CN109151447A - A kind of novel naked eye three-dimensional optical field imaging system - Google Patents
A kind of novel naked eye three-dimensional optical field imaging system Download PDFInfo
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- CN109151447A CN109151447A CN201810957417.5A CN201810957417A CN109151447A CN 109151447 A CN109151447 A CN 109151447A CN 201810957417 A CN201810957417 A CN 201810957417A CN 109151447 A CN109151447 A CN 109151447A
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- light field
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- naked eye
- scan screen
- control computer
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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
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/20—Stereoscopic photography by simultaneous viewing using two or more projectors
Abstract
The invention discloses a kind of novel naked eye three-dimensional optical field imaging systems, including high-speed projector group, light field scan screen, light field scan screen rotation drive device, control computer, light field software for drawing system, system 3D imaging model, the high-speed projector that high-speed projector group is arranged in different vertical height by three is constituted, control computer is accessed by video parallel interface, light field scan screen is driven by light field scan screen rotation drive device, light field scan screen rotation drive device includes servo drive motor and shaft, servo drive motor driving power board access control computer is controlled, control computer is made of PC host computer and driving interface with board, system 3D imaging model refers to the true naked eye three-dimensional model generated by system, object and scene.The present invention uses 3 d light fields, projection image sequence, and the technologies such as light field shooting and light field drafting realize large scale high-resolution color dynamic 3d model and scene 360 degrees omnidirection is shown.
Description
Technical field
The invention belongs to naked eye three-dimensional imaging technique, in particular to a kind of novel naked eye three-dimensional optical field imaging system.
Background technique
Conventional three-dimensional display technology based on binocular parallax, user experience is bad, needs to wear the auxiliary such as 3D glasses dress
It sets, viewing will lead to eye fatigue and discomfort for a long time, in some instances it may even be possible to cause spiritual obstacle.
The image scene that naked view true three-dimension display technlolgies are shown is truer, more meets the visual custom of people, Bu Huizao
At visual fatigue, existing following several: 1. body Three-dimensional Displays are the superpositions by two dimensional image in space different location, are generated
The distribution of three-dimensional space luminous point, but all display points can be seen, and do not had spatial occlusion relationship, cannot be shown object
Surface texture；It is the luminous optical field distribution by reproducing three-dimension object in the sky, reproducing three-dimensional scape 2. 3 d light fields are shown
As light field contains the luminous radiation direction of object, has spatial occlusion effect, to overcome body Three-dimensional Display in this respect
The shortcomings that；3. hologram three-dimensional imaging system, can be imaged based on erasable material three-dimensional, but hologram it is sensitive to vibration and
Can't complete real-time update, calculate hologram three-dimensional display technology to shake it is insensitive can be with real-time update, but reproduce image ruler
Very little and field angle is smaller, and coherent source, photoelectric display device can cause noise, and true color shows that there are also to be solved；4. grating three
Dimension display has slit grating and Lenticular screen Three-dimensional Display, and slit grating shield bars part leads to 3-D image brightness reduction,
Leverage its application；And Lenticular screen is transparent medium, only absorbs fraction light, it is small on 3-D image brightness influence,
It is widely applied, but the refraction of cylindrical mirror can cause resolution ratio to reduce；5. integration imaging Three-dimensional Display, uses microlens array
Or pinhole array imaging, more people can be allowed to see the 3-D image for having full parallax, authentic color simultaneously, but due to shooting device and show
The limited resolution for showing device, there are depth of 3 D picture reversion, depth bounds are small, resolution ratio is low and viewing visual angle is small etc. lacks
Point.
Summary of the invention
In view of the above-mentioned problems, the present invention is a kind of novel naked eye three-dimensional imaging technique, with 3 d light fields information imaging skill
Art and terminal device, which completely reappear field information, to be come out, and 360 degree of circular observers is allowed to see from field angle where it
The scene display that the information of this corresponding field angle is comprehensive, quality is good.Light field is the total of all light light radiation functions in space
Body, while including the four-dimensional light radiation field parameters of position and direction.Light field has the function of focusing again, can constantly refocusing do
Scene cut, human eye are also first to focus again to scene, then do scene Recognition when seeing three-dimensional scenic, and the position focused every time can not
Together, for example can focus nearby, make nearby clear, distant place it is fuzzy.This system high speed projects unit for the throwing after coding
Shadow image sequence flushes to the correspondence subregion on light field scan screen respectively, realizes 360 degree naked by human eye vision persistence effect
Eye movement state space 3D display.
Concrete scheme is as follows:
A kind of novel naked eye three-dimensional optical field imaging system, including high-speed projector group, light field scan screen, light field scan screen
Rotation drive device, control computer, light field software for drawing system, system 3D imaging model, the high-speed projector group is by three
The high-speed projector for being arranged in different vertical height is constituted, and accesses control computer, the light field scanning by video parallel interface
Screen is driven by light field scan screen rotation drive device, and the light field scan screen rotation drive device includes servo drive motor and turns
The driving power board access control computer of axis, the servo drive motor is controlled, and the control computer is by PC host computer
It is constituted with driving interface and board, the light field software for drawing system is that production naked eye three-dimensional programme content and light field drafting are true
The software systems of three-dimensional imaging, the system 3D imaging model refer to true naked eye three-dimensional model, object and the field generated by system
Scape.
Preferably, the light field scanning screen surfaces are high temperature resistance polyester film, it has obdurability, the transparency, recuperability,
Tensile strength and excellent in cushion effect, and very power is good, dimensionally stable；Principle is persisted according to human eye vision, servo drive motor
Revolving speed, which wants sufficiently high, can just prevent screen flash namely observer from seeing flickering image, but high revolving speed has very big vibration
And noise；It is more orientation screen structures to reduce servo drive motor revolving speed, such light that light field scan screen, which is divided into tetra- areas A, B, C, D,
Field scan screen circles, and high-speed projector can project three times more, and motor speed can drop to a quarter.
Preferably, the orientation screen is oblique concave directional diffuser screen, the oblique concave surface light of the orientation screen of each subregion
Grid bearing is vertical with the angular bisector of the subregion, and tiltedly concave surface low side than high-end closer to light field scan screen axis of rotation.
Preferably, the high-speed projector group will be after the coding that control computer and light field software for drawing system receive
Projection image sequence flushes to the correspondence subregion on light field scan screen respectively, realizes 3D imaging by human eye vision persistence effect,
Three high-speed projectors can see 3D rendering in different vertical heights apart from light field scan screen different height, observer.
Preferably, the light field scan screen rotation drive device passes through remote controler or table top operation button, servo-drive electricity
Machine driving light field scan screen is rotated around vertical axis, and the observer of different direction is enable to watch 3d space from respective azimuth naked eye
Imaging.
The utility model has the advantages that
The beneficial effects of the present invention are embodied in the following aspects.
(1) it is particularly suitable for the places such as teaching, exhibition, advertisement.
(2) demand of many-sided practical application, vivid presentation power of the enhancement information in space be can satisfy.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is light field scan screen section.
Specific embodiment
The present invention reconstructs 360 degree of visual 3 d light fields with based on the 3D imaging technique that light field scans, and observer is allowed to exist
Indoor 360 degree of position can obtain that information is comprehensive, the good displaying information of quality.
The novel naked eye three-dimensional optical field imaging system of one kind provided by the invention, as shown in Figs. 1-2, including high-speed projector
Group 1, light field scan screen 2, light field scan screen rotation drive device 3, control computer 4, light field software for drawing system 5, system 3D at
As model 6, the high-speed projector that the high-speed projector group 1 is arranged in different vertical height by three is constituted, simultaneously by video
Line interface is connect with control computer 4, and the light field scan screen 2 is driven by light field scan screen rotation drive device 3, and the light field is swept
Retouching screen rotation drive device 3 includes servo drive motor 3-1 and shaft 3-2, the driving power board of the servo drive motor 3-1
It connect and is controlled by it with control computer 4, the control computer 4 is by PC host computer 4-1 and driving interface and board 4-2 structure
At equipped with light field software for drawing system 5 in the control computer 4, the light field software for drawing system 5 is production naked eye three-dimensional
Programme content and light field draw the software systems of true three-dimension imaging, and the system 3D imaging model 6 refers to by system generation
True naked eye three-dimensional model, object and scene.
2 surface of light field scan screen is high temperature resistance polyester film, and light field scan screen 2 divides for tetra- areas A, B, C, D, how fixed is
To screen structure to reduce servo drive motor 3-1 revolving speed, such light field scan screen circles, and high-speed projector can project three more
Secondary, motor speed can drop to a quarter, and the orientation screen is oblique concave directional diffuser screen, the orientation of each subregion
The oblique concave grating direction of screen is vertical with the angular bisector of the subregion, and the low side of oblique concave surface than high-end closer to light field scan screen
Axis of rotation, the high-speed projector group 1 will be from the throwings after control computer 4 and the coding that receives of light field software for drawing system 5
Shadow image sequence flushes to the correspondence subregion on light field scan screen 2 respectively, realizes that 3D is imaged by human eye vision persistence effect, and three
For a high-speed projector apart from light field scan screen different height, observer can see 3D rendering in different vertical heights, described
Light field scan screen rotation drive device 3 drives light field scan screen by remote controler or table top operation button, servo drive motor 3-1
2 rotate around vertical axis, enable the observer of different direction from the viewing 3d space imaging of respective azimuth naked eye.
Imaging system can by light field scan screen realize light deviation and scattering, light field be reflected into the top of screen with
Show 360 degree of visual hovering three dimensional objects.High-speed projector group above system is same by prior processed light field image
It projects on high-speed rotating light field scan screen to step, constructs and be suspended in by the turnover of light field scan screen surface screen and scattering
Three dimensional object above screen, light field scanning screen with partitioned are more orientation screen structures to reduce motor speed, and every piece of orientation screen is
Oblique concave directional diffuser screen.If stood in the area B towards the area D, the oblique concave surface in the area A towards left, the oblique concave surface in the area B forward, the area C
To the right, the oblique concave surface in the area D is backward namely the angular bisector of the oblique concave grating direction of each subregion and the subregion hangs down for oblique concave surface
Directly, the low side of oblique concave surface than high-end closer to light field scan screen axis of rotation, all high-speed projectors apart from light field scan screen not
It is farther away apart from light field scan screen apart from light field scan screen closer high-speed projector imaging viewpoint in higher position with height
Viewpoint is imaged in lower position in high-speed projector.Observer can see that 3D is imaged in different vertical heights in this way, be suitble to height
It spends different observers while watching.
This is the hybrid system of a kind of high-speed projector system and multi-projector array, unlike multi-projector array system needs
Too many projector is wanted, and can effectively realize naked eye sense of reality 3 d light fields and be imaged.
Light field multiple four-dimensional light-field cameras for shooting record all information in space for needing the object demonstrated or scene,
The number of light-field camera depends on the size of object or scene, and light-field camera has recorded direction and the intensity of light, this four-dimension letter
Breath has depth information, and can realize refocusing.Light-field camera can be by adding at general camera camera lens (main lens) focal length
Microlens array records light, while capturing multiple visual angle light informations of a scene, then (Fourier cuts by later period algorithm
Piece theorem, optical field imaging algorithm) digital zoom, the four-dimension of entire light field is calculated by the light intensity value analog of each pixel
For function with reconstructing digital light field, the picture of different perspectives shooting has sizable overlapping, thus can optimize light field compression and
Reproduction.
Light field draws through a series of scene image of pre-acquired of drafting or real scene shooting and obtains multiple groups photo sequence (i.e.
The slice of scene light field) for rebuilding light field, then 3 d light fields are pre-processed to obtain being suitble to the image of projection.It determines
After viewpoint position, the radiancy of the point is found from 3 d light fields, i.e., is searched captured by the viewpoint position on image
Corresponding pixel value can be accurately obtained or by adjacent viewpoint when scene light field number of sections is enough out of slice
View approximation obtains each viewpoint view, and correct light field slice can be also extracted by searching for modes such as, interpolation and combinations,
Real-time reconstruction goes out the multi-view image of new different location, by reproducing the 3 d light fields of sampling, obtains observer naturally just
The image at 360 degree of true visual angles can use graphics processor generation in the 3 d light fields for handling many and diverse image data are shown
Handle image.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of novel naked eye three-dimensional optical field imaging system, it is characterised in that: it is scanned including high-speed projector group (1), light field
Shield (2), light field scan screen rotation drive device (3), control computer (4), light field software for drawing system (5) and system 3D and mould is imaged
Type (6), the high-speed projector that the high-speed projector group (1) is arranged in different vertical height by three are constituted, simultaneously by video
Line interface access control computer (4), the light field scan screen (2) are driven by light field scan screen rotation drive device (3), the light
Field scan screen rotation drive device (3) includes servo drive motor (3-1) and shaft (3-2), the servo drive motor (3-1)
Driving power board access control computer (4) controlled, the control computer (4) is connect by PC host computer (4-1) and driving
Mouth is constituted with board (4-2), and the light field software for drawing system (5) is that production naked eye three-dimensional programme content and light field drafting are true
The software systems of three-dimensional imaging, the system 3D imaging model (6) refer to by system generate true naked eye three-dimensional model, object and
Scene.
2. the novel naked eye three-dimensional optical field imaging system of one kind according to claim 1, it is characterised in that: the high speed is thrown
Shadow unit (1) will be from the projection image sequence difference after the coding that control computer (4) and light field software for drawing system (5) receive
The correspondence subregion on light field scan screen (2) is flushed to, 3D imaging, three high-speed projectors are realized by human eye vision persistence effect
Apart from light field scan screen different height, observer can see 3D rendering in different vertical heights.
3. the novel naked eye three-dimensional optical field imaging system of one kind according to claim 1, it is characterised in that: the light field is swept
Retouching screen (2) surface is high temperature resistance polyester film, and it is more orientation screen structures to reduce that light field scan screen (2), which is divided into tetra- areas A, B, C, D,
Servo drive motor (3-1) revolving speed.
4. the novel naked eye three-dimensional optical field imaging system of one kind according to claim 3, it is characterised in that: the orientation screen
For oblique concave directional diffuser screen, the oblique concave grating direction of the orientation screen of each subregion and the angular bisector of the subregion hang down
Directly, and tiltedly concave surface low side than high-end closer to light field scan screen axis of rotation.
5. the novel naked eye three-dimensional optical field imaging system of one kind according to claim 1, it is characterised in that: the light field is swept
Screen rotation drive device (3) is retouched by remote controler or table top operation button, servo drive motor (3-1) drives light field scan screen
(2) it is rotated around vertical axis, enables the observer of different direction from the viewing 3d space imaging of respective azimuth naked eye.
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| CN201810957417.5A CN109151447A (en) | 2018-08-22 | 2018-08-22 | A kind of novel naked eye three-dimensional optical field imaging system |
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| CN201810957417.5A CN109151447A (en) | 2018-08-22 | 2018-08-22 | A kind of novel naked eye three-dimensional optical field imaging system |
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| CN109901371A (en) * | 2019-03-01 | 2019-06-18 | 懿春秋(北京)科技有限公司 | A kind of holographic imaging systems and method |
| CN110986886A (en) * | 2019-12-18 | 2020-04-10 | 中国科学院长春光学精密机械与物理研究所 | Double-camera dynamic rotation scanning three-dimensional imaging simulation device |
| CN111338096A (en) * | 2020-03-26 | 2020-06-26 | 吉林大学 | Exciting light three-dimensional focusing scanning system and image scanning method thereof |
| CN112255903A (en) * | 2020-10-15 | 2021-01-22 | 启迪虚拟现实(南京)科技发展有限公司 | Holographic three-dimensional space naked eye 3d stage presentation device |
| TWI748384B (en) * | 2020-03-10 | 2021-12-01 | 大陸商深圳富桂精密工業有限公司 | Camera layout method and apparatus |
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Application publication date: 20190104 |