CN105407259B - Virtual image capture method - Google Patents
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- CN105407259B CN105407259B CN201510837610.1A CN201510837610A CN105407259B CN 105407259 B CN105407259 B CN 105407259B CN 201510837610 A CN201510837610 A CN 201510837610A CN 105407259 B CN105407259 B CN 105407259B
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Abstract
The present invention relates to a kind of virtual image capture methods, this method comprises: building interactive virtual camera system；According to shooting demand, the type of virtual seat in the plane and the virtual camera used at selected virtual seat in the plane is selected；The camera parameter of selected virtual camera is configured, is shot in 3 D stereo scene using selected virtual camera, and the shooting action of selected virtual camera is controlled in shooting process；The picture that selected virtual camera is taken renders framed sequence, and the picture after rendering is exported.The present invention can carry out different virtual seat in the plane selections, the selection of virtual camera type, just the shooting effect under different selections is obtained, reference frame is provided for the shooting work under real scene, the risk of damage can be generated in multiple transhipment and installation process by reducing equipment, it improves work efficiency and quality, reduces shooting cost and time cost.
Description
Technical field
The present invention relates to simulation technical fields, and in particular to a kind of virtual image capture method.
Background technique
Utilization of the video camera in large-scale square is rehearsed has welcome new change, comprehensive, three-dimensional dynamic, large-scale row
Drilling scene makes single kind video camera and small-scale shooting visual angle can not meet the demand that nowadays large-scale square is rehearsed.It is complete
The shooting and relay in orientation, multi-angle need for video camera to be placed on different positions, different angle.In order to from each angle exhibition
The program and content that existing large size square is rehearsed, need to use fixed point video camera, rocker arm video camera, orbit camera and the camera shooting of winged cat
Machine etc..These equipment are various and complicated operation, and volume and weight is very big, it usually needs very skilled photographer's ability
Operation.However, it is also desirable to which photographer rehearses in advance repeatedly just can guarantee the set effect and quality of camera shooting.
It is rehearsed for large-scale square, existing style of shooting is still that need to be carried out multiple using traditional image pickup method
Shooting and equipment debugging on the spot, and these accurate and complicated equipment are possible to during multiple transhipment and installation
Damage can be generated, working efficiency is lower, shoots higher cost.
Summary of the invention
The technical problems to be solved by the present invention are: need repeatedly to debug on the spot in the prior art before shooting, so that
Equipment has damage risk, and working efficiency is low, at high cost.
In order to solve the above technical problems, the invention proposes virtual image pickup methods.
This method comprises:
Construct interactive virtual camera system, in which:
It include the 3 D stereo scene in place to be captured, the 3 D stereo scene in the interactive virtual camera system
In be provided with multiple virtual seats in the plane, the virtual camera of at least one type is provided at each virtual seat in the plane；
According to shooting demand, the type of virtual seat in the plane and the virtual camera used at selected virtual seat in the plane is selected；
The camera parameter of selected virtual camera is configured, using selected virtual camera in the 3 D stereo field
It is shot in scape, and the shooting action of selected virtual camera is controlled in shooting process；
The picture that selected virtual camera is taken renders framed sequence, and the picture after rendering is exported.
It optionally, further include man-machine interactive platform in the interactive virtual camera system；
The building interactive virtual camera system, comprising:
The 3 D stereo scene in place to be captured is established using graphics Simulation engine；
File is set using man-machine interactive platform creation virtual camera, includes more in the virtual camera setting file
The type of each virtual camera and the initial configuration of each virtual camera ginseng at a virtual seat in the plane, each virtual seat in the plane
Number；
The human-computer interaction interface of the video camera setting file and the human-computer exchange platform is loaded onto the three-dimensional figure
In shape simulation engine, the interactive virtual camera system is constituted.
Optionally, the type of the selection virtual seat in the plane and the virtual camera used at selected virtual seat in the plane, comprising:
Using man-machine interactive platform in the 3 D stereo scene, selects virtual seat in the plane and make at selected virtual seat in the plane
The type of virtual camera.
Optionally, the camera parameter to selected virtual camera configures, comprising:
Camera parameter transmitted by man-machine interactive platform is resolved using the graphics Simulation engine, and according to
Calculation result configures the camera parameter of selected virtual camera, in which:
Camera parameter transmitted by the man-machine interactive platform is the input equipment that user passes through the man-machine interactive platform
The camera parameter inputted.
It is optionally, described that the shooting action of selected virtual camera is controlled in shooting process, comprising:
The graphics Simulation engine monitors the movement of bar distant in external control device, and distant to what is listened to
Bar acts generated data and is resolved, and the shooting action of selected virtual camera is controlled according to calculation result.
Optionally, graphics Simulation engine data caused by acting to the distant bar listened to carry out resolving it
Before, further includes:
Generated data are acted to distant bar to be smoothed.
Optionally, the quantity of selected virtual seat in the plane has multiple；
The picture rendering framed sequence that selected virtual camera is taken, comprising:
Using multithreading rendering method to picture taken by multiple virtual cameras in all selected virtual cameras
Face is rendered simultaneously.
Optionally, the picture by after rendering exports, comprising:
After the completion of the picture rendering taken to multiple virtual cameras, exported simultaneously in the form of multiwindow.
Optionally, wash with watercolours is being carried out to picture taken by multiple virtual cameras using multithreading rendering method
During dye, the frame sequence that each virtual camera rendering generates is stored using buffering queue.
Optionally, the picture by after rendering exports, comprising:
Picture after rendering is exported with two-dimensional model or three dimensional pattern.
In virtual image pickup method provided by the invention, the 3 D stereo scene in place to be captured is constructed using emulation technology,
Virtual camera is set under the 3 D stereo scene, is exported using virtual camera shooting picture, and by the picture of shooting.?
There are multiple virtual seats in the plane in 3 D stereo scene, and have the virtual camera of multiple types on each virtual seat in the plane, work people
Member can carry out different virtual seat in the plane selections, the selection of virtual camera type, just obtain the shooting effect under different selections.By
This, provides reference frame for the shooting work under real scene.Since staff can attempt the effect of the shooting under different selections
Fruit reduces the debugging work load shot on the spot, also reduces these accurate and complexity equipment and transports and installed repeatedly
Cheng Zhonghui generates the risk of damage, improves the working efficiency and quality of shooting, reduces shooting cost and time cost.
Detailed description of the invention
Can be more clearly understood characteristic information and advantage of the invention by reference to attached drawing, attached drawing be schematically without
It is interpreted as carrying out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 shows the flow diagram of virtual one embodiment of image capture method according to the present invention；
Fig. 2 shows the flow diagrams of another embodiment of virtual image capture method according to the present invention；
Fig. 3 shows a kind of flow diagram that shooting work is carried out using interactive virtual camera system.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The present invention provides a kind of virtual image capture method, as described in Figure 1, this method comprises:
S101, interactive virtual camera system is constructed, includes place to be captured in the interactive virtual camera system
3 D stereo scene is provided with multiple virtual seats in the plane in the 3 D stereo scene, be provided at each virtual seat in the plane to
Few a type of virtual camera；
S102, according to shooting demand, select the class of virtual seat in the plane and the virtual camera used at selected virtual seat in the plane
Type；
S103, the camera parameter of selected virtual camera is configured, using selected virtual camera in the three-dimensional
It is shot in stereo scene, and the shooting action of selected virtual camera is controlled in shooting process；
S104, the picture for taking selected virtual camera render framed sequence, and the picture after rendering is exported.
In virtual image capture method provided by the invention, the 3 D stereo scene in place to be captured is constructed using emulation technology,
Virtual camera is set under the 3 D stereo scene, is exported using virtual camera shooting picture, and by the picture of shooting.?
There are multiple virtual seats in the plane in 3 D stereo scene, and have the virtual camera of multiple types on each virtual seat in the plane, work people
Member can carry out different virtual seat in the plane selections, the selection of virtual camera type, just obtain the shooting effect under different selections.By
This, provides reference frame for the shooting work under real scene.In this case, it can reduce the debugging work load shot on the spot,
The risk of damage can be generated in multiple transhipment and installation process by also reducing these accurate and complicated equipment, improve shooting
Working efficiency and quality, reduce shooting cost, since staff can attempt the shooting effect under different selections,
Reduce time cost and equipment transhipment dismounting risk.
It is understandable to be, it before the 3 D stereo scene for constructing place to be captured, needs to carry out on-the-spot investigation, obtains
The related data in place to be captured, such as the correlation of depth of building, vegetative coverage area, road width or other common equipments
Data.
Understandable to be, so-called virtual seat in the plane refers to the different location in 3 D stereo scene, such as a gift
In the 3 D stereo scene of hall, auditorium, rostrum etc. can place the position of video camera.
Understandable to be, the type of virtual camera is identical as the type of entity video camera, there is fixed point video camera, rocker arm
Video camera, flies multiple types such as cat video camera at orbit camera.
Understandable to be, virtual image pickup method provided by the invention is not limited to large-scale square performance, in training of taking photo by plane, number
The production of word film, digital stage shooting etc. are with a wide range of applications and commercial value.
It is being embodied, the 3 D stereo scene in place to be captured is established described in step S101, may include:
It further include man-machine interactive platform in the interactive virtual camera system；
The building interactive virtual camera system, comprising:
The 3 D stereo scene in place to be captured is established using graphics Simulation engine；
File is set using man-machine interactive platform creation virtual camera, includes more in the virtual camera setting file
The type of each virtual camera and the initial configuration of each virtual camera ginseng at a virtual seat in the plane, each virtual seat in the plane
Number；
The human-computer interaction interface of the video camera setting file and the human-computer exchange platform is loaded onto the three-dimensional figure
In shape simulation engine, the interactive virtual camera system is constituted.
Here a kind of embodiment for establishing interactive virtual camera system is provided, constructs the three of place to be captured first
Stereo scene is tieed up, is then realized by way of loading associated documents and loads various types in the different location of 3 D stereo scene
The human-computer interaction interface of man-machine interactive platform is loaded onto graphics Simulation engine, realizes by the purpose of virtual camera
The subsequent purpose that virtual camera in scene can be controlled by man-machine interactive platform, the beam worker before finishing man-machine interaction
Make.
It is understandable to be, the interactive interface of man-machine interactive platform can be created by modes such as Flash, Scaleform.
Video camera setting file can be XML format file.
In the specific implementation, the virtual seat in the plane of selection described in step S102 and what is used at selected virtual seat in the plane virtually take the photograph
The type of camera may include:
Using man-machine interactive platform in the 3 D stereo scene, selects virtual seat in the plane and make at selected virtual seat in the plane
The type of virtual camera.
Here a kind of specific embodiment for selecting virtual seat in the plane and virtual camera type is provided.Can specifically it pass through
The mode of multistage pull-down menu realizes the selection of virtual seat in the plane and virtual camera type.When having selected certain type of virtually to take the photograph
After camera, which will be activated.
Optionally, the camera parameter of selected virtual camera is configured described in step S103, comprising:
Camera parameter transmitted by man-machine interactive platform is resolved using the graphics Simulation engine, and according to
Calculation result configures selected virtual camera, in which:
Camera parameter transmitted by the man-machine interactive platform is the input equipment that user passes through the man-machine interactive platform
The camera parameter inputted.
Here, the relevant parameter configured to virtual camera is that user is defeated by the input equipment of man-machine interactive platform
Enter.Input equipment therein, such as keyboard.
The parameters such as the camera parameter, such as position, posture, visual angle, focal length of user's input.
So-called resolving be identify these camera parameters such as the user position, posture, visual angle, the focal length that are inputted, and by this
A little camera parameters are converted to the identifiable parameter of virtual camera, such as space geometry, Eulerian angles, transformation matrix, optical path or sense
The parameters such as optical element size configure virtual camera using these parameters being converted into.
In the specific implementation, the shooting action of selected virtual camera is carried out in shooting process described in step S103
It controls, may include:
The graphics Simulation engine monitors the movement of bar distant in external control device, and distant to what is listened to
Bar acts generated data and is resolved, and the shooting action of selected virtual camera is controlled according to calculation result.
In shooting process due to video camera, it may be necessary to the depth of field of shooting, wide-angle, position etc. are adjusted, here
The shooting of virtual camera is adjusted using external control device.It is equipped with distant bar in the external control device, utilizes distant bar
Action control virtual camera shooting action.
For example, when swinging distant bar to the left, graphics Simulation engine listens to distant bar and acts, and to the movement institute
The data of generation are resolved, and learn that distant bar is swung to the left according to calculation result graphics Simulation engine, at this time 3-D graphic
Simulation engine controls current virtual camera and is moved to the left.
For another example when pressing distant bar downwards, graphics Simulation engine listens to distant bar and acts, and to the movement
Generated data are resolved, and learn that distant bar moves downward according to calculation result graphics Simulation engine, at this time three-dimensional figure
Shape simulation engine controls current virtual camera and increases the depth of field.
Understandable to be, external control device with graphics Simulation engine before interacting, it is also necessary to outside this
Control equipment is registered and is initialized in graphics Simulation engine.Before each update, all calling input function and monitorings
Monitoring and resolving to each data axially generated of external control devices may be implemented in function.
This distant bar by external control device the movements such as pushes away, draws, shakes, moves come the accurate control to virtual camera
System not only controls flexibly, conveniently, but also also enhances photographer to the proficiency of video camera track.
It is, of course, also possible to pass through the input equipment input control parameter of man-machine interactive platform, the shooting to virtual camera
Movement is controlled.It can be seen that the control action of external control device or the input equipment of man-machine interactive platform can be passed through
The virtual camera selected accurately is controlled.In addition, specific solution process can be by graphics Simulation engine
Data calculation module complete.By to the resolving in relation to parameter, may be implemented to the real-time control of virtual camera and movement,
The update etc. of parameter.
In the specific implementation, graphics Simulation engine data caused by acting to the distant bar listened to carry out
Before resolving, further includes:
Generated data are acted to distant bar to be smoothed.
It is smoothed this drop error mechanism using generated data are acted to distant bar, reduces external control dress
The sensitivity set prevents the shooting of virtual camera too sensitive, improves the accurate control to virtual camera.
In the specific implementation, the quantity of selected virtual seat in the plane has multiple；
At this point, may include: by the picture rendering framed sequence that selected virtual camera takes described in step S4
Using multithreading rendering method to picture taken by multiple virtual cameras in all selected virtual cameras
Face is rendered simultaneously.
Using this parallel processing technique of multithreading rendering method, the picture while wash with watercolours that taken to multiple virtual cameras
Dye, the frame per second and quality for substantially increasing picture real-time rendering are examined.
In the specific implementation, the picture by after rendering exports, and may include:
After the completion of the picture rendering taken to multiple virtual cameras, exported simultaneously in the form of multiwindow.
Picture is exported using multiwindow form, user is helped to understand the work that multiple virtual cameras are current in entire scene
State provides valuable reference to subsequent relay.
In the specific implementation, using multithreading rendering method to picture taken by multiple virtual cameras
During being rendered, it can use buffering queue and store the frame sequence that each virtual camera rendering generates.
Here the frame sequence generated using buffering queue storage to the rendering of picture captured by each virtual camera, can eliminate
The shake of video, so that video more smoothly links up.
In the specific implementation, the picture after rendering is exported described in step S104, may include:
Picture after rendering is exported with two-dimensional model or three dimensional pattern.
Since the frame sequence that rendering generates can be imaging format, it is also possible to 2D picture, is also possible to red indigo plant 3D picture,
It can also be right and left eyes 3D picture.Therefore it can meet different user's need by the picture after rendering with the output of 2D or 3D mode
It asks.
Certainly, other than to the picture output after rendering, preview or playback can also be carried out to picture.
So-called output can be and be exported while rendering, is also possible to the output carried out again after the completion of rendering.
As shown in Fig. 2, the present invention will be described by taking " XX triumph is rehearsed in the XX anniversary " as an example below:
S201, the geography information and facility related data at the scene of rehearsing are acquired；
S202,3 D stereo scene is established；
S203, man-machine interactive platform is designed；
S204, interactive virtual camera system is constructed using 3 D stereo scene and man-machine interactive platform, utilizes interactive mode
Virtual camera system carries out shooting work；
S204, the presentation that the multiple pictures taken are carried out to real-time rendering provide reference to relay；
S205, the picture after rendering is presented, provides visualization reference for the work of rehearsing for the personnel of rehearsing.
As shown in figure 3, below with a specific example to using interactive virtual camera system carry out shooting work say
It is bright:
S301, virtual seat in the plane is selected using man-machine interactive platform；
S302, the type for selecting virtual camera on selected virtual seat in the plane using man-machine interactive platform；
Virtual camera selected by S303, activation；
The camera parameter that S304, input set virtual camera；
S305, the distant bar for controlling external control device execute a certain movement；
S306, virtual camera parameter and shooting action are carried out using the data calculation module in graphics Simulation engine
It resolves, and virtual camera is configured and controlled to virtual camera according to calculation result and executes the shooting action.
Camera work can be carried out using virtual camera.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can not depart from this hair
Various modifications and variations are made in the case where bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of virtual image capture method characterized by comprising
Construct interactive virtual camera system, in which:
Include the 3 D stereo scene in place to be captured in the interactive virtual camera system, is set in the 3 D stereo scene
Multiple virtual seats in the plane are equipped with, the virtual camera of at least one type is provided at each virtual seat in the plane, is being constructed wait clap
It takes the photograph before the 3 D stereo scene in place, obtains the related data in place to be captured；
According to shooting demand, the type of virtual seat in the plane and the virtual camera used at selected virtual seat in the plane is selected；
The camera parameter of selected virtual camera is configured, using selected virtual camera in the 3 D stereo scene
It is shot, and the shooting action of selected virtual camera is controlled in shooting process, the camera parameter includes view
Angle and focal length；
The picture that selected virtual camera is taken renders framed sequence, and the picture after rendering is exported.
2. the method according to claim 1, wherein
It further include man-machine interactive platform in the interactive virtual camera system；
The building interactive virtual camera system, comprising:
The 3 D stereo scene in place to be captured is established using graphics Simulation engine；
File is set using man-machine interactive platform creation virtual camera, includes multiple void in the virtual camera setting file
The type of each virtual camera and the initial configuration parameters of each virtual camera at quasi- seat in the plane, each virtual seat in the plane；
The human-computer interaction interface of the video camera setting file and the human-computer exchange platform is loaded onto the 3-D graphic to imitate
In true engine, the interactive virtual camera system is constituted.
3. according to the method described in claim 2, it is characterized in that,
The type of the selection virtual seat in the plane and the virtual camera used at selected virtual seat in the plane, comprising:
Using the man-machine interactive platform in the 3 D stereo scene, selects virtual seat in the plane and make at selected virtual seat in the plane
The type of virtual camera.
4. according to the method described in claim 2, it is characterized in that,
The camera parameter to selected virtual camera configures, comprising:
Camera parameter transmitted by the man-machine interactive platform is resolved using the graphics Simulation engine, and according to
Calculation result configures selected virtual camera, in which:
Camera parameter transmitted by the man-machine interactive platform is defeated by the input equipment of the man-machine interactive platform for user
The camera parameter entered.
5. the method according to claim 1, wherein
It is described that the shooting action of selected virtual camera is controlled in shooting process, comprising:
The graphics Simulation engine monitors the movement of bar distant in external control device, and dynamic to the distant bar listened to
Data caused by making are resolved, and the shooting action of selected virtual camera is controlled according to calculation result.
6. according to the method described in claim 5, it is characterized in that,
Before graphics Simulation engine data caused by acting to the distant bar listened to resolve, further includes:
Generated data are acted to distant bar to be smoothed.
7. the method according to claim 1, wherein
The quantity of selected virtual seat in the plane has multiple；
The picture rendering framed sequence that selected virtual camera is taken, comprising:
It is same to picture taken by multiple virtual cameras in all selected virtual cameras using multithreading rendering method
Shi Jinhang rendering.
8. the method according to the description of claim 7 is characterized in that
The picture by after rendering exports, comprising:
After the completion of the picture rendering taken to multiple virtual cameras, exported simultaneously in the form of multiwindow.
9. the method according to the description of claim 7 is characterized in that
Using multithreading rendering method during being rendered to picture taken by multiple virtual cameras,
The frame sequence that each virtual camera rendering generates is stored using buffering queue.
10. the method according to claim 1, wherein
The picture by after rendering exports, comprising:
Picture after rendering is exported with two-dimensional model or three dimensional pattern.
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| CN103246992A (en) * | 2013-05-30 | 2013-08-14 | 叶旭东 | 3D (three-dimensional) house display system, on-line house display system and on-line house sales method |
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