CN105469448B - A kind of special-shaped curtain Moviemaking method - Google Patents
A kind of special-shaped curtain Moviemaking method Download PDFInfo
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Abstract
The present invention relates to a kind of special-shaped curtain Moviemaking method, including：According to projected channel number, describe the shape of true special-shaped curtain using path tool subchannel, form vector grid：The vector grid is projected on true special-shaped curtain, according to the position relationship of the vector grid of projection and the true special-shaped curtain, adjusts the vector grid；The three-dimensional curtain body of true special-shaped curtain is established, texture mapping is carried out to three-dimensional curtain body with standard grid, at least one subregion is classified as, each subregion is converted into mesh and separated：Plane is created, the texture mapping using the vector network after adjustment as the plane, the mesh is adjusted and mesh is overlapped with the texture mapping of plane；Movie-movie as the texture mapping of the three-dimensional curtain body after adjustment and is rendered into output.Compared with prior art, the present invention has the advantages that simple, quick, adaptability is high, the not excessive limitation for building condition, software and hardware configuration condition by movie theatre in itself.
Description
Technical field
The present invention relates to a kind of method of video image processing, more particularly, to a kind of special-shaped curtain Moviemaking method.
Background technology
The making of existing special-shaped curtain film is mostly on the basis of film shoots or completed in advance according to special-shaped curtain shadow
The concrete condition of institute is processed making, and movie theatre in itself build mode, software and hardware configuration situation has very big relation.It is same
Film, which is wanted to show in different special-shaped screen cinemas, will often use different preparation methods, and part movie theatre is also equipped with specifically
Tools, this requires to provide film or have to be understood that various types of special-shaped screen cinemas and correlation using the personnel of film
Tools, very big operational difficulties are caused to related personnel.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of special-shaped curtain film system
Make method, this method is simple, quick, and adaptability is high, different from the curved surface adjustment instrument based on mathematical algorithm of routine, is not required to
Meet specific boundary condition, practicality height.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of special-shaped curtain Moviemaking method, for the movie-movie of common standard to be converted into the shadow suitable for special-shaped curtain
Piece, this method comprise the following steps：
1) according to projected channel number, describe the shape of true special-shaped curtain using path tool subchannel, form vector net
Lattice, the number of the vector grid are identical with actual projected channel number；
2) vector grid is projected on true special-shaped curtain, according to the vector grid of projection and the true special-shaped curtain
Position relationship, adjust the vector grid so that the vector grid actually projected is uniformly distributed and completely spliced；
3) the three-dimensional curtain body of true special-shaped curtain is established, the parameter of the three-dimensional curtain body is identical with true special-shaped curtain,
Texture mapping is carried out to three-dimensional curtain body with standard grid, three-dimensional curtain body is accordingly divided at least one subregion,
Each subregion is converted into mesh and separated, the number of the subregion is identical with actual projected channel number；
4) create with the resolution ratio ratio identical plane of movie-movie, using the vector network after being adjusted in step 2) as
The texture mapping of the plane, adjust the mesh and mesh and the texture mapping of the plane are overlapped；
5) movie-movie as the texture mapping of the three-dimensional curtain body after adjustment and is rendered into output.
Preferably, after the step 4), in addition to：
Increase fusion band dough sheet on the mesh, and gradual change texture mapping is accompanied by dough sheet.
Preferably, increase fusion band dough sheet on the mesh, and be accompanied by dough sheet after gradual change texture mapping,
Also include：
Free video camera is created, the window of the video camera is equal in magnitude with the plane.
Preferably, before the step 5), in addition to：
Single frames exports preview and finely tunes grid.
Preferably, when carrying out preview, the spectators' viewpoint cameras pre-set in vivo by three-dimensional curtain carries out preview.
Preferably, the special-shaped curtain includes spherical curtain, triangle curtain or irregular screen.
A kind of special-shaped curtain Moviemaking method, movie-movie are active stereo mode three-dimensional 3D films, the true shadow of right and left eyes
Piece is made using the method described in any one of claim 1 to 6.
A kind of special-shaped curtain Moviemaking method, movie-movie are passive stereo mode three-dimensional 3D films, the true shadow of right and left eyes
Piece is made using the method described in any one of claim 1 to 6.
Preferably, projecting the vector grid on true special-shaped curtain, according to the vector grid of projection with it is described truly different
The position relationship of shape curtain, before adjusting the vector grid, in addition to：
Left and right ophthalmic grid is combined.
Compared with prior art, the present invention has advantages below：
(1) the inventive method be it is a kind of it is general, need not have to the soft hardware equipment of movie theatre particular/special requirement, can will
Program picture processing is not limited to be suitable for the processing method of the film of special-shaped curtain projection by the specific building method of special-shaped screen cinema
System, used etc. for the projection of special-shaped curtain film, transplanting provide it is convenient；
(2) directly projection may conform to the projection of special-shaped screen cinema to the film treated using the inventive method in computer
It is required that, it is not necessary to pass through curved surface correction and Fusion Edges soft hardware equipment again；
(3) the inventive method can be applied to single pass single system, can also be applied to the complication system of multichannel, and right
The special-shaped screen cinema of more projected channels is especially advantageous；
(4) the inventive method can also undertake the function of curved surface adjustment and Fusion Edges hardware device, reduce special-shaped curtain shadow
The construction cost of institute；
(5) the inventive method is not related to the mathematical operation of complexity, more handles software and d-making by conventional images
The mathematical operation function of software, it is simple, quick；
(6) present invention renders output in output using video as texture mapping, and can be finely tuned and ensured most by single frames
Whole effect；
(7) the inventive method can be conveniently used in the making of three-dimensional special-shaped curtain film.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the inventive method；
Fig. 2 is ball screen cinema schematic diagram in embodiment；
Fig. 3 is the reference vector path schematic diagram drawn in Adobe Photoshop；
Fig. 4 is standard Grid schematic diagram；
Fig. 5 is curved surface fractionation and Planar Mapping schematic diagram in 3Ds Max.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provide a kind of special-shaped curtain Moviemaking method, for by common standard (rectangle 16: 9,4:
3rd, 2.35: 1 etc.) movie-movie is converted into the film suitable for special-shaped curtain, as shown in figure 1, comprising the following steps：
Step 101, according to projected channel number, describe the shape of true special-shaped curtain using path tool subchannel, formed
Vector grid, the number of vector grid are identical with actual projected channel number.
Step 102, vector grid is projected on true special-shaped curtain, according to the position of the vector grid of projection and true special-shaped curtain
Relation is put, adjusts vector grid so that the vector grid actually projected is uniformly distributed and completely spliced.
Step 103, the three-dimensional curtain body for establishing true special-shaped curtain, the parameter of the three-dimensional curtain body and true special-shaped curtain
It is identical, texture mapping is carried out to three-dimensional curtain body with standard grid, three-dimensional curtain body is accordingly divided at least one son
Region, all subregion is converted into mesh and separated, the number of subregion is identical with actual projected channel number.
Step 104, establishment and the resolution ratio ratio identical plane of movie-movie, by the vector after being adjusted in step 102
Texture mapping of the network as plane, adjustment mesh cause mesh to be overlapped with the texture mapping of plane；
Step 105, using movie-movie as adjustment after three-dimensional curtain body texture mapping and render output.
In the embodiment of the present invention, special-shaped curtain refers to the rectangle curtain except standard, other shapes in addition to cylindrical curtain
Screen, such as spherical curtain, triangle curtain, irregular screen etc..For the curtain of standard type, it is possible to use the embodiment of the present invention, i.e.,
Grid need not be adjusted, it is not necessary to do extra processing.Film can be that digital production forms, and can also be taken on site and form.
Step 101 and 102 can be handled in the image processing tool with full frame drafting vector graphics function, and the present invention is real
Apply in example, image processing tool is Adobe Photoshop.
In step 103, three-dimensional curtain body can create threedimensional model and carry out grid adjustment, texture mapping and render
Established in the d-making software of output, in the embodiment of the present invention, d-making software is 3Ds Max.
The method of the present invention can be applied to single projector, i.e., single pass single system, can also be applied to multiple projections
The complication system of machine, i.e. passage, and to the special-shaped screen cinema positive effect of more projected channels.The film that the embodiment of the present invention is selected
Show place is one 30 degree inclined spherical cap type solid ball screen cinemas, shares 5 projectors, i.e. 5 projected channels, such as Fig. 2
It is shown.
In step 101, drawn in Adobe Photoshop with the resolution ratio identical that projector will use for newly-built one
Cloth, and newly-built path, draw to describe according to the general shape passage path function of the mesh separated in step 101
The vector grid of effective sector region, as shown in Figure 3.
In step 102, projection step 102 is drawn in true movie theatre vector grid compares true movie theatre spherical curtain
Crucial anchor point in the field condition adjusts path of body so that the grid actually projected is uniformly distributed and completely spliced, most
5 deformation vector grids for meeting existing ball curtain curvature, that is, the vector grid after adjusting, and a corresponding change per passage are obtained eventually
Shape vector grid.
In step 103, the ball screen cinema of one and screen cinema identical parameters of choosing shuttles, ball curtain shadow are built in 3Ds Max
Institute includes spherical curtain body, makes texture mapping of the Sphere Nominal grid chart as shown in Figure 4 as ball curtain, according to 5 throwings
Spherical curtain body is divided into 5 curved surfaces by corresponding 5 projected channels of shadow machine, and each curved surface is converted into mesh and separated, point
Suf01~05 is not named as, as shown in Figure 5.
Step 103 can also be first carried out in the embodiment of the present invention, then performs step 101 and 102.Now, step 101 basis
The general shape passage path function of mesh after separation draws to describe the vector grid of effective sector region.
In step 104, five and film resolution ratio identical plane are created in d-making software, is respectively designated as
Plane01~05, the grid chart obtained in step s2 is corresponded into the texture mapping for each plane, in copy step 103
Suf01~05 be sp01~05, correspond to plane01~05 respectively, adjusted by the fixed point of curve so that the He of sp01~05
Grid texture on plane01~05 is completely superposed, as shown in Figure 5.This step passes through vector path editor's grid node, you can
, will the surface mesh complanation grid with texture mapping by curved surface complanation.
In step 105, the texture mapping using film as the ball curtain in step 103, then one by one export video camera 01~
05 film.
Two key points in said process are how the grid data for how obtaining scene and curved surface data map
For panel data.Wherein, the grid data at scene how is obtained：Here by scan picture instrument Adobe
Path function in Photoshop, in the case of live fluoroscopic, the live picture projected of control, choose shadow on curtain body
Ring curved surface correction and Fusion Edges key node draw can exact picture curtain volume morphing vector path, the path be from now on
The data foundation of the Fusion Edges of curved surface correction.
How curved surface data is mapped as panel data：Here spherical curtain body is rebuild by d-making software 3Ds Max,
After one complete texture mapping of curtain body, curtain body Model is split according to the projected channel number of reality, the purpose of the work is
Texture mapping is rationally split, is easy to later movie file to cut.Then by the surface mesh subchannel being split control
Vector path editor's grid node, by curved surface complanation, the work is completed the surface mesh with texture mapping
Complanation grid, because texture mapping and grid node are corresponding, the target gridding node of institute's reference is again with curved surface correction
Data, thus the step for be the one-to-one corresponding that texture and curved surface are completed using grid as intermediary in fact, i.e. be bonded film
Special-shaped curtain.
In the embodiment of the present invention, during film processing is carried out, processing for the first time needs to perform step 101 to 105,
If follow-up film is identical with extended formatting with the film resolution ratio of first time, only need to perform step 105.
Preferably, plane is created in d-making software, the texture mapping using the vector grid after adjustment as plane,
After adjustment mesh make it that mesh overlaps with the texture mapping of plane, in addition to：
Increase fusion band dough sheet on mesh, and gradual change texture mapping is accompanied by dough sheet.
Pass through fusion band dough sheet, you can Fusion Edges are realized, without Fusion Edges machine.
Preferably, increase fusion band dough sheet on mesh, and be accompanied by dough sheet after gradual change texture mapping, also wrapped
Include：
Create free video camera, the window of video camera and plane it is equal in magnitude.
The video camera at one spectators visual angle is set in virtual ball screen cinema, then the reality of film can be watched with preview to spectators
Border effect.
Preferably, using movie-movie as the texture mapping of the virtual special-shaped curtain body after adjustment and before rendering output, also
Including：
Preview single frames film is simultaneously finely tuned.
, can be according to being actually needed selection with needing preview film frame number in the embodiment of the present invention.
For above method flow, the embodiment of the present invention also provides a kind of preparation method of special-shaped curtain film, this method tool
Hold the embodiment method that is referred in vivo, repeat part and will not be repeated here.
Embodiment 2
A kind of preparation method for special-shaped curtain film that the embodiment of the present invention 2 provides, including：
Movie-movie is active stereo mode three-dimensional 3D films, and right and left eyes movie-movie is using the side described in embodiment 1
Method.
The realization of active stereo 3D technology needs three key elements：Refresh rate needs to reach 120 frame per second, infrared signal transmitting
The 3D anaglyph spectacleses of device, acceptable infrared signal.When 3D rendering realizes that left-right frames are alternately produced with the form of frame sequence, by red
External transmitter transfers out these frame signals, be responsible for receive 3D glasses while signal synchronization is realized with left and right two field picture
Alternation switch is synchronized, so as to see stereopsis.
Because active stereo mode 3D films only need a projector, therefore right and left eyes movie-movie uses embodiment
Method described in one, repeat part and repeat no more.
The embodiments of the invention provide a kind of preparation method of special-shaped curtain film, existing image processing tool and three are utilized
Software for producing is tieed up, adjusts to obtain field data in real time with reference to site environment, then the environment at analogue film carrier scene, by general
Projection and certain camera of the film of logical standard in simulated environment render, and obtain combining curved surface correction and Fusion Edges
The final film of data.Conversion and the volume of common standard film are completed according to specific data finally by post film and TV production software
Collect the film that can obtain suitable for special-shaped screen cinema.Present invention method is simple, quick, and adaptability is high, is different from
The conventional curved surface adjustment instrument based on mathematical algorithm, it is not necessary to meet specific boundary condition, practicality height；It is versatile,
The not excessive limitation for building condition, software and hardware configuration condition by movie theatre in itself, used for the projection of special-shaped curtain film, transplanting
It is convenient to provide；The function of curved surface adjustment and Fusion Edges hardware device can also be undertaken, reduces the construction cost of special-shaped screen cinema.
Embodiment 3
A kind of preparation method for special-shaped curtain film that the embodiment of the present invention 3 provides, including：
Movie-movie is passive stereo mode three-dimensional 3D films, and right and left eyes movie-movie is using the side described in embodiment 1
Method.
Passive stereo mode is also referred to as optical polarization Display Technique, main implementation：By Liang Tai projectors simultaneously two
Individual image or film by three-dimensional processing is synchronously shown, and makes this that there are the two images of depth difference to overlap in screen.This
Shi Ruguo eyes direct viewings, it is seen that picture be that ghost image is ambiguous, to see stereopsis it is necessary to every frame project
One piece of polarizer is filled before machine.The light projected from two frame projectors, after polarizer, just into polarised light.Passive stereo mode
Including left-right format and top-down format.
The principle of the 3D films of left-right format is：The polarization direction of polarizer before the Liang Jia projectors of left and right is hung down mutually
Directly, thus caused two beams polarised light polarization direction it is also orthogonal.This two beams polarised light projects to be re-reflected into screen
At spectators, direction of polarized light does not change.After spectators take polarising glass, two panels polariscopic polarization axle in left and right is orthogonal simultaneously
Consistent with the polarization axle before projection lens, so each eye only sees corresponding polarization light image, i.e. left eye can only see a left side
The picture that machine mirrors, right eye can only see the picture that right machine mirrors, and stereo perception can be thus produced as direct viewing.On
The principle of the 3D films of lower form is identical with the 3D film principles of left-right format.
For the 3D films of left-right format, the embodiment of the present invention needs to increase grid data on the basis of embodiment 1
Quantity, due to being stereoscopic picture plane, every width picture all becomes the width of right and left eyes two, and the quantity of grid data is become by original port number
Into twice of port number.
Preferably, the projection vector grid in true special-shaped screen cinema, according to the vector grid of projection and true special-shaped curtain
Position relationship, adjust vector grid before, in addition to：
Left and right ophthalmic grid is combined.
Combination depends on the combination of cinema system, and left and right ophthalmic grid can pass through figure according to the mode of system building
As handling implement carries out left and right splicing, up and down splicing, laterally staggered, longitudinally staggered etc. to image.
The embodiment of the present invention needs to be combined grid data, i.e., according to the combination of cinema system passive stereo,
Such as gauche form, vertical type, the grid data of right and left eyes is combined, then as the foundation subsequently adjusted.
The embodiments of the invention provide a kind of preparation method of special-shaped curtain film, existing image processing tool and three are utilized
Software for producing is tieed up, adjusts to obtain field data in real time with reference to site environment, then the environment at analogue film carrier scene, by general
Projection and certain camera of the film of logical standard in simulated environment render, and obtain combining curved surface correction and Fusion Edges
The final film of data.Conversion and the volume of common standard film are completed according to specific data finally by post film and TV production software
Collect the film that can obtain suitable for special-shaped screen cinema.Present invention method is simple, quick, and adaptability is high, is different from
The conventional curved surface adjustment instrument based on mathematical algorithm, it is not necessary to meet specific boundary condition, practicality height；It is versatile,
The not excessive limitation for building condition, software and hardware configuration condition by movie theatre in itself, used for the projection of special-shaped curtain film, transplanting
It is convenient to provide；The function of curved surface adjustment and Fusion Edges hardware device can also be undertaken, reduces the construction cost of special-shaped screen cinema.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (9)
- A kind of 1. special-shaped curtain Moviemaking method, it is characterised in that be applied to for the movie-movie of common standard to be converted into The film of special-shaped curtain, this method comprise the following steps：1) according to projected channel number, describe the shape of true special-shaped curtain using path tool subchannel, form vector grid, institute The number for stating vector grid is identical with actual projected channel number；2) vector grid is projected on true special-shaped curtain, according to the position of the vector grid of projection and the true special-shaped curtain Relation, adjust the vector grid so that the vector grid actually projected is uniformly distributed and completely spliced；3) the three-dimensional curtain body of true special-shaped curtain is established, the parameter of the three-dimensional curtain body is identical with true special-shaped curtain, with mark Quasi- grid carries out texture mapping to three-dimensional curtain body, and three-dimensional curtain body is accordingly divided into at least one subregion, will be each The subregion is converted into mesh and separated, and the number of the subregion is identical with actual projected channel number；4) the resolution ratio ratio identical plane with movie-movie is created, using the vector network after being adjusted in step 2) as described in The texture mapping of plane, adjust the mesh and mesh and the texture mapping of the plane are overlapped；5) movie-movie as the texture mapping of the three-dimensional curtain body after adjustment and is rendered into output.
- A kind of 2. special-shaped curtain Moviemaking method according to claim 1, it is characterised in that after the step 4), Also include：Increase fusion band dough sheet on the mesh, and gradual change texture mapping is accompanied by dough sheet.
- 3. a kind of special-shaped curtain Moviemaking method according to claim 2, it is characterised in that increase on the mesh Add fusion band dough sheet, and be accompanied by dough sheet after gradual change texture mapping, in addition to：Free video camera is created, the window of the video camera is equal in magnitude with the plane.
- A kind of 4. special-shaped curtain Moviemaking method according to claim 1, it is characterised in that before the step 5), Also include：Single frames exports preview and finely tunes grid.
- 5. a kind of special-shaped curtain Moviemaking method according to claim 4, it is characterised in that when carrying out preview, pass through three Tie up spectators' viewpoint cameras that virtual curtain is pre-set in vivo and carry out preview.
- 6. a kind of special-shaped curtain Moviemaking method according to claim 1, it is characterised in that the special-shaped curtain includes spherical Curtain, triangle curtain or irregular screen.
- A kind of 7. special-shaped curtain Moviemaking method, it is characterised in that movie-movie is active stereo mode three-dimensional 3D films, left and right Eye movie-movie is made using the method described in any one of claim 1 to 6.
- A kind of 8. special-shaped curtain Moviemaking method, it is characterised in that movie-movie is passive stereo mode three-dimensional 3D films, left and right Eye movie-movie is made using the method described in any one of claim 1 to 6.
- 9. a kind of special-shaped curtain Moviemaking method according to claim 8, it is characterised in that projected on true special-shaped curtain The vector grid, according to the position relationship of the vector grid of projection and the true special-shaped curtain, adjust the vector grid it Before, in addition to：Left and right ophthalmic grid is combined.
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| CN108012129B (en) * | 2017-05-09 | 2020-11-03 | 上海纬而视科技股份有限公司 | Method for adjusting special-shaped image |
| CN114241162A (en) * | 2020-09-09 | 2022-03-25 | 广州励丰文化科技股份有限公司 | Projection method of special-shaped projection surface, server and computer readable storage medium |
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