CN101859189A - Optical input system and method - Google Patents
Optical input system and method Download PDFInfo
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- CN101859189A CN101859189A CN200910081470A CN200910081470A CN101859189A CN 101859189 A CN101859189 A CN 101859189A CN 200910081470 A CN200910081470 A CN 200910081470A CN 200910081470 A CN200910081470 A CN 200910081470A CN 101859189 A CN101859189 A CN 101859189A
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Abstract
The invention discloses optical input system and method for reducing the realization cost of touch control. The system respectively collects the images of a light source and an operating body through two collecting modules to obtain the input information of the operating body in an input zone. Compared with the prior art, the optical input system has the advantages of simple structure, difficult damage and low manufacturing cost, and the corresponding input method also has the advantages of simple and easy implementation, high input precision and strong identification capacity.
Description
Technical field
The present invention relates to data typing and transmission field, relate in particular to a kind of optical input system and method.
Background technology
In the prior art, electronic equipment generally carries out the information input by mouse, keyboard or touch-screen etc.Touch-screen input operation wherein is simple and convenient, is a kind of input technology of importing data by the screen of touch display.Touch-screen is formed by touching detection part and touch controller.The former (promptly touching detection part) is positioned at the front of display screen, is mainly used in to detect the position that the user touches, and after the reception it delivered to touch screen controller.And latter's's (touch controller) main effect is from touching reception information on the detection part, and converts thereof into contact coordinate and deliver to central processing unit (CPU), also can receive the order that CPU sends simultaneously and is carried out.
Current touch control technology, mainly comprising vector pressure sensing type, resistance-type, condenser type, infrared-type and surface acoustic wave type or the like on know-why, all is to obtain by electric signal or ripple signal to be touched the position and then to realize touching control or input.
In realizing process of the present invention, the inventor finds prior art, all exists defective more or less, is example with resistance-type and condenser type commonly used, the main performance in the following areas:
(1) touches detection part complex process, cost height;
(2) touch detection part and generally all include film and coating, damage easily;
(3) general local damage is then whole just can't use the trace utilization cost height;
(4) be subjected to the influence of environment for use such as temperature and humidity etc. bigger, the levels of precision of input is limited;
(5) along with the prolongation of service time, the sensitivity meeting of inductive means reduces gradually;
(6) the touch-screen size is big more, and the cost of electronic equipment is high more, and the requirement of technical capability is big more.
Summary of the invention
Technical matters to be solved by this invention is to be a kind of optical input system and method need be provided, to reduce the realization cost that touches control.
In order to solve the problems of the technologies described above, the invention provides a kind of optical input system, comprising:
Light source;
First acquisition module is used to gather first image that is formed by described light source and operating body, and described operating body is arranged in an input area;
Second acquisition module; Be used to gather second image that forms by described light source and described operating body;
Computing module, link to each other with described first acquisition module and second acquisition module, be used for obtaining first parameter according to described first image, obtain second parameter according to described second image, and according to the distance of described first acquisition module and second acquisition module, and described first parameter and this second parameter, obtain the input information of described operating body in described input area;
Modular converter links to each other with described computing module, is used for described input information is converted to input signal;
Sending module links to each other with described modular converter, is used to send described input signal;
Wherein, described input area is formed by described light source, first acquisition module and second acquisition module.
Preferably, this optical input system is applied in the rectangular area, wherein:
Described light source comprises first pointolite and second pointolite;
Described first acquisition module and second acquisition module lay respectively at two summits on a certain limit, described rectangular area;
Described first pointolite and second pointolite lay respectively in addition two summits of described rectangular area, perhaps lay respectively at described first acquisition module and the second acquisition module place.
Preferably, this optical input system is applied in the rectangular area, wherein:
Described light source comprises line source;
Described first acquisition module and second acquisition module lay respectively at two summits on a certain limit, described rectangular area;
Described line source is positioned at the offside border on described two summits of described rectangular area.
Preferably, described first acquisition module is a camera; Described second acquisition module is another camera.
Preferably, described computing module comprises:
Parameter calculating module is used for obtaining first parameter according to described first image, obtains second parameter according to described second image;
First acquisition module links to each other with described parameter calculating module, is used for according to described distance, and described first parameter and second parameter, obtain the coordinate of described operating body in described input area;
Second acquisition module links to each other with described parameter calculating module, is used for according to described distance, and described first parameter and second parameter, obtains the sectional area approximate value of described operating body xsect.
Preferably, described first acquisition module based on the triangle positioning principle, obtains the coordinate of described operating body in described input area.
Preferably, described modular converter is used for the corresponding relation according to described sectional area approximate value and sectional area approximate value and display effect, obtains corresponding display effect.
In order to solve the problems of the technologies described above, the present invention also provides a kind of optical inputting method, comprising:
Gather first image by first acquisition module, described first image is formed by light source and operating body, and described operating body is arranged in an input area;
Gather second image by second acquisition module, described second image is formed by described light source and described operating body;
Obtain first parameter of described first image, and second parameter of described second image;
According to the distance of described first acquisition module and second acquisition module, and described first parameter and described second parameter, the input information of described operating body in described input area obtained;
Described input information is converted to input signal and transmission.
Preferably, described first parameter includes the deflection information of described operating body with respect to described first acquisition module;
Described second parameter includes the deflection information of described operating body with respect to described second acquisition module.
Preferably, described light source comprises pointolite or line source.
Preferably, described input information comprises the coordinate of described operating body in described input area, and the sectional area approximate value of described operating body xsect.
Preferably, the coordinate of described operating body in described input area obtains based on the triangle positioning principle.
Preferably, in the described input signal, comprise, obtain corresponding display effect according to the corresponding relation of described sectional area approximate value and sectional area approximate value and display effect.
Compared with prior art, the optical input system among the present invention is simple in structure, and is not fragile, low cost of manufacture.Optical inputting method among the present invention, rely on optical principle, first-class optically detecting module is gathered input information by making a video recording, be subjected to the influence of environment such as temperature and humidity etc. less, by geometry principle, can identify the input information of the different live widths of continuous input, input degree of accuracy height, recognition capability is strong.The input area of optical input system of the present invention, the difference of size is only adjusted the position of optically detecting module to almost not influence of manufacturing cost, can realize the input area of different sizes, and can keep precision for a long time, can not reduce input precision along with the prolongation of service time.
Description of drawings
Fig. 1 obtains the principle schematic of operating body with respect to the camera deflection under the pointolite situation.
Fig. 2 obtains the principle schematic of operating body with respect to the camera deflection under the line source situation.
Fig. 3 is the principle schematic that obtains operating body coordinate and xsect among the present invention by dual camera.
Fig. 4 is the composition synoptic diagram of optical input system one embodiment among the present invention.
Fig. 5 is the composition synoptic diagram of computing module among the system shown in Figure 4 embodiment.
Fig. 6 is the floor map of system shown in Figure 4 embodiment.
Fig. 7 is the flow chart of steps of optical inputting method one embodiment among the present invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical matters to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
Fig. 1 obtains the principle schematic of operating body with respect to the camera deflection under the pointolite situation.As shown in Figure 1, in a rectangular area, one camera S is positioned at top left corner apex, one scattering pointolite (not shown) is positioned at this camera S place (certainly, be positioned at the near zone of this camera S, also be fine), an xsect is positioned at this rectangular area for the operating body (such as finger or pencil type apparatus) of circular (or approaching circle).In this case, the lower right on summit, this camera S place (being right side and downside) scope is the pickup area of this camera S.The light of pointolite emission, can form reflection when shining this operating body, promptly form a hot spot, therefore camera S is when images acquired, can lodge the light of this reflection, obtain the orientation of this operating body in the camera visual field, promptly by the position of identification hot spot in image, calculate hot spot in the position of image, thereby obtain the bearing range of this operating body in the pickup area of camera.By obtaining the orientation of this operating body in the camera visual field, can obtain the deflection of operating body orientation of living in respect to camera.
Fig. 1 has provided typical case's signal in the three kind orientation of operating body in the camera visual field.As shown in Figure 1, three kinds of orientation are respectively first orientation O1, second orientation O2 and third party position O3.Second orientation O2 and third party position O3 represent that respectively operating body is positioned at the lower left corner vertex position and the upper right corner vertex position of rectangular area, first orientation O1, and the expression operating body is positioned at the centre of rectangular area.Under first orientation O1 situation, in the image that camera S gathers, it is block to contain a white, and both sides are the black strip, wherein should represent this operating body by the white bulk figure, black strip representative edge circle of both sides.Under second orientation O2 situation, in the image that camera S gathers, represent the white bulk of operating body to be arranged in the leftmost side of image, represent the black strip on rectangular area bottom and border, the right to be arranged in the right side of image.Under the O3 situation of third party position, in the image that camera S gathers, represent the white bulk of operating body to be arranged in the rightmost side of image, represent the black strip of rectangular area bottom and left boundary to be arranged in the left side of image.Provided among Fig. 1 under three kinds of orientation, operating body is arranged in the signal in the camera visual field, and wherein the white bulk is represented operating body, and the black strip is represented the border.Need to prove that because the embodiment of Fig. 1 gives an example with single camera, operating body is present on the direction of camera S and present first orientation O1 line, in the image of camera collection, the position of white blocks can not change, and just has the adjustment of size; Same reason also is applicable on the line direction of S and O2, O3.Therefore operating body is in this rectangular area when mobile, and the image that can be gathered by camera S obtains the movement locus of operating body in the one-dimensional space.Certainly if the embodiment of two cameras is arranged on adjacent place, two summits with camera, can be more prone to and the accurate position of determining operating body.
As shown in Figure 1, behind the orientation of acquisition operating body in the camera visual field, can calculate and obtain first direction angle J1 and the second direction angle J2 of operating body orientation with respect to camera.In this signal, be with two edges of operating body in the camera visual field, respectively with the formed angle of boundary.Certainly, deflection also can be represented by other angles, forms one of them deflection such as a certain edge and a certain border of operating body in the camera visual field, and operating body two edges in the camera visual field form another deflection, or the like.
In rectangular area shown in Figure 1, if light source and camera S lay respectively at two diagonal positions of this square region, still be positioned at this top left corner apex such as camera S, and light source is positioned at summit, the lower right corner,,, also be in the image gathered of camera S then so operating body is a black bulk in the visual field of camera S because the light of light emitted is blocked by this operating body, black is block represents operating body, and white strip is represented the border of rectangular area.
Fig. 2 obtains the principle schematic of operating body with respect to the camera deflection under the line source situation.Camera S is positioned at the top left corner apex of a rectangular area, and the line source (not shown) is arranged at the downside border of this rectangular area.Because the light of line source emission is blocked by this operating body,, also be that black is block represents operating body in the image gathered of camera S, and white strip is represented the border of rectangular area so operating body is a black bulk in the visual field of camera S.Still be example with three orientation shown in Figure 1, operating body is when first orientation O1, second orientation O2 and third party position O3, and camera S collects three kinds of images as shown in the figure respectively.Under first orientation O1 situation, in the image that camera S gathers, contain a black bulk, both sides are white strip, wherein this black bulk figure is represented this operating body, white strip representative edge circle of both sides.Under second orientation O2 situation, in the image that camera S gathers, represent the black bulk of operating body to be arranged in the leftmost side of image, represent the white strip on border, rectangular area to be arranged in the right side of image.Under the O3 situation of third party position, in the image that camera S gathers, represent the black bulk of operating body to be arranged in the rightmost side of image, represent the white strip on border, rectangular area to be arranged in the left side of image.
In fact, the right side boundary that line source is positioned at the rectangular area also is fine, if also be the place, summit that camera is positioned at the rectangular area, then line source can be positioned at the offside border of camera.If camera is not the summit that is positioned at the rectangular area, but be positioned near centre position (mid point or mid point) on one side, rectangular area, then line source can be positioned at the not homonymy of camera, be positioned at the point midway of rectangular area left border such as camera, then line source can be positioned at right side boundary, boundary or the downside border of rectangular area.Certainly if the embodiment of two cameras is arranged on adjacent place, two summits with camera, the border of removing between two cameras is provided with three line sources, can be more prone to and the accurate position of determining operating body.
The embodiment of concrete application line source and camera is as follows:
Line source is made up of pointolite and light guide plate.Pointolite, two summits that are arranged at downside are located; Light guide plate is arranged at left side, right side and lower edge, and described light guide plate is relative with described pointolite at the end face at place, downside summit so that the light of described pointolite emission enter described light guide plate also by described light guide plate to the rectangular area inscattering; Light source and light guide plate butt joint above pointolite, have a protective seam, thereby protect described pointolite, owing to for the design of attractive in appearance and whole frame, need allow the whole protecting layer above light source and light guide plate; Camera, two summits that are arranged at upside are located, and towards the direction that described light guide plate is arranged, form an operating area between described camera and the described light guide plate.Wherein, pointolite can be LED, laser diode of various wavelength etc.; Wherein camera can be various types of image acquisition device, as optical sensor, camera, infrared camera or the like.
Preferably, above-mentioned light source can adopt infrared light supply, because the infrared light human eye is invisible, so can be very little for user's visual impact.Correspondingly, described image collecting device adopts infrared camera.Certainly, also can adopt other light sources and corresponding image collecting device, infrared light supply and infrared camera are applicable to pointolite and line source two class schemes certainly.
Obviously, the foregoing description only is a kind of preferred implementation of line source, specifically executes mode can also be, pointolite can be arranged in the light guide plate, rather than is arranged on the drift angle place; Can use separately independently light source at each light guide plate, two light guide plate that also can be adjacent are used same light source; In addition, camera can be arranged on the non-drift angle place at the display screen edge that light guide plate is not set, as long as it can collect the light of part light guide plate institute scattering at least.In addition, light guide plate also can be the leaded light device of various other shapes, for example right cylinder, rectangular parallelepiped, prism or the like.Light guide plate can substitute with lateral emitting type optical fiber or reflecting strips in addition.
In addition, line source and camera can also be to be provided with in the following manner, are that to be applied to an optical touch display screen be example with line source and camera: the place, two summits that pointolite is arranged on the display screen upper end; Two cameras also are arranged on the place, two summits of the upper end of display screen.Light guide plate comprises light guide plate main body, wherein contain printing ink near scattering film one side, be used for scattered beam, also comprise scattering film, reflectance coating, and be arranged at the display screen edge, and the lower side of described light guide plate is along with the flush of display screen or be lower than the lower side edge of light guide plate, covers zone on the display screen surface with the light that guarantees institute's scattering.Be provided with lateral emitting type optical fiber at the light guide plate downside, optical fiber is consistent with the direction of light guide plate, promptly extend along same direction, and the light emission direction of optical fiber is towards the light guide plate direction, so that the light of launching from optical fiber can shine light guide plate, and enter in the light guide plate, in light guide plate, propagate.Pointolite is then aimed at the end face of optical fiber, so that make light enter optical fiber and along spread fiber; In this embodiment, adopt optical fiber to the mode of light guide plate for light, when keeping illumination effect, the part that optical unit exceeds screen can further reduce, and is more suitable for the equipment of more being strict with in the frame height is had.
In addition, line source can be formed with a plurality of LED lamps, and a plurality of LED lamps are with predetermined being spaced in line.Obviously, these LED lamps can be fixed with multiple mode, for example, can be arranged in the shaped as frame structure that has the hole, perhaps any other suitable mode.Because it is very near that the interval of these LED is provided with, its spacing should be less than the side of general touch operation body, such as finger, felt pen, and the quantity of LED lamp is more, so from integral body, its light that sends is very even, be similar to the light that an elongated linear light source is sent.
Fig. 3 is for obtaining the coordinate of operating body in input area and the principle schematic of xsect by dual camera among the present invention.As shown in Figure 3, the distance of the first camera S1 and the second camera S2 is C, and operating body B is positioned at the first camera S1 and the second camera S2 within sweep of the eye.The first pointolite (not shown) is positioned at the first camera S1 place, and the second pointolite (not shown) is positioned at the first camera S2 place.In the first camera S1 and the second camera S2 orientation in the visual field separately, obtain the deflection of the orientation of operating body B by operating body B with respect to the first camera S1 and the second camera S2.
Operating body B has two edges in the visual field of the first camera S1, as shown in Figure 3, be respectively the first edge k11 and the second edge k12; Operating body B also has two edges in the visual field of the second camera S2, be respectively the 3rd edge k21 and the 4th edge k22.As shown in Figure 3, the first edge k11 and the 3rd edge k21 and the 4th edge k22 intersect at the first intersection point P1 and the second intersection point P2 respectively, and the second edge k12 and the 3rd edge k21 and the 4th edge k22 intersect at the 3rd intersection point P3 and the 4th intersection point P4 respectively.
According to the triangle positioning principle in the geometry, distance C by the first camera S1 and the second camera S2, and the orientation of operating body B can obtain the coordinate that above-mentioned four intersection points are positioned at input area with respect to the deflection of the first camera S1 and the second camera S2.According to these four quadrilateral P1P2P4P3 that intersection point surrounded, by estimation or processing such as approximate, can obtain the sectional area scope of operating body B xsect on input area, perhaps be referred to as the sectional area approximate value.Such as, obtain the coordinate of above-mentioned four intersection points after, with the xsect of this quadrilateral as operating body B, according to putting P1, P2, P4, the coordinate of P3, can obtain the length of tetragonal four edges, and cornerwise length, because quadrilateral can be considered as being made up of two triangles, under known two leg-of-mutton three limit situations, can obtain two leg-of-mutton areas respectively, can obtain tetragonal area after the summation, and obtain the sectional area approximate value in view of the above.Certainly, specifically how according to the coordinate on four summits of quadrilateral, obtain this tetragonal area, the present invention does not do qualification.Also can obtain the sectional area approximate value of the area of inscribed circle, so that approximation is more accurate with this tetragonal area by further approximate as xsect.
According to the coordinate of operating body B on input area, can finish location to input coordinate.According to the sectional area approximate value of operating body B xsect, can when importing, obtain the thickness parameters of input lines in application-specific such as lines.
Fig. 4 is the composition synoptic diagram of optical input system one embodiment among the present invention.In conjunction with Fig. 1 and principle schematic shown in Figure 3, system embodiment shown in Figure 4 mainly comprises light source (not shown), first acquisition module 410, second acquisition module 420, computing module 430, information acquisition module 440, modular converter 450 and sending module 460, wherein:
Second acquisition module 420; Be used to gather second image that forms by this light source and this operating body;
Sending module 450 links to each other with this modular converter 440, is used for this input signal is sent, such as sending to back-end processing equipment.
It is to be noted, in the above-described embodiments, it must be to operate at an actual physical face that the input operation body does not need, as long as the operating body in the input area has blocked the part light that light source is launched, and can be gathered by camera, can obtain the input information of this operating body in this input area.Certainly, for the ease of operation, can be by the planar device of a physics, such as display screen, come the input operation of non-productive operation body, as long as this planar device makes input operation finish in this input area, even if input operation does not have practical basis to this planar device (certain space being arranged such as operating body and this planar device).
Fig. 5 is the composition synoptic diagram of aforementioned calculation module 430.As shown in Figure 5, aforementioned calculation module 430 comprises parameter calculating module 431, first acquisition module 432 and second acquisition module 433, wherein:
Parameter calculating module 431 links to each other with this first acquisition module 410 and second acquisition module 420, is used for obtaining first parameter according to this this first image, obtains second parameter according to this second image;
Above-mentioned second acquisition module 433 can adopt multiple evaluation method when obtaining the sectional area approximate value of this operating body xsect.In conjunction with principle schematic shown in Figure 3, after obtaining aforementioned four intersection points, can be directly with the xsect of these four formed quadrilaterals of intersection point as operating body, perhaps with the formed tetragonal inscribed circle of these four intersection points, in connect the xsect as operating body such as ellipse, inscribed polygon, even on four formed tetragonal four edges of intersection point, get the mid point on each bar limit and be connected to form a new quadrilateral, with the xsect of this new quadrilateral, all be fine as operating body.Obtain after the xsect,, calculate the sectional area approximate value of xsect, can solve according to prior art by estimation or mode such as approximate.In native system embodiment, be as the xsect of operating body with tetragonal inscribed circle.Need to prove that the application does not do concrete qualification to how estimating to obtain the sectional area approximate value of operating body xsect.
During below with the input lines, obtain the thickness parameters of input lines, and the corresponding applicating example that shows the thickness effect:
In the information typing, sectional area approximate value that can be by this xsect, the thickness of stroke when determining the information typing, such as in the application of using paintbrush etc., the sectional area approximate value of xsect is bigger, and corresponding typing stroke is thicker; The sectional area approximate value of xsect is less, and corresponding typing stroke is thinner.
Above-mentioned modular converter 440, according to the input signal that input information is changed, comprise sectional area approximate value according to the operating body xsect, and the corresponding relation of sectional area approximate value and display effect, obtain corresponding display effect, such as the live width of paintbrush when importing lines.The sectional area approximate value of modular converter 440 operating body xsects is set to some intervals, the stroke weight of different interval corresponding different display effects.Such as xsect for circle, be provided with three intervals, be respectively diameter 1-5 millimeter (mm), 5-10mm and more than the 10mm, the stroke weight of corresponding a kind of stroke input of each classification display effect is such as aforesaid live width.Such as cross-sectional diameter is 1-5mm, and corresponding live width is 3mm, and cross-sectional diameter is 5-10mm, and corresponding live width is 7mm, and cross-sectional diameter is that 10mm is above, and corresponding live width is 15mm.The rear end input processing equipment according to corresponding live width, presents corresponding display effect after receiving the input signal of sending module 450 transmissions.
The foregoing description changes in order more to embody thickness just to for example, can the precision that the interval is provided with is higher.
Among the optical input system embodiment of the invention described above, this light source can be two pointolites, is respectively first pointolite and second pointolite.Fig. 6 is the floor map of system shown in Figure 4 embodiment.As shown in Figure 6, top left corner apex and summit, the upper right corner in the rectangular area are provided with the first camera S11 and the second camera S21 respectively, this the first pointolite (not shown) and the second pointolite (not shown), be positioned at the summit, the lower left corner and the summit, the lower right corner of this rectangular area, this rectangular area is this input area, and operating body B1 is arranged in this rectangular area.Certainly, if the first camera S11 and the second camera S21 are positioned at the upper left corner and the lower left corner place, two summits of rectangular area, and first pointolite and second pointolite are positioned at two summits in the upper right corner and the lower right corner, perhaps first pointolite and second pointolite also are positioned at the upper left corner and the lower left corner place, two summits of rectangular area, all are feasible.Two cameras and two pointolites can also other multiple forms that are provided with, if input area is a rectangle, as long as then two cameras are positioned at two summits on a certain limit.First pointolite and second pointolite also can be provided with camera and be arranged at same position except being positioned at the position with respect to camera, promptly in two positions that camera is set, respectively establish a light source respectively again.
If light source is a line source, be under the situation of rectangular area then at input area, first acquisition module and second acquisition module are positioned at two summits on a certain limit of this rectangular area, and this line source is positioned at the offside border on these two summits, in other words the offside border on this a certain limit.
By above content as can be seen, in the system embodiment of the present invention, if the thickness of operating body is different, pairing stroke width generally can be not the same yet when then importing.If select the transformable operating body of a kind of thickness for use, the thickness that can capture operating body when then importing by the size of xsect sectional area approximate value in real time changes, thereby realizes the effect of typing stroke width real-time change.As operating body, the thickness that the variation of lines can be followed writing brush during the information typing changes so such as the operating body of selecting the writing brush shape for use, thereby can realize the writing effect of Brush calligraphy on data processing equipment.The application of paintbrush similarly can realize that by the rotation paintbrush thick line of typing lines changes.
Fig. 7 is the flow chart of steps of optical inputting method one embodiment among the present invention.In conjunction with Fig. 1 and optics input principle shown in Figure 3, and system embodiment shown in Figure 4, optical inputting method embodiment shown in Figure 7 mainly comprises the steps:
Step S710 gathers first image by first acquisition module, and this first image is formed by light source and operating body, and this operating body is arranged in an input area;
Step S720 obtains first parameter of this first image; This first parameter includes the deflection information of this operating body with respect to this first acquisition module;
Step S730 gathers second image by second acquisition module, and this second image is formed by light source and this operating body, and above-mentioned input area is determined by this light source, first acquisition module and second acquisition module;
Step S740 obtains second parameter of this second image; This second parameter includes the deflection information of this operating body with respect to this second acquisition module;
Step S750, according to the distance of this first acquisition module and second acquisition module, and this first parameter and second parameter, obtain the input information of this operating body in this input area; This input information comprises the coordinate of this operating body in this input area and the sectional area approximate value of xsect, and wherein this coordinate obtains based on the triangle positioning principle;
Step S760 is converted to input signal with this input information;
Step S770 sends to back-end processing equipment with this input signal.
Among the above-mentioned steps S760, in this input signal, comprise the sectional area approximate value according to the operating body xsect, the stroke weight of the display effect of acquisition is such as the live width of paintbrush when importing lines.In method embodiment of the present invention, above-mentioned first acquisition module and second acquisition module respectively are a camera.Above-mentioned input area is determined by light source, first acquisition module and second acquisition module.
Though the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technician in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (13)
1. an optical input system is characterized in that, comprising:
Light source;
First acquisition module is used to gather first image that is formed by described light source and operating body, and described operating body is arranged in an input area;
Second acquisition module; Be used to gather second image that forms by described light source and described operating body;
Computing module, link to each other with described first acquisition module and second acquisition module, be used for obtaining first parameter according to described first image, obtain second parameter according to described second image, and according to the distance of described first acquisition module and second acquisition module, and described first parameter and this second parameter, obtain the input information of described operating body in described input area;
Modular converter links to each other with described computing module, is used for described input information is converted to input signal;
Sending module links to each other with described modular converter, is used to send described input signal;
Wherein, described input area is formed by described light source, first acquisition module and second acquisition module.
2. optical input system as claimed in claim 1 is applied in the rectangular area, it is characterized in that:
Described light source comprises first pointolite and second pointolite;
Described first acquisition module and second acquisition module lay respectively at two summits on a certain limit, described rectangular area;
Described first pointolite and second pointolite lay respectively in addition two summits of described rectangular area, perhaps lay respectively at described first acquisition module and the second acquisition module place.
3. optical input system as claimed in claim 1 is applied in the rectangular area, it is characterized in that:
Described light source comprises line source;
Described first acquisition module and second acquisition module lay respectively at two summits on a certain limit, described rectangular area;
Described line source is positioned at the offside border on described two summits of described rectangular area.
4. as claim 1,2 or 3 described optical input systems, it is characterized in that:
Described first acquisition module is a camera;
Described second acquisition module is another camera.
5. as claim 1,2 or 3 described optical input systems, it is characterized in that described computing module comprises:
Parameter calculating module is used for obtaining first parameter according to described first image, obtains second parameter according to described second image;
First acquisition module links to each other with described parameter calculating module, is used for according to described distance, and described first parameter and second parameter, obtain the coordinate of described operating body in described input area;
Second acquisition module links to each other with described parameter calculating module, is used for according to described distance, and described first parameter and second parameter, obtains the sectional area approximate value of described operating body xsect.
6. optical input system as claimed in claim 5 is characterized in that:
Described first acquisition module based on the triangle positioning principle, obtains the coordinate of described operating body in described input area.
7. optical input system as claimed in claim 5 is characterized in that:
Described modular converter is used for the corresponding relation according to described sectional area approximate value and sectional area approximate value and display effect, obtains corresponding display effect.
8. an optical inputting method is characterized in that, comprising:
Gather first image by first acquisition module, described first image is formed by light source and operating body, and described operating body is arranged in an input area;
Gather second image by second acquisition module, described second image is formed by described light source and described operating body;
Obtain first parameter of described first image, and second parameter of described second image;
According to the distance of described first acquisition module and second acquisition module, and described first parameter and described second parameter, the input information of described operating body in described input area obtained;
Described input information is converted to input signal and transmission.
9. optical inputting method as claimed in claim 8 is characterized in that:
Described first parameter includes the deflection information of described operating body with respect to described first acquisition module;
Described second parameter includes the deflection information of described operating body with respect to described second acquisition module.
10. optical inputting method as claimed in claim 8 is characterized in that:
Described light source comprises pointolite or line source.
11. optical inputting method as claimed in claim 8 is characterized in that:
Described input information comprises the coordinate of described operating body in described input area, and the sectional area approximate value of described operating body xsect.
12. optical inputting method as claimed in claim 11 is characterized in that:
The coordinate of described operating body in described input area obtains based on the triangle positioning principle.
13. optical inputting method as claimed in claim 11 is characterized in that:
In the described input signal, comprise, obtain corresponding display effect according to the corresponding relation of described sectional area approximate value and sectional area approximate value and display effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100814704A CN101859189B (en) | 2009-04-08 | 2009-04-08 | Optical input system and method |
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| CN2009100814704A CN101859189B (en) | 2009-04-08 | 2009-04-08 | Optical input system and method |
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| CN101859189A true CN101859189A (en) | 2010-10-13 |
| CN101859189B CN101859189B (en) | 2012-05-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363635A (en) * | 2020-11-23 | 2021-02-12 | 北京建筑大学 | Man-machine interaction method and system based on luminous pen |
| CN112506361A (en) * | 2020-11-23 | 2021-03-16 | 北京建筑大学 | Man-machine interaction method and system based on light-emitting pen and double cameras |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4570839B2 (en) * | 2002-09-17 | 2010-10-27 | 株式会社リコー | Optical coordinate input device and optical coordinate input method |
| CN100498675C (en) * | 2003-12-26 | 2009-06-10 | 北京汇冠新技术有限公司 | Photoelectric detection positioning system and method for touch panel of computer |
| CN100538612C (en) * | 2005-12-16 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | Hand-written input system and method with vigour of style in writing effect |
| CN101271372B (en) * | 2008-05-06 | 2010-10-13 | 党韧 | Multi-point touch panel |
-
2009
- 2009-04-08 CN CN2009100814704A patent/CN101859189B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112363635A (en) * | 2020-11-23 | 2021-02-12 | 北京建筑大学 | Man-machine interaction method and system based on luminous pen |
| CN112506361A (en) * | 2020-11-23 | 2021-03-16 | 北京建筑大学 | Man-machine interaction method and system based on light-emitting pen and double cameras |
| CN112506361B (en) * | 2020-11-23 | 2023-02-28 | 北京建筑大学 | Man-machine interaction method and system based on light-emitting pen and double cameras |
| CN112363635B (en) * | 2020-11-23 | 2023-04-28 | 北京建筑大学 | Man-machine interaction method and system based on luminous pen |
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| CN101859189B (en) | 2012-05-09 |
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