CN102096527B - Indoor wireless audio and video holographic interactive rear projection integrated machine and implementation method - Google Patents
Indoor wireless audio and video holographic interactive rear projection integrated machine and implementation method Download PDFInfo
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Abstract
The invention relates to an indoor wireless audio and video holographic interactive rear projection integrated machine which has a simple structure and is convenient to use and an implementation method. The integrated machine comprises at least one service-end integrated machine and a front-end accessory, wherein the service-end integrated machine comprises a control circuit and a projection circuit, which are mounted in a housing; the control circuit is provided with a video input and output interface and a wireless audio sending module; an infrared optical filter is arranged in front of a camera head of the projection circuit; and the front-end accessory comprises a base body which is positioned at the upper part or the lower part or the side part of a projection screen and in the size corresponding to the side length of the projection screen, at least two infrared light sources are arranged at two ends of the base body, and at least two infrared light sources respectively perform projection in 45-degree tilting directions, thereby forming an infrared plane which infinitely approaches the projection screen and being parallel the projection screen plane.
Description
Technical field
The present invention relates to holographic interactive rear-projection all-in-one of a kind of indoor wireless audio frequency and video and implementation method.
Background technology
In the existing infrared touch-control shadow casting technique, system construction needs various product mix scheme collocation to install, and method is complicated, needs professional and technical personnel's Installation and Debugging, carrying inconvenience, and cost is expensive, is unfavorable for the product industrialized development.The prior art complex algorithm, calculated amount is bigger, and all calculate by central processing unit and accomplish, and the machine energy consumption is bigger.Prior art can't solve projected picture splicing and acquisition process splicing simultaneously, and the problem of accurate contraposition.Prior art can't guarantee the use problem under the indoor infrared ray light interference.
Number of patent application is in 201010300910.3 the patent of invention file 5-6 page or leaf; Infrared touch control operation need be accomplished the operation of pattern distortion and perspective correction through " camera correction module " and " image perspective transform module "; Cause hardware cost to increase, the computed in software amount increases.In order to reach accurate operation, software algorithm is used the frequent method of gathering quiet frame and contrasting with stack before, and data volume and calculated amount are increased suddenly, has increased equipment energy consumption.Simultaneously, software application interface only uses the flash of the TUIO mode " interactive unit " to realize, the application surface relative narrower can't realize adopting the application program of WFP win7 multiple spot application programming interfaces.
Number of patent application is the 7th page of demonstration of patent of invention file of 02815206.9, and infrared touch control operation has used brightness and the gradient that detects pick-up pattern, and the interactive information that this " floodlight irradiation " forms can not accomplish to be accurate to the mutual control of coordinate figure.
The patent No. is in 200720066227.1 the utility model patent file; Only embodied the basic composition form in infrared touch-control field; In the 5-6 page or leaf software algorithm, the computing method complicacy is tediously long, and the calculated amount that can't effectively avoid background interference to bring increases; Movable information need compare present frame and former frame and draw, and it is big more to cause the error of calculation to be come approximately easily.
Number of patent application is in the 5th page of the 200910106826.5 patent of invention file, and important component " light path is separated adjustment unit/module " needs to produce separately, can cause cost to increase, and effect remains proof.
Number of patent application is in the 11st page of the 200810183426.X patent of invention file, and the computed in software method needs " relatively present image and original image " with 201010300910.3 patent document, and the computed in software amount is increased.In the 12nd page of the file, " the contact panel element is the insulating material that height is transparent, light conductivity is high, and attaches a kind of diaphragm that stops except that the special wave band infrared ray ", this just causes display element complicated, and cost increases, and has dwindled the actual range of application of setting up.
Summary of the invention
The object of the invention provides holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video and implementation method a kind of simple in structure, easy to use exactly for addressing the above problem.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The holographic interactive rear-projection all-in-one of a kind of indoor wireless audio frequency and video, it comprises at least one service end all-in-one and a frontal attachments; Said service end all-in-one comprises control circuit and the project circuit that is installed in the housing, and control circuit is provided with video input and output interface and ANTENNAUDIO sending module; Camera the place ahead of project circuit is provided with infrared fileter; Said frontal attachments comprises that be positioned at projection screen top or bottom or sidepiece and the corresponding pedestal of projection screen size dimension; Be provided with at least two infrared light supplies at the pedestal two ends; Wherein have at least two infrared light supplies each with miter angle vergence direction projection, forms one unlimited near the one-tenth projection screen the infrared ray plane and with the projection screen plane parallel.
Said service end all-in-one is connected with at least one slave unit through video input and output interface, and slave unit also cooperates with a corresponding frontal attachments; Said slave unit is the project circuit that is installed in the housing, on project circuit, also is provided with the video input and output interface that matches with the service end all-in-one and promptly inserts type general module and interface.
Said control circuit also comprises mainboard, is electrically connected CPU and GPU on the mainboard and promptly inserts type general module and interface, and video input and output interface and ANTENNAUDIO sending module are electrically connected with mainboard.
Said project circuit also comprises liquid crystal drive plate and the light source that is attached thereto, and liquid crystal drive plate the place ahead is provided with the optical imagery convex lens, and it and light source are on same axis, and camera is infinitely near this axis and be provided with infrared fileter.
Said pedestal is provided with the ANTENNAUDIO receiver module, and it is connected with loudspeaker.
Said projection screen is translucent or transparent medium.
The implementation method of the holographic interactive rear-projection all-in-one of a kind of indoor wireless audio frequency and video,
1) utilizes two infrared light supplies of frontal attachments, before projection screen, form an infrared ray plane; On projection screen, show various pictures simultaneously, on picture, be provided with the confession click on area;
2) when human hand or other objects touched with corresponding this infrared plane of click on area, to the service end all-in-one, this equipment utilization had the camera of infrared fileter with infrared light reflection, and the infrared picture of perception is sent into governor circuit;
3) governor circuit is handled the acquisition image, is converted into the white point-like pattern-information in the ater pattern;
4) supposition infrared ray plane overlaps with projected picture fully, because the resolution of two pictures is different, and the mouse coordinates that following formula can be a projected picture with the white dot pattern coordinate transformation in the infrared picture:
Wherein, X, Y are the mouse coordinates value in the projected picture, and Wx, Wy represent the location coordinate information of central point in infrared picture of white hot spot respectively; Bx, By represent the wide high value of the infrared picture of black respectively; Ws, Hs represent wide high value, the i.e. screen resolution of projected picture respectively;
Owing to will make the fringe region of projected picture to operate, infrared picture certainly will be larger than projected picture; The timing scope of resulting four the white hot spots generations in four angles of striking projected picture respectively is called as calibration range; Be above-mentioned Bx, By is actual to be the wide high value of calibration range in the infrared picture, and Wx, Wy also are the relative coordinate values in the calibration range;
5) Motion Recognition detects: because camera is to gather with the frame rate of 25fps or 30fps, so also be to send to governor circuit with identical speed according to the resulting click coordinate data of above-mentioned formula;
With motion and the click data of this hickie pattern center position, and the picture of responding projected on the projection screen of frontal attachments as cursor of mouse; During simultaneously if any audio signal output, then send the ANTENNAUDIO receiver module of sound signal to frontal attachments through the wireless audio and video sending module, the ANTENNAUDIO receiver module drives the loudspeaker plays audio-frequency information;
6) when adopting master and slave equipment work, gather picture splicing and use following technology to realize: many slave unit service ends are connected to the main equipment service end through promptly inserting the type bus; Slave unit passes to main equipment with the infrared ray image information that collects; Main equipment is gathered the splicing of picture; And unified carry out the coordinate figure analysis, and will throw the interface and cut apart automatically and final picture is returned to each slave unit, with the splicing of realization projection and collection.
In the said step 3), image adopted conventional discolor, blur, high-contrast edge processing, increase contrast and sharpening processing.
The invention has the beneficial effects as follows:
1. the present invention has guaranteed acquisition range and projection scope near overlapping owing to used acquisition camera and throwed the unlimited approaching spatial layout feature of camera lens in service end, can effectively avoid indoor infrared ray light to disturb, and has increased practical environmental field.
2. the present invention has realized high speed, high-precision touch-control projecting function through using specific hardware combinations and software algorithm.
3. software algorithm of the present invention is used the OPENCL technology, utilizes the general-purpose computations characteristic of GPU, and computing velocity is fast, and energy consumption is lower.
4. service end hardware of the present invention is formed mode and particular topology, can significantly reduce the workload of computed in software, makes that handling the process that calculates coordinate figure from picture becomes more efficient and convenient.
5. be that operation screen single frames processing speed can reach the 2-5 millisecond the soonest, does not have the operation delay problem fully under the GPU of CPU and the GMA4500 of 1.8MHz cooperated in dominant frequency.
6. the present invention will make infrared touch control equipment microization, install and use simplicity, guarantee the characteristic that high-precision characteristic of touch controllable function and big screen information are propagated simultaneously.
7. different with other patents is, comparison of the present invention be the coordinate data of former frame, rather than image.If the coordinate figure data do not change or no datat (promptly not having clicking operation), then do not send to system, just this has significantly reduced the calculated amount of system.
8. in the patent of the present invention, the layout type of " camera and projection source wheelbase are infinitely approaching " can solve to be gathered picture and throws the distortion correction problem that the picture position error causes.And, make life of product prolong because acquisition module and projection module physical separation can significantly reduce maintenance cost.
Description of drawings
Fig. 1 is this service end all-in-one machine structure synoptic diagram;
Fig. 2 is the frontal attachments structural representation;
Fig. 3 is user mode figure;
Fig. 4 is the slave unit structural representation;
Fig. 5 is multiple devices splicing user mode figure.
Wherein, 1. mainboard is 2. promptly inserted type general module and interface, 3.CPU, 4.GPU; 5. storage medium, 6. liquid crystal drive plate, 7. light source, 8. camera; 9. infrared fileter, 10. ANTENNAUDIO transmitter module, 11. infrared light supplies, 12. ANTENNAUDIO receiver modules; 13. loudspeaker, 14. projection screens, 15. convex lens, 16. video input and output interfaces.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1, Fig. 3, the present invention mainly is made up of service end all-in-one and frontal attachments.The inner main member of service end all-in-one has: mainboard 1, promptly insert type bus module and interface 2, CPU3, GPU4, storage medium 5, ANTENNAUDIO transmitter module 10; Liquid crystal drive plate 6 the place aheads are provided with optical imagery convex lens 15; Convex lens 15, liquid crystal drive plate 6 and light source are on same axis; 8 of cameras are infinitely near this axis, and are provided with infrared fileter 9; Among Fig. 2; Frontal attachments comprises that be positioned at projection screen top or bottom or sidepiece and the corresponding pedestal of projection screen size dimension; Be provided with at least two infrared light supplies 11 (can be infrared spotlight) at the pedestal two ends; At least two infrared light supplies 11 each with the projection of miter angle vergence direction (then can arbitrarily placing the restriction that do not have angle more than the 3rd or the 3rd), forms one unlimited near projection screen the infrared ray plane and with the projection screen plane parallel.Be provided with ANTENNAUDIO receiver module 12 in the pedestal, it is connected with loudspeaker 13.Projection screen 14 is translucent or transparent medium.Pedestal is positioned at the corresponding with the projection screen size dimension of projection screen 14 tops or bottom or sidepiece.Camera 8 is infinitely approaching with axis, guarantees unlimited approaching coincidence of projection scope and acquisition range, avoids external interference, enlarges usable range.
When Fig. 5 is the use of many all-in-one touch-control projector equipment parallel connections, as main equipment, get final product with each slave unit is parallelly connected then with a service end all-in-one.Among Fig. 4, said slave unit is the project circuit that is installed in the housing, on project circuit, also is provided with the video input and output interface 16 that matches with the service end all-in-one and promptly inserts type general module and interface 2.
Said structure has overcome the insurmountable hardware of prior art and has set up complicacy, and the characteristics of software debugging difficulty are fulfiled most of complex work ahead of schedule in the all-in-one production run, strengthened the usable range and the touch-control precision of touch-control projection simultaneously.Because the particular topology of all-in-one has guaranteed projection picture and camera collection picture relative fixed, so demarcating with distortion correction, picture only needs disposable debugging completion before product export, for the user uses the condition of providing convenience.
Method of work of the present invention is:
The user form images the end two infrared light supplies 11 throw with the miter angle vergence direction; Form one infinitely near the infrared ray plane of imaging plane and parallel with imaging plane; Only need when the user uses point or type point an object and touching this plane; Just can IR be reflexed to service end, form simple infrared touch-control image information.The camera of service end can this infrared picture of perception through the infrared ray filter apparatus.Simultaneously picture is passed to CPU and GPU carries out analyzing and processing.Through software analysis, use five steps that this picture is processed into the white point-like pattern-information in the ater picture, and be converted into coordinate figure information, simultaneously the coordinate figure information analysis is become the coordinate information of the discernible multiple spot cursor of mouse of system.
Detailed process is:
1) utilizes two infrared light supplies of frontal attachments, before projection screen, form an infrared ray plane; On projection screen, show various pictures simultaneously, on picture, be provided with the confession click on area;
2) when human hand or other objects touched with corresponding this infrared plane of click on area, to the service end all-in-one, this equipment utilization had the camera of infrared fileter with infrared light reflection, and the infrared picture of perception is sent into governor circuit;
3) governor circuit is handled the acquisition image, is converted into the white point-like pattern-information in the ater pattern; Image adopted conventional discolor, blur, high-contrast edge processing, increase contrast and sharpening processing.
4) supposition infrared ray plane overlaps with projected picture fully, because the resolution of two pictures is different, and the mouse coordinates that following formula can be a projected picture with the white dot pattern coordinate transformation in the infrared picture:
Wherein, X, Y are the mouse coordinates value in the projected picture, and Wx, Wy represent the location coordinate information of central point in infrared picture of white hot spot respectively; Bx, By represent the wide high value of the infrared picture of black respectively; Ws, Hs represent wide high value, the i.e. screen resolution of projected picture respectively;
Owing to will make the fringe region of projected picture to operate, infrared picture certainly will be larger than projected picture; The timing scope of resulting four the white hot spots generations in four angles of striking projected picture respectively is called as calibration range; Be above-mentioned Bx, By is actual to be the wide high value of calibration range in the infrared picture, and Wx, Wy also are the relative coordinate values in the calibration range;
5) will be according to motion and the click data of last this hickie pattern center position of calculating of step as mouse; And the picture of responding projected on the projection screen of frontal attachments; During simultaneously if any audio signal output, then send the ANTENNAUDIO receiver module of sound signal to frontal attachments through the wireless audio and video sending module, the ANTENNAUDIO receiver module drives the loudspeaker plays audio-frequency information; Realize the wireless transmission of sound picture, and guarantee that sound picture is synchronous fully.
6) when adopting master and slave equipment work, gather picture splicing and use following technology to realize: many slave unit service ends are connected to the main equipment service end through promptly inserting the type bus; Slave unit passes to main equipment with the infrared ray image information that collects; Main equipment is gathered the splicing of picture; And unified carry out the coordinate figure analysis, and will throw the interface and cut apart automatically and final picture is returned to each slave unit, with the splicing of realization projection and collection.
In the said step 3), image adopted conventional discolor, blur, high-contrast edge processing, increase contrast and sharpening processing.
Fig. 2 is the mode of installing and using of single equipment; Be characterized in multiple product is integrated; The user is formed images hold and both had infrared ray transmitting function; Have ANTENNAUDIO again and receive and player function, the set combination of equipment has simultaneously guaranteed that the infrared emission end throws with best angle, strengthens portable and practicality.
The present invention carries out adjustment before dispatching from the factory, make that installing and using of equipment is very simple, and all-in-one rear-projection equipment can land installation, also can hang installation, even the layman also can easily install and use.Service end is set up in after the translucent image forming medium,, can obtains the picture of corresponding size through adjustment distance and focal length; Frontal attachments is set up in the front bottom end of image forming medium, and connects electric getting final product respectively.During parallel connection, a main equipment is linked to each other with promptly inserting the type bus with the Duo Tai slave unit, gather picture and calculate in main equipment all-in-one inter-process and with software realization splicing.
Claims (8)
1. the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video is characterized in that it comprises: a service end all-in-one and a frontal attachments; Said service end all-in-one comprises control circuit and the project circuit that is installed in the housing, and control circuit is provided with video input and output interface and ANTENNAUDIO sending module; Camera the place ahead of project circuit is provided with infrared fileter; Said frontal attachments comprises that be positioned at projection screen top or bottom or sidepiece and the corresponding pedestal of projection screen size dimension; Be provided with at least two infrared light supplies at the pedestal two ends; At least two infrared light supplies each with the projection of miter angle vergence direction, forms one unlimited near the one-tenth projection screen the infrared ray plane and with the projection screen plane parallel.
2. the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video as claimed in claim 1 is characterized in that said service end all-in-one is connected with at least one slave unit through video input and output interface, and slave unit also cooperates with a corresponding frontal attachments; Said slave unit is the project circuit that is installed in the housing, on project circuit, also is provided with the video input and output interface that matches with the service end all-in-one and promptly inserts type general module and interface.
3. the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video as claimed in claim 1; It is characterized in that; Said control circuit also comprises mainboard; Be electrically connected CPU and GPU on the mainboard and promptly insert type general module and interface, video input and output interface and ANTENNAUDIO sending module are electrically connected with mainboard.
4. according to claim 1 or claim 2 the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video; It is characterized in that; Said project circuit comprises liquid crystal drive plate and the light source that is attached thereto; Said liquid crystal drive plate the place ahead is provided with the optical imagery convex lens, and it and light source are on same axis, and camera is infinitely near this axis and be provided with infrared fileter.
5. the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video as claimed in claim 1 is characterized in that said pedestal is provided with the ANTENNAUDIO receiver module, and it is connected with loudspeaker.
6. the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video as claimed in claim 1 is characterized in that said projection screen is translucent or transparent medium.
7. the implementation method of the holographic interactive rear-projection all-in-one of the described indoor wireless audio frequency and video of claim 1 is characterized in that,
1) utilizes two infrared light supplies of frontal attachments, before projection screen, form an infrared ray plane; On projection screen, show various pictures simultaneously, on picture, be provided with the confession click on area;
2) when human hand or other objects touched with corresponding this infrared ray plane of click on area, to the service end all-in-one, the utilization of service end all-in-one had the camera of infrared fileter with infrared light reflection, and the infrared picture of perception is sent into control circuit;
3) control circuit is handled the acquisition image, is converted into the white point-like pattern-information in the ater pattern;
4) supposition infrared ray plane overlaps with projected picture fully, because the resolution of two pictures is different, and the mouse coordinates that following formula can be a projected picture with the white dot pattern coordinate transformation in the infrared picture:
Wherein, X, Y are the mouse coordinates value in the projected picture, and Wx, Wy represent the location coordinate information of central point in infrared picture of white dot pattern respectively; Bx, By represent the wide high value of the infrared picture of black respectively; Ws, Hs represent wide high value, the i.e. screen resolution of projected picture respectively;
Owing to will make the fringe region of projected picture to operate, infrared picture certainly will be larger than projected picture; The timing scope of resulting four the white hot spots generations in four angles of striking projected picture respectively is called as calibration range; Be above-mentioned Bx, By is actual to be the wide high value of calibration range in the infrared picture, and Wx, Wy also are the relative coordinate values in the calibration range;
5) Motion Recognition detects: because camera is to gather with the frame rate of 25fps or 30fps, so also be to send to governor circuit with identical speed according to the resulting click coordinate data of above-mentioned formula;
With motion and the click data of this white point-like pattern center position, and the picture of responding projected on the projection screen of frontal attachments as cursor of mouse; During simultaneously if any audio signal output, then send the ANTENNAUDIO receiver module of sound signal to frontal attachments through the ANTENNAUDIO sending module, the ANTENNAUDIO receiver module drives the loudspeaker plays audio-frequency information;
6) when adopting master and slave equipment work, gather picture splicing and use following technology to realize: many slave units are connected to the service end all-in-one as main equipment through promptly inserting the type bus; Slave unit passes to main equipment with the infrared ray image information that collects; Main equipment is gathered the splicing of picture; And unified carry out the coordinate figure analysis, and will throw the interface and cut apart automatically and final picture is returned to each slave unit, with the splicing of realization projection and collection.
8. the implementation method of the holographic interactive rear-projection all-in-one of indoor wireless audio frequency and video as claimed in claim 7 is characterized in that, in the said step 3), image adopted conventional discolor, blur, high-contrast edge processing, increase contrast and sharpening processing.
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| CN102681303A (en) * | 2011-08-15 | 2012-09-19 | 上海华博信息服务有限公司 | Method and device for processing projection calibration information on basis of information feedback |
| CN102520830A (en) * | 2011-12-27 | 2012-06-27 | 华南理工大学 | Virtual touch screen system based on image processing technology |
| CN103365617B (en) * | 2012-04-01 | 2018-01-05 | 深圳市中科睿成智能科技有限公司 | One kind projection control system, device and method for controlling projection |
| CN103024324B (en) * | 2012-12-10 | 2016-06-22 | Tcl通力电子（惠州）有限公司 | A kind of short out-of-focus projection system |
| CN103019477A (en) * | 2012-12-14 | 2013-04-03 | 山东龙视天下传媒集团有限公司 | Indoor wireless audio-video holographic interaction back projection all-in-one machine and realization method |
| CN103324292B (en) * | 2013-07-12 | 2016-01-13 | 荣滋东 | A kind of method that convex lens primary optical axis sensing target is located in real time and device |
| CN104284121B (en) * | 2014-09-26 | 2017-07-14 | 高国华 | Selective imaging device and method inside and outside a kind of glass |
| CN207571706U (en) * | 2017-10-26 | 2018-07-03 | 广州视睿电子科技有限公司 | Control assembly, sky mouse equipment and display equipment for sky mouse equipment |
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| CN101907954A (en) * | 2010-07-02 | 2010-12-08 | 中国科学院深圳先进技术研究院 | Interactive projection system and interactive projection method |
| CN201965585U (en) * | 2010-12-18 | 2011-09-07 | 何晓 | Indoor wireless audio and video holographic interactive back projection all-in-one machine |
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| US7728821B2 (en) * | 2004-08-06 | 2010-06-01 | Touchtable, Inc. | Touch detecting interactive display |
| WO2008156453A1 (en) * | 2007-06-20 | 2008-12-24 | Thomson Licensing | Laser pointer for an interactive display |
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| CN201465081U (en) * | 2009-06-10 | 2010-05-12 | 郑克云 | Large-scale infrared interactive display system |
| CN101907954A (en) * | 2010-07-02 | 2010-12-08 | 中国科学院深圳先进技术研究院 | Interactive projection system and interactive projection method |
| CN201965585U (en) * | 2010-12-18 | 2011-09-07 | 何晓 | Indoor wireless audio and video holographic interactive back projection all-in-one machine |
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