CN105681638A - Controllable pitch angle panoramic photography system used for film virtual production - Google Patents
Controllable pitch angle panoramic photography system used for film virtual production Download PDFInfo
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- CN105681638A CN105681638A CN201610176820.5A CN201610176820A CN105681638A CN 105681638 A CN105681638 A CN 105681638A CN 201610176820 A CN201610176820 A CN 201610176820A CN 105681638 A CN105681638 A CN 105681638A
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- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/566—Accessory clips, holders, shoes to attach accessories to camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
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- Studio Devices (AREA)
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Abstract
The invention discloses a controllable pitch angle panoramic photography system used for film virtual production, belonging to the camera control technical field, and comprises a plurality of cameras and a panoramic photography system support. The panoramic photography system support comprises a foot rest, a holder, a multi-machine supporting plate, camera pitching adjusting components and camera fast-assembling components. The multi-machine supporting plate is fixed at the top end of the holder; the cameras, the fast-assembling components and the camera pitching adjusting components are successively in connection; the bottom of each set of camera pitching adjusting components is fixed on the multi-machine supporting plate; the pitching shooting angle of each camera is adjustable under the condition of not increasing system total resolution; the pitching shooting angle of each camera can be accurately and flexibly controlled according to camera positions, shooting scenes, etc., and thereby wider dynamic vertical visual angles can be obtained.
Description
Technical field
The present invention relates to a kind of panoramic shooting system, the panoramic shooting system at a kind of controllable pitch angle specifically, belong to camera and control technical field.
Background technology
Film virtualization makes the main development direction having become as future movie shooting technology, and the shooting technology of panorama background video becomes a technical difficult points needing solution badly.
Film virtualization manufacturing technology is that virtual photography, virtual product model, virtual role animation, the tracking of real-time camera, real-time rendering, the in real time technology such as synthesis and preview in real time are incorporated film making flow process, integrating traditional film making links, thus improving film production efficiency, realizing making the general name of all kinds of technology of the functions such as full-range emulation, preview, planning.
Development along with film shooting technology and computer scientific and technological level. It is increasing that digital special effect is produced in film making link proportion. Traditional film trick is that then the later stage is by scratching as synthesizing, or uses computer to carry out the creation of the drafting of background, three-dimensional character completely, finally synthesizes by shooting real background shooting prospect before green curtain or blue curtain. Traditional film special effect making mode cannot see, at floor, the picture that film is final, and the experience by creator in chief shoots before green curtain completely, can only find during the late stages of developmet if there is problem.
Virtualize scenery assets used in manufacturing process at film and mainly comprise three classifications: one is have, with theme being shot (performer), the scenery directly contacting or having hiding relation, the true scenery that this kind of scenery is usually in film studio is main, within the scope of main body 0-10 rice; Two is the virtual three-dimensional scenery set up by 3-D technology, and this kind of scenery is generally from main body 10-100 rice scope; Three is the two-dimensional background image obtained by pan-shot, this kind of scenery generally from main body distance more than 100 meters. This patent indication panoramic shooting system is for the shooting of the 3rd class assets.
Complete in film virtualization production process, panorama background video is for the preview of scene medium long shot scenery. Scape background video is generally adopted multiple stage camera and shoots simultaneously, utilizes later stage technology that multimachine picture is merged, spliced, thus obtaining complete full-view image.
Film virtualization makes the demand to panorama background video and generally includes:
24 frame dynamic image shooting abilities per second.
Unit shooting resolution is not less than 4K.
360 ° of horizontal view angle shootings can be realized.
Vertical angle of view is big as far as possible, minimum is not less than 45 °.
Angular resolution is not less than 45 pixels/degree.
Owing to film virtualization makes, panorama background had certain special demand, it is possible to according to its specific demand design technology project, thus obtaining optimized system.
Panorama background virtualizes the preview being mainly used in distant view in manufacturing process at film, analyzed above, scenery outside only about 100 meters just can use two-dimensional panoramic image, and the scenery within 100 meters is generally adopted virtual three-dimensional model or outdoor scene model. Based on this purposes, in full-view image shooting process, foreground object should be avoided, emphasis shooting distant view object as far as possible. If in occurring in full-view image picture, close shot object, in picture, close shot object can overlap with threedimensional model even outdoor scene model, the relation such as block, thus causing the mistake in perspective, and then affect preview effect.
In conventional levels shooting situation, horizon is in picture centre position, during the area of the horizon following above ground portion overwhelming majority is in, close shot scope, previews can not well be used, generally, in, close shot ground substitutes by three dimensional virtual models or outdoor scene in previews.
If only carrying out level shooting, namely luffing angle is non-adjustable, can cause the loss of two aspects: one is have the area close to half to be wasted in picture, it is impossible to directly apply to film shooting; Two is the effective vertical angle of view having a strong impact on whole system, causes the huge waste of vertical angle of view, there will be situation about can not all be recorded by the shooting body in some cases.
In order to solve problem above, two schemes can be adopted. The first scheme is under the premise keeping every camera level shooting, suitably increases camera quantity, namely increases panoramic shooting system entirety physical resolution, then takes the camera distribution mode being suitable for, thus obtaining broader vertical angle of view further. But the cost of this scheme is the increase in system complexity, reduces system reliability, adds system cost, add system bulk and weight, increase shooting difficulty. Simultaneously as still adopt level shooting, picture still has the content close to half be in two-shot, be non-serviceable, cause the waste of resource, so this scheme is not appropriate for the actual demand that film virtualization makes.
Namely scheme two is the thinking that the present invention proposes: be under the premise not increasing system total resolution, the tilt angle of each camera is become adjustable, make it according to the condition such as seat in the plane, photographed accurately, control flexibly, broader dynamic vertical visual angle can be obtained thus being equivalent to. This scheme is formulated for the specific demand of panorama background in making according to film virtualization, is not increasing on the basis of system complexity, it is possible to meet the shooting needs of filming shooting.
Summary of the invention
For background above, the invention provides a kind of controllable pitch angle panoramic shooting system made for film virtualization, 360 ° of horizontal view angles can be realized, horizontal and vertical angular resolution is not less than 45 pixels/degree, and do not increase camera quantity and meet minimum angular resolution premise under, realize camera shooting luffing angle adjustable, indirectly improve systematic vertical visual angle, thus meeting different film demand.
The invention provides a kind of controllable pitch angle panoramic shooting system made for film virtualization, including multiple stage camera, and panoramic shooting system frame;
Described panoramic shooting system frame includes: foot rest, The Cloud Terrace, many machine supporting plates, camera pitching adjust parts and camera fast-assembling parts;
The bottom of The Cloud Terrace is fixed on foot rest top and can horizontally rotate, many machine supporting plates are fixed on The Cloud Terrace top, camera fast-assembling parts include assembly A and the assembly B that can be fixed together, the bottom of every camera by the assembly A of chain joint assembly I and one group of camera fast-assembling parts fixing make between camera and assembly A cannot relative motion, and the assembly B of these group camera fast-assembling parts fixed by chain joint assembly II and one group of camera pitching adjustment parts; Often the bottom of group camera pitching adjustment parts is each attached on many machine supporting plates, and, the camera pitching of each group adjusts parts on many machine supporting plates around arranging; The often adjacent angle between two cameras main shaft is equal, and camera spacing should ensure that adjacent camera does not interfere with each other when pitching is moved, and can guarantee that the picture registration required by system simultaneously; Each camera has identical parameters and all camera lens is outwardly disposed;
Described camera pitching adjustment parts have luffing angle and show; And the adjustment plane of the angle of pitch is perpendicular to multimachine splint upper surface;
Described camera quantity should meet equation below:
360 ° of < camera unit horizontal resolution * camera quantity * (1-picture coincidence factor * 2) of smallest angular resolution * required by system;
The camera lens of described camera selects to meet following condition:
(-360 °, single-lens horizontal view angle/camera quantity)/single-lens horizontal view angle > picture coincidence factor;
Single-lens horizontal view angle after coordinating with camera is selected to calculate the tight shot of the single-lens horizontal view angle obtained more than or equal to foundation above formula.
Compared with prior art, the beneficial effects of the present invention is:
(1) only use 6 4K cameras can realize angular resolution more than resolution more than 45 pixels/spend, obtain 360 ° of horizontal view angles simultaneously.
(2) under the premise not increasing camera quantity, adjusting every camera machine shooting angle of pitch by unified, dynamic expands the vertical angle of view of panoramic shooting system, thus meeting different shooting demand.
(3) in panoramic shooting system, the relative position of different cameras all keeps fixing, when tilt angle multimachine is unified, fixing later stage multimachine picture fusion parameters can being adopted, thus greatly reducing later stage amount of calculation, improving production efficiency and quality.
Accompanying drawing explanation
Fig. 1 is an example structure schematic diagram of controllable pitch angle of the present invention panoramic shooting system;
Fig. 2 is the many machine supporting plates top view equipped with position, angle platform;
Fig. 3 is the oblique view of Fig. 2;
Fig. 4 is the assembling schematic diagram between camera and fast-assembling parts and position, angle platform;
Fig. 5 is the assembling schematic diagram between position, angle platform and fast-assembling parts;
Fig. 6 is the side view after installing multiple stage camera on many machine supporting plates;
Fig. 7 becomes to look up the schematic diagram of state after adjusting each camera pitch angle by position, angle platform;
Fig. 8 is the schematic diagram becoming vertical view state after adjusting each camera pitch angle by position, angle platform;
Fig. 9 is position, angle platform zero angle of pitch view;
Figure 10 is that position, angle platform adjusts angle of pitch view;
Figure 11 is the side view of position, angle platform zero angle of pitch state;
Wherein 1-camera, 2-foot rest, 3-The Cloud Terrace, the many machine supporting plates of 4-, 5-camera pitching adjust parts, 6-camera fast-assembling parts, 7-assembly A, 8-assembly B, 9-chain joint assembly I, 10-chain joint assembly II, 11-bolt, 12-upper plate, 13-lower plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail, also describe simultaneously technical solution of the present invention solve the technical problem that, principle and beneficial effect.
An embodiment as shown in Figure 1, the controllable pitch angle panoramic shooting system made for film virtualization provided by the invention includes multiple stage camera and panoramic shooting system frame;
Described panoramic shooting system frame includes: foot rest (2), The Cloud Terrace (3), many machine supporting plates (4), camera pitching adjust parts (5) and camera fast-assembling parts (6);
The bottom of The Cloud Terrace (3) is fixed on foot rest (2) top and can horizontally rotate that (foot rest, The Cloud Terrace can adopt third party device, primarily serve support, regulate the effect such as shooting height, adjustment level), many machine supporting plates (4) are fixed on The Cloud Terrace (3) top, and (many machine supporting plates play support, fix, connect the effect of 6 cameras, see Fig. 2 and Fig. 3), camera fast-assembling parts (6) includes assembly A (7) and the assembly B (8) that can be fixed together, plays the effect of fast assembling-disassembling camera; The bottom of every camera (1) fixes by the assembly A (7) of chain joint assembly I (9) and one group of camera fast-assembling parts (6) that make between camera and assembly A (7) cannot relative motion, and the assembly B (8) of this group camera fast-assembling parts (6) adjusts parts (5) by chain joint assembly II (10) with one group of camera pitching and fixes, and sees Fig. 4; Often the bottom of group camera pitching adjustment parts (5) is each attached on many machine supporting plates (4), and, respectively group camera pitching adjustment parts (5) arranges upper the surrounding of many machine supporting plates (4).
The often adjacent angle between two cameras main shaft is equal, and camera spacing should ensure that adjacent camera does not interfere with each other when pitching is moved, and can guarantee that the picture registration required by system simultaneously; Each camera has identical parameters and all camera lens is outwardly disposed; The camera pitching of each group adjusts parts (5) on many machine supporting plates (4) with The Cloud Terrace center for the center of circle, and camera main shaft is equiangularly spaced around arrangement, sees Fig. 2 and Fig. 3;
Described camera pitching adjustment parts (5) has luffing angle and shows (see Fig. 9 Figure 10 and Figure 11), and user can adjust angle accurately; And the adjustment plane of the angle of pitch is perpendicular to the upper surface of many machine supporting plates (4); Can independently regulate each camera tilt angle, according to shooting needs, when camera pitching adjustment parts (5) regulates the tilt angle of each camera, luffing angle adjusting range should be not less than ± 15 ° (see Fig. 6 Fig. 7 and Fig. 8). In the present embodiment, described camera pitching adjusts parts and adopts position, angle platform or ship type slide unit.
Described camera quantity should meet equation below:
360 ° of < camera unit horizontal resolution * camera quantity * (1-picture coincidence factor * 2) of smallest angular resolution * required by system;
The selection principle of camera described in embodiment is can to realize resolution to be not less than 4k (unit is pixel), and under the premise of the dynamic image shooting work of 24 frame progressive scans per second, selects the little lightweight model of volume as far as possible. So when picture coincidence factor being required for no less than the 15% of individual picture (requirement to picture coincidence factor of the general later stage fusion software), smallest angular resolution is 45 pixels/degree, and during unit horizontal resolution 4096, substituting into formula and obtain camera quantity more than 5.65, namely camera quantity is at least 6. Between every two cameras main shaft, angle is 60 °.
The camera lens of described camera selects to meet following condition:
(-360 °, single-lens horizontal view angle/camera quantity)/single-lens horizontal view angle > picture coincidence factor;
Single-lens horizontal view angle after coordinating with camera is selected to calculate the tight shot of the single-lens horizontal view angle obtained more than or equal to foundation above formula. The present embodiment can obtain single-lens horizontal view angle need to more than 70 °, so have only to select coordinate with camera after the horizontal view angle tight shot more than or equal to 70 °.
As preferably, it is vertical that camera optical axis adjusts unit shaft with camera pitching. It practice, do not calibrate during the assembling of position, angle platform and machine, it is not required that calibration, generally optical axis is vertical with the platform rotating shaft of position, angle, but not precision prescribed.
Further,
As preferably, in the present embodiment, adopting between chain joint assembly I (9) and camera (1) bottom surface at 2 and fix. Chain joint assembly I (9) is used for the assembly A (7) connecting camera (1) with camera fast-assembling parts (6), and, chain joint assembly I (9) is the protruding connecting plate matched with camera bottom surface detent with 1 bolt and 1, described bolt is through the assembly A (7) of this connecting plate and camera fast-assembling parts, and is fixed together in assembly A (7) and camera (1) bottom surface of connecting plate and camera fast-assembling parts; Described projection is placed in the detent of camera bottom surface. This is because after ordinary camera links with Quick-mounting board either directly through a bolt under normal circumstances, the possibility of rotation is still had between camera and Quick-mounting board, because being that single-point is fixed, and after invention increases chain joint assembly I, between chain joint assembly I (9) and camera fast-assembling parts (6) being at 2, fixing (namely a point is bolt, another point is a projection on chain joint assembly I and camera bottom surface detent), to ensure that camera positions completely.
In the present embodiment, see Fig. 4 and Fig. 5, chain joint assembly II (10) includes upper plate (12) and lower plate (13), the bottom surface of the assembly B (8) of described upper plate (12) and camera fast-assembling parts is fixed, the upper surface that lower plate (13) adjusts parts (5) with camera pitching is fixed, and the edge of upper plate (12) and lower plate (13) adopts bolt (11) to be fixed together. Chain joint assembly II (10) adopts the reason of upper plate and lower plate two pieces: because the third party's quick assembling unit being currently available can not directly link with slide unit (position, angle platform), so needing first to be linked with quick assembling unit by the upper plate (12) of chain joint assembly II (10), then the lower plate (13) connecting assembly II (10) is connect with position, the angle chain of stations, then again upper plate (12) and lower plate (13) two parts are linked together.
Many machine supporting plates have multiple hole on (4), for by cable etc.
After adopting the present invention, can under the premise not increasing system total resolution, the tilt angle of each camera is become adjustable so that it is according to the condition such as seat in the plane, photographed accurately, control flexibly, broader dynamic vertical visual angle can be obtained thus being equivalent to.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any people being familiar with this technology is in the technical scope that disclosed herein; it is appreciated that the conversion and replacement expected; what all should be encompassed in the present invention comprises within scope, and therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. the controllable pitch angle panoramic shooting system made for film virtualization, it is characterised in that include multiple stage camera and panoramic shooting system frame;
Described panoramic shooting system frame includes: foot rest (2), The Cloud Terrace (3), many machine supporting plates (4), camera pitching adjust parts (5) and camera fast-assembling parts (6);
The bottom of The Cloud Terrace (3) is fixed on foot rest (2) top and can horizontally rotate, many machine supporting plates (4) are fixed on The Cloud Terrace (3) top, camera fast-assembling parts (6) includes assembly A (7) and the assembly B (8) that can be fixed together, the bottom of every camera (1) fixes by the assembly A (7) of chain joint assembly I (9) and one group of camera fast-assembling parts (6) that make between camera and assembly A (7) cannot relative motion, and the assembly B (8) of this group camera fast-assembling parts (6) adjusts parts (5) by chain joint assembly II (10) with one group of camera pitching and fixes, often the bottom of group camera pitching adjustment parts (5) is each attached on many machine supporting plates (4), and, respectively group camera pitching adjustment parts (5) arranges upper the surrounding of many machine supporting plates (4).
The often adjacent angle between two cameras main shaft is equal, and camera spacing should ensure that adjacent camera does not interfere with each other when pitching is moved, and can guarantee that the picture registration required by system simultaneously; Each camera has identical parameters and all camera lens is outwardly disposed;
Described camera pitching adjustment parts (5) has luffing angle and shows; And the adjustment plane of the angle of pitch is perpendicular to the upper surface of many machine supporting plates (4);
Described camera quantity should meet equation below:
360 ° of < camera unit horizontal resolution * camera quantity * (1-picture coincidence factor * 2) of smallest angular resolution * required by system;
The camera lens of described camera selects to meet following condition:
(-360 °, single-lens horizontal view angle/camera quantity)/single-lens horizontal view angle > picture coincidence factor;
Single-lens horizontal view angle after coordinating with camera is selected to calculate the tight shot of the single-lens horizontal view angle obtained more than or equal to foundation above formula.
2. a kind of controllable pitch angle panoramic shooting system made for film virtualization according to claim 1, it is characterised in that adopt between chain joint assembly I (9) and camera (1) bottom surface 2 fixing.
3. according to claim 2 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterized in that, chain joint assembly I (9) is the protruding connecting plate matched with camera bottom surface detent with 1 bolt and 1, described bolt is through the assembly A (7) of this connecting plate and camera fast-assembling parts, and is fixed together in assembly A (7) and camera (1) bottom surface of connecting plate and camera fast-assembling parts; Described projection is placed in the detent of camera bottom surface.
4. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterized in that, chain joint assembly II (10) includes upper plate (12) and lower plate (13), the bottom surface of the assembly B (8) of described upper plate (12) and camera fast-assembling parts is fixed, the upper surface that lower plate (13) adjusts parts (5) with camera pitching is fixed, and the edge of upper plate (12) and lower plate (13) is adopted and is bolted together.
5. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterized in that, when picture coincidence factor being required for no less than the 15% of individual picture, smallest angular resolution is 45 pixels/degree, and during unit horizontal resolution 4096, camera quantity is at least 6.
6. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterized in that, the camera pitching of each group adjusts parts (5) on many machine supporting plates (4) with The Cloud Terrace center for the center of circle, and camera main shaft is equiangularly spaced around arrangement.
7. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterised in that described camera resolution is not less than 4k, and unit is pixel, and per second 24 frames progressive scan.
8. a kind of controllable pitch angle panoramic shooting system made for film virtualization according to claim 1, it is characterised in that described camera pitching adjusts parts (5) and adopts position, angle platform or ship type slide unit.
9. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterized in that, when camera pitching adjustment parts (5) regulates the tilt angle of each camera, luffing angle adjusting range should be not less than ± 15 °.
10. according to claim 1 a kind of for film virtualization make controllable pitch angle panoramic shooting system, it is characterised in that many machine supporting plates have multiple hole on (4).
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| CN113382138A (en) * | 2021-05-27 | 2021-09-10 | 曲阜师范大学 | Panoramic photography system for film production |
| CN113382138B (en) * | 2021-05-27 | 2022-03-15 | 曲阜师范大学 | Panoramic photography system for film production |
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