CN101038421B - Volumetric 3D display system based on multiple projectors rotating screen - Google Patents
Volumetric 3D display system based on multiple projectors rotating screen Download PDFInfo
- Publication number
- CN101038421B CN101038421B CN2007101078874A CN200710107887A CN101038421B CN 101038421 B CN101038421 B CN 101038421B CN 2007101078874 A CN2007101078874 A CN 2007101078874A CN 200710107887 A CN200710107887 A CN 200710107887A CN 101038421 B CN101038421 B CN 101038421B
- Authority
- CN
- China
- Prior art keywords
- projector
- image
- dimensional
- rotary screen
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Projection Apparatus (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a multiple projector rotating screen based 3D display system, including: one rotating screen, driven by motor; an image processing device, decomposes the 3D physical model in the cylindrical coordinate system in a series of multiple angular 2D images and sent to the data processing unit of all projectors; at least two projectors arranged around the rotating screen, synchronously project a 2D image with the corresponding angle on one of the rotating screen, thereby restructured the 3D image similar with that of actual objects. The invention may improve the updating rate, resolution and gray step-scale, based on the current available technical level of software and hardware, the lower cost, high display effect of 3D display device may be manufactured.
Description
Technical field
The present invention relates to a kind of body dimension display technologies, more particularly, relate to a kind of body dimension display technologies, can be widely used in fields such as meteorologic analysis, medical imaging, air traffic control, military simulation, machinery assembling based on multi-projector rotating panel.
Background technology
3-D display can provide directly perceived, natural AC mode, helps people after the various depth cueings of integrated use, obtains true, abundant, reliable sensory experience, is the inevitable development trend of display technique.Can only provide limited stereoscopic right by means of the stereoscopic 3-D display of glasses or skew ray grid, display effect is limited, and human eye assembles and regulate and can not mate when observing, and watches eyes harmful for a long time.Holography dynamically shows the data transmission of magnanimity and is stored on the present technical merit unrealistic substantially.The body dimension display technologies can satisfy " directly visual, full angle is visual and group look " etc. a series of requirements, on technology realization and display effect, all relatively have superiority, thereby in fields such as meteorologic analysis, medical imaging and air traffic control and military simulation, have broad application prospects.
In recent years, true 3-D display has been done a large amount of research both at home and abroad, proposed a series of displaying scheme, mainly can be divided into volume silent oscillation and volume and scan type two major types.
The body of volume silent oscillation show be by suitable mode encourage or the static volume of addressing in display medium, and refresh with the speed that is higher than the human eye flicker fusion frequency, so that produce volumetric pixel, constitute the volume image that loads on truly in the three-dimensional real space thus in each space specified position.This class body shows according to the display medium difference, can be divided into following three types again.1) the volume silent oscillation based on the photolytic activity medium shows; this demonstration is usually based on two step of the double frequency process of motivation; require the photolytic activity medium to have three and increase progressively energy level; can show the two-photon absorption of two different wave lengths; send ground state-intermediate state serially in intersection, the conversion of intermediate state-excited state.Like this, the decay when excited state is returned ground state will be accompanied by the emission of optical photon.Shortcoming is the display medium that lacks suitable driving source and have abundant phototranstormation efficiency; 2) the volume silent oscillation based on passive matrix shows, utilizes multilayer liquid crystal to constitute the demonstration volume, and original three-dimensional image is resolved into a plurality of two-dimensional section images, explains corresponding two-dimensional image information with a plurality of liquid crystal layers respectively then.Because the response time of liquid crystal is long, display device is extremely complicated, and operability is not high; 3) the volume silent oscillation based on active matrix shows, this scheme utilizes light-emitting component to constitute uniform, isotropic cubical array in physical space, each element is corresponding to a self luminous physical size unit, can be by addressing optionally and the organizator pixel.Shortcoming is that the size of cubical array is directly related with the scope of image space, size of element own and interval determination the fine and smooth degree of shown image, be electrically connected complexity, the volumetric pixel density refractory is to satisfy application requirements.
The body that volume scans type shows it is the cyclical movement that utilizes a two-dimensional surface, pretreated original three-dimensional information is presented at chronologically fast some places, locus of scanning on this surface, refresh with the speed that is higher than the human eye flicker fusion frequency again, constitute the reproduced image that truly loads in the three-dimensional real space therefrom.The true 3-D display of this class can be divided into following two class modes again according to the difference of screen motion mode: 1) volume that moves based on plane screen scans type and shows, the motion in one dimension by projection screen produces scanning of two dimensional image.Because be difficult to produce the high frequency mechanical drive system of the practical yardstick that reaches big, therefore, System Operation mechanism has limited the mobile range of target screen, causing this volume that moves based on plane screen to scan the type scheme can't promote; 2) volume based on the plane screen rotation scans the type demonstration, mainly contains based on the volumetric 3 D display system of single projector rotating panel and the volumetric 3 D display system that rotates based on two-dimentional LED screen.
At present, employed based on the body three-dimensional display apparatus of single projector rotating panel based on DMD
TMThe frame frequency of the three-chip type projection engine of technology is about 5KHz, and the volumetric pixel total number of positions reaches 116,785,152, body refresh rate 30Hz; Can realize that 3～21bit color range shows, when the volumetric pixel sum of reality activation was consistent with the volumetric pixel total number of positions, the image of reproduction can only comprise 2
3Plant color; When the volumetric pixel sum that activates when reality was less than the volumetric pixel total number of positions, the multipotency of the image of reproduction comprised 2
21Plant color.Because this system has adopted soft, the hardware facility of representing the contemporary science and technology development level, so its production cost is quite high, and operation and maintenance cost is also quite expensive.Simultaneously its body resolution 768 * 768 * 198 of providing mainly has benefited from the resolution 768 * 768 of projected image, and total width of cloth number of projected image is difficult to break through 198 again owing to be subjected to the restriction of projector frame frequency.Cause the power of lighting source can not be too big owing to adopted single projector, dmd chip to be in heating problem under the strong illumination for a long time, thereby the brightness of display image be restricted.
Body display system based on the rotation of two-dimentional LED screen shows 3-D view by the LED that lights on rotary screen.Because image forming appts has brought difficulty on rotary screen, for data transmission and electric power supply.The screen single face is luminous, for comprehensive visual, can only improve the rotating speed of rotary screen, has not only increased the requirement that volume of transmitted data has also improved mechanical system simultaneously.The size of LED luminous die is bigger, and screen size has in limited time, and resolution can not be very high.
Summary of the invention
Therefore, the present invention proposes in order to address the above problem, its purpose is to provide a kind of body dimension display technologies based on multi-projector rotating panel, adopt multi-projector multi-angle projection mode, in the refresh cycle, multi-projector timesharing exposure, each projector projection piece image, reduced requirement, thereby improved refresh rate, resolution and GTG greatly projector.Multi-projector multi-angle projection mode makes the parallel transmission of view data become possibility, has broken through the existing image data transmission rate bottleneck of single projector and LED rotary screen mode.
For achieving the above object, the invention provides a kind of volumetric 3 D display system, comprising based on multi-projector rotating panel:
One rotary screen is rotated by driven by motor;
At least two projectors put around rotary screen, and 0 °-180 ° is the projector at odd number angle, and 180 °-360 ° is the projector at even number angle;
Image processing apparatus resolves into three-dimensional object model the two dimensional image of a series of multi-angles and sends the data processing unit of each projector in cylindrical coordinate;
On a Rotation screen, this two dimensional image is the two-dimensional section image of corresponding angle three-dimensional body with a two dimensional image synchronized projection of corresponding angle in projector; The light source of described projector is with a kind of white light stroboscopic light source that substitutes the required high brightness of projector, high repetition based on the high brightness synchronous lighting divider of continuous light source, when rotary screen rotates, the projector at the projector at odd number angle and even number angle is alternately exposure on the diameter direction, rotary screen rotates 180 °, all projector's exposures once, finish a 3-D view refresh cycle, reconstruct the true 3-D view of 360 ° of complete range of observation.
The preferably, required projector's quantity is 180 when satisfying 1 ° of angular resolution and require, and is 360 during 0.5 ° of angular resolution.
The preferably, wherein said rotary screen is the two-way dispersion screen.
The preferably, the spatial light modulation device of wherein said projector is LCD (LiquidCrystal Display), DMD (Liquid Crystal Display) or LCOS (LiquidCrystal on Silicon).
The preferably, wherein said image processing apparatus is computing machine or other treating apparatus.
The preferably, the high brightness synchronous lighting divider of wherein said continuous light source is a reflected light path, or glass bar, sticking plaster or other biography luminescent material.
Description of drawings
Fig. 1 is the schematic perspective view of multi-projector rotating panel volumetric 3 D display system of the present invention;
Fig. 2 is for adopting the synchronous lighting divider of catoptron;
Fig. 3 is for adopting the synchronous lighting divider that passes light beam;
Fig. 4 is for adopting the volumetric 3 D display system of the two-way dispersion screen and the multi-projector of synchronous light source divider;
Projector put when Fig. 5 was employing two-way dispersion screen and synchronous light source divider.
Embodiment
Below in conjunction with one of application of the present invention--the head medical treatment shows that the present invention will be further described.The visual scene that the body 3-D display provides is transparent, and in the medical imaging field, in order to carry out pathological diagnosis better, the object that requires to be studied is displayed on the corresponding physiological location according to original appearance, each other any blocking can not be arranged.Native system obtains a series of two dimensional images with CT scan and carries out three-dimensional modeling, in cylindrical coordinate, three-dimensional model is resolved into the two dimensional image of a series of multi-angles again, by a plurality of projectors multi-angle with the two dimensional image synchronized projection of corresponding angle on a Rotation screen, thereby reconstruct the 3-D view similar, help the diagnosis state of an illness to real-world object.
According to the size of general head, native system adopts the rotary display screen of 320mm * 240mm.Projector adopts the true color LCDs of 320 * 240 resolution, for avoiding low excessively flicker, the frame frequency of employing 30Hz, 180 projectors of week use of causing of picture frame frequency.Screen adopts the two-way dispersion screen, can effectively reduce quantity, the reduction screen rotating speed of projector.
As shown in Figure 4, two-way dispersion shields by motor 1 driven rotary, and light source is through the reverse outgoing of diameter respectively of two-way reflective mirror up and down.And by motor 2 drive catoptrons and screen rotation synchronously.The light source focus is got to when passing light beam incident end, and corresponding projector (write image in advance and be in the wait shape) exposes and is imaged on the screen, all can see image at 360 ° of circumferencial directions.1 ° of angular resolution, 180 projectors as if 0.5 ° of angular resolution, then need 360 projectors.Projector is in circumferential directions, and as shown in Figure 5, wherein 0～180 ° is the projector at odd number angle, and 180 °～360 ° is the projector at even number angle, the projection of institute of projector be the cross-sectional image of corresponding angle three-dimensional body.When screen rotates, alternately exposure on the odd even projector diameter direction, screen rotates 180 °, and all projector's exposures are once finished a 3-D view refresh cycle, reconstruct the true 3-D view of 360 ° of complete range of observation.
Image processing apparatus in the system adopts PC, by PC CT scan is obtained a series of two dimensional images and carry out three-dimensional modeling, in cylindrical coordinate, three-dimensional model is resolved into the two dimensional image of a series of multi-angles again, then image is transferred to projector and carries out 3-D display.Owing to watch CT scan figure not need in real time, so can adopt earlier a series of images data transmission of handling well in the PC is shown to behind the buffer memory of each projector again, can transmit some information to the data processing unit of each projector in real time by PC during demonstration, for example need some characters that superpose or simple image information etc., finish the stack of character picture etc. by data processing unit.If need to show in real time 3-D view, show in real time that owing to body is three-dimensional the image data transmission rate is had very high requirement, adopt the separate unit PC can not satisfy the needs of data transmission substantially.For satisfying the needs of data transmission, can develop the computer card of PCI-E interface, on the basis of the data transmission rate that improves the separate unit PC, adopt the transmission of multiple pc machine parallel data.In order to guarantee the multiple pc machine in transmission basic synchronization during data, be provided with wherein one as main control computer, finish synchro control by the integrated circuit board of PCI-E to all PCs.
For those skilled in the art; after having understood content of the present invention; can be under the situation that does not deviate from the principle and scope of the present invention; the method according to this invention is carried out various corrections and the change on form and the details, but these are based on correction of the present invention with change still within claim protection domain of the present invention.
Claims (6)
1. volumetric 3 D display system based on multi-projector rotating panel, this system comprises:
One rotary screen is rotated by driven by motor;
At least two projectors put around rotary screen, and 0 °-180 ° is the projector at odd number angle, and 180 °-360 ° is the projector at even number angle;
Image processing apparatus resolves into three-dimensional object model the two dimensional image of a series of multi-angles and sends the data processing unit of each projector in cylindrical coordinate; It is characterized in that,
On rotary screen, this two dimensional image is the two-dimensional section image of corresponding angle three-dimensional body with a two dimensional image synchronized projection of corresponding angle in projector; The light source of described projector is with a kind of white light stroboscopic light source that substitutes the required high brightness of projector, high repetition based on the high brightness synchronous lighting divider of continuous light source, when rotary screen rotates, the projector at the projector at odd number angle and even number angle is alternately exposure on the diameter direction, rotary screen rotates 180 °, all projector's exposures once, finish a 3-D view refresh cycle, reconstruct the true 3-D view of 360 ° of complete range of observation.
2. system according to claim 1, required projector's quantity is 180 when satisfying 1 ° of angular resolution and require, and is 360 during 0.5 ° of angular resolution.
3. system according to claim 1 is characterized in that described rotary screen is the two-way dispersion screen.
4. system according to claim 1, the spatial light modulation device that it is characterized in that described projector is LCD, DMD or LCOS.
5. system according to claim 1 is characterized in that described image processing apparatus is computing machine or other treating apparatus.
6. system according to claim 1 is characterized in that the high brightness synchronous lighting divider of described continuous light source is a reflected light path, or glass bar, sticking plaster or other biography luminescent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101078874A CN101038421B (en) | 2007-05-22 | 2007-05-22 | Volumetric 3D display system based on multiple projectors rotating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101078874A CN101038421B (en) | 2007-05-22 | 2007-05-22 | Volumetric 3D display system based on multiple projectors rotating screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038421A CN101038421A (en) | 2007-09-19 |
| CN101038421B true CN101038421B (en) | 2010-12-01 |
Family
ID=38889413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101078874A Expired - Fee Related CN101038421B (en) | 2007-05-22 | 2007-05-22 | Volumetric 3D display system based on multiple projectors rotating screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101038421B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290467B (en) * | 2008-06-05 | 2010-06-16 | 北京理工大学 | Tangible real three-dimensional display method based on multi- projector rotating panel three-dimensional image |
| CN102254515B (en) * | 2008-10-31 | 2013-04-24 | 浙江大学 | Parallel LED drive system based on three-dimensional display |
| CN101982806A (en) * | 2010-09-17 | 2011-03-02 | 浙江大学 | Large-size spatial 3D cinema projection optical system and method |
| CN102520787B (en) * | 2011-11-09 | 2015-05-06 | 浙江大学 | Real-time spatial three-dimensional presentation system and real-time spatial three-dimensional presentation method |
| CN102566234B (en) * | 2012-01-12 | 2015-04-22 | 北京理工大学 | Light-guiding type white light synchronous illuminating device for multi-projector true three-dimensional displayer |
| CN102566390B (en) * | 2012-01-12 | 2016-05-25 | 北京理工大学 | Evenly scattering medium is accepted light distribution optimization method and the display system thereof of color three dimension hologram image |
| CN102722031B (en) * | 2012-06-18 | 2014-05-07 | 上海卫星工程研究所 | Optical system of laser true three-dimensional display |
| CN102929089B (en) * | 2012-11-19 | 2015-08-19 | 北京理工大学 | A kind of lighting device improving multi-projector formula true three-dimansioual display resolution |
| CN103676449A (en) * | 2013-12-12 | 2014-03-26 | 北京理工大学 | Non-scanningtype naked eye three-dimensional display device based on reflection-type scattering screen |
| CN103731622B (en) * | 2013-12-27 | 2017-02-15 | 合肥市艾塔器网络科技有限公司 | Three-dimensional surface projection presentation system provided with single projector |
| CN103995426B (en) * | 2014-05-29 | 2015-11-18 | 清华大学深圳研究生院 | A kind of stereo projection display apparatus |
| CN104506919B (en) * | 2014-12-26 | 2018-08-31 | 上海昭宁信息科技有限公司 | Show the synchronous method and its system of content and display screen movement |
| CN106162120A (en) * | 2016-06-30 | 2016-11-23 | 联想(北京)有限公司 | A kind of optical projection system and projecting method |
| JP6927103B2 (en) * | 2018-03-19 | 2021-08-25 | オムロン株式会社 | Display device and display method and gaming machine |
| KR20200143381A (en) | 2018-04-16 | 2020-12-23 | 소니 주식회사 | Image display device |
| CN108471527A (en) * | 2018-05-10 | 2018-08-31 | 张文虎 | A kind of scan-type full angle bore hole 3D display technology |
| CN110505465B (en) * | 2019-08-30 | 2022-08-23 | 京东方科技集团股份有限公司 | Data transmission method, three-dimensional image display method and device and electronic equipment |
| CN110557576B (en) * | 2019-09-27 | 2021-06-29 | 高新兴科技集团股份有限公司 | Stroboscopic lamp synchronous control method based on video |
| CN114830639B (en) | 2020-11-19 | 2024-07-30 | 京东方科技集团股份有限公司 | Display device |
| CN113076001B (en) * | 2021-04-07 | 2022-08-09 | 湖南汽车工程职业学院 | Intelligent 3D model modeling and holographic display system for art design |
| CN112987334A (en) * | 2021-04-13 | 2021-06-18 | 西安螺恪丝电子科技有限公司 | Three-dimensional display device, three-dimensional display method and application |
| CN113422948B (en) * | 2021-06-30 | 2022-07-15 | 华中科技大学 | Slicing type three-dimensional image display method and system based on position matching |
-
2007
- 2007-05-22 CN CN2007101078874A patent/CN101038421B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101038421A (en) | 2007-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101038421B (en) | Volumetric 3D display system based on multiple projectors rotating screen | |
| CN101290467B (en) | Tangible real three-dimensional display method based on multi- projector rotating panel three-dimensional image | |
| TW540228B (en) | Three-dimensional display systems | |
| Balogh et al. | Holovizio 3D display system | |
| Gately et al. | A three-dimensional swept volume display based on LED arrays | |
| CN103885280B (en) | Real three-dimensional display system based on mixing screen and method | |
| CN101594547B (en) | Parallel output true three-dimensional display method based on two-dimensional LED rotary screen | |
| CN101783966A (en) | Real three-dimensional display system and display method | |
| CN103207513A (en) | True three-dimensional displayer | |
| Geng | A volumetric 3D display based on a DLP projection engine | |
| CN103048867A (en) | True three-dimensional display system of multi-mode hybrid projection | |
| WO2011091660A1 (en) | Three-dimensional imaging method, imaging system, and imaging device | |
| CN101881922A (en) | True three-dimensional display system | |
| CN103048869B (en) | High-visual angle resolution 360-degree visual field three-dimensional displaying device and method | |
| CN105093551B (en) | Real tri-dimension display system during landscape environment shows in real time and display packing | |
| CN104298065A (en) | 360-degree three-dimensional display device and method based on splicing of multiple high-speed projectors | |
| CN107290864A (en) | It is a kind of based on the body three-dimensional display apparatus and method that circumferentially shield scanning | |
| JP4605509B2 (en) | Three-dimensional stereoscopic image display device | |
| JP4605507B2 (en) | Three-dimensional stereoscopic image display device | |
| CN106842595A (en) | The directive property backlight type bore hole 3D display device and method of control can be overlapped | |
| CN103064244B (en) | Based on true color 360 ° of three-dimensional display apparatus and the method for high-speed projector | |
| CN103777915B (en) | Immersion interactive system | |
| CN103048868A (en) | True color 360-degree field of vision three-dimensional display device and method based on combined screen | |
| US20030223043A1 (en) | High resolution 3 dimensional image generator | |
| Tsao et al. | Moving screen projection: a new approach for volumetric three-dimensional display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20120522 |