need a mouse-click operation directly to change state C into from state A.Original two steps operation is become single stepping, and the time-delay of having avoided two step operation rooms to produce has improved operation response speed, can catch moment quickly.
Below further specify the implementation procedure of the application embodiment:
Suppose autozoom algorithm slope K=0.2; Autozoom algorithm intercept B=1; The Cloud Terrace is taken height (The Cloud Terrace setting height(from bottom)) SH=1.8 (rice) of thing surface level with respect to target; Monopod video camera maximum horizontal visible angle AH=48 (angle), monopod video camera maximum perpendicular visible angle AV=36 (angle), the real-time video demonstration is of a size of W=320; H=240.
During state A, the user finds target, carries out clicking operation, and is as shown in Figure 5.Need to prove that the general computer interactive operation of equipment of above-mentioned clicking operation general reference is not limited to mouse action, can comprise equipment such as keyboard or touch-screen.
According to user's clicking operation, obtaining target, to take thing be (86 ,-54) with respect to the coordinate of central point (0,0) in image, i.e. X=86, Y=-54; Obtaining The Cloud Terrace current location and zoom multiple through query statement, is example with the Visca agreement, and query statement is 8X 09 06 12 ff 8X 09 04 47 ff, and X is an address code.Current location and the zoom multiple of supposing the acquisition The Cloud Terrace are P '=-20; T '=-15; Z '=1.
Calculate the angle that relatively rotates of The Cloud Terrace then, i.e. direction and the angle that need be rotated to the target location by current location of The Cloud Terrace is comprising "=X/W*AH/Z '=12.9 that horizontally rotate relative angle P; Vertical rotation relative angle T "=Y/H*AV/Z '=-8.1; Promptly turn right 12.9 the degree, change downwards 8.1 the degree.Through the target absolute angle that angle can calculate The Cloud Terrace that relatively rotates of The Cloud Terrace, P=P '+P "=-7.1; T=T '+T "=-23.1.
As shown in Figure 6, can calculate the horizontal range D=SH*tan (90+T)=7.74 that target is taken thing according to the current vertical absolute angle of target that reaches of The Cloud Terrace;
Draw the target zoom multiple Z=B+K*D=2.55 of The Cloud Terrace again through the linear change formula;
Net result is that P "=12.9; T "=-8.1; Z=2.55.Send The Cloud Terrace rotation command and The Cloud Terrace zoom instructions 8X 01 06 03 06 06 00 00 0a 0c 0f 0f 09 04 ff 8X 01 04 47 010c 0e 0f ff simultaneously.
At this moment, The Cloud Terrace has been carried out rotation and zoom action simultaneously, just directly converts state C into from state A.Only used single stepping, the centre is separated continuously, and response fast.
In concrete the realization, said autozoom algorithm slope K and autozoom algorithm intercept B can adopt following method to confirm: confirm the zoom multiple of target shooting thing on two different distance through manual work, calculate the value of K, B then.Be specially, after confirming to take the angle and best zoom multiple of first test point, obtain T1, Z1; Calculate D1=SH*tan (90+T1); Obtain equation (1) Z1=B+K*D1, in like manner obtain equation (2) Z2=B+K*D2, separate the value that this system of equations can obtain K, B.
In addition, the computing that above-mentioned use K, B do linear equation only be one of implementation for example, can certainly use more complicated mode such as nonlinear equation or piecewise function.And in calculating not necessarily indirectly service range D also can directly use the angle T and the P of The Cloud Terrace as the function of equation.
As the concrete a kind of example used of the application embodiment, the effective range of said autozoom algorithm intercept B value can be [18,18]; The zooming range that specifically depends on The Cloud Terrace; Preferably, the zone of reasonableness of said autozoom algorithm intercept B value can be [0,18]; The effective range of said autozoom algorithm slope K value can for (0 ,+∞], preferably, the zone of reasonableness of said autozoom algorithm slope K value can for (0,1].
Need to prove; For method embodiment, for simple description, so it all is expressed as a series of combination of actions; But those skilled in the art should know; The application does not receive the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the instructions all belongs to preferred embodiment, and related action and module might not be that the application is necessary.
With reference to figure 7, show the structured flowchart of device embodiment of a kind of cradle head control of the application, specifically can comprise like lower module:
Event capturing module 701 is used for the preset trigger action to video target shooting thing according to the user, calculates the coordinate figure that said target is taken thing; Said preset trigger action is single job;
The Cloud Terrace current state enquiry module 702 is used to obtain the current location and the current zoom multiple of The Cloud Terrace;
The Cloud Terrace object run computing module 703 is according to the coordinate figure of said target shooting thing, the current location of The Cloud Terrace and current zoom multiple, the target rotation angle and the target zoom multiple of calculating The Cloud Terrace;
Cradle head control module 704 is used for converting the target rotation angle and the target zoom multiple of said The Cloud Terrace into the cradle head control instruction, and carries out said cradle head control instruction.
In a kind of preferred embodiment of the application, can also comprise like lower module:
Video represents module, is used to catch the real-time video of monopod video camera, and presents said video in the interactive terminal.
In concrete the realization, said target is taken the coordinate figure of thing can take the coordinate figure of thing with respect to the current video image central point for said target; The current location of said The Cloud Terrace comprises current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.
In a kind of preferred embodiment of the application, said The Cloud Terrace object run computing module 703 specifically can comprise following submodule:
Rotate the relative angle calculating sub module, be used for taking the coordinate figure and the current zoom multiple of The Cloud Terrace of thing according to target, the calculating The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle;
Rotate the absolute angle calculating sub module; Be used for the horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle, calculate the target rotation angle of The Cloud Terrace, said target rotation angle comprises target level absolute angle and the vertical absolute angle of target;
Target level distance calculation submodule is used for calculating the horizontal range that target is taken thing according to the vertical absolute angle of said target;
Target zoom multiple calculating sub module is used for taking according to said target horizontal range and the preset autozoom algorithm slope and the target zoom multiple of intercept calculating The Cloud Terrace of thing.
As the concrete a kind of example used of the application embodiment, that can adopt that following formula calculates The Cloud Terrace horizontally rotates relative angle and vertical rotation relative angle:
Horizontally rotate relative angle P "=X/W*AH/Z ';
Vertical rotation relative angle T "=Y/H*AV/Z ';
Wherein, X, Y are that target is taken the coordinate figure of thing with respect to the current video image central point; The resolution that video shows is W*H, and AH is a monopod video camera maximum horizontal visible angle, and AV is a monopod video camera maximum perpendicular visible angle, and Z ' is the current zoom multiple of The Cloud Terrace;
And/or,
Can adopt following formula to calculate the target level absolute angle and the vertical absolute angle of target of The Cloud Terrace:
Target level absolute angle P=P '+P ";
The vertical absolute angle T=T ' of target+T ";
Wherein, P ' is the current horizontal absolute angle of The Cloud Terrace, P " is the relative angle that horizontally rotates of The Cloud Terrace; T ' is the current vertical rotation relative angle of The Cloud Terrace, and T " is the vertical rotation relative angle of The Cloud Terrace;
And/or,
Can adopt following formula to calculate the horizontal range that target is taken thing:
D＝SH*tan(90+T)；
Wherein, SH is the height of The Cloud Terrace with respect to target shooting thing surface level, and T is the vertical absolute angle of target;
And/or,
Can adopt following formula to calculate the target zoom multiple of The Cloud Terrace:
Z＝B+K*D；
Wherein, B is the intercept of autozoom algorithm, and K is the slope of autozoom algorithm, and D is the horizontal range that target is taken thing.
Horizontal visible angle when more preferably, said monopod video camera maximum horizontal visible angle AH is 1 times of zoom of monopod video camera; Said monopod video camera maximum perpendicular visible angle AV can calculate through following formula and obtain:
AV＝AH*H/W；
Wherein, AH is a monopod video camera maximum horizontal visible angle, and the resolution that video shows is W*H.
For device embodiment, because it is similar basically with method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
The application can be used in numerous general or special purpose computingasystem environment or the configuration.For example: personal computer, server computer, handheld device or portable set, plate equipment, multicomputer system, the system based on microprocessor, set top box, programmable consumer-elcetronics devices, network PC, small-size computer, mainframe computer, comprise DCE of above any system or equipment or the like.
The application can describe in the general context of the computer executable instructions of being carried out by computing machine, for example program module.Usually, program module comprises the routine carrying out particular task or realize particular abstract, program, object, assembly, data structure or the like.Also can in DCE, put into practice the application, in these DCEs, by through communication network connected teleprocessing equipment execute the task.In DCE, program module can be arranged in this locality and the remote computer storage medium that comprises memory device.
More than the method for a kind of cradle head control that the application provided and a kind of device of cradle head control have been carried out detailed introduction; Used concrete example among this paper the application's principle and embodiment are set forth, the explanation of above embodiment just is used to help to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to the application's thought, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. the method for a cradle head control is characterized in that, comprising:
According to the preset trigger action of user, calculate the coordinate figure that said target is taken thing to target shooting thing in the video; Said preset trigger action is single job;
Obtain the current location and the current zoom multiple of The Cloud Terrace;
According to the coordinate figure of said target shooting thing, the current location of The Cloud Terrace and current zoom multiple, the target rotation angle and the target zoom multiple of calculating The Cloud Terrace;
Convert the target rotation angle and the target zoom multiple of said The Cloud Terrace into the cradle head control instruction, and carry out said cradle head control instruction.
2. the method for claim 1 is characterized in that,,, also comprises before the step of the coordinate figure of calculating target shooting thing according to the preset trigger action of user to target shooting thing in the video said:
Catch the real-time video of monopod video camera, and present said video in the interactive terminal.
3. according to claim 1 or claim 2 method is characterized in that, the coordinate figure that said target is taken thing is that said target is taken the coordinate figure of thing with respect to the current video image central point; The current location of said The Cloud Terrace comprises current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.
4. method as claimed in claim 3 is characterized in that, said coordinate figure according to target shooting thing, the current location of The Cloud Terrace and current zoom multiple, calculate the target rotation angle of The Cloud Terrace and the step of target zoom multiple and comprise:
Take the coordinate figure and the current zoom multiple of The Cloud Terrace of thing according to target, the calculating The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle;
The horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle, the said target rotation angle of target rotation angle of calculating The Cloud Terrace comprises target level absolute angle and the vertical absolute angle of target;
Calculate the horizontal range that target is taken thing according to the vertical absolute angle of said target;
Take horizontal range and the preset autozoom algorithm slope and the target zoom multiple of intercept calculating The Cloud Terrace of thing according to said target.
5. method as claimed in claim 4 is characterized in that, that adopts that following formula calculates The Cloud Terrace horizontally rotates relative angle and vertical rotation relative angle:
Horizontally rotate relative angle P "=X/W*AH/Z ';
Vertical rotation relative angle T "=Y/H*AV/Z ';
Wherein, X, Y are that target is taken the coordinate figure of thing with respect to the current video image central point; The resolution that video shows is W*H, and AH is a monopod video camera maximum horizontal visible angle, and AV is a monopod video camera maximum perpendicular visible angle, and Z ' is the current zoom multiple of The Cloud Terrace;
And/or,
Adopt following formula to calculate the target level absolute angle and the vertical absolute angle of target of The Cloud Terrace:
Target level absolute angle P=P '+P ";
The vertical absolute angle T=T ' of target+T ";
Wherein, P ' is the current horizontal absolute angle of The Cloud Terrace, P " is the relative angle that horizontally rotates of The Cloud Terrace; T ' is the current vertical rotation relative angle of The Cloud Terrace, and T " is the vertical rotation relative angle of The Cloud Terrace;
And/or,
Adopt following formula to calculate the horizontal range that target is taken thing:
D＝SH*tan(90+T)；
Wherein, SH is the height of The Cloud Terrace with respect to target shooting thing surface level, and T is the vertical absolute angle of target;
And/or,
Adopt following formula to calculate the target zoom multiple of The Cloud Terrace:
Z＝B+K*D；
Wherein, B is the intercept of autozoom algorithm, and K is the slope of autozoom algorithm, and D is the horizontal range that target is taken thing.
6. method as claimed in claim 5 is characterized in that, the horizontal visible angle when said monopod video camera maximum horizontal visible angle AH is 1 times of zoom of monopod video camera; Said monopod video camera maximum perpendicular visible angle AV calculates through following formula and obtains:
AV＝AH*H/W；
Wherein, AH is a monopod video camera maximum horizontal visible angle, and the resolution that video shows is W*H.
7. the device of a cradle head control is characterized in that, comprising:
The event capturing module is used for the preset trigger action to video target shooting thing according to the user, calculates the coordinate figure that said target is taken thing; Said preset trigger action is single job;
The Cloud Terrace current state enquiry module is used to obtain the current location and the current zoom multiple of The Cloud Terrace;
The Cloud Terrace object run computing module is according to the coordinate figure of said target shooting thing, the current location of The Cloud Terrace and current zoom multiple, the target rotation angle and the target zoom multiple of calculating The Cloud Terrace;
The cradle head control module is used for converting the target rotation angle and the target zoom multiple of said The Cloud Terrace into the cradle head control instruction, and carries out said cradle head control instruction.
8. device as claimed in claim 7 is characterized in that, also comprises:
Video represents module, is used to catch the real-time video of monopod video camera, and presents said video in the interactive terminal.
9. like claim 7 or 8 described devices, it is characterized in that the coordinate figure that said target is taken thing is that said target is taken the coordinate figure of thing with respect to the current video image central point; The current location of said The Cloud Terrace comprises current horizontal absolute angle of The Cloud Terrace and vertical absolute angle.
10. device as claimed in claim 9 is characterized in that, said The Cloud Terrace object run computing module comprises:
Rotate the relative angle calculating sub module, be used for taking the coordinate figure and the current zoom multiple of The Cloud Terrace of thing according to target, the calculating The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle;
Rotate the absolute angle calculating sub module; Be used for the horizontal absolute angle and vertical absolute angle current according to said The Cloud Terrace; And; The Cloud Terrace horizontally rotate relative angle and vertical rotation relative angle, calculate the target rotation angle of The Cloud Terrace, said target rotation angle comprises target level absolute angle and the vertical absolute angle of target;
Target level distance calculation submodule is used for calculating the horizontal range that target is taken thing according to the vertical absolute angle of said target;
Target zoom multiple calculating sub module is used for taking according to said target horizontal range and the preset autozoom algorithm slope and the target zoom multiple of intercept calculating The Cloud Terrace of thing.
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