CN101950221A - Multi-touch device based on sphere display and multi-touch method thereof - Google Patents
Multi-touch device based on sphere display and multi-touch method thereof Download PDFInfo
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- CN101950221A CN101950221A CN 201010276410 CN201010276410A CN101950221A CN 101950221 A CN101950221 A CN 101950221A CN 201010276410 CN201010276410 CN 201010276410 CN 201010276410 A CN201010276410 A CN 201010276410A CN 101950221 A CN101950221 A CN 101950221A
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Abstract
The invention relates to a multi-touch device based on sphere display and a multi-touch method thereof. The device comprises a touch dome-screen, a projector, and an infrared LED. The device is characterized by being further provided with a dome-screen lens, a video camera with an infrared camera, a special filter and a computer. The touch dome-screen is prepared by the dome-screen materials through which the infrared projection can pass, the lower part of the touch dome-screen is provided with an opening, the infrared LED is arranged at the opening; the dome-screen lens is arranged in the middle of the opening and projects coloured lights from the projector to the touch dome-screen; the computer is respectively connected with the video camera and the projector and is used for respectively controlling the projector to project images to the touch dome-screen, the infrared camera of the video camera to collect images on the touch dome-screen and analyze and calculate the collected touch events on the touch dome-screen, and the projector to display the analyzed and calculated result.
Description
Technical field
The present invention relates to a kind of spherical touch screen technology, especially relate to a kind of based on the multipoint touching device of sphere demonstration and the multi-point touch method of realizing with this device.
Background technology
Touch-screen is widely used in various electronic at present, be 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 the shield grating causes some LED not receive infrared light, conducting situation by mensuration level and vertical infrared reception LED is determined touch position coordinates, also have by adopting direct projection and trembling and penetrate the grating that power valve forms 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.Therefore the multipoint mode touch screen technology has appearred, existing multipoint mode touch screen technology has: 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.
But above various touching techniques all are applied in the plane touch-screen, also are not applicable to the touching technique of spherical screen.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of multipoint touching device that shows based on sphere and the multi-point touch method of realizing with this device, can on spherical curtain, realize the multiple point touching location and reduce and judge by accident.
Technical scheme of the present invention is as follows:
A kind of multipoint touching device that shows based on sphere comprises touch ball curtain, projector, infrared LED, it is characterized in that: also comprises ball curtain camera lens, has the video camera of infrared camera, special-purpose filter and computing machine; The touch ball curtain that described touch ball curtain is made for projection ball's curtain material that can see through infrared light, an opening is arranged at described touch ball curtain bottom; Described infrared LED is positioned at this opening part, touches the ball curtain to ring Infrared is provided; Described ball curtain camera lens is positioned at this opening center, and the coloured light that projector sends is projected on the touch ball curtain; Described computing machine is connected with projector with video camera respectively, described computing machine be used to control projector to the infrared camera of the projection of described touch ball curtain, control video camera to the collection that touches ball curtain epigraph, the touch event on the touch ball curtain that collects is carried out analytical calculation, and projector is shown control according to analysis result; Described special-purpose filter comprises and is arranged on the infrared filter that infrared camera front aglow outer filter of filter visible light that filters out other light beyond the infrared light and the front that is arranged on projector lens filter out infrared light.
Described infrared LED be arranged on described touch ball curtain bottom around edge of opening part inboard or that do not blocked around ball curtain camera lens tip edges or described opening part by ball curtain camera lens.
Described infrared LED was provided with for two weeks around inboard, ball curtain lower openings edge or two weeks was set or by the part that ball curtain camera lens blocks is not set two weeks at described opening part around ball curtain camera lens, made Infrared can shine equably on the described touch ball curtain.
The described multipoint touching device that shows based on sphere also comprises a catoptron, the reflecting optics of described catoptron is arranged on ball curtain camera lens inside, described ball curtain camera lens correspondence is provided with the reflected light path and the transmitted light path of reflecting optics, described reflected light path is over against infrared camera, described transmitted light path is positioned on the projecting direction of projector, and described catoptron can pass through other light and reflects infrared light; Described projector is positioned at the bottom of ball curtain camera lens, to throw image to touching the ball curtain.
Group and back group before described ball curtain camera lens comprises are on the position before and after described reflecting optics is arranged between the group; Described infrared camera is arranged on the inside of ball curtain camera lens, and is same on the position between the group of front and back, is used to receive the infrared light of above-mentioned reflecting optics reflection, and range of receiving can photograph the image of whole touch ball curtain.
The described multipoint touching device that shows based on sphere also comprises a catoptron, and the reflecting optics of described catoptron is arranged on the positive bottom of ball curtain camera lens, and set-up mode is to pass through other light, reflects infrared light; Described infrared camera is arranged on the side of the bottom of ball curtain camera lens, can receive the infrared light of above-mentioned reflecting optics reflection, and range of receiving can photograph the image of whole touch ball curtain; Described projector is positioned at the bottom of ball curtain camera lens, throws image by ball curtain camera lens to touching the ball curtain.
The described multipoint touching device that shows based on sphere also comprises a catoptron, and the reflecting optics of described catoptron is provided with the positive bottom of ball curtain camera lens, and set-up mode is for reflecting other light by infrared light; Described infrared camera is arranged on the positive bottom of reflecting optics under the ball curtain camera lens, and to receive the infrared light by described reflecting optics, range of receiving can photograph the image of whole touch ball curtain; Side and its projecting light path that described projector is arranged on the bottom of ball curtain camera lens are positioned on the reflected light path of described reflecting optics, to throw image by described reflecting optics to described touch ball curtain.
Described touch ball curtain is organic glass, acrylic plate, ultra-clear glasses, acryhic material or polymethyl methacrylate material.
Described infrared LED infrared light wavelength is 850nm--880nm, and described infrared fileter is that the admittance Infrared wavelength is the optical filter of respective wavelength.
Described infrared camera is arranged on described opening part, and is provided with near described ball curtain camera lens.
The multi-point touch method that the above-mentioned multipoint touching device of a kind of usefulness is realized is characterized in that may further comprise the steps:
(1) starts infrared LED, infrared camera and projector;
(2) projector is invested image and is touched the ball curtain;
(3) infrared camera photographs the original infrared picture data that touches in the ball curtain;
(4) the original infrared picture data on the infrared camera touch ball curtain that will photograph is delivered to Computer Processing, goes background by software, increases the light and shade contrast, filters noise;
(5) drive a plurality of points that touch on the ball curtain;
(6) infrared camera is taken the touch infrared picture data that touches on the ball curtain;
(7) the touch infrared picture data on the infrared camera touch ball curtain that will photograph is delivered to computing machine, more current touch infrared picture data of computing machine and original infrared picture data, with the identification touch point, define the position and the displacement of several contacts and each point, and position and action are followed the trail of;
(8) computing machine is made a response according to the position and the action of contact, and picture signal is transferred to projector;
(9) projector is touching projection on the ball curtain in real time according to the computing machine indication;
(10) repeating step (5)-(9) begin new circulation.
Technique effect of the present invention is:
Adopt multipoint touching device of the present invention, and use multi-point touch method of the present invention, just can distinguish a plurality of touch points that touch simultaneously on the ball curtain touching, 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.
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 is in extensive range;
3, the efficiency of algorithm height of realization multipoint positioning, touch point position coordinates convenience of calculation, accurate, reliable.
4, the present invention has realized interaction function on spherical screen.
Description of drawings
Fig. 1 is one of the embodiment of a multipoint touching device of the present invention structural representation;
Fig. 2 is one of the embodiment of a multipoint touching device of the present invention structural representation;
Fig. 3 is one of the embodiment of a multipoint touching device of the present invention structural representation;
Fig. 4 is one of the embodiment of a multipoint touching device of the present invention structural representation;
Fig. 5 is that infrared LED is arranged on the synoptic diagram that touches ball curtain bottom;
Fig. 6 is that infrared LED is arranged on the synoptic diagram on the ball curtain camera lens;
Fig. 7 is the vertical view that the ball curtain camera lens behind the infrared LED is set;
The original infrared image of touch ball curtain that Fig. 8 grasps for camera;
Fig. 9 touches the image that camera grabs on the ball curtain for hand is placed on.
Reference numeral lists as follows:
1-touches the ball curtain, 2-ball curtain camera lens, 3-infrared LED, 4-infrared camera, 5-projector, 6-catoptron, the infrared filter of 7-, the aglow outer filter of 8-filter visible light, 9-computing machine.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.Fig. 1 is the structural representation that the present invention is based on the spherical a kind of embodiment of multipoint touching device that shows.Multipoint touching device among Fig. 1 comprises touch ball curtain 1, projector 5, infrared LED 3, and being applied to the spherical infrared LED that shows 3 needs use high-power infrared LED, also comprises ball curtain camera lens 2, has the video camera of infrared camera 4, special-purpose filter and computing machine 9; Touch the touch ball curtain that ball curtain 1 is made for projection ball's curtain material that can see through infrared light, touching ball curtain 1 bottom has an opening, and infrared LED 3 is positioned at this opening part, from upwards irradiation of opening part, touches ball curtain 1 to whole ring Infrared is provided; Ball curtain camera lens 2 is positioned at this opening center, and the coloured light that projector 5 sends is projected on the touch ball curtain, and ball curtain camera lens 2 is a fish eye lens; Computing machine 9 is connected with projector 5 with video camera respectively, computing machine 9 is used to control projector 5 to touch the collection of ball curtain 1 epigraph, the touch event on the touch ball curtain 1 that collects is carried out analytical calculation, and according to analysis result projector 5 is shown control to the projection of touch ball curtain 1,4 pairs of the infrared cameras of control video camera; Described special-purpose filter comprises and is arranged on the infrared filter 7 that infrared camera 4 fronts aglow outer filter 8 of filter visible light that filters out other light beyond the infrared light and the front that is arranged on projector 5 camera lenses filter out infrared light.Present embodiment also comprises a catoptron 6, and the reflecting optics of catoptron 6 is arranged on ball curtain camera lens 2 inside, ball curtain camera lens 2 is as fish eye lens, group and back group two set of shots before comprising, on the position before and after catoptron 6 is arranged between the group, the reflecting optics of catoptron 6 is inclined to set among Fig. 1, ball curtain camera lens 2 correspondences are provided with the reflected light path and the transmitted light path of reflecting optics, described reflected light path is over against infrared camera 4, described transmitted light path is positioned on the projecting direction of projector 5, and catoptron 6 can pass through other light and reflects infrared light, and promptly projector 5 is positioned at the bottom of ball curtain camera lens 2, and under being, can be to touching ball curtain 1 projection image.Catoptron 6 is arranged in the ball curtain camera lens 2, can make compact conformation of the present invention, certainly, ball curtain camera lens 2 the first half of this moment are touching ball curtain 1 inside, the latter half is positioned at outside the opening that touches ball curtain 1 bottom, catoptron 6 is arranged on ball curtain camera lens 2 and is positioned at the outer part of opening that touches ball curtain 1 bottom, simultaneously, ball curtain camera lens 2 is provided with through hole on catoptron 6 reflected light place housings, to form the reflected light path, it is outer over against the infrared light of reflected light path with 6 reflections of reception catoptron that infrared camera 4 is arranged on this through hole.Further, infrared camera 4 can be set directly at the inside of ball curtain camera lens 2, be arranged on ball curtain camera lens 2 equally on the position between the group of described front and back, so that receive the infrared light of the reflecting optics reflection of catoptron 6 better, range of receiving can photograph the image of whole touch ball curtain, can find out among Fig. 1 that the part of infrared camera 6 camera lenses has been positioned at the inside of ball curtain camera lens 2, the aglow outer filter 8 of filter visible light that is provided with before infrared camera 6 camera lenses is positioned at ball curtain camera lens 2, described hole size can be suitable for the insertion of infrared camera 6 just, to reduce the interference of extraneous light.
The course of work of Fig. 1 is: open infrared LED 3, make and touch the inner evenly distribution infrared ray of ball curtain 1 spheroid, computing machine 9 connects projector 5 and gets picture, the infrared camera 4 of video camera is gathered picture, picture signal is transferred to computing machine 9, hand or object are placed on and touch on the ball curtain 1, can block the infrared ray that touches on the ball curtain 1 this moment, equally distributed infrared ray in the spheroid is destroyed, and this image is gathered by the infrared camera 4 of video camera, is transferred to computing machine 9, position and action that 9 pairs of conversation structure of computing machine are obtained hand or object, computing machine 9 is handled this touch action, makes a response the picture during projector 5 is made a response.
Fig. 2 and Fig. 3 are that the catoptron 6 that the present invention is based on the spherical multipoint touching device that shows is arranged on outside the touch ball curtain 1, and are positioned under touch ball curtain 1 opening, and are arranged on two embodiment of the situation of the positive bottom of ball curtain camera lens.Wherein, the set-up mode of catoptron 6 is obliquely installed among Fig. 2 embodiment, for vertically passing through other light, horizontal direction reflects infrared light; Infrared camera 4 is arranged on the side of the bottom of ball curtain camera lens 2, over against the reflected light path of catoptron 6, can receive the infrared light of catoptron 6 reflecting optics reflection, and range of receiving can photograph the image of whole touch ball curtain; 5 of projector are positioned at the positive bottom of catoptron 6, throw image by ball curtain camera lens 2 to touching the ball curtain.The set-up mode of catoptron 6 is that vertical direction can reflect other light by infrared light among Fig. 3 embodiment, horizontal direction reflects not reflects infrared light of other light, infrared camera 4 is arranged on the positive bottom of 2 times catoptrons 6 of ball curtain camera lens, to receive infrared light by described catoptron 6, range of receiving can photograph the image of whole touch ball curtain 1, side and its projecting light path that 5 of projector are arranged on the bottom of ball curtain camera lens 2 are positioned on the reflected light path of described catoptron 6, to throw image by catoptron 6 to touching ball curtain 1.
It is embodiment illustrated in fig. 4 for the situation of catoptron is not set.Infrared camera 4 is positioned at the opening part that touches ball curtain 1 bottom with ball curtain camera lens 2, and the benefit of She Zhiing is to have reduced catoptron like this, has reduced cost of products.
The multi-point touch method that above-mentioned multipoint touching device is realized is characterized in that may further comprise the steps:
(1) starts infrared LED 3, infrared camera 4 and projector 5;
(2) projector 5 is invested image and is touched ball curtain 1;
(3) infrared camera 4 photographs the original infrared image that touches in the ball curtain 1, forms original infrared picture data;
(4) the original infrared picture data on the infrared camera 4 touch ball curtain 1 that will photograph is delivered to computing machine 9 and is handled, and goes background by software, increases the light and shade contrast, filters noise;
(5) hand or other object are placed on and touch on the ball curtain 1, drive a plurality of points that touch on the ball curtain 1;
(6) infrared camera 4 is taken the touch infrared image that touches on the ball curtain 1, obtains current touch infrared picture data;
(7) the touch infrared picture data on the infrared camera 4 touch ball curtain 1 that will photograph is delivered to computing machine 9, computing machine 9 more current touch infrared picture data and original infrared picture data, with the identification touch point, define the position and the displacement of several contacts and each point, and position and action are followed the trail of;
(8) computing machine 9 is made a response according to the position and the action of contact, and picture signal is transferred to projector 5;
(9) 9 indications are touching projection on the ball curtain 1 to projector 5 in real time according to computing machine;
(10) repeating step (5)-(9) begin new circulation.
Claims (11)
1. a multipoint touching device that shows based on sphere comprises touch ball curtain, projector, infrared LED, it is characterized in that: also comprises ball curtain camera lens, has the video camera of infrared camera, special-purpose filter and computing machine; The touch ball curtain that described touch ball curtain is made for projection ball's curtain material that can see through infrared light, an opening is arranged at described touch ball curtain bottom; Described infrared LED is positioned at this opening part, touches the ball curtain to ring Infrared is provided; Described ball curtain camera lens is positioned at this opening center, and the coloured light that projector sends is projected on the touch ball curtain; Described computing machine is connected with projector with video camera respectively, described computing machine be used to control projector to the infrared camera of the projection of described touch ball curtain, control video camera to the collection that touches ball curtain epigraph, the touch event on the touch ball curtain that collects is carried out analytical calculation, and projector is shown control according to analysis result; Described special-purpose filter comprises and is arranged on the infrared filter that infrared camera front aglow outer filter of filter visible light that filters out other light beyond the infrared light and the front that is arranged on projector lens filter out infrared light.
2. the multipoint touching device that shows based on sphere according to claim 1, it is characterized in that described infrared LED be arranged on described touch ball curtain bottom around edge of opening part inboard or that do not blocked around ball curtain camera lens tip edges or described opening part by ball curtain camera lens.
3. the multipoint touching device that shows based on sphere according to claim 2, it is characterized in that described infrared LED was provided with for two weeks around inboard, ball curtain lower openings edge or two weeks was set or by the part that ball curtain camera lens blocks is not set two weeks at described opening part around ball curtain camera lens, made Infrared can shine equably on the described touch ball curtain.
4. according to claim 1 or the 2 or 3 described multipoint touching devices that show based on sphere, it is characterized in that: also comprise a catoptron, the reflecting optics of described catoptron is arranged on ball curtain camera lens inside, described ball curtain camera lens correspondence is provided with the reflected light path and the transmitted light path of reflecting optics, described reflected light path is over against infrared camera, described transmitted light path is positioned on the projecting direction of projector, and described catoptron can pass through other light and reflects infrared light; Described projector is positioned at the bottom of ball curtain camera lens, to throw image to touching the ball curtain.
5. the multipoint touching device that shows based on sphere according to claim 4 is characterized in that: group and back group before described ball curtain camera lens comprises, on the position before and after described reflecting optics is arranged between the group; Described infrared camera is arranged on the inside of ball curtain camera lens, and is same on the position between the group of front and back, is used to receive the infrared light of above-mentioned reflecting optics reflection, and range of receiving can photograph the image of whole touch ball curtain.
6. according to claim 1 or the 2 or 3 described multipoint touching devices that show based on sphere, it is characterized in that: also comprise a catoptron, the reflecting optics of described catoptron is arranged on the positive bottom of ball curtain camera lens, and set-up mode is to pass through other light, reflects infrared light; Described infrared camera is arranged on the side of the bottom of ball curtain camera lens, can receive the infrared light of above-mentioned reflecting optics reflection, and range of receiving can photograph the image of whole touch ball curtain; Described projector is positioned at the bottom of ball curtain camera lens, throws image by ball curtain camera lens to touching the ball curtain.
7. according to claim 1 or the 2 or 3 described multipoint touching devices that show based on sphere, it is characterized in that: also comprise a catoptron, the reflecting optics of described catoptron is provided with the positive bottom of ball curtain camera lens, and set-up mode is for reflecting other light by infrared light; Described infrared camera is arranged on the positive bottom of reflecting optics under the ball curtain camera lens, and to receive the infrared light by described reflecting optics, range of receiving can photograph the image of whole touch ball curtain; Side and its projecting light path that described projector is arranged on the bottom of ball curtain camera lens are positioned on the reflected light path of described reflecting optics, to throw image by described reflecting optics to described touch ball curtain.
8. according to claim 1 or the 2 or 3 described multipoint touching devices that show based on sphere, it is characterized in that: described touch ball curtain is organic glass, acrylic plate, ultra-clear glasses, acryhic material or polymethyl methacrylate material.
9. according to claim 1 or the 2 or 3 described multi-point touch screen devices that show based on sphere, it is characterized in that: described infrared LED infrared light wavelength is 850nm--880nm, and described infrared fileter is that the admittance Infrared wavelength is the optical filter of respective wavelength.
10. according to claim 1 or the 2 or 3 described multipoint touching devices that show based on sphere, it is characterized in that described infrared camera is arranged on described opening part, and be provided with near described ball curtain camera lens.
11. one kind with the multi-point touch method of realizing as the described multipoint touching device of one of claim 1-10, it is characterized in that may further comprise the steps:
(1) starts infrared LED, infrared camera and projector;
(2) projector is invested image and is touched the ball curtain;
(3) infrared camera photographs the original infrared picture data that touches in the ball curtain;
(4) the original infrared picture data on the infrared camera touch ball curtain that will photograph is delivered to Computer Processing, goes background by software, increases the light and shade contrast, filters noise;
(5) drive a plurality of points that touch on the ball curtain;
(6) infrared camera is taken the touch infrared picture data that touches on the ball curtain;
(7) the touch infrared picture data on the infrared camera touch ball curtain that will photograph is delivered to computing machine, more current touch infrared picture data of computing machine and original infrared picture data, with the identification touch point, define the position and the displacement of several contacts and each point, and position and action are followed the trail of;
(8) computing machine is made a response according to the position and the action of contact, and picture signal is transferred to projector;
(9) projector is touching projection on the ball curtain in real time according to the computing machine indication;
(10) repeating step (5)-(9) begin new circulation.
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| CN 201010276410 CN101950221A (en) | 2010-09-07 | 2010-09-07 | Multi-touch device based on sphere display and multi-touch method thereof |
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| CN 201010276410 CN101950221A (en) | 2010-09-07 | 2010-09-07 | Multi-touch device based on sphere display and multi-touch method thereof |
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| CN103019478A (en) * | 2012-12-14 | 2013-04-03 | 中国科学院深圳先进技术研究院 | Touch control device and touch control detection method based on curved face display |
| CN107506690A (en) * | 2017-07-20 | 2017-12-22 | 何东波 | A kind of personal recognition device |
| CN108917189A (en) * | 2018-07-27 | 2018-11-30 | 东莞市联洲知识产权运营管理有限公司 | A kind of wall-mounted Digiplex on intelligent water heater |
| US11392013B2 (en) | 2018-04-19 | 2022-07-19 | Hewlett-Packard Development Company, L.P. | Image rear-projection and image capture |
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