CN106056656A - Three-dimensional display data acquisition method - Google Patents
Three-dimensional display data acquisition method Download PDFInfo
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- CN106056656A CN106056656A CN201610157763.6A CN201610157763A CN106056656A CN 106056656 A CN106056656 A CN 106056656A CN 201610157763 A CN201610157763 A CN 201610157763A CN 106056656 A CN106056656 A CN 106056656A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/10—Geometric effects
- G06T15/20—Perspective computation
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Abstract
The invention relates to a three-dimensional display data acquisition method, and discloses a display data generation method of an optical filed reconstruction type three-dimensional display. The method comprises the steps of reading in three-dimensional graphic data, acquiring planar mapping at different angles of the three-dimensional graphic data by using a camera in a world coordinate system, and performing sequence marshalling on acquired planar images; in an observation coordinate system, enabling acquired planar image sequence groups to rotate by a certain angle clockwise around the Z-axis, and sequentially carrying out corresponding distortion correction processing and binarization processing on each image of the sequence; and finally, splicing the planar image sequence groups into a final image data source according to the number of split screens of an optical field reconstruction type three-dimensional display screen corresponding to the image data. Compared with the traditional technologies, the optical field reconstruction type three-dimensional display has the advantages of authentic images, multiple angles and simultaneous observation of multiple persons and the like. The three-dimensional display data generation method has the advantages of high efficiency, convenience operation, excellent final imaging effect, high imaging quality and the like, thereby effectively promoting development and application of three-dimensional display.
Description
Technical field
The invention belongs to body dimension display technologies field and area of computer graphics, be specifically related to a kind of light field and rebuild formula three
The generation method of display data of dimension display.
Background technology
As the dimension display technologies in one of following Display Technique important development direction, increasingly favored by people.
But current dimension display technologies is parallax type three-dimensional display system based on plane mostly, seldom occur truly
Three dimensional display.
Dimension display technologies currently mainly mainly has: parallax type three dimensional display, and hologram three-dimensional shows, body three dimensional display with
Light field rebuilds formula three dimensional display.
Light field reconstruction technique is recording and reproducing three-dimensional body corresponding orientation image in all directions in space
Plant dimension display technologies.This kind of Display Technique can realize 360 degree of continuous parallaxes around object and show, and need not to wear and appoint
What aid, it is achieved many people watch.The spatial occlusion relationship of the most correct reflection elephant.
But the image source of current light field reconstruction technique obtains mode and is always the technical barrier of a very complicated, nothing
Opinion is that the acquisition of Computerized three-dimensional film source or real-world object three-dimensional film source is the most difficult, significantly limit light field and rebuilds skill
The application of art and development.
Summary of the invention
The present invention proposes a kind of light field and rebuilds the generation method of display data of formula three dimensional display, and its feature is efficiently
Convenient, it is ultimately imaged excellent, image quality is high.This is for needing to carry out the dimension display technologies of ultra-large data process
For significant, it is meant that the making three dimensional rendered images data that user can be convenient, will effectively promote three-dimensional aobvious
Show development and the application of industry.
The present invention proposes a kind of light field and rebuilds the generation method of display data of formula three dimensional display, including:
Step one: model data acquisition module reads and shows three-dimensional modeling data.
Step 2: use the Planar Mapping of the place angle of camera acquisition 3 D graphic data in world coordinate system, will
Camera obtains the Planar Mapping image of each Difference angles successively around three-dimensional body Z axis center；And it is flat by obtain
Face image sequence marshalling (n, n+1, n+2...).
Step 3: in view coordinate, by respective around Z for plane picture sequence marshalling (n, n+1, n+2...) obtained
Axle center turns clockwise corresponding angle (P, P+1, P+2...).
Step 4: width image each to sequence does the distortion correction process of correspondence successively, and makees unified binary conversion treatment.
Step 5: rebuild formula three dimensional display screen split screen quantity, by plane picture according to the light field that view data is corresponding
Final image sequence (N, N+1, N+2 ...) is merged in sequence marshalling (n, n+1, n+2...) splicing.
Step 6: described view data is transmitted to display.
Light field as claimed in claim 1 rebuilds the generation method of display data of formula three dimensional display, it is characterised in that institute
Stating in step one, it is any one method following that described data acquisition module obtains the method for data:
Method A1: when described 3-D view is Computerized three-dimensional image, the three-dimensional data as described in 3D modeling software, inversely sweep
Retouch three dimensional point cloud etc..
Method A2: when described 3-D view is object in kind, utilize one relative with rebuild object can do circumference
The object in kind described in video camera shooting of motion is to gather light field data.
Planar Mapping image data acquiring method as described in claim 1 includes successively:
Step B1: the origin position that is placed in world coordinate system by the three-dimensional modeling data K of identification also shows.
Step B2: video camera rotates R angle successively and gathers the flat of angle corresponding to threedimensional model around threedimensional model
Face mapping graph picture.Wherein angle R=360/NIPR.Described NIPR is the 3-D view angular resolution that the light field that user sets is rebuild
Rate.
Step B3: be sequence number n by the first width image tagged of collecting, the second width is sequence number n+1, and will be gathered successively
Image arrangement sequence.
As described in claim 1 step 3 each the most about the z axis center turn clockwise corresponding angle P, it is characterised in that institute
The corresponding angle P stated is 360/NIPR*n, so coefficient of rotary P can represent with equation below
P=360/NIPR*n
P+1=360/NIPR*n+1
P+2=360/NIPR*n+2
In this relational expression, NIPR is the 3-D view angular resolution that the light field that user sets is rebuild, and n is that corresponding image sequence is compiled
Number.
As, work as NIPR=40, during n=0, P=360/40*0=0, then the image n gathered is just around the view coordinate at its place
The Z axis anglec of rotation 0 degree.
Distortion correction as described in claim 1 step 3 processes, it is characterised in that use high-precision cube sum method
Carrying out interpolation calculation, the correction pixels value of every bit is obtained by interpolation method algorithm, is composed by the half-tone information of the point after conversion afterwards
To pixel corresponding in projection picture, pixel value to be projected i.e. can be obtained.
Binary conversion treatment as described in claim 1 step 3, it is characterised in that the continuous-tone image intercepted is compiled
Code is bianry image, i.e. produces a width bianry image and makes it seem similar to original multistage tone images.At this, we are general
Use dither algorithm, error-diffusion method, some broadcast algorithm and iterative algorithm.
The image mosaic of the multiple split screen of correspondence as described in claim 1 step 3, it is characterised in that when split screen quantity is
During S, the merging of S group image is just put into final image sequence N, N+1, N+2... and N, N+1, N+2... width image by us
With picture center as midpoint, picture is divided into S part, by the picture of the most corresponding with n+360/s for plane picture sequence n S part
Heart point is placed and is pieced together final image sequence (N, N+1, N+2...).
A kind of light field as claimed in claim 1 rebuilds the video data generating mode of formula three dimensional display, and its feature exists
In, the view data of generation mails to projector equipment eventually through USB or PCI-E interface.
Beneficial effects of the present invention includes, the present invention proposes a kind of light field and rebuilds the video data life of formula three dimensional display
One-tenth method.It is the most convenient that its feature is, is ultimately imaged excellent, and image quality is high.Mean that user can be more square
Just making three dimensional rendered images data, will effectively promote development and the application of three dimensional display industry
Accompanying drawing explanation
Fig. 1 is the generation method of display data schematic flow sheet (flow chart) that light field rebuilds formula three dimensional display.
Fig. 2 is coordinate system of the present invention signal (coordinate system signal).
Fig. 3 is distortion correction schematic diagram of the present invention (correction conversion signal).
Fig. 4 is span (the value model of cube sum method of the cube sum method for distortion correction
Enclose)
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the detailed description of the invention of the present invention is further described, but should not limit with this
Protection scope of the present invention.
As it is shown in figure 1, the present invention a kind of light field rebuild formula three dimensional display generation method of display data, including but not
It is limited to the following two kinds.
Step one: model data acquisition module reads and shows three-dimensional modeling data.
Step 2: use the Planar Mapping of the place angle of camera acquisition 3 D graphic data in world coordinate system, will
Camera obtains the Planar Mapping image of each Difference angles successively around three-dimensional body Z axis center；And it is flat by obtain
Face image sequence marshalling (0,1,2...).
Step 3: set 3-D view display angular resolution in upper computer software as 360. in view coordinate, will
The respective corresponding angle that turns clockwise around Z axis center of plane picture sequence marshalling (0,1,2...) of acquisition (0 °, 1 °,
2°...)。
Step 4: width image each to sequence does the distortion correction process of correspondence successively, and makees unified binary conversion treatment.
Step 5: rebuild formula three dimensional display screen split screen quantity, by plane picture according to the light field that view data is corresponding
Final image sequence (0,1,2...) is merged in sequence marshalling (0,1,2...) splicing.
Step 6: described view data is transmitted to display.
In step one, model data acquisition module obtains the method for source data and includes two kinds of acquisition methods:
(1) for electronic 3-D model data, major part uses ripe 3 d modeling software drawing three-dimensional model, as
3DMAX, Rhino, Maya, Solidworks, UG, Pro-E, Catia etc. computer aided design software.Build what a mould
Generating a kind of entitled STL or OBJ after type is the file of suffix name, is a kind of illustrative script file, comprises grid vertex
Number, mesh vertex coordinates, grid texture apex coordinate, the pinup picture that correspondence renders, gridding method vectorial coordinate etc..Of the present invention
Model data acquisition module therefrom read grid data, and shown.
(2) for for showing real object, such as one teapot or a people, it is possible to use reverse reconstruction
Mode rebuilds the Computerized three-dimensional figure of real-world object.Common reverse reconstruction means have 3 D laser scanning, photo reconstruction etc..
Described step one and step 2, data acquisition module obtains the method for source data can also generation with the following methods
Replace, be directly entered step 3.For showing real object, such as one teapot or a people.The embodiment of the present invention uses 1
Platform camera, relatively around object rotary taking, gathers the correspondence image of each angle of three-dimensional body, and flat by obtain
Face image sequence marshalling (0,1,2...).
Result shows, the present invention achieves preferable implementation result, and 3-D view image quality is outstanding, and stable, details is also
Former abundant, data-handling efficiency is high, and what user can be convenient makes the view data for three dimensional display.
These are only presently preferred embodiments of the present invention, be not used for limiting the practical range of the present invention.Skill to this area
It is readily apparent that other changes many can be made without departing from the spirit and scope of the present invention from the point of view of art personnel
And modification.Therefore, claims are intended to all these changes and the modification including belonging in the scope of the invention.
Claims (9)
1. the generation method of display data of a light field reconstruction formula three dimensional display, it is characterised in that comprise the following steps:
Step one: model data acquisition module reads and shows three-dimensional modeling data；
Step 2: use the Planar Mapping of the place angle of camera acquisition 3 D graphic data in world coordinate system, by camera
The Planar Mapping image of each Difference angles is obtained successively around three-dimensional body Z axis center；And the plane graph that will obtain
As sequence organizes into groups (n, n+1, n+2...)；
Step 3: in view coordinate, by plane picture sequence marshalling (n, n+1, n+2...) that obtains each around in Z axis
The heart turns clockwise corresponding angle (P, P+1, P+2...)；
Step 4: width image each to sequence does the distortion correction process of correspondence successively, and makees unified binary conversion treatment；
Step 5: rebuild formula three dimensional display screen split screen quantity, by plane picture sequence according to the light field that view data is corresponding
Final image sequence (N, N+1, N+2) is merged in marshalling (n, n+1, n+2...) splicing；
Step 6: described view data is transmitted to display.
2. light field as claimed in claim 1 rebuilds the generation method of display data of formula three dimensional display, it is characterised in that described
In step one, it is any one method that described data acquisition module obtains the method for data:
Method A1: when described 3-D view is Computerized three-dimensional image, the three-dimensional data as described in 3D modeling software, inversely sweep
Retouch three dimensional point cloud etc.；
Method A2: when described 3-D view is object in kind, utilize one can relative with rebuild object move in a circle
Video camera shooting described in object in kind to gather light field data.
Planar Mapping image data acquiring method the most as described in claim 1 comprises the following steps successively:
Step B1: the origin position that is placed in world coordinate system by the three-dimensional modeling data K of identification also shows；
Step B2: video camera rotates R angle successively and gathers the plane of angle corresponding to threedimensional model and reflect around threedimensional model
Penetrate image；
Wherein angle R=360/NIPR, described NIPR is the 3-D view angular resolution that the light field that user sets is rebuild；
Step B3: be sequence number n by the first width image tagged of collecting, the second width by sequence number n+1... and will be gathered successively
Image arrangement sequence.
4. as described in claim 1 step 3 each the most about the z axis center turn clockwise corresponding angle P, it is characterised in that described
Corresponding angle P be 360/NIPR*n, so coefficient of rotary P can represent with equation below:
P=360/NIPR*n
P+1=360/NIPR*n+1
P+2=360/NIPR*n+2
In this relational expression, NIPR is the 3-D view angular resolution that the light field that user sets is rebuild, and n is that corresponding image sequence is compiled
Number, e.g., work as NIPR=40, during n=0, P=360/40*0=0, then the image n gathered just revolve around the view coordinate Z axis at its place
Gyration 0 degree.
5. the distortion correction as described in claim 1 step 3 processes, it is characterised in that use high-precision cube sum
Method carries out interpolation calculation, and the correction pixels value of every bit is obtained by interpolation method algorithm, afterwards by the half-tone information of the point after conversion
It is assigned in projection picture the pixel of correspondence, i.e. can obtain pixel value to be projected.
6. the binary conversion treatment as described in claim 1 step 3, it is characterised in that the continuous-tone image coding that will be intercepted
For bianry image, i.e. produce a width bianry image and make it seem similar to original multistage tone images.
7. at this, we typically use dither algorithm, error-diffusion method, some broadcast algorithm and iterative algorithm.
8. the image mosaic of the multiple split screen of correspondence as described in claim 1 step 3, it is characterised in that when split screen quantity is S
Time, the merging of S group image is just put into final image sequence N, N+1, N+2... and N, N+1, N+2... width image by us
With picture center as midpoint, picture is divided into S part, by the picture of the most corresponding with n+360/s for plane picture sequence n S part
Heart point is placed and is pieced together final image sequence (N, N+1, N+2...).
A kind of light field the most as claimed in claim 1 rebuilds the video data generating mode of formula three dimensional display, it is characterised in that
The view data generated mails to projector equipment eventually through USB or PCI-E interface.
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| CN108109246A (en) * | 2018-01-08 | 2018-06-01 | 广东虹勤通讯技术有限公司 | A kind of unlocking method based on line holographic projections, coded lock and system |
| CN108681627A (en) * | 2018-04-27 | 2018-10-19 | 武汉大学 | A kind of LCD soft proof algorithm of full color 3 D-printing |
| CN108833893A (en) * | 2018-05-31 | 2018-11-16 | 北京邮电大学 | A kind of 3D rendering bearing calibration shown based on light field |
| CN110163941A (en) * | 2018-07-16 | 2019-08-23 | 南京洛普科技有限公司 | A kind of image processing apparatus and image processing method for LED curved body |
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| CN113436348A (en) * | 2021-06-25 | 2021-09-24 | 北京达佳互联信息技术有限公司 | Three-dimensional model processing method and device, electronic equipment and storage medium |
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| CN107643604A (en) * | 2017-10-20 | 2018-01-30 | 华中科技大学 | A kind of rotating mirror formula three-dimension dynamical display system and method |
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| CN108109246A (en) * | 2018-01-08 | 2018-06-01 | 广东虹勤通讯技术有限公司 | A kind of unlocking method based on line holographic projections, coded lock and system |
| CN108681627A (en) * | 2018-04-27 | 2018-10-19 | 武汉大学 | A kind of LCD soft proof algorithm of full color 3 D-printing |
| CN108833893A (en) * | 2018-05-31 | 2018-11-16 | 北京邮电大学 | A kind of 3D rendering bearing calibration shown based on light field |
| CN110163941A (en) * | 2018-07-16 | 2019-08-23 | 南京洛普科技有限公司 | A kind of image processing apparatus and image processing method for LED curved body |
| CN110838163A (en) * | 2018-08-15 | 2020-02-25 | 浙江宇视科技有限公司 | Mapping processing method and device |
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| CN113436348A (en) * | 2021-06-25 | 2021-09-24 | 北京达佳互联信息技术有限公司 | Three-dimensional model processing method and device, electronic equipment and storage medium |
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Application publication date: 20161026 |