Summary of the invention
It is an object of the invention to the demands for HWIL simulation equipment in the virtualization production of existing film, propose oneKind film and tv photography semi-matter simulating system that is identical as true shooting operation, meeting photographer's operating habit, the system haveThe characteristics of high refresh rate, low latency, high-precision, strong antijamming capability.
In order to solve the above technical problems, achieving the object of the present invention, adopt the following technical scheme that
A kind of semi-matter simulating system of film and tv photography, including it is photographic goods model module, sensor and peripheral module, embeddingEnter formula module and display and control module；
Wherein, photographic goods model module specifically includes camera model, camera lens model, holder model；Camera modelInterface and embedded system module installation structure are installed including switch button；Camera lens model includes focal length ring, with burnt ring and lightRing；Holder model includes rolling structure and luffing structure again；
Wherein, sensor and peripheral module include that four encoders, two potentiometers, two rocking bars and five switches are pressedButton；
Embedded system module includes embedded system and circuit；
Display includes control unit, input unit, processing unit and display unit with hardware in control module；Processing is singleThe software run in member includes data processing plug-in unit and three dimentional graph display.
The connection relationship of each module is as follows in the digital camera dummy emulation system:
Photographic goods model module is connected with sensor and peripheral module, sensor and peripheral module and embedded system mouldBlock is connected, and embedded system module is connected with display with control module；
The installation process of each module is as follows in the digital camera dummy emulation system:
1) component based on photographic goods model module is installed, specifically: camera model is installed through switch button interfaceSwitch button；On camera lens model, an encoder A is mounted on focal length ring, another encoder A is mounted on on burnt ring, and oneA potentiometer is mounted on aperture ring；On holder model, an encoder B is mounted in rolling structure, another encoder BIt is mounted on luffing structure；Camera lens model is mounted on camera model, then camera lens model and camera model are integrally pacifiedOn holder model；
2) the focal length ring in camera lens model, focus ring, aperture ring add damping mechanism, simulate the behaviour of true photographic goodsMake feel；
3) sensor and peripheral module are wired to embedded system module；
4) embedded system module is fixed on camera model based on physics mode；
5) embedded system module is passed through wired or be wirelessly connected to display and control module.
The photographic goods model module is simulated and is emulated to true photographic goods；
The sensor and peripheral module obtain the motion information of photographic goods model module；
The signal of acquisition is converted into the data that display and control module can identify by the embedded system module；
The display obtains photography exercise data with control module, generates emulated interface using three dimentional graph display and showsShow.
The course of work of the semi-matter simulating system of the film and tv photography, includes the following steps:
Photographic goods model module is manually operated in step 1., so that focal length ring, focus ring and aperture on camera lens modelRing links two encoder A and potentiometer A movement respectively, and rolling structure and luffing structure on holder model link two respectivelyEncoder B movement.And operation button and rocking bar do corresponding sports；
Step 2. sensor and peripheral module obtain motion information, and motion information is converted to be transmitted to after electric signal it is embeddingEmbedded system module；
Wherein, the data of acquisition have following several respectively:
Angle, the angle of pitch axis, focal length, focal coordinates, aperture size, the angle of roll axis, the X-axis, Y-axis of axis of rollAnd Z axis coordinate and switch state；
The electric signal got from sensor and peripheral module is read out and is converted by step 3. embedded system moduleFor data, data type identifier is added in data to distinguish data type described in step 2.；
Data are transmitted to display and control module by wired or wireless mode by step 4. embedded system module；
Step 5. display obtains data with control module, and data are carried out simulation process；
Wherein, data processing has: the ratio conversion of axis of roll, pitch axis；Focal length, focus, three item data of aperture it is non-threadProperty transformation and ratio conversion；Roll axis, X-axis, Y-axis, the conversion of the ratio of Z axis；
Step 6. according to the movement of the data of acquisition analog camera in three dimentional graph display, three dimentional graph display according toThree-dimensional assets generate virtual emulation picture；
The display unit that virtual emulation picture is shown in display and control module is generated in step 7. three dimentional graph display.
Beneficial effect
A kind of semi-matter simulating system of film and tv photography has the following beneficial effects: compared with existing virtual camera work
1. realizing complete virtual camera function, the shape and operating habit of this system meet the true bat of video display workerTake the photograph habit, the more conducively upper hand operation of video display worker；
2. this system is extremely low compared to other mature virtual photographing system prices at present, reduces virtualization production work and carry outRequired cost；
3. use high-precision sensor, the data for getting video camera are more accurate so that virtually photograph it is more accurate andReally.
4. the preparation of system and erection work only need a small amount of time, cineaste can start rapidly the work virtually photographedMake；
5. the use of system and operation only need less space, virtual camera work can be carried out in more places.
When it is implemented, sensor and peripheral module include four encoders, two potentiometers, two rocking bars and fiveSwitch button；
The operating process of the film and tv photography semi-matter simulating system is as shown in Figure 2.
Fig. 2 is a kind of operational flowchart of the relied on system architecture of the semi-matter simulating system of film and tv photography described in Fig. 1.
It is connected from figure 2 it can be seen that photographic goods model module is based on physics transmission with sensor and peripheral module；It passesSensor and peripheral module and embedded system module are transmitted by signal to be connected；Embedded system module and display and control moduleIt is transmitted and is connected by data；Display and control module show the data that transmitting comes.
The fabrication and installation of the analogue system are again when it is implemented, as follows:
In this example, using the production of the processing methods such as 3D printing technique and computer numerical control mechanical manufacturing technology and veryReal video camera has the photographic goods model module of same operation structure；
Installation accuracy reaches the encoder of 36000 line/360 degree in system, and it is discernable that most situations already exceed peoplePrecision.Potentiometer precision is determined that it is 1024 subdivisions that potentiometer, which forms precision in range, by embedded system module, is able to satisfy itThe demand of corresponding function.Switch button is using commonly without lock button；
Embedded system module uses AduinoDUE, still has sufficiently high refresh rate when handling more data, is much higher thanThe frame rate of film is that 24 frames are per second and current mainstream computer screen refreshing rate 60Hz；
Display and control module are computer and its peripheral hardware, and wherein peripheral hardware includes main frame, display, mouseAnd keyboard；
The software run in computer has data processing plug-in unit, the illusory engine 4 of three dimentional graph display.
The action feature of the analogue system has the following:
(1) complete holder model possesses axis of roll and pitch axis, and holder in kind possesses damping, truly emulatesHolder operation；
(2) possess complete focal length ring, focus ring, aperture ring, and have and the consistent numerical non-linear of real cameraMapping, usage experience are truer；
(3) it can control travelling shot seat in the plane using rocking bar to set, it is a wide range of convenient for users to being completed in narrow spaceVirtual photography；
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hairEquivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skillsArt field, is included within the scope of the present invention.