CN101800907B - Method and device for displaying three-dimensional image - Google Patents
Method and device for displaying three-dimensional image Download PDFInfo
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Abstract
The invention relates to a method and a device for displaying a three-dimensional image, belonging to the technical field of digital three-dimensional multimedia. In order to improve the performance and viewing mode of the current digital sand table and eliminate the problems of display gaps and oblique cone distortion, the invention provides a method for displaying a three-dimensional image, which comprises the following steps: determining the positions of an image display screen and a user observation point according to the spatial layout and the structure; carrying out image edge fusion splicing processing on the image data; correcting the three-dimensional image oblique viewing cone of the image data; and projecting and displaying the processed image. The technical scheme ensures the integrity and the aesthetic property of the displayed image, expands the use mode of the digital sand table, really realizes the three-dimensional perspective effect of the projected image, and greatly improves the application capability of the digital sand table in the aspects of urban planning, design, exhibition and the like.
Description
Technical field
The invention belongs to the digital three-dimensional multimedia technology field, be specifically related to a kind of method and device of showing 3-D view.
Background technology
Digital sand table has received increasing concern as a kind of novel model form of expression, and it possesses following characteristics with respect to traditional physics sand table:
(1) digital sand table can seamlessly amplify and contraction scale
The engineer's scale of physics sand table is fixed, and for the sand table of 1: 25 ten thousand engineer's scale, the highest Mountain Everest also has only the 35cm height on sand table.City, Beijing overall model in the planning shop, Beijing, area reaches about 600 square meters, and engineer's scale is 1: 750.But 250 meters wherein the highest three phases of international trade also have only the 33cm height, and common building is just littler, and 30 meters building also has only the 4cm height.Other large tracts of land model case is also similar, and because the people can't enter in the model, the nucleus in the middle of the model does not often see Chu.
Digital sand table can load the data of different proportion chi dynamically, realizes that seamless amplification dwindles.Can be amplified to China since an earth that slowly rotates, be amplified to North China again, be amplified to province, arrive the city again, even can represent the threedimensional model of building monomer.Round nucleus, digital sand table can slowly rotate, and fully represents all angles of sand table, removes allowing the people walk about around sand table from.
(2) the abundant presenting information data of digital sand table.
The physics sand table adopts titles such as mode mark road, river, building such as label, can not further represent more detailed information data again.For digital sand table, each pel on the sand table space, the inquiry that its abundant attribute data can be detailed as required and representing.
(3) the digital sand table place can multi-functionally be used.
The physics sand table has fixedly occupied the place of equivalent area, simultaneously, also is difficult for sweeping after falling to going up dust.And digital sand table is a projection white space, spread carpet on the ground after, can be used as multifunctional hall and use.The stage special efficacy can also be moulded by projector, and facade projection's curtain can be used as the performance screen.
But digital sand table is owing to also there is following defective in the reason of each side at present:
(1) the present display mode of most of digital sand tables on the market is that a plurality of display screens composition Dan Ping show, this display structure is on the one hand because a plurality of the small screen is formed a large-screen, thereby the inevasible physically physical-gap that causes between screen, thereby make the projection screen displayed image can't keep view picture complete, exist the people for cutting apart; In projection process, there are factors such as time-delay, signal interference owing to the projection unit on the other hand, thereby cause the chemical slit that exists on the display screen to a certain degree; In the digital sand table procedure for displaying, the existence in slit easily causes image to show pollution, makes the observer that the lines of image lines that show and splicing system itself mistake is one easily, thereby causes making a strategic decision and the research error.
(2) single screen display structure is owing to have only a display screen, make its information representation ability have very big bottleneck, the visitor can only accept the information in the two-dimentional quadrant at one time, the shortcoming that this information representation mode has more and more been limited in the information age of develop rapidly has day by day showed.
(3) be that the digital sand table watching mode all is to watch from horizontal plane mostly,,, be difficult to see overall picture if the beholder goes from horizontal direction for horizontally disposed large scale screen.
(4) when height is watched the three-dimensional display screen in the air, in order to prevent that sight line is blocked, point of observation generally can be directly over the ground curtain, from top view, point of observation is often at the center at certain edge of curtain, ground, and this has just caused point of observation and ground curtain to constitute a stravismus awl.If we throw into a secondary normal 3-D view on the ground curtain, the picture of seeing will produce a perspective distortion, a normal building seems to become very short, and Facade of Architecture seems also can tilt, and is that cubical model has seemed into a very short terrace with edge originally.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to improve image exists always in the demonstration form of expression of present multidimensional image and watching mode, the elimination projection process gap problem and watch in the high-altitude and to exist image that the problem of stravismus awl distortion is arranged in the process under the stravismus state, make in the image playing process, provide more lively, vivid three-dimensional image viewing experience to the user.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of method of presenting three-dimensional image, described method represents system by 3-D view and finishes representing of 3-D view, and described 3-D view represents system and comprises: database is used to store and export the 3 d image data for the treatment of projection; Main control computer is used to generate the three-dimensional image projection parameter, and is distributed to the node machine; The node machine, described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display screen; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
Described method comprises:
The setting of display screen orientation and user's point of observation are provided with step: be horizontally disposed with curtain main screen in ground on the ground in space representing, user's point of observation position be arranged in the air, the user watch from top to bottom at this place act main screen;
The three-dimensional image projection parameter is determined and forwarding step: main control computer is determined the three-dimensional image projection parameter, and the three-dimensional image projection parameter is distributed to some node machines;
The three-dimensional image projection step: every node machine is according to the three-dimensional image projection parameter extraction 3 d image data that receives, and 3 d image data is carried out the projection pre-treatment, indicates some projectors to carry out projection afterwards;
Wherein, the definite forwarding step that reaches of described three-dimensional image projection parameter specifically comprises:
Three-dimensional image projection parameter extraction step: main control computer extracts screen position parameter and user's point of observation location parameter, and determine display screen viewing area parameter, camera parameter and view field of separate unit projector parameter, and determine to treat the 3 d image data parameter of projection according to current projection scheme according to screen position and user's point of observation position; Three-dimensional image projection parameter allocation step: main control computer is distributed to the node machine with described user's point of observation location parameter, display screen viewing area parameter, camera parameter, view field of separate unit projector parameter and 3 d image data parameter;
Wherein, the described projection pre-treatment that 3 d image data is carried out comprises 3-D view transparent effect aligning step; Described 3-D view transparent effect aligning step specifically comprises: stravismus state model constitution step: the node machine simulates point of observation viewed status threedimensional model under the stravismus state not directly over the viewing area time according to display screen viewing area parameter and user's point of observation location parameter; The projection matrix aligning step: the viewed status threedimensional model under the stravismus state that the node machine obtains according to described simulation calculates proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.
The orientation setting of described display screen and user's point of observation are provided with step and also comprise: be the vertical direction configuration information at ground curtain main screen one end and show auxilliary screen, user's viewing information in the horizontal direction shows auxilliary screen.
Projector's quantity is greater than three in the described optical projection system.
Described node machine carries out the projection pre-treatment to 3 d image data and also comprises:
3-D view edge fusion treatment step: the node machine carries out edge anastomosing and splicing operation according to the three-dimensional image projection parameter to the image of projector projection overlapping region.
Described 3-D view edge fusion treatment step specifically comprises:
View field of separate unit projector determining step: the node machine is determined the view field of each projector according to view field of the separate unit projector parameter that receives;
The overlapping region generates step: the node machine carries out location confirmation to the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification step: the node machine carries out the coordinating and unifying to the displaying contents in the overlapping region, and displaying contents is consistent;
Overlapping region emergence step: the node machine carries out the unification operational processes to the brightness of described overlapping region and remaining Non-overlapping Domain;
The geometry deformation aligning step: the node machine is corrected the projected image deformation effect, guarantees the images match splicing in the projection overlapping region;
The color correction step: the node machine carries out the unification operational processes to colour temperature and colour gamut that full-screen image shows each other.
In addition, the present invention also provides a kind of device of presenting three-dimensional image, comprises display system, is used to receive projection and carries out 3 d image data information show; Optical projection system is used for carrying out image projection according to control command; Main control computer, be used to generate the three-dimensional image projection parameter, the three-dimensional image projection parameter comprises display screen viewing area parameter, user's point of observation location parameter and view field of separate unit projector parameter, and main control computer is used for described three-dimensional image projection parameter is distributed to the node machine; The node machine, described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display system; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
Described display system comprises ground curtain display screen;
Described ground curtain display screen is provided with in horizontal direction;
Described ground curtain display screen is the monoblock screen.
Described node machine comprises the perspective correction system, described perspective correction system specifically comprises: stravismus state model tectonic system is used for simulating point of observation viewed status threedimensional model under the stravismus state not directly over view field the time according to display screen viewing area parameter and user's point of observation location parameter; Projection matrix corrective system, the viewed status threedimensional model under the stravismus state that is used for obtaining according to described simulation calculate proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.Described display system also comprises information display screen;
Described information display screen is the vertical direction setting at an end of described ground curtain display screen;
Described information display screen is the monoblock screen.
Projector's quantity is greater than three in the described optical projection system.
Described node machine also comprises seamless emerging system, and described seamless emerging system specifically comprises:
View field determines system, and view field of the separate unit projector parameter that is used for receiving according to it is determined the view field of each projector;
The overlapping region generation system is used in projection process, and location confirmation is carried out in the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification system is used for the displaying contents of overlapping region is carried out the coordinating and unifying, and displaying contents is consistent;
Overlapping region emergence system is used for the brightness of projection overlapping region and Non-overlapping Domain is regulated, and guarantees that brightness is consistent;
The geometry deformation corrective system is used to correct the projected image deformation effect, guarantees the images match splicing of projection overlapping region;
Color corrected system is used for coordinating each other to guarantee that at each node machine colour temperature and colour gamut that full-screen image shows are consistent;
Multichannel Coordination Treatment system is used to coordinate the operation between above-mentioned each system, adjusts splicing, fusion, distortion and the color parameter of above-mentioned each system's output channel.
(3) beneficial effect
There is following some feature in technical scheme contrast prior art provided by the present invention:
1, because display screen adopts the view picture screen, thus physical-gap between the screen that traditional splicing exists eliminated, thus make projection screen displayed image view picture be kept perfectly, unmanned for cutting apart.And after adopting seamless fusion treatment technology, more eliminated optical slot, compare with the common welding system of fighting recklessly like this, on technical merit and display effect, the difference and the raising of matter have just been arranged, thereby make the image of demonstration in full accord, do not have any physics or optical segmentation, guaranteed the integrality and the aesthetic property of display image;
2, adopt the polylith screen to show simultaneously, support the synchronous display structure of multi-screen, the real occupation mode that realizes having broken through traditional digital sand table, limited display mode and display space have been jumped out, expanded the digital sand table occupation mode, improved the application of digital sand table greatly at aspects such as the urban planning design represent;
3, by the perspective correction system picture that outputs on the ground curtain is carried out the rectification of a stravismus awl, thereby realize that really the image that projection goes out is the three-dimensional perspective effect, the user sees that from eminence can obviously know from experience the three-dimensional that looks down from the high-altitude experiences;
4, the interactive mode by man-machine interactive system is for the user provides comprehensive, multi-functional operating experience.
Description of drawings
The method step schematic diagram of the presenting three-dimensional image that Fig. 1 is provided for the embodiment of the invention 1;
The schematic diagram of the 3-D view edge fusion treatment step that Fig. 2 is provided for the embodiment of the invention 1;
The schematic diagram of the 3-D view perspective correction step that Fig. 3 is provided for the embodiment of the invention 1;
The schematic diagram of the relative position in the method for the presenting three-dimensional image that Fig. 4 is provided for the embodiment of the invention 1 between user and the device;
The architectural feature schematic diagram of the device of the presenting three-dimensional image that Fig. 5 is provided for the embodiment of the invention 2;
The architectural feature details and the functional schematic of the device of the presenting three-dimensional image that Fig. 6 is provided for the embodiment of the invention 2;
The node machine internal structure schematic diagram that Fig. 7 is provided for the embodiment of the invention 2;
The structural representation that display system and optical projection system constituted in the device of the presenting three-dimensional image that Fig. 8 is provided for the embodiment of the invention 2;
Double-Screen Display System schematic diagram in the device of the presenting three-dimensional image that Fig. 9 is provided for the embodiment of the invention 2;
Multihead display system schematic in the device of the presenting three-dimensional image that Figure 10 is provided for the embodiment of the invention 2.
Embodiment
For making purpose of the present invention, content and advantage clearer,, the specific embodiment of the present invention is described in further detail below in conjunction with drawings and Examples.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Embodiment 1
Present embodiment specifically describes the method for a kind of presenting three-dimensional image that technical solution of the present invention provided.
Described method represents system by 3-D view and finishes representing of 3-D view, and described 3-D view represents system and comprises: database is used for storing and export to the 3 d image data for the treatment of projection according to user instruction; Main control computer is used to generate the three-dimensional image projection parameter, specifically comprises according to the positional information of display screen and user's point of observation determining camera parameter and projective parameter, determines GIS parameters such as image, model and landform again, and is distributed to the node machine; The node machine, described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display screen; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
As shown in Figure 1, described method comprises:
The setting of display screen orientation and user's point of observation are provided with step: as shown in Figure 4, representing on the ground in space, ground curtain screen 401 is provided with in horizontal direction, information display screen 402 is the vertical direction setting at an end of ground curtain screen, ground curtain screen projector system 403 is arranged at directly over the ground curtain screen 401, and information screen projector system 404 is arranged at the information display screen offside; User's point of observation position is arranged in the air, and the user watches ground curtain and viewing information screen in the horizontal direction from top to bottom at this place.Because digital sand table still is a sand table, so still defer to the characteristic of physics sand table, the people is to bow to see when appreciating the physics sand table, under the bigger situation of projected area, needs high visual angle can see that just full figure resembles panorama; Because the image that projection goes out is a transparent effect, the people sees that from eminence the sensation of looking down from the high-altitude is arranged seemingly.Be divided into space screen and information screen on the digital sand table structure, see from eminence and can see two imaging on the screen simultaneously clearly;
The three-dimensional image projection parameter is determined and forwarding step: main control computer is determined the three-dimensional image projection parameter, and the three-dimensional image projection parameter is distributed to some node machines;
The three-dimensional image projection step: every node machine is according to the three-dimensional image projection parameter extraction 3 d image data that receives, and some projectors of indication carried out projection after 3 d image data carried out the projection pre-treatment.
Projector's quantity is more than or equal to three in the described optical projection system.
Described three-dimensional image projection parameter comprises display screen viewing area parameter, user's point of observation location parameter and view field of separate unit projector parameter;
Described 3-D view parameter is determined and forwarding step specifically comprises:
Three-dimensional image projection parameter extraction step: main control computer extracts screen position parameter and user's point of observation location parameter, and determines display screen viewing area parameter, camera parameter and view field of separate unit projector parameter according to screen position and user's point of observation position; And determine to treat the 3 d image data parameter of projection according to current projection scheme;
Three-dimensional image projection parameter allocation step: main control computer is distributed to the node machine with described user's point of observation location parameter, display screen viewing area parameter, camera parameter, view field of separate unit projector parameter and 3 d image data parameter;
Described three-dimensional image projection step specifically comprises:
The 3 d image data extraction step: the node machine extracts corresponding 3 d image data according to the three-dimensional image projection data parameters of receiving from main control computer from database;
3 d image data is handled and projection step: the node machine carries out the projection pre-treatment to 3 d image data, sends instruction then and controls many projectors and carry out projection operation to generate 3-D view;
Described node machine carries out the projection pre-treatment to 3 d image data and comprises:
3-D view edge fusion treatment step: the node machine carries out edge anastomosing and splicing operation according to the three-dimensional image projection parameter to the image of projector projection overlapping region;
3-D view transparent effect aligning step: the node machine carries out treatment for correcting to the three-dimensional perspective effect under the projected image stravismus state.Comprise that specifically the picture to outputing on the ground curtain carries out the rectification of a stravismus awl, the method for this distortion is exactly that the stravismus awl of simulating in the actual projection environment carries out three-dimensional rendering, no matter be playing up of film or playing up of real-time, interactive.Concrete grammar is exactly to project to the zone on the ground curtain and the position of point of observation according to each projector, calculates an asymmetric cone, obtains projection matrix, utilizes OpenGl or Direct3D to draw.
As shown in Figure 2, described 3-D view edge fusion treatment step specifically comprises:
View field of separate unit projector determining step: the node machine is determined the view field of each projector according to view field of the separate unit projector parameter that receives;
The overlapping region generates step: the node machine carries out location confirmation to the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification step: the node machine carries out the coordinating and unifying to the displaying contents in the overlapping region, and displaying contents is consistent;
Overlapping region emergence step: the node machine carries out the unification operational processes to the brightness of described overlapping region and remaining Non-overlapping Domain;
The geometry deformation aligning step: the node machine is corrected the projected image deformation effect, guarantees the images match splicing in the projection overlapping region;
The color correction step: the node machine carries out the unification operational processes to colour temperature and colour gamut that full-screen image shows each other.
As shown in Figure 3, described 3-D view transparent effect aligning step specifically comprises:
Stravismus state model constitution step: the node machine simulates point of observation viewed status threedimensional model under the stravismus state not directly over the viewing area time according to display screen viewing area parameter and user's point of observation location parameter;
The projection matrix aligning step: the viewed status threedimensional model under the stravismus state that the node machine obtains according to described simulation calculates proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.
Embodiment 2
Present embodiment specifically describes the device of a kind of presenting three-dimensional image that technical solution of the present invention provided.
As shown in Figure 5, described device comprises:
Display system connects described optical projection system, is used to receive the three-dimensional image projection and the information of the carrying out demonstration of described optical projection system;
Optical projection system is used for carrying out image projection according to control command; Described projection unit comprises at least one projector;
Man-machine interactive system is used to provide human-computer interaction interface, receives the instruction that the user provided and sends it to described control system.
Control system, be used to generate the three-dimensional image projection parameter, the three-dimensional image projection parameter comprises display screen viewing area parameter, user's point of observation location parameter and view field of separate unit projector parameter, and control system also sends to the node unit with the three-dimensional image projection parameter; Connect described man-machine interactive system, be used for the integral body of described picture showing device being carried out control operation according to the instruction of described man-machine interactive system; Comprise master control system, described master control system comprises main control computer;
Node unit, the three-dimensional image projection parameter that is used for receiving are distributed to its each node machine that comprises;
Described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from the control system main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display system; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
Wherein, as shown in Figure 9, described display system comprises ground curtain display screen and information display screen at least, and described ground curtain display screen is a main screen, the promptly auxilliary screen of described information display screen;
Described ground curtain display screen is provided with in horizontal direction, and described information display screen is the vertical direction setting at an end of described ground curtain display screen;
Described ground curtain display screen and described information display screen are the monoblock screen.The information screen picture material is 1 or many seamless spliced the forming of projector, and the information screen material can be common projection screen or transparent curtain etc., and shape can be flat curtain or various bent curtains etc.; Ground curtain picture material is 1 or many seamless spliced the forming of projector, and ground curtain material generally is that the advanced material spraying forms, and shape generally is flat curtain.
As shown in figure 10, display system shown in also can be made up of polylith display screen more according to concrete needs; Auxilliary screen, i.e. information display screen can adopt the form of the transparent curtain of monolithic or polylith suspension straggly.When not broadcasting, can't see the existence of curtain on the space, do not influence whole indoor attractive in appearancely, also is a kind of decoration on the space even may be seen indistinctly in other words.Image can present when playing, and visually image is presented on seemingly in the air.
The synchronous renewal of auxilliary screen and main screen displaying contents, the film of information screen and ground curtain complements each other, and the ground curtain is a main body, and auxilliary screen then shows corresponding information literal and caption according to the main screen content synchronization, or even the auxilliary demonstration 2Dgis system of shielding, auxilliary screen shows the 3Dgis system.
Owing to adopt the polylith screen to show simultaneously, support the synchronous display structure of multi-screen, really realized having broken through the occupation mode of traditional digital sand table, limited display mode and display space have been jumped out, expanded the digital sand table occupation mode, improved the application of digital sand table greatly at aspects such as the urban planning design represent.
As shown in Figure 6, described optical projection system comprises ground curtain projection unit and information screen projection unit at least; Quantity is at least three; Accept the instruction of master control system separately respectively by Ethernet and corresponding operating such as play, and all corresponding 1 or many node machines, every corresponding one or more passages of node machine, the corresponding projector of each passage.
As shown in Figure 8, be the structural representation of described ground curtain main screen and described information demonstration spoke screen and described optical projection system, described ground curtain projection unit is positioned at above the described ground curtain display screen; Described information screen projection unit is positioned at the pairing side of described information display screen;
Described ground curtain projection unit and information screen projection unit all comprise a projector at least;
Described projector is used for its pairing display screen is carried out projection operation.
Wherein Fig. 8-1 is the front view of described ground curtain main screen structure that optical projection system pairing with it constitutes, and 801 is projector, and 802 is ground curtain main screen; Fig. 8-2 is the vertical view of described ground curtain main screen and structure that optical projection system constitutes, and 803 is ground curtain main screen, and 804 is projector; The ground pairing optical projection system of curtain main screen adopts 30 6000 lumen projection machine+FreeMedia U30 systems to form, and 298.6 square metres of main screen areas, furred ceiling can provide the digital sand table of 21.75 meters of 13.73 meters * to represent the space apart from 8.37 meters on stage.
The end view of Fig. 8-3 auxilliary screen structure that optical projection system pairing with it constitutes for described information shows, 805 is projector, 806 are the auxilliary screen of information demonstration; Fig. 8-4 is the vertical view that described information shows auxilliary screen and structure that optical projection system constitutes, and 807 is projector, and 808 is the auxilliary screen of information demonstration; The ground pairing optical projection system of curtain main screen adopts 5 6000 lumen projection machine+FreeMedia U5 systems to form, and long-pending 62.8 square metres of auxilliary panel can provide the digital sand table of 18.314 meters of 3.43 meters * to represent the space.
As shown in Figure 6, described node unit comprises ground curtain screen node unit and information screen node unit at least;
Described ground curtain screen node unit and information screen node unit all comprise a node machine at least, and described node machine connects some projectors;
Described ground curtain screen node unit is used for according to the described ground of the commands for controlling of master control system curtain projection unit described ground curtain display screen being carried out projection;
Described information screen node unit is used for according to the described information screen projection of the commands for controlling of master control system unit described information display screen being carried out projection.
Described node machine is used for the three-dimensional image projection parameter that basis is received from main control computer, from database, extract corresponding 3 d image data, then 3 d image data is carried out 3-D view edge fusion treatment and 3-D view transparent effect treatment for correcting, send instruction then and control many projectors and carry out projection operation to generate 3-D view.
As shown in Figure 7, described node machine comprises seamless emerging system, and described seamless emerging system specifically comprises:
View field determines system, and view field of the separate unit projector parameter that is used for receiving according to it is determined the view field of each projector;
The overlapping region generation system is used in projection process, and location confirmation is carried out in the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification system is used for the displaying contents of overlapping region is carried out the coordinating and unifying, and displaying contents is consistent;
Overlapping region emergence system is used for the brightness of projection overlapping region and Non-overlapping Domain is regulated, and guarantees that brightness is consistent;
The geometry deformation corrective system is used to correct the projected image deformation effect, guarantees the images match splicing of projection overlapping region;
Color corrected system is used for coordinating each other to guarantee that at each node machine colour temperature and colour gamut that full-screen image shows are consistent;
Multichannel Coordination Treatment system is used to coordinate the operation between above-mentioned each system, adjusts splicing, fusion, distortion and the color parameter of above-mentioned each system's output channel.
Because display screen adopts the view picture screen, thus physical-gap between the screen that traditional splicing exists eliminated, thus make projection screen displayed image view picture be kept perfectly, unmanned for cutting apart.And after adopting seamless fusion treatment technology, more eliminated optical slot, compare with the common welding system of fighting recklessly like this, on technical merit and display effect, the difference and the raising of matter have just been arranged, thereby make the image of demonstration in full accord, do not have any physics or optical segmentation, guaranteed the integrality and the aesthetic property of display image;
Described node machine also comprises the perspective correction system, and described perspective correction system specifically comprises:
Stravismus state model tectonic system is used for simulating point of observation viewed status threedimensional model under the stravismus state not directly over view field the time according to display screen viewing area parameter and user's point of observation location parameter;
Projection matrix corrective system, the viewed status threedimensional model under the stravismus state that is used for obtaining according to described simulation calculate proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.
By the perspective correction system picture that outputs on the ground curtain is carried out the rectification of a stravismus awl, thereby realize that really the image that projection goes out is the three-dimensional perspective effect, the user sees that from eminence can obviously know from experience the three-dimensional that looks down from the high-altitude experiences.
As shown in Figure 6, described control system comprises light sound system, master control system and central controlling platform;
Described central controlling platform connects described man-machine interactive system, comprises a total central Control Software, by Ethernet and man-machine interactive system, light sound system, information screen master control system, a curtain master control system be connected.Central control system be mainly used in to an information screen and a ground curtain system carry out switching on and shutting down, start-up routine, broadcast sheet, operations synchronously such as collection, interaction, the demonstration of 3D digital sand table.An information screen master control system and a ground curtain master control system are then carried out corresponding operating according to the order of central control system or the order of man-machine interactive system, and control separately the node machine and finish the corresponding command, synchronized projection machine output etc.
Described master control system comprises ground curtain screen master control system and information screen master control system at least;
Described master control system is extracted screen position and user's point of observation positional information, and determines camera parameter and projective parameter according to screen position and user's point of observation position; And determine the GIS parameter informations such as image, model and landform of current projection process according to described camera parameter and projective parameter; And GIS parameters such as described camera parameter, projective parameter, image parameter, model parameter and landform are distributed to the node unit.
Described ground curtain master control system is controlled its pairing ground curtain screen node unit according to the order of central controlling platform and is carried out corresponding operating; Thereby ground curtain screen node machine control seamless emerging system over the ground curtain screen projection unit carry out the edge anastomosing and splicing operation of projected image; The corrective operations that the projection unit carries out the 3-D view stravismus awl of projected image is shielded in control perspective correction system curtain over the ground;
Described information screen master control system is controlled its pairing information screen node unit according to the order of central controlling platform and is carried out corresponding operating; Thereby information screen node machine is controlled seamless emerging system carries out projected image to information screen projection unit edge anastomosing and splicing operation; Control perspective correction system carries out the corrective operations of the 3-D view stravismus awl of projected image to information screen projection unit;
Described central controlling platform guarantees that by the coordination control operation to described ground curtain screen master control system and information screen master control system the display image of described ground curtain display screen and information display screen keeps related consistent.
The device of described presenting three-dimensional image also comprises data-storage system, and described data-storage system connects described optical projection system and man-machine interactive system respectively;
Be used for storing and export to the view data that described optical projection system will be carried out projection according to the instruction of described man-machine interactive system.
Described man-machine interactive system comprises external device;
Described external device comprises touch-screen at least, touches curtain, 3D mouse or laser pen, is used for providing human-computer interaction interface in conjunction with described computer system, receives and implement its received instruction;
Described touch-screen and touch curtain are used for an overall work mode switch, the viewing area switching (zone 1, zone 2 etc.) of described device and scheme layer switching;
Described 3D mouse is used for realizing at described device the free-roaming of projection signal, and translation furthers and zooms out operation;
Described laser pen is used to carry out clicking operation and roam operation, should be used for realizing multiple spot simulation touch function by a plurality of laser pens.
In addition, peripheral hardware also can comprise the 3D anaglyph spectacles, can watch the 3D stereoeffect of digital sand table model under three-dimensional pattern.
By the interactive mode of man-machine interactive system, for the user provides comprehensive, multi-functional operating experience.
In sum, based on the description of embodiment 1 and embodiment 2, there is following some feature in technical scheme contrast prior art provided by the present invention:
1, because display screen adopts the view picture screen, thus physical-gap between the screen that traditional splicing exists eliminated, thus make projection screen displayed image view picture be kept perfectly, unmanned for cutting apart.And after adopting seamless fusion treatment technology, more eliminated optical slot, compare with the common welding system of fighting recklessly like this, on technical merit and display effect, the difference and the raising of matter have just been arranged, thereby make the image of demonstration in full accord, do not have any physics or optical segmentation, guaranteed the integrality and the aesthetic property of display image;
2, adopt the polylith screen to show simultaneously, support the synchronous display structure of multi-screen, really realized having broken through the occupation mode of traditional digital sand table, limited display mode and display space have been jumped out, expanded the digital sand table occupation mode, improved the application of digital sand table greatly at aspects such as the urban planning design represent;
3, by the perspective correction system picture that outputs on the ground curtain is carried out the rectification of a stravismus awl, thereby realize that really the image that projection goes out is the three-dimensional perspective effect, the user sees that from eminence can obviously know from experience the three-dimensional that looks down from the high-altitude experiences;
4, the interactive mode by man-machine interactive system is for the user provides comprehensive, multi-functional operating experience.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (9)
1. the method for a presenting three-dimensional image, described method represents system by 3-D view and finishes representing of 3-D view, and described 3-D view represents system and comprises: database is used to store and export the 3 d image data for the treatment of projection; Main control computer is used to generate the three-dimensional image projection parameter, and is distributed to the node machine; The node machine, described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display screen; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
It is characterized in that described method comprises:
The setting of display screen orientation and user's point of observation are provided with step: be horizontally disposed with curtain main screen in ground on the ground in space representing, user's point of observation position be arranged in the air, the user watch from top to bottom at this place act main screen;
The three-dimensional image projection parameter is determined and forwarding step: main control computer is determined the three-dimensional image projection parameter, and the three-dimensional image projection parameter is distributed to some node machines;
The three-dimensional image projection step: every node machine is according to the three-dimensional image projection parameter extraction 3 d image data that receives, and 3 d image data is carried out the projection pre-treatment, indicates some projectors to carry out projection afterwards;
Wherein, the definite forwarding step that reaches of described three-dimensional image projection parameter specifically comprises:
Three-dimensional image projection parameter extraction step: main control computer extracts screen position parameter and user's point of observation location parameter, and determine display screen viewing area parameter, camera parameter and view field of separate unit projector parameter, and determine to treat the 3 d image data parameter of projection according to current projection scheme according to screen position and user's point of observation position; Three-dimensional image projection parameter allocation step: main control computer is distributed to the node machine with described user's point of observation location parameter, display screen viewing area parameter, camera parameter, view field of separate unit projector parameter and 3 d image data parameter;
Wherein, the described projection pre-treatment that 3 d image data is carried out comprises 3-D view transparent effect aligning step; Described 3-D view transparent effect aligning step specifically comprises: stravismus state model constitution step: the node machine simulates point of observation viewed status threedimensional model under the stravismus state not directly over the viewing area time according to display screen viewing area parameter and user's point of observation location parameter; The projection matrix aligning step: the viewed status threedimensional model under the stravismus state that the node machine obtains according to described simulation calculates proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.
2. the method for presenting three-dimensional image as claimed in claim 1, it is characterized in that, the orientation setting of described display screen and user's point of observation are provided with step and also comprise: be the vertical direction configuration information at ground curtain main screen one end and show auxilliary screen, user's viewing information in the horizontal direction shows auxilliary screen.
3. the method for presenting three-dimensional image as claimed in claim 1 is characterized in that, projector's quantity is greater than three in the described optical projection system.
4. the method for presenting three-dimensional image as claimed in claim 1 is characterized in that,
Described node machine carries out the projection pre-treatment to 3 d image data and also comprises:
3-D view edge fusion treatment step: the node machine carries out edge anastomosing and splicing operation according to the three-dimensional image projection parameter to the image of projector projection overlapping region.
5. the method for presenting three-dimensional image as claimed in claim 4 is characterized in that, described 3-D view edge fusion treatment step specifically comprises:
View field of separate unit projector determining step: the node machine is determined the view field of each projector according to view field of the separate unit projector parameter that receives;
The overlapping region generates step: the node machine carries out location confirmation to the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification step: the node machine carries out the coordinating and unifying to the displaying contents in the overlapping region, and displaying contents is consistent;
Overlapping region emergence step: the node machine carries out the unification operational processes to the brightness of described overlapping region and remaining Non-overlapping Domain;
The geometry deformation aligning step: the node machine is corrected the projected image deformation effect, guarantees the images match splicing in the projection overlapping region;
The color correction step: the node machine carries out the unification operational processes to colour temperature and colour gamut that full-screen image shows each other.
6. the device of a presenting three-dimensional image comprises display system, is used to receive projection and carries out 3 d image data information show; Optical projection system is used for carrying out image projection according to control command; Main control computer, be used to generate the three-dimensional image projection parameter, the three-dimensional image projection parameter comprises display screen viewing area parameter, user's point of observation location parameter and view field of separate unit projector parameter, and main control computer is used for described three-dimensional image projection parameter is distributed to the node machine; The node machine, described node machine is some, some projectors of every corresponding control of node machine, described node machine is used for generating 3 d image data to be shown according to the three-dimensional image projection parameter that receives from main control computer, is used to control some projectors simultaneously and throws described 3 d image data to display system; The 3 d image data of the corresponding control projection of each node machine converges jointly on display screen and is combined into 3-D view integral body;
It is characterized in that described display system comprises ground curtain display screen;
Described ground curtain display screen is provided with in horizontal direction;
Described ground curtain display screen is the monoblock screen;
Described node machine comprises the perspective correction system, described perspective correction system specifically comprises: stravismus state model tectonic system is used for simulating point of observation viewed status threedimensional model under the stravismus state not directly over view field the time according to display screen viewing area parameter and user's point of observation location parameter; Projection matrix corrective system, the viewed status threedimensional model under the stravismus state that is used for obtaining according to described simulation calculate proofreaies and correct projection matrix equation result, and sends to its pairing projector after according to correction equation projected image being proofreaied and correct.
7. the device of presenting three-dimensional image as claimed in claim 6 is characterized in that, described display system also comprises information display screen;
Described information display screen is the vertical direction setting at an end of described ground curtain display screen;
Described information display screen is the monoblock screen.
8. the device of presenting three-dimensional image as claimed in claim 6 is characterized in that, projector's quantity is greater than three in the described optical projection system.
9. the device of presenting three-dimensional image as claimed in claim 6 is characterized in that, described node machine also comprises seamless emerging system, and described seamless emerging system specifically comprises:
View field determines system, and view field of the separate unit projector parameter that is used for receiving according to it is determined the view field of each projector;
The overlapping region generation system is used in projection process, and location confirmation is carried out in the formed overlapping region of adjacent projections machine view field;
Overlapping region displaying contents unification system is used for the displaying contents of overlapping region is carried out the coordinating and unifying, and displaying contents is consistent;
Overlapping region emergence system is used for the brightness of projection overlapping region and Non-overlapping Domain is regulated, and guarantees that brightness is consistent;
The geometry deformation corrective system is used to correct the projected image deformation effect, guarantees the images match splicing of projection overlapping region;
Color corrected system is used for coordinating each other to guarantee that at each node machine colour temperature and colour gamut that full-screen image shows are consistent;
Multichannel Coordination Treatment system is used to coordinate the operation between above-mentioned each system, adjusts splicing, fusion, distortion and the color parameter of above-mentioned each system's output channel.
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| CN102655598A (en) * | 2011-12-12 | 2012-09-05 | 上海华博信息服务有限公司 | 3D (three-dimensional) display screen based three-dimensional digital sand table and applications thereof |
| CN103595926B (en) * | 2012-08-15 | 2017-06-13 | 无锡思朗电子科技有限公司 | A kind of distributed image Fusion Edges processing system |
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| CN103412455A (en) * | 2013-08-15 | 2013-11-27 | 苏州工业园区和合共好企业管理顾问有限公司 | Indoor lake-scenic-region projection system |
| CN103458192B (en) * | 2013-09-04 | 2017-03-29 | 上海华凯展览展示工程有限公司 | The method and system of perspective transform in a kind of vertical view arenas |
| CN104793909B (en) * | 2014-01-17 | 2018-11-23 | 浙江图维科技股份有限公司 | Binary channels space picture simultaneous display and control method and its realization system |
| CN105654520B (en) * | 2015-12-28 | 2021-09-14 | 联想(北京)有限公司 | Image processing method and electronic equipment |
| CN105590226A (en) * | 2015-12-29 | 2016-05-18 | 中国建设银行股份有限公司 | Image display method and device used for E-commerce website |
| CN107705241B (en) * | 2016-08-08 | 2021-08-03 | 国网新疆电力公司 | Sand table construction method based on tile terrain modeling and projection correction |
| CN109151448A (en) * | 2018-09-17 | 2019-01-04 | 北京唐冠天朗科技开发有限公司 | A kind of generation system and method for stereoscopic picture plane |
| CN109640070A (en) * | 2018-12-29 | 2019-04-16 | 上海曼恒数字技术股份有限公司 | A kind of stereo display method, device, equipment and storage medium |
| CN109493760B (en) * | 2019-01-03 | 2020-11-03 | 合肥工业大学 | Multisource synchronous display digital sand table system |
| CN110751595B (en) * | 2019-12-26 | 2020-05-01 | 北京航天宏图信息技术股份有限公司 | Automatic correction method and device for overlapped image, electronic equipment and storage medium |
| CN114463557B (en) * | 2022-01-25 | 2023-03-24 | 腾讯科技（深圳）有限公司 | Contour marking method, device, equipment, storage medium and system |
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