CN101175224A - Method and system for implementing solid video picture in air - Google Patents
Method and system for implementing solid video picture in air Download PDFInfo
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- CN101175224A CN101175224A CNA2007101780369A CN200710178036A CN101175224A CN 101175224 A CN101175224 A CN 101175224A CN A2007101780369 A CNA2007101780369 A CN A2007101780369A CN 200710178036 A CN200710178036 A CN 200710178036A CN 101175224 A CN101175224 A CN 101175224A
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Abstract
The present invention relates to a sky media technology, in particular to the technology which utilizes a multi-lightbeam focusing principle to produce a multimedia tridimensional video in the sky. In the embodiment of the present invention, mapping light sources at different position project light spots to an imaging space, and after the light spots are focused in the imaging space, high-brightness light-condensing points form a tridimensional figure. In the dark background, the present invention does not need any hardware devices in the air to project a tridimensional video, the realization method is simple, and popularization and use are easy.
Description
Technical field
The present invention relates to a kind of aerial solid video picture technology, particularly relate to a kind of technology of utilizing the multiple beam focusing principle to produce the multimedia stereopsis aloft.
Background technology
Aerial imaging technique development rapidly, American I 2 companies succeeded in developing in 2005 a kind of can be in air the equipment of projection two dimensional image, its basic principle is air inspiration machine, change its imaging characteristic then, again penetrate again, and projected image from bottom to top in the air after transformation, thereby image is floated in the air, can allow people all see image in different angles.The technology that also has some air-borne imageries, for example, the gas wall projection imaging aloft that Finland a company utilizes steam and ultrasonic wave to form.Japan a company forms stereo-picture by oxygen molecule and nitrogen molecular in the direct heated air of laser aloft thereby produce plasma luminescence aloft, and can utilize technological means to assemble thousands of bright spots, makes picture level and smooth more smooth.Above technological means is not suitable for realizing significantly solid video picture aloft owing to realize that the complicated projector distance of principle is short.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of realization system of aerial solid video picture, can throw in out three-dimensional image in relatively darker background, and for achieving the above object, technical scheme of the present invention is achieved in that
A kind of system that realizes aerial solid video picture comprises:
Two or more control desks are used for throwing light beam and controlling the light beam projecting direction to the video picture space;
Medium control centre, the processing that is used to design stereopsis and realize the stereopsis data transforms, and produces the control signal that is used to throw light beam for each control desk;
The video picture space is used for presenting stereo-picture aloft;
Described medium control centre links to each other with described two or more control desks by data and control bus, and the stereo-picture in the described video picture space is formed through focusing on the back to the light beam of aerial projection from different perspectives by described two or more control desks.
Further, described control desk comprises:
Light source generator is used to produce the light source that is fit to projection;
The light beam controller is used to receive the control command from described medium control centre, changes the angle of light beam projection quickly and accurately, carries out the task of scanning.
Further, the light beam of described control desk projection is colored light beam, and described colored light beam focuses on the back aloft and forms colored focal point, thereby forms coloured image.
Except that above-mentioned embodiment, the present invention also has another embodiment, and implementation is as follows:
A kind of realization system of aerial solid video picture comprises:
Two or more map source are used for to aerial projected spot;
The video picture space is used for presenting stereo-picture aloft;
Stereo-picture in the described video picture space is formed through focusing on the back to the hot spot of aerial projection from different perspectives by described two or more map source.
Further, described map source comprises light source and shadow shield, and described used in sunshade board shields unnecessary light in producing hot spot.
Further, described map source comprises:
Light source is used to produce directed light;
The hot spot modulation device is used to control the shape of hot spot, produces the spot pattern through ovennodulation;
The projection camera lens is used for hot spot is projected described video picture space;
The directional rays that described light source produces forms hot spot by described hot spot modulation device modulation back, and described hot spot projects in the video picture space by described projection camera lens.
Further, described map source also comprises filter, is used to produce primary lights, between described light source and hot spot modulation device.
Further, described hot spot modulation device is formed by LCD panel or Digital Micromirror Device.
Another object of the present invention provides a kind of implementation method of aerial solid video picture, and for achieving the above object, technical scheme of the present invention is achieved in that
A kind of implementation method of aerial solid video picture comprises the steps:
A, three-dimension space image is carried out two-dimensional parameter conversion and sends imaging device to;
B, imaging device form highlighted focal point at multiple spot projection light beam in aerial focusing back, are combined to form image by described highlighted focal point.
Further, among the step B, described image is aloft scanned by one or more highlighted focal points and forms.
Further, among the step B, described imaging device projects a plurality of light beams and forms hot spot in each incident point, the hot spot of the hot spot of each incident point projection and the projection of other incident point focuses on the back aloft and forms described stereo-picture, produces dynamic stereopsis by quick renewal stereo-picture.
Further, among the step B, the light beam of described imaging device projection is colored light beam, and described colored light beam focuses on the back aloft and forms coloured image.
The present invention can without any need for hardware device, project stereopsis in air in relatively darker background, image effect wind-engaging rain shadow rings minimum.This invention can or filled the air the brand-new multimedia stereopsis of manufacturing in the artificial space that can cause the light scatter particle at the place of dark.
Description of drawings
Fig. 1, be disclosed multiple beam focusing scanning structure chart;
Fig. 2, be disclosed pixel space network for location;
Fig. 3, be disclosed hot spot mapping structure figure;
Fig. 4, be the structure chart of disclosed hot spot device for projecting;
Fig. 5, be the disclosed three dimensions pixel and the schematic diagram of hot spot mapping parameters;
Fig. 6, be disclosed three dimensions calculation of parameter reference view.
Embodiment
Basic functional principle of the present invention is the multiple beam focusing principle, and in enough dark environment, light beam with airborne dust granules and gas molecule collision and luminous, forms light beam aloft; Though the light of this dust scattering is very faint, if several even tens skyborne certain particular spaces focusing of the light beam from different directions, the brightness of this particular space will be exaggerated several times even tens times, become aerial highlighted focal point, hereinafter to be referred as focal point, this luminous point is three-dimensional, has comprehensive visual characteristic.
Utilize the middle on high imaging mode of focal point to have two kinds, as described below respectively:
Method one: scanning method.
Based on the principle that multiple beam focuses on, utilize multiple beam to focus on the focal point that produces, the control focal point carries out quick spacescan, utilizes human vision to postpone, and produces continuously and the stable and stereoscopic image.Can adopt multi-point scanning to improve the stability of image.Can improve the resolution of image by the accuracy that improves the light beam control of azimuth.By using colored light beam to focus on, perhaps utilize primary lights to focus on mixing in the air, produce the color solid image through spacescan.
As shown in Figure 1, method one described aerial image jettison system is divided into three major parts, control desk, medium control centre and video picture space.Each control desk mainly is made of light source generator and light beam controller, the major function of light source generator is to produce light beam, the major function of light beam controller is the control command that receives from data/address bus, changes the angle of light beam projection quickly and accurately, carries out the task of scanning.Medium control centre becomes the three dimensions video conversion that designs the control command of the space lattice scanning of each control desk.Control desk is linked to each other by data/address bus with medium control centre, and medium control centre sends to each control desk to control command, and each control desk feedback data information is given medium control centre, and bus can be used electric wire, optical fiber or wireless telecommunications.
As shown in Figure 2, be provided with 6 control desks on 6 building tops, be respectively control desk A, control desk B, control desk C, control desk D, control desk E and control desk F, all control desks all use a frame of reference, and the coordinate of each control desk in the frame of reference is respectively (x
1, y
1, z
1), (x
2, y
2, z
2), (x
3, y
3, z
3), (x
4, y
4, z
4), (x
5, y
5, z
5) and (x
6, y
6, z
6).At a time, the position of light beam focus point scanning is (x
0, y
0, z
0), control desk A light beam projection vector is (x
0-x
1, y
0-y
1, z
0-z
1), this vectorial accurate description the accurate angle of light beam projection.By that analogy, all control desks can both obtain light beam crevice projection angle accurately by simple vector calculation.
Scanning method image input flow process is as follows:
The first step is determined the space reference coordinate position of all control desks;
In second step,, be created in the space lattice of the 3-dimensional image of each release position with the 3-dimensional image digitlization;
In the 3rd step, medium control centre is the control signal of each control desk with digitized video conversion;
In the 4th step, transmit control signal to each control desk by data/address bus;
In the 5th step, each control desk changes the light beam crevice projection angle according to control signal, carries out spacescan, produces 3-dimensional image.
This method also can resolve into some area of space with a spatial image, carries out spacescan with a plurality of focal points and constitutes entire image.
Method two: reflection method.
Principle based on multiple beam focusing, gather the hot spot that forms by a plurality of light beams from each incident point projection, carrying out multiple spot aloft focuses on, the hot spot that utilization has pattern is mapped in the more stable image of aerial multiple spot focusing back formation, just can realize the projection of 3-dimensional image by the hot spot scanning of relative low speed.Can improve the resolution of image by the resolution that improves hot spot.By the control light source color, perhaps add filter coating, perhaps primary lights focus on mixing in the air, produce the color solid image.
As shown in Figure 3, be one simple, the hot spot mapping imaging schematic diagram of static 3-dimensional image, by several independently map source form, the shadow shield that each map source comprises light source and has a special light hole pattern is formed, at working state of system, light source can stably illuminate whole aerial video picture space, designed specific pattern on the shadow shield, light source projects hot spot by the light hole on the shadow shield, shines upon the stack back aloft from the hot spot of each map source and forms bright relatively 3-dimensional image.
The image input flow process of reflection method is as follows:
The first step is determined the space reference coordinate position of all map source, and aims at image projection target sky;
Second step, the design three-dimension space image;
In the 3rd step, calculate the mapping pattern of three-dimension space image on shadow shield;
In the 4th step, make the shadow shield that has these mapping patterns;
In the 5th step, map source aloft focuses on and forms 3-dimensional image from all angles projected spot.
Because the passive luminous efficiency of air dust is extremely low, therefore require the luminous power of light source big; Too high for fear of light beam control system working temperature, require the luminous efficiency height of light source.With existing technology, ultrahigh pressure mercury lamp and xenon lamp are two proper selections.UHP (Ultra High Performance) and these two kinds of ultrahigh pressure mercury lamps of UHE (Ultra High Efficiency) they are light sources that present middle-grade projector generally adopts, long service life, and the luminosity height, reliable and stable, color rendering is good.The output power range of xenon lamp is bigger, can use on main equipment.With LED (Light-emitting Diode) lamp is that the semiconductor light sources of representative is fast-developing direction, and its luminous efficiency is high, useful life overlength, so high-power LED lamp also is suitable light source.Laser direction is good, brightness is high, color is pure, response speed is fast, also is good light source.
The hot spot control of static three dimensions image pattern can realize by the shadow shield that has special light hole.If realize high-quality dynamic 3 D image, need to adopt digitlization hot spot control technology.A kind of implementation is the passive principle of luminosity that utilizes LCD (Liquid Crystal Display) projector, the matrix that its core component LCD liquid crystal board is made up of liquid crystal cells.Being arranged under the electric field action of liquid crystal molecule changes, thereby changes the light transmittance of liquid crystal cells, realizes the break-make with electronic signal control light path, and then produces the hot spot through ovennodulation, by throwing camera lens to aerial projection.Another kind of implementation is to use DLP (Digital Lighting Processing, digital light is handled) technology, its core component is that (Digital Micromirror Device, DMD), other parts also have light source, filter and projection camera lens to Digital Micromirror Device.Light mating plate is after filtration invested dmd chip with three primary colors in the different time intervals.According to up-to-date technology, form by nearly 2,000,000 small eyeglasses on the dmd chip, resolution can reach 1024 * 768, each micromirror all can be between+12 ° and-12 ° positioning of rotating, can realize several thousand times switch transition each second.Input signal is the deflection of Digital Control micromirror after treatment, incident ray through after the reflection of micromirror by the hot spot of projection camera lens output through ovennodulation.This technology is to utilize catoptric imaging, the utilance height of light, and good contrast, response speed is fast, and total digitalization is the best-of-breed technology scheme that realization is dynamically controlled the focusing light beam that is used for imaging.
In order in airspace, to show the three dimensions image pattern, need preestablish a block space zone, and with this area of space digitlization, because multiple beam focuses on and may cause bigger space error, so growing the resolution that resolution on (L), wide (W), high (H) three directions should be lower than LCD or DMD device.For example, if the resolution of DMD on vertical (x) horizontal (Y) both direction is 1024 * 768, then the digitized effective resolution in space is much lower, and such as 96 * 96 * 96, the cubical actual length of side of each space pixel is from centimetre order of magnitude to rice.
Fig. 4 is digitlization hot spot control principle figure, hot spot can be regarded as the set of low-light post, with the dmd chip is example, after the three dimensions image pattern of process digitized processing arrives the conversion on mapping plane by solid space, on dmd chip, show as by a plurality of light emitting pixel points and form special pattern, each projection source is inequality by the special pattern that light emitting pixel point forms, because dmd chip resolution is higher, the resolution of spatial image is lower, so may constitute the spot of the two dimension of a circle on the described special pattern by a plurality of pixels of dmd chip, the special pattern that is used to form hot spot is exactly the set of these spots, and the circular light that spot produced just forms a rule light beam in the air by projection camera lens directive.Light source 1 produces white directional light among Fig. 4; Directional light forms primary lights by filter 2, is used for chromoscan; Hot spot modulation device 3 is core devices of control light spot shape, produces the hot spot through ovennodulation; Getting to the sky through projection camera lens 4 then goes in the air.Effectively virtual focus is after light beam throws away, the focus of reverse extending line.
Fig. 5 is a hot spot imaging schematic diagram, and device for projecting 5 is to 3 D developing space projected spot, (x
1, y
1, z
1) be the three dimensional space coordinate of effective virtual focus, can obtain by three-dimensional fix and actual measurement; The hot spot modulation device 3 of signal is used to form hot spot, such as LCD LCD panel or DMD device, coordinate (x
1', y
1', z
1') be exactly its centre coordinate, can calculate by three-dimensional computations; The target sky 6 of definition is the 3 D developing space in the time of system design, and the three-dimensional coordinate of its central point is (x just
0, y
0, z
0).
Several hot spot device for projecting are put more uniformly and are fixed around default below, digitlization 3 D developing space, and the scope that hot spot is throwed covers whole three-dimensional imaging space.Each device for projecting, parameters such as the position by measuring the projection camera lens, angle can accurately be located the three dimensional space coordinate of effective virtual focus.Calculate the position and the size of each digitlization three dimensions pixel corresponding light-emitting zone on LCD or DMD then.With resolution is that 1024 * 768 DMD is an example, and the locus of emitting space pixel is corresponding to the two-dimensional coordinate on DMD plane, and the size of emitting space pixel reflects the distance of pixel distance projection camera lens.Utilize this method, set up the corresponding lists between the two-dimensional image vegetarian refreshments of dmd chip of each three dimensions pixel and each hot spot device for projecting.So just can obtain the hot spot mapping parameters table of any three dimensions pixel with the solid geometry computational methods to every device for projecting.
As shown in Figure 6, (x
0, y
0, z
0) be the three-dimensional coordinate of 3 D developing space center's point C; (x
1, y
1, z
1) be the three-dimensional coordinate of virtual focusing point A; (x
1', y
1', z
1') for throwing the three-dimensional coordinate of camera lens central point B; (x
A, y
A, z
A) be the three-dimensional coordinate of any three dimensions pixel center point E; (x
a, y
a, z
a) be the three-dimensional coordinate of the intersection point D that intersects of straight line between E point and the A point and projecting mirror head plane; F=AB is the length of effective virtual focus, by the optical properties decision of projection camera lens; L=AC=AB+BC is the distance of effective virtual focus to 3 D developing space center; The three dimensions pixel can be reduced to a spherosome from a square, R=EF is exactly the radius of this spherosome.
Coordinate (the x of A
1, y
1, z
1), the coordinate (x of C
0, y
0, z
0), the coordinate (x of E
A, y
A, z
A), f and l can obtain by three dimensional design and actual measurement.
(x
0-x
1) (x-x
1')+(y
0-y
1) (y-y
1')+(z
0-z
1) (z-z
1')=0 (equation 2)
(x
0-x
1) (x-x
1')+(y
0-y
1) (y-y
1')=0 (equation 4)
(y
0-y
1) (x-x
1')-(x
0-x
1) (y-y
1')=0 (equation 5)
Equation 5 is the Y of projecting mirror head plane
1The axle linear equation;
On the projecting mirror head plane, with central point B (x
1', y
1', z
1') be initial point, equation 4 is X
1Axle, equation 5 is Y
1Axle is set up the two dimensional surface coordinate system, is equivalent to hot spot modulation plan coordinate system, and contrast Fig. 4 promptly utilizes hot spot modulation device among Fig. 4 to modulate spot pattern on the described projecting mirror head plane.In projecting mirror head plane coordinate system, calculate D to Y
1Axle and X
1The distance of axle and direction just can be finished the parameter conversion of three-dimensional coordinate to two-dimensional map.
Equation 7 is used for calculation level (x
a, y
a, z
a) at the Y1 of lens plane coordinate;
Equation 8 is used to calculate hot spot and throws radius r at lens plane
1
By above formula, can (L, W, spatial information H) be converted to the hot spot modulation parameter (X of a hot spot device for projecting with each three dimensions pixel
1, Y
1r
1), other hot spot device for projecting also can use the same method and calculate, for example (X
2, Y
2r
2), (X
3, Y
3r
3), (X
4, Y
4r
4), (X
5, Y
5r
5) or the like.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. the realization system of an aerial solid video picture is characterized in that, comprising:
Two or more control desks are used for throwing light beam and controlling the light beam projecting direction to the video picture space;
Medium control centre, the processing that is used to design stereopsis and realize the stereopsis data transforms, and produces the control signal that is used to throw light beam for each control desk;
The video picture space is used for presenting stereo-picture aloft;
Described medium control centre links to each other with described two or more control desks by data and control bus, and the stereo-picture in the described video picture space is formed through focusing on the back to the light beam of aerial projection from different perspectives by described two or more control desks.
2. system according to claim 1 is characterized in that, described control desk comprises:
Light source generator is used to produce the light source that is fit to projection;
The light beam controller is used to receive the control command from described medium control centre, changes the angle of light beam projection quickly and accurately, carries out the task of scanning.
3. system according to claim 1 is characterized in that, the light beam of described control desk projection is colored light beam, and described colored light beam focuses on the back aloft and forms colored focal point, thereby forms coloured image.
4. the realization system of an aerial solid video picture is characterized in that, comprising:
Two or more map source are used for to aerial projected spot;
The video picture space is used for presenting stereo-picture aloft;
Stereo-picture in the described video picture space is formed through focusing on the back to the hot spot of aerial projection from different perspectives by described two or more map source.
5. system according to claim 4 is characterized in that described map source comprises light source and shadow shield, and described used in sunshade board shields unnecessary light in producing hot spot.
6. system according to claim 4 is characterized in that, described map source comprises:
Light source is used to produce directed light;
The hot spot modulation device is used to control the shape of hot spot, produces the spot pattern through ovennodulation;
The projection camera lens is used for hot spot is projected described video picture space;
The directional rays that described light source produces forms hot spot by described hot spot modulation device modulation back, and described hot spot projects in the video picture space by described projection camera lens.
7. system according to claim 6 is characterized in that described map source also comprises filter, is used to produce primary lights, between described light source and hot spot modulation device.
8. system according to claim 6 is characterized in that, described hot spot modulation device is formed by LCD panel or Digital Micromirror Device.
9. the implementation method of an aerial solid video picture is characterized in that, comprises the steps:
A, three-dimension space image is carried out two-dimensional parameter conversion and sends imaging device to;
B, imaging device form highlighted focal point at multiple spot projection light beam in aerial focusing back, are combined to form image by described highlighted focal point.
10. system according to claim 9 is characterized in that, described image is aloft scanned by one or more highlighted focal points and forms.
11. system according to claim 9, it is characterized in that, among the step B, described imaging device projects a plurality of light beams and forms hot spot in each incident point, the hot spot of the hot spot of each incident point projection and the projection of other incident point focuses on the back aloft and forms described stereo-picture, produces dynamic stereopsis by quick renewal stereo-picture.
12. system according to claim 9 is characterized in that, among the step B, the light beam of described imaging device projection is colored light beam, and described colored light beam focuses on the back aloft and forms coloured image.
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|---|---|---|---|
| CN2007101780369A CN101175224B (en) | 2007-11-23 | 2007-11-23 | Method and system for implementing solid video picture in air |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101780369A CN101175224B (en) | 2007-11-23 | 2007-11-23 | Method and system for implementing solid video picture in air |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077546A (en) * | 2012-12-27 | 2013-05-01 | 江苏太奇通软件有限公司 | Three-dimensional perspective transforming method of two-dimensional graphics |
| CN108965855A (en) * | 2018-07-12 | 2018-12-07 | 深圳超多维科技有限公司 | A kind of stereoprojection method, apparatus, equipment and storage medium |
| CN111290133A (en) * | 2018-12-06 | 2020-06-16 | 佳能株式会社 | Display device and display method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2485671Y (en) * | 2001-06-22 | 2002-04-10 | 王忻 | 3D image instrument |
| CN2546903Y (en) * | 2002-02-06 | 2003-04-23 | 滕冠军 | Space three-dimensional image demonstration apparatus |
-
2007
- 2007-11-23 CN CN2007101780369A patent/CN101175224B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077546A (en) * | 2012-12-27 | 2013-05-01 | 江苏太奇通软件有限公司 | Three-dimensional perspective transforming method of two-dimensional graphics |
| CN103077546B (en) * | 2012-12-27 | 2015-10-28 | 江苏太奇通软件有限公司 | The three-dimensional perspective transform method of X-Y scheme |
| CN108965855A (en) * | 2018-07-12 | 2018-12-07 | 深圳超多维科技有限公司 | A kind of stereoprojection method, apparatus, equipment and storage medium |
| CN111290133A (en) * | 2018-12-06 | 2020-06-16 | 佳能株式会社 | Display device and display method |
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| CN101175224B (en) | 2010-08-18 |
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