CN101231450B - Multipoint and object touch panel arrangement as well as multipoint touch orientation method - Google Patents
Multipoint and object touch panel arrangement as well as multipoint touch orientation method Download PDFInfo
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- CN101231450B CN101231450B CN2008100657145A CN200810065714A CN101231450B CN 101231450 B CN101231450 B CN 101231450B CN 2008100657145 A CN2008100657145 A CN 2008100657145A CN 200810065714 A CN200810065714 A CN 200810065714A CN 101231450 B CN101231450 B CN 101231450B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04109—FTIR in optical digitiser, i.e. touch detection by frustrating the total internal reflection within an optical waveguide due to changes of optical properties or deformation at the touch location
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Abstract
The invention discloses a multipoint touch screen device and a positioning method for multipoint touch, which can identify two or more touch operations. The device comprises a touch panel, infrared LEDs, a projection flexible screen, an infrared camera, a projector, a controller and a computer execution command processor. The infrared LEDs are circumferentially arranged on the transparent touch panel to envelope all infrared lights based on the frustrated total internal reflection principle. When the panel is touched, the total reflection is destroyed and the infrared camera behind the panel can capture the bright spot. An infrared filter plate is placed before the infrared camera to filter off visible lights. The infrared camera collects a touch event and sends touch signals to the controller; the controller process the touch signals and sends the data of touch event and touch position to the computer software for explaining the touch and executes the operations based on the touch event.
Description
Technical field
The present invention relates to a kind of touch-screen electronic equipment, especially a kind ofly can distinguish a plurality of touch points and the touch-screen electronic equipment that can operate simultaneously and the localization method of multiple point touching.
Background technology
Touch-screen is widely used in various electronic at present.They are used for controlling electronic equipment and realize various functions.Particularly in computer application system, often substitute the input control function of keyboard and mouse, with the interactive action of pointing or realize by the prompting figure on the simple click display screen people and equipment with felt pen with touch-screen.Usually, touch-screen comprises one and covers display screen touch panel visible area, transparent, a controller and corresponding drive software, touch panel registers touch events, and give controller touch signal, controller is handled these signals, again touch event and touch position data are transferred to computer software and explain that this touches, and carry out operation based on this touch event.
Existing touch screen technology comprises: resistance-type, condenser type, echelette formula, ultrasonic type etc.In the resistive touch technology, the conducting film of the coated layer of transparent in touch panel surface, with the transparent transparent resistance tunic that has level and vertical electrode, when touching, these two corresponding positions of layer come in contact, by applying voltage in level and vertical direction respectively, obtain representing the voltage output of its touch location, measure this voltage and obtain position encoded accordingly.Similarly the capacitance touch panel is coated can stored charge hyaline membrane, when panel was touched, the contact electric charge changed, and measured electric charge and determined touch location.Echelette formula touch pad is right by infrared ray transmitting-receiving LED is set in level and vertical direction, form crossed grating, when touching, because blocking grating causes some LED not receive infrared light, conducting situation by mensuration level and vertical infrared reception LE D is determined touch position coordinates, also have by adopting direct projection and oblique fire power valve to form the grating of different angles, can measure a plurality of contacts incident with hope.Ultrasonic type touch pad and infrared type are similar, are measured touch location by ultrasonic surface wave by the object situation of blocking.The problem that these touch screen technologies exist is the ability of not following the trail of a plurality of contact points, when a plurality of contacts drop on grid line level and vertical position on the time, reported position correctly.
In addition, the multipoint mode touch screen technology is also arranged at present: a kind of is condenser type, by increasing the method for each little capacitor cell lead-in wire of touch pad, by detecting the capacitance variations of each capacitor cell on touch pad, be implemented in and simultaneously on the plane of touch pad but be in the multiple spot of diverse location or close on touch, and represent touch location for each contact produces different signals.Other has a kind of strain resistance type, also be by increasing the method for the lead-in wire of each strain unit on the touch pad, by measuring the change in resistance of each strain resistor unit, be implemented in the simultaneous contact that but is in the multiple spot or the point of proximity of diverse location on the touch pad, and the position that the computing method by complexity calculate these contact points is represented.But this touch-screen only is applicable in the smaller situation of size, and when requiring screen size big, the complexity of the manufacture craft difficulty of touch pad and control counting circuit is very big, reported position correctly when therefore being difficult to realize multiple point touching.
In view of the deficiency that above-mentioned prior art exists, provide a kind of and can realize that multiple point touching is located and the localization method of the multi-point touch screen device of minimizing erroneous judgement and multiple point touching is very necessary.
Summary of the invention
The purpose of this invention is to provide a kind of touch panel device that can discern two or more touch operation.
Another object of the present invention provides a kind of touch panel device that not only can discern two or more touch operation but also can discern the label that touches the different pattern on the object.
The 3rd purpose of the present invention provides a kind ofly uses above-mentioned touch-screen to realize that multiple spot touches and can report the localization method of the multiple point touching of correct touch location simultaneously.
The 4th purpose of the present invention provides a kind of touch panel device of jumbotron, and this touch panel device is furnished with the projector and the thermal camera of a plurality of arrangements.
The 5th purpose of the present invention provides a kind of super large touch-screen that uses a plurality of projectors and a plurality of thermal camera to be spliced and realizes that multiple spot touches and can report the localization method of the multiple point touching of correct touch location simultaneously.
In order to realize first above-mentioned purpose, be applicable to the technical scheme of finger touch below can adopting:
A kind of multi-point touch screen device, it comprises:
A high touch panel transparent, that the high material of leaded light performance is made;
A kind of diaphragm that stops that the external world is infrared is attached to above the touch panel;
A plurality of LED that infrared light is provided, these LED are arranged on the side of above-mentioned touch panel, and Infrared is injected touch panel from the side;
The soft curtain of projection, the soft curtain of this projection is attached to the back side of above-mentioned touch panel;
A thermal camera, this position for video camera in above-mentioned touch panel the back side, and can photograph the image at the touch panel back side;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera camera lens;
A projector, this projector be positioned at above-mentioned touch panel the back side, and can be to the soft curtain projection image of projection;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Thermal camera is gathered event, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains that by corresponding software this touches, and carry out the operation based on this touch event.
In order to realize second above-mentioned purpose, not only be applicable to finger touch but also be applicable to the technical scheme that any object touches below can adopting:
A kind of multiple spot and object touch panel device is characterized in that comprising:
A high touch panel transparent, that the high material of leaded light performance is made;
A plurality of LED that infrared light is provided, these LED are arranged on the side of above-mentioned touch panel, and Infrared is injected touch panel from the side;
Layer of transparent and resilient silica gel, this layer silica gel is coated in the front of above-mentioned touch panel;
The soft curtain of projection, the soft curtain of this projection has ventilative and can stop extraneous ultrared performance, it be placed on above-mentioned layer of silica gel above, perhaps have ventilative, transparent rete and be placed between soft curtain of projection and the layer of silica gel with one deck;
A thermal camera, this position for video camera be in the back side of above-mentioned touch panel, and can photograph the image at the back side of touch panel;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera camera lens;
A projector, this projector be positioned at above-mentioned touch panel the back side, and can be to the soft curtain projection image of projection;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Thermal camera is gathered touch event, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains that by corresponding software this touches, and carry out the operation based on this touch event.
In order to realize second above-mentioned purpose, can also adopt following technical scheme:
The touch panel device of a kind of multiple point touching and object identification is characterized in that comprising:
A high touch panel transparent, that the high material of leaded light performance is made;
The LED matrix that infrared light is provided, this LED matrix is arranged on the back side of above-mentioned touch panel, and Infrared is dispersion shape and is scattered in the screen back side equably;
The soft curtain of projection, the soft curtain of this projection is attached to the back side of above-mentioned touch panel, and this projection screen has the characteristic of Infrared;
A thermal camera, this position for video camera be in the back side of above-mentioned touch panel, and can photograph the touch image of touch panel objects in front;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera camera lens;
A projector, this projector be positioned at above-mentioned touch panel the back side, and can be to the soft curtain projection image of projection;
One or more can be attached to the benchmark label on the material object, and this label is the label that has the reflective infrared imaging pattern of cross-platform Computer Vision Recognition;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
The touch panel record is attached to the touch patterns of the benchmark label on the material object, and give controller touch signal, controller is handled these signals, and with the sample contrast coupling of the label infrared external reflection imaging of gathering in advance, to confirm which kind of touches object, and the coordinate at object place and angle, whether in motion and travel direction.And carry out accordingly and operate.
In order to realize the 3rd above-mentioned purpose, can adopt following localization method, this method comprises the raw image data that receives thermal camera, raw image data has comprised on the touch-screen owing to touch produces ir scattering imaging pixel numerical value.This method also comprises the pre-service to touch screen raw pixel data at a time, keeps active data, and analyzes, to determine to touch the target of touch-screen.This method also comprises present image and former image comparison, to determine to touch on the touch-screen variable of target.
The present invention realizes that the localization method of multiple point touching mainly comprises following step:
(1) starts LED, video camera and projector;
(2) thermal camera is taken the raw image data on the touch panel;
(3) projector is invested soft curtain with image;
(4) thermal camera processor that the raw image data on the touch panel that photographs is delivered to the execution command of computing machine goes background by software, increases the light and shade contrast, filters noise;
(5) a plurality of points on the driving touch-screen;
(6) thermal camera is taken the touch view data on the touch panel;
(7) projector is invested soft curtain with image;
(8) thermal camera is delivered to the touch view data on the touch panel that photographs the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement of several contacts and each point;
(9) application program in the software is carried out corresponding action and order according to the contact information that driver transmits;
(10) repeating step (4)-(9) begin new circulation.
Adopt touch panel device of the present invention, and use multipoint positioning method of the present invention, touch panel device just can be distinguished a plurality of touch points that touch simultaneously, and multipoint positioning is achieved on touch-screen; Also make the object of the label that posts different reflective infrared imaging patterns touch the realization difference.On this basis, further can determine the mobile trend of each touch point according to the situation of change of touch point position coordinates, can define different touch operation functions in view of the above, for example two touch point direction of motion are opposite, and expression is amplified or reduction operation; A touch point is motionless, and movement in a curve is done in another touch point, and expression is rotated operation etc., can finish the function that the single-point touches screen device can't be finished like this, and all these functions can define flexibly by corresponding application software.
In order to realize the 4th above-mentioned purpose, can adopt following technical scheme: the multi-point touch screen device of this programme comprises:
A high super large touch panel transparent, that the high material of leaded light performance is made, this panel forms by a plurality of touch areas are seamless spliced;
A plurality of LED that infrared light is provided, these LED are arranged on four sides of above-mentioned super large touch panel;
A super-large projection curtain, this projection screen is attached to the back side of above-mentioned touch panel;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with a plurality of thermal cameras, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with a plurality of projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Above-mentioned each touch area disposes respectively:
A thermal camera, this position for video camera be in the back side of above-mentioned touch area, and can photograph the infrared imaging at the back side of this touch area;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera;
A projector, this projector is positioned at the back side of above-mentioned touch area, and can throw image to projection screen;
All projector's projection and infrared camera photographic images cover whole touch-screens;
Thermal camera is gathered touch event, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains that by corresponding software this touches, and carry out the operation based on this touch event.
In order to realize the 5th above-mentioned purpose, can adopt following technical scheme:
Each independently can adopt the localization method of the multiple point touching of above-mentioned single touch panel respectively in the touch area, and the touch information with each isolated area is aggregated on the splice program again, and splice program is passed to application program with spliced touch information again.
The present invention realizes that the localization method of multiple point touching mainly comprises following step:
(1) starts LED, all video cameras and all projector;
(2) each thermal camera is taken the raw image data on the zone separately;
(3) each projector is invested soft curtain with the each several part image;
(4) processor of delivering to the execution command of computing machine of the raw image data on each thermal camera touch area separately that will photograph goes background by software, increases the light and shade contrast, filters noise;
(5) drive a plurality of points on each touch area;
(6) each thermal camera is taken the touch view data on the touch area separately;
(7) each projector is combined into a complete image with the soft curtain of image trend of purchasing separately;
(8) the touch view data on each thermal camera touch area separately that will photograph is delivered to the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement of several contacts and each point, and touch information is separately passed to splice program;
(9) splice program is carried out coordinate conversion according to the contact information that each driver transmits, and action conversion, and object identification or the like are spliced into the touch information of whole giant-screen, and this touch information is passed to application program;
(10) application program in the software is carried out corresponding action and order according to the contact information that driver transmits;
(11) repeating step (4)-(10) begin new circulation.
Compared with prior art, the invention has the beneficial effects as follows:
1, touch panel device of the present invention is simple in structure, compact, and is with low cost;
2, both can realize single-point touches, also can realize multiple point touching, can also discern the object of the label that posts different reflective infrared imaging patterns, so its application be in extensive range;
3, realize the efficiency of algorithm height of multipoint positioning, touch point position coordinates convenience of calculation, accurate, reliable.
Description of drawings
The present invention further describes by the following drawings, and wherein identical Reference numeral is represented identical structure member:
Fig. 1 is the structural representation of one of multi-point touch screen device of the present invention embodiment.
Fig. 2 is the infrared imaging schematic diagram of the device among Fig. 1.
Synoptic diagram when Fig. 3 is the multiple point touching touch-screen of embodiment of the device among Fig. 1.
Fig. 4 be the touch screen plane of Fig. 3 when touching, form the infrared image synoptic diagram.
Fig. 5 is the structural representation of another embodiment of multiple spot of the present invention and object touch panel device.
Fig. 6 is the object identification benchmark label synoptic diagram legend of the embodiment among Fig. 5.
Fig. 7 is the synoptic diagram that posts the benchmark label object among Fig. 6.
Fig. 8 is the object that posts the benchmark label view when being placed on the touch-screen.
Fig. 9 posts the imaging synoptic diagram that benchmark label object touches the infrared photography behind the touch-screen.
Figure 10 is the block diagram of the touch-screen system device of the foregoing description.
Figure 11 is to use the device of the foregoing description to realize the schematic flow sheet of multi-point touch locating method.
Figure 12 is the schematic side view of carrying out especially big screen splicing according to first above-mentioned embodiment.
Figure 13 is the structural representation of another embodiment of multiple spot of the present invention and object touch panel device.
Embodiment
Embodiment 1.Fig. 1 is the structural representation of one of multi-point touch screen device of the present invention embodiment.This device comprises: the touch-screen 20 that high transparent acrylic glass plate is made, and four sides of this touch-screen 20 are polished; A plurality of LED 22 that infrared light wavelength 850nm is provided; Infrared is injected in it from the side all around of acrylic glass plate 20, and propagates at inner full-reflection, and when object touched the panel of touch-screen 20, the touch place total reflection was destroyed, and scattering takes place infrared ray herein, produces infrared imaging.The soft curtain of the projection of display image 16 back sides attached to acrylic glass plate 20, this soft curtain 16 has good infrared perspective performance.Thermal camera 12 is taken the infrared reflection imaging that presents on the acrylic board 20.Being provided with the admittance Infrared wavelength corresponding with the infrared light wavelength of LED 22 emissions before the absorption camera lens of video camera 12 is the optical filter 10 of 850nm light wave, and it can stop that the reflected light of other wavelength is taken.Projector 14 is invested soft curtain 16 with image.Acrylic touch pad 20 is accepted outside touch-control, can realize with projection screen 16 on the display graphics interface carry out interaction.Thermal camera 12 photographs the infrared imaging on acrylic board 20, and this view data is delivered to the processor 36 of computer executed instructions, Computer Processing is also explained the touch-control incident, carry out some operation based on this touch event then, or produce new figure and picture and be incident upon on the soft curtain 16 by projector 14, the user can carry out new touch control operation then.Certainly, the infrared light wavelength and the optical filter 10 admittance Infrared wavelength of LED 22 emissions are not limited to 850nm, are arranged to other suitable wavelength and also are fine.
It is the infrared imaging schematic diagram of the device among Fig. 1 that Fig. 2 is shown.Infrared LED 22 be installed in acrylic glass around, the edge of acrylic glass plate 20 is enough transparent, make light as much as possible enter acrylic glass 22 and total reflection takes place, when finger contact acrylic glass 20 surfaces, finger is extruded away with the air layer between the acrylic glass plate 20, total reflection is destroyed, diffuse reflection will also take place downwards by the directive finger in this regional light so, be placed on acrylic glass plate 20 following thermal cameras 12 and just can capture a bright spot, calculate the centre distance of bright spot, just can obtain touch location.
Figure 10 is the block diagram of the touch-screen system device of the foregoing description.This device also comprises an i/o controller, and this controller comprises input interface 34 and output interface 38, and wherein an end of input interface 34 is connected with thermal camera 12, and the other end is connected with the input interface of the processor 36 of computer executed instructions; One end of output interface 38 is connected with the output interface of the processor 36 of computer executed instructions, and the other end is connected with projector 14;
When a plurality of finger touch are on acrylic glass touch pad 20 (referring to Fig. 3), the infrared imaging that occurs as shown in Figure 4, the processor 36 of computer executed instructions calculates the coordinate of each bright spot on camera respectively, convert coordinate in projection to according to relative position, and then draw the accurate coordinates of each touch point, can draw the action (press, disappear, move) of each point again according to previous frame infrared imaging figure.Touch information is notified the processor 36 of computer executed instructions, computing machine is operated accordingly according to each touch point position and action again, by projector 14 action is showed, and can realize the sensation of touch-control in the reality.In theory, as long as screen is enough big, native system supports that the number of touch point can be unlimited.
Above the material of said making touch panel can be organic glass or acrylic plate or ultra-clear glasses or acryhic material or polymethyl methacrylate material.
Embodiment 2, referring to Figure 13.The difference of present embodiment and embodiment 1 only is: it also comprises layer of transparent and resilient silica gel 40, and this layer silica gel 40 is coated in the front of above-mentioned touch panel 20, and silica gel becomes a single total reflection layer with touch panel; The soft curtain of said projection 16 has ventilative and can stop extraneous ultrared performance, it be placed on above-mentioned layer of silica gel 16 above.Because soft curtain 16 back sides are coarse, have air layer at pellosil with between the projection screen, when pressure is pressed on the soft curtain 16 of projection, because layer of silica gel 40 is resilient, soft curtain 16 can again because layer of silica gel 40 adsorptive poweies are stronger, can be extruded air because pressure is close on the layer of silica gel 40 between soft curtain 16 and layer of silica gel 40, so destroyed total reflection, produced bright spot.When pressure disappears, because layer of silica gel 40 is flexible, can restore to the original state immediately, total reflection recovers, and bright spot disappears.The touch-screen of this embodiment is not limited to finger, and any object can touch.
The device of embodiment 3 can be discerned shape on the touch-screen 20, that be attached to reflective infrared imaging pattern label on the touch object, the sample of the label infrared external reflection imaging that promptly can gather in advance, and the touch object catoptric imaging that obtains with current coupling contrast, to confirm which kind of touches object, and the coordinate at object place and angle, whether in motion and travel direction.And carry out accordingly and operate.
The infrared light supply of embodiment 3 devices is from the infrared launcher 24 that is placed on acrylic glass plate 20 back, the infrared light that sends is radiated at the back side of screen, when acrylic glass 20 surfaces have labeing reflective infrared imaging pattern object when existing (referring to Fig. 6-Fig. 9), label to the light catoptric imaging on acrylic glass 20, thermal camera 12 filters the reflection ray of other wavelength, only takes the reflected image of Infrared.View data passes to the processor 36 of computer executed instructions and to carry out matching ratio right with the database of computing machine the inside, confirms that coordinate and control that object is placed with object operates accordingly.As: when object is the document carrier of a support wireless network, by radio communication, reads or write this carrier file, or show the graphic file in this carrier.This object of identification that the object back side is labeled, characteristics such as these labels are one group of reflective infrared special patterns that indicates object, have high reflection, and computing machine is easy to identify.
A high super large touch panel 60 transparent, that the high material of leaded light performance is made, this panel forms by a plurality of touch areas are seamless spliced;
A plurality of LED22 that infrared light is provided, these LED are arranged on the side of above-mentioned large touching surface plate 60;
The soft curtain of super-large projection 70 back sides attached to above-mentioned touch panel 60;
An i/o controller, this controller comprise input interface 34 and output interface 38, and wherein an end of input interface 34 is connected with a plurality of thermal cameras 12, and the other end is connected with the input interface of the processor 36 of computer executed instructions; One end of output interface 38 is connected with the output interface of the processor 36 of computer executed instructions, and the other end is connected with a plurality of projector 14;
A computer executed instructions processor 36, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Each independent touch area 20 disposes:
A thermal camera 12, this video camera 12 is positioned at the back side of above-mentioned touch area 20, and can photograph the image at the back side, own touch area;
An infrared fileter 10, this infrared fileter 10 is positioned at the front of thermal camera 12;
A projector 14, this projector 14 is positioned at the back side of touch area 20, and can be to the soft curtain of projection 16 projection images;
All projector's projection and infrared camera photographic images cover whole touch-screens;
(1) starts LED, video camera and projector 50;
(2) thermal camera is taken the raw image data 51 on the touch panel;
(3) projector is invested soft curtain 52 with image;
(4) thermal camera processor that the raw image data on the touch panel that photographs is delivered to the execution command of computing machine goes background by software, increases the light and shade contrast, filters noise 53;
(5) a plurality of points 54 on the driving touch-screen;
(6) thermal camera is taken the touch view data 55 on the touch panel;
(7) projector is invested soft curtain 56 with image;
(8) thermal camera is delivered to the touch view data on the touch panel that photographs the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement 57 of several contacts and each point;
(9) contact information that transmits according to driver of the application program in the software is carried out corresponding action and order 58;
(10) repeating step (4)-(9) begin new circulation.
Embodiment 6.Present embodiment has been described a kind of localization method of realizing multiple point touching as the touch panel device of above-mentioned embodiment 4 that uses, and this method comprises following step:
(1) starts LED, all video cameras and all projector;
(2) each thermal camera is taken the raw image data on the zone separately;
(3) each projector is invested soft curtain with the each several part image;
(4) processor of delivering to the execution command of computing machine of the raw image data on each thermal camera touch area separately that will photograph goes background by software, increases the light and shade contrast, filters noise;
(5) drive a plurality of points on each touch area;
(6) each thermal camera is taken the touch view data on the touch area separately;
(7) each projector is combined into a complete image with image trend of purchasing projection screen separately;
(8) the touch view data on each thermal camera touch area separately that will photograph is delivered to the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement of several contacts and each point, and touch information is separately passed to splice program;
(9) splice program is carried out coordinate conversion according to the contact information that each driver transmits, and action conversion, and object identification or the like are spliced into the touch information of whole giant-screen, and this touch information is passed to application program;
(10) application program in the software is carried out corresponding action and order according to the contact information that driver transmits;
(11) repeating step (4)-(10) begin new circulation.
Claims (8)
1. multi-point touch screen device is characterized in that comprising:
A high touch panel transparent, that the high material of leaded light performance is made;
A plurality of LED that Infrared is provided, these LED are arranged on the side of above-mentioned touch panel, and Infrared is injected touch panel from the side;
A kind of diaphragm that stops extraneous Infrared is attached to above the touch panel;
The soft curtain of projection, the soft curtain of this projection is attached to the back side of above-mentioned touch panel;
A thermal camera, this position for video camera in above-mentioned touch panel the back side, and can photograph the image at the touch panel back side;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera camera lens;
A projector, this projector is positioned at the back side of above-mentioned touch panel, and can be to the soft curtain projection of projection image;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Touch panel registers touch events, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains this touch by corresponding software, and execution is based on the operation of this touch event
Four sides of this touch panel are polished; A plurality of Infrared of ultrared LED that provide are injected in it from the side all around of this touch panel, and propagate at inner full-reflection, when object touches the panel of this touch panel, the touch place total reflection is destroyed, scattering takes place in infrared ray herein, produces infrared imaging
This infrared LED be installed in this touch panel around, the edge of this touch panel is enough transparent, when this touch panel surface of finger contact, finger is extruded away with the air layer between this touch panel, total reflection is destroyed, so this regional light will directive finger and diffuse reflection takes place downwards, this thermal camera that is placed on below this touch panel just can capture a bright spot, calculate the centre distance of bright spot, just can obtain touch location.
2. multiple spot and object touch panel device is characterized in that comprising:
A high touch panel transparent, that the high material of leaded light performance is made;
A plurality of LED that Infrared is provided, these LED are arranged on the side of above-mentioned touch panel, and Infrared is injected touch panel from the side;
Layer of transparent and resilient silica gel, this layer silica gel is coated in the front of above-mentioned touch panel;
The soft curtain of projection, the soft curtain of this projection has ventilative and can stop extraneous ultrared performance, it be placed on above-mentioned layer of silica gel above;
A thermal camera, this position for video camera in above-mentioned touch panel the back side, and can photograph the image at the back side of touch panel;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera camera lens;
A projector, this projector is positioned at the back side of above-mentioned touch panel, and can throw image to projection screen;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Touch panel registers touch events, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains this touch by corresponding software, and execution is based on the operation of this touch event
Four sides of this touch panel are polished; A plurality of Infrared of ultrared LED that provide are injected in it from the side all around of this touch panel, and propagate at inner full-reflection, when object touches the panel of this touch panel, the touch place total reflection is destroyed, scattering takes place in infrared ray herein, produces infrared imaging
This infrared LED be installed in this touch panel around, the edge of this touch panel is enough transparent, when this touch panel surface of finger contact, finger is extruded away with the air layer between this touch panel, total reflection is destroyed, so this regional light will directive finger and diffuse reflection takes place downwards, this thermal camera that is placed on below this touch panel just can capture a bright spot, calculate the centre distance of bright spot, just can obtain touch location.
3. multiple spot and object touch panel device is characterized in that comprising:
A high touch panel transparent, that the high material of leaded light performance is made;
The LED matrix that infrared light is provided, this LED matrix is arranged on the back side of above-mentioned touch panel;
The soft curtain of projection, the soft curtain of this projection is attached to the back side of above-mentioned touch panel;
A thermal camera, this position for video camera be in the back side of above-mentioned touch panel, and can photograph the image at the back side of touch panel;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera;
A projector, this projector is positioned at the back side of above-mentioned touch panel, and can be to the soft curtain projection of projection image;
One or more can be attached to the benchmark label on the material object, and this label is the label that has the reflective infrared imaging pattern of cross-platform Computer Vision Recognition;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with thermal camera, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
The touch panel record is attached to the touch patterns of the benchmark label on the material object, and give controller touch signal, controller is handled these signals, and with the sample contrast coupling of the label infrared external reflection imaging of gathering in advance, confirming which kind of touches object, and the coordinate at object place and angle, whether in motion and travel direction, and carry out accordingly and operate
Four sides of this touch panel are polished; A plurality of Infrared of ultrared LED that provide are injected in it from the side all around of this touch panel, and propagate at inner full-reflection, when object touches the panel of this touch panel, the touch place total reflection is destroyed, scattering takes place in infrared ray herein, produces infrared imaging
This infrared LED be installed in this touch panel around, the edge of this touch panel is enough transparent, when this touch panel surface of finger contact, finger is extruded away with the air layer between this touch panel, total reflection is destroyed, so this regional light will directive finger and diffuse reflection takes place downwards, this thermal camera that is placed on below this touch panel just can capture a bright spot, calculate the centre distance of bright spot, just can obtain touch location.
4. according to claim 1 or 2 or 3 described multiple spots or multiple spot and object touch panel device, the material that it is characterized in that said making touch panel can be ultra-clear glasses or acryhic material or polymethyl methacrylate material.
5. multiple spot according to claim 4 or multiple spot and object touch panel device is characterized in that the said LED that infrared light is provided is that emission infrared light wavelength is the LED of 850nm; Said infrared fileter is that the admittance Infrared wavelength is the optical filter of 850nm light wave.
6. multi-point touch screen device is characterized in that comprising:
A high super large touch panel transparent, that the high material of leaded light performance is made, this panel forms by a plurality of touch areas are seamless spliced;
A plurality of LED that infrared light is provided, these LED are arranged on four sides of above-mentioned super large touch panel;
A super-large projection curtain, this projection screen is attached to the back side of above-mentioned touch panel;
An i/o controller, this controller comprises input interface and output interface, and wherein an end of input interface is connected with a plurality of thermal cameras, and the other end is connected with the input interface of the processor of computer executed instructions; One end of output interface is connected with the output interface of the processor of computer executed instructions, and the other end is connected with a plurality of projector;
A computer executed instructions processor, this processor are used for the analysis calculation method and the programmed algorithm of touch event, and show control according to the requirement of touch-control;
Above-mentioned each touch area disposes respectively:
A thermal camera, this position for video camera be in the back side of above-mentioned touch area, and can photograph the infrared imaging at the back side of this touch area;
An infrared fileter, this infrared fileter is positioned at the front of thermal camera;
A projector, this projector is positioned at the back side of above-mentioned touch area, and can throw image to projection screen;
All projector's projection and infrared camera photographic images cover whole touch-screens;
Thermal camera is gathered touch event, and give controller touch signal, controller is handled these signals, again touch event and touch position data is transferred to the computer executed instructions processor and explains this touch by corresponding software, and execution is based on the operation of this touch event
Four sides of this touch panel are polished; A plurality of Infrared of ultrared LED that provide are injected in it from the side all around of this touch panel, and propagate at inner full-reflection, when object touches the panel of this touch panel, the touch place total reflection is destroyed, scattering takes place in infrared ray herein, produces infrared imaging
This infrared LED be installed in this touch panel around, the edge of this touch panel is enough transparent, when this touch panel surface of finger contact, finger is extruded away with the air layer between this touch panel, total reflection is destroyed, so this regional light will directive finger and diffuse reflection takes place downwards, this thermal camera that is placed on below this touch panel just can capture a bright spot, calculate the centre distance of bright spot, just can obtain touch location.
7. the touch panel device of a use such as claim 1 or 2 or 3 is realized the localization method of multiple point touching, it is characterized in that comprising following step:
(1) starts LED, video camera and projector;
(2) thermal camera is taken the raw image data on the touch panel;
(3) projector is invested soft curtain with image;
(4) thermal camera processor that the raw image data on the touch panel that photographs is delivered to the execution command of computing machine goes background by software, increases the light and shade contrast, filters noise;
(5) a plurality of points on the driving touch-screen;
(6) thermal camera is taken the touch view data on the touch panel;
(7) projector is invested soft curtain with image;
(8) thermal camera is delivered to the touch view data on the touch panel that photographs the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement of several contacts and each point;
(9) application program in the software is carried out corresponding action and order according to the contact information that driver transmits;
(10) repeating step (5)-(9) begin new circulation.
8. localization method that uses touch panel device as claimed in claim 6 to realize multiple point touching, it is characterized in that each independently can adopt above-mentioned localization method respectively in the touch area, touch information with each isolated area is aggregated on the splice program again, splice program is passed to application program with spliced touch information, and it comprises following step:
(1) starts LED, all video cameras and all projector;
(2) each thermal camera is taken the raw image data on the zone separately;
(3) each projector is invested soft curtain with the each several part image;
(4) processor of delivering to the execution command of computing machine of the raw image data on each thermal camera touch area separately that will photograph goes background by software, increases the light and shade contrast, filters noise;
(5) drive a plurality of points on each touch area;
(6) each thermal camera is taken the touch view data on the touch area separately;
(7) each projector is combined into a complete image with image trend of purchasing projection screen separately;
(8) the touch view data on each thermal camera touch area separately that will photograph is delivered to the processor of execution command of computing machine by the driver in the software relatively present image and original image, with the identification touch point, define the position and the displacement of several contacts and each point, and touch information is separately passed to splice program;
(9) splice program is carried out coordinate conversion according to the contact information that each driver transmits, the action conversion, and object identification is spliced into the touch information of whole giant-screen, and this touch information is passed to application program;
(10) application program in the software is carried out corresponding action and order according to the contact information that driver transmits;
(11) repeating step (4)-(10) begin new circulation.
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| CN2008100657145A CN101231450B (en) | 2008-02-25 | 2008-02-25 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
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| CN2008100657145A CN101231450B (en) | 2008-02-25 | 2008-02-25 | Multipoint and object touch panel arrangement as well as multipoint touch orientation method |
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| CN101231450B true CN101231450B (en) | 2010-12-22 |
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