WO2011127836A1 - 触摸定位方法和系统、以及显示器 - Google Patents
触摸定位方法和系统、以及显示器 Download PDFInfo
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- WO2011127836A1 WO2011127836A1 PCT/CN2011/072848 CN2011072848W WO2011127836A1 WO 2011127836 A1 WO2011127836 A1 WO 2011127836A1 CN 2011072848 W CN2011072848 W CN 2011072848W WO 2011127836 A1 WO2011127836 A1 WO 2011127836A1
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- WIPO (PCT)
- Prior art keywords
- touch object
- touch
- information
- mirrored
- position information
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
Definitions
- the present invention relates to the field of optoelectronic technologies, and in particular, to a touch positioning method and system, and a display. Background technique
- the camera touch screen With the camera touch screen, two camera images are used to collect the image data of the touch detection area. According to the position information of the touch object in the image data, the position of the touch object and the connection between the optical centers of the two cameras and the optical centers of the two cameras can be determined. The angle between the connections, and then triangulation, can be used to calculate the position of the touch object.
- the camera touch screen can precisely locate the touch object.
- the “ghost point” appears when the touch screen with the camera calculates the position information of the touch object. At this time, the touch screen with the camera head cannot accurately position the touch object.
- “ghost point” refers to the non-actual touch object. Summary of the invention
- the present invention provides a touch positioning method and system, and a display for accurately positioning a touch object during positioning of two or more touch objects.
- the present invention provides a touch positioning method applied to an optical touch screen including a touch detection area, two imaging devices, a light source, and a mirror, the touch detection area and the touch detection area being mirrored with respect to the mirror
- the touch detection zones are all located within the field of view of each imaging device, the method comprising:
- the invention also provides a touch positioning system, comprising: An optical touch screen comprising a touch detection area, two imaging devices, a light source and a mirror, the touch detection area and the mirrored touch detection area of the touch detection area with respect to the mirror are located at each imaging device Within the field of view;
- a touch object position information acquiring module configured to acquire position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror,
- the touch object includes the actual touch object and the virtual touch object;
- the actual touch object position information acquiring module is configured to obtain, according to the image relationship between the actual touch object and the mirrored touch object of the actual touch object, and the position information of the touch detection area, from the position information of the touch object The location information of the actual touch object.
- the present invention also provides a display comprising a display unit, further comprising a touch positioning system as described above.
- the processing unit acquires location information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror, and then, the processing unit according to the actual touch object and The mirror relationship of the actual touch object of the touch object acquires the position information of the actual touch object from the position information of the touch object, thereby avoiding the occurrence of "ghost points" in the process of locating two or more touch objects, and accurately positioning the touch object position.
- FIG. 1 is a schematic structural diagram of an optical touch screen in a first embodiment of a touch positioning method according to the present invention
- FIG. 2 is a schematic flow chart of a first embodiment of a touch positioning method according to the present invention.
- FIG. 3 is a schematic flow chart of a second embodiment of a touch positioning method according to the present invention.
- FIG. 4 is a schematic diagram of a working process of an optical touch screen in a second embodiment of the touch positioning method of the present invention.
- FIG. 5 is a schematic flowchart diagram of a third embodiment of a touch positioning method according to the present invention.
- FIG. 6 is a schematic flow chart of a fourth embodiment of a touch positioning method according to the present invention.
- FIG. 7 is a schematic diagram of a working process of an optical touch screen in a fourth embodiment of the touch positioning method according to the present invention.
- FIG. 8 is a schematic flow chart of a fifth embodiment of a touch positioning method according to the present invention.
- FIG. 9 is a schematic flow chart of a sixth embodiment of a touch positioning method according to the present invention.
- FIG. 10 is a schematic diagram of a working process of an optical touch screen in a sixth embodiment of the touch positioning method according to the present invention
- FIG. 11 is a schematic flowchart of a seventh embodiment of the touch positioning method according to the present invention.
- FIG. 12 is a schematic structural view of a first embodiment of a touch positioning system according to the present invention.
- FIG. 13 is a schematic structural view of a second embodiment of a touch positioning system according to the present invention
- 14 is a schematic structural view of a third embodiment of a touch positioning system according to the present invention
- FIG. 15 is a schematic structural view of a fourth embodiment of a touch positioning system according to the present invention.
- FIG. 16 is a schematic structural diagram of a fifth embodiment of a touch positioning system according to the present invention.
- FIG. 17 is a schematic structural view of a sixth embodiment of a touch positioning system according to the present invention.
- FIG. 18 is a schematic structural diagram of a seventh embodiment of a touch positioning system according to the present invention.
- 19 is a schematic structural view of an embodiment of a display of the present invention. detailed description
- the embodiment is applied to an optical touch screen comprising a touch detection area, two imaging devices, a light source and a mirror, and the touch detection area and the touch detection area of the touch detection area are located on each imaging device. Within the field of view.
- FIG. 1 it is a schematic structural diagram of an optical touch screen according to a first embodiment of the touch positioning method of the present invention, the optical touch screen includes a touch screen frame, a touch detection area 15 , and two imaging systems.
- the device, the light source 13, the mirror 14 and the processing unit (not shown), the touch screen frame includes a first edge 111, a second edge 112, a third edge 113 and a fourth edge 114, and the inside of the touch screen frame is a touch detection area 15,
- the two imaging devices include a first imaging device 121 mounted at an intersection of the first edge 111 and the second edge 112, and a second imaging device 122 mounted at the first edge 111 and At the intersection of the four edges 114, the mirror 14 is mounted on the third edge 113, and the light source 13 is mounted on the first edge 111, the second edge 112 and the fourth edge 114.
- the fields of view of the first imaging device 121 and the second imaging device 122 cover the entire touch detection area 15 and the touch detection area 15 with respect to the mirror touch detection area of the mirror 14, and the reflection surface of the mirror 14 faces the first edge 111.
- the light source 13 includes the illuminant 131, the light guide 132, and The reflector 133 is disposed at a port of the light guide 132.
- the reflector 133 is formed at a side of the light guide 132 away from the touch detection area 15.
- the reflector 133 is separated from the light guide 132, and the illuminator 131 emits The light is incident on the light guide 132 and transmitted in the light guide 132.
- the light source 13 can also be a set of infrared emission tubes, and the light emitting surface faces the touch detection area 15.
- FIG. 2 it is a schematic flowchart of a touch positioning method according to a first embodiment of the present invention, which may include the following steps:
- Step 21 The processing unit acquires location information of the touch object.
- the processing unit acquires location information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror, where the touch object includes the actual touch object and the virtual touch object;
- the processing unit may acquire the location information of the touch object by using the following method: First, the processing unit obtains according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror.
- the information and the second direction information, and the first direction information and the second direction information of the mirrored touch object of the actual touch object are obtained by triangulation to obtain the position information of the touch object.
- the first direction information may be a first angle
- the second direction information may specifically be a second angle
- the first angle of the touch object includes a location where the touch object is located and an optical center of the first imaging device.
- the angle between the connection and the connection of the optical centers of the two imaging devices, the second angle of the touch object includes the position of the touch object and the connection of the optical center of the second imaging device with the optical centers of the two imaging devices
- the angle of the connection, the first direction information of the touch object about the mirrored touch object of the mirror includes the position of the mirrored touch object of the touch object and the connection of the optical center of the first imaging device with the optical center of the two imaging devices
- the angle between the lines, the second angle of the mirrored object of the touch object includes the angle between the position of the mirrored touch object of the touch object and the line connecting the optical center of the second imaging device and the line connecting the optical centers of the two imaging devices
- the first angle of the actual touch object is the angle between the connection between the actual touch object and the optical center of the first
- processing unit can acquire 2N first angles and 2N second angles.
- processing unit a first angle and a second angle may acquire location information according to a touch object, the processing unit may acquire the position information of a total of (2N) 2 touch object, N is equal to or greater than 1, Natural number.
- Step 22 The processing unit acquires location information of the actual touch object.
- the processing unit acquires the location information of the actual touch object from the location information of the touch object according to the mirror relationship of the actual touch object and the mirror image of the actual touch object and the position information of the touch detection area.
- step 21 the processing unit acquires according to the actual touch objects P1 and P2 collected by the first imaging device 121 and the second imaging device 122, and the image data of the mirrored touches P1, P2' of the actual touch objects P1 and P2.
- the processing unit can obtain 16 according to the first angle and the second angle of the actual touch objects P1 and P2 and the first angle and the second angle of the mirrored objects P and P2 of the actual touch objects P1 and P2.
- Position information of the touch object including position information of the actual touch objects P1 and P2 and position information of another 14 virtual touch objects, the position information of the other 14 virtual touch objects including the mirror touch of the actual touch objects P1 and P2 Location information of objects P1' and P2'.
- the processing unit may obtain the actual touch object P1 from the position information of the 16 touch objects according to the actual touch objects P1 and P2, and the mirror relationship of the mirrored touch objects ⁇ and P2' of the actual touch objects P1 and P2. Location information of P2.
- the processing unit acquires location information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror, and then, the processing unit according to the actual touch object and The mirror relationship of the actual touch object and the position information of the touch detection area, and the position information of the actual touch object is obtained from the position information of the touch object, thereby avoiding the occurrence of "ghost" in the process of locating two or more touch objects. Click " to pinpoint the location of the touch object.
- Step 31 The processing unit acquires the location information of the first touch object and the location information of the second touch object. Specifically, the location information of the touch detection area of the optical touch screen is known, and the processing unit may be based on the location information of the touch detection area. Acquiring the position information of the first touch object and the position information of the second touch object from the position information of the touch object, the first touch object includes a touch object located in the touch detection area of the optical touch screen, and the second touch object includes the touch detection area External touch object;
- Step 32 The processing unit acquires the location information of the actual touch object according to the location information of the first touch object. Specifically, for each first touch object, first, the processing unit may acquire the first location according to the location information of the first touch object. a touch object with respect to the position information of the mirror of the mirror, and then, when the first touch object is the actual touch object, the image touch of the first touch object with respect to the mirror exists in the position information of the second touch object Position information of the object, when the first touch object is a virtual touch object, the position information of the first touch object with respect to the mirror touch object of the mirror is not present in the position information of the second touch object, and therefore, the processing unit can compare The position information of the mirrored touch object of the first touch object and the position information of the second touch object, when the position information of the mirror touch object of the first touch object exists in the position information of the second touch object, the first touch The location information of the object is used as the location information of the actual touch object.
- the working process of the embodiment is briefly described by taking two actual touch objects as an example: As shown in FIG. 4, it is a working process diagram of the optical touch screen in the second embodiment of the touch positioning method of the present invention, and the structure of the optical touch screen and FIG.
- the structure of the optical touch screen is the same as the following.
- the working process of the optical touch screen is as follows: In step 21, the processing unit acquires the location information of the touch object. The specific working process of the step is the same as that of step 21 of the previous embodiment, and details are not described herein again. In step 31, the processing unit acquires the location information of the first touch object and the location information of the second touch object from the location information of the touch object.
- step 32 for each first touch object, for example: the first touch object P3, first, the processing unit may acquire the mirrored touch object of the first touch object P3 with respect to the mirror 14 according to the position information of the first touch object P3. P3, the location information, then, the processing unit can compare the location information of the mirrored touch object P3 of the first touch object P3 with the location information of the second touch object, and the first touch object P3 exists in the location information of the second touch object
- the position information of the touch object P3' is mirrored
- the first touch object P3 is the actual touch object
- the position information of the first touch object P3 can be used as the position information of the actual touch object, and the position information of the second touch object does not exist.
- the first touch object P3 mirrors the touch object P3, the first touch object P3 is a virtual touch object.
- the processing unit performs step 32 for all of the first touches, the location information of all the actual touch objects can be obtained.
- the processing unit acquires position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror, and then the processing unit receives the touch object.
- the processing unit acquires position information of the mirrored touch object of the first touch object with respect to the mirror according to the position information of the first touch object, where the first touch object exists in the position information of the second touch object.
- the position information of the first touch object is used as the position information of the actual touch object, thereby avoiding the occurrence of "ghost points" in the process of locating two or more touch objects, and accurately positioning the touch object.
- step 32 can be as follows:
- Step 51 The processing unit acquires the location information of the actual touch object according to the location information of the second touch object. Specifically, for each second touch object, the processing unit acquires the second touch object according to the location information of the second touch object. Regarding the position information of the mirrored touch object of the mirror, when the position information of the mirrored touch object of the second touch object with respect to the mirror is the actual touch object, the second touch object exists in the position information of the first touch object.
- Position information of the mirrored touch object of the mirror when the position information of the mirrored touch object of the second touch object with respect to the mirror is not the actual touch object, the second touch object is not reflected in the position information of the first touch object
- the position information of the mirrored object of the mirror so that the processing unit can compare the position information of the mirrored touch object of the second touch object with the position information of the first touch object, and the first position information of the first touch object exists.
- the position information of the touch object is mirrored by the touch object
- the position information of the mirror touch object of the second touch object is used as the real The position information of the touch object.
- step 51 of this embodiment is similar to the working process of step 32 of the previous embodiment, except that step 32 of the previous embodiment is obtained according to the mirrored touch object of the actual touch object in the second touch object.
- the actual touch object, step 51 of the embodiment acquires the actual touch object according to the mirror touch object of the mirror touch object of the actual touch object in the first touch object.
- the processing unit acquires position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror, and then the processing unit receives the touch object.
- the processing unit acquires the second touch object about the mirror according to the location information of the second touch object.
- the position information of the mirrored touch object, and the position information of the mirrored touch object of the second touch object is compared with the position information of the first touch object, and the mirror image of the second touch object exists in the position information of the first touch object
- the position information of the mirrored touch object of the second touch object is used as the position information of the actual touch object, thereby avoiding the occurrence of "ghost points" in the process of locating two or more touch objects, and accurately positioning the touch.
- the location of the object Touch positioning method fourth embodiment
- step 22 may include the following steps:
- Step 61 The processing unit acquires location information of the first touch object.
- the processing unit may acquire the location information of the first touch object from the location information of the touch object according to the location information of the touch detection area, where the first touch object includes a touch object in the touch detection area of the optical touch screen;
- Step 62 The processing unit acquires location information of the actual touch object according to the location information of the first touch object and the location information of the touch object.
- the processing unit performs the following processing: the processing unit acquires, according to the location information of the first touch object, location information of the mirrored touch object of the first touch object with respect to the mirror, according to the first And acquiring, by the location information of the mirrored object of the touch object, the first direction information and the second direction information of the mirrored touch object of the first touch object, where the first direction information of the mirrored touch object of the first touch object includes the first touch
- the position of the mirrored object of the object is relative to the direction of the optical center of the first imaging device
- the second direction information of the mirrored touch object of the first touch object includes the position of the mirrored touch object of the first touch object relative to the second imaging
- the second direction information and the first direction information of the mirrored touch object of the first touch object acquire position information of the fourth touch object, and the first touch
- the first touch object is a virtual touch object. After the processing unit performs the above processing on all the first touch objects, position information of all the actual touch objects can be obtained.
- the first direction information may be a first angle
- the second direction information may be a second angle.
- the first angle of the first touch object is the location of the first touch object and the first The angle between the connection of the optical center of the imaging device and the line connecting the optical centers of the two imaging devices, and the second angle of the first touch object is the connection between the position of the first touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the light of the first imaging device
- the angle between the connection of the heart and the line connecting the optical centers of the two imaging devices, the second angle of the mirrored touch of the first touch object is the position of the mirrored touch object of the first touch object and the position of the second imaging device
- FIG. 7 it is a schematic diagram of the working process of the optical touch screen in the fourth embodiment of the touch positioning method of the present invention.
- the structure of the optical touch screen is the same as that shown in FIG. 1 .
- the working process of this embodiment is as follows: The processing unit obtains the location information of the touch object, and the specific working process of the step is the same as the step 21 of the first embodiment of the touch positioning method, and details are not described herein again.
- step 61 the processing unit acquires the location information of the first touch object from the location information of the touch object.
- step 62 for each first touch object, for example: the first touch object P3, the processing unit acquires the mirrored touch object P3' of the first touch object P3 with respect to the mirror 14 according to the position information of the first touch object P3.
- Position information according to position information of the mirrored touch object P3 of the first touch object P3, acquiring a first angle and a second angle of the mirrored touch object P3' of the first touch object P3, according to the first touch object P3
- the location information is compared with the location information of the touch object, and the location information of the mirrored touch object of the first
- the processing unit acquires position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror, and then the processing unit receives the touch object.
- the processing unit acquires location information of the mirrored touch object of the first touch object about the mirror according to the location information of the first touch object, Obtaining, according to the location information of the mirrored touch object of the first touch object, first direction information and second direction information of the mirrored touch object of the first touch object, according to the first direction information of the first touch object and the second Direction information, and first direction information and second direction information of the mirrored touch object of the first touch object, acquiring position information of the third touch object and the fourth touch object, where the first touch exists in the position information of the touch object The first touch when the position information of the object mirror image, the position information of the third touch object, and the position information of the fourth touch object Position information as the
- step 22 may include the following steps:
- Step 81 The processing unit acquires location information of the second touch object.
- the processing unit may acquire the location information of the second touch object from the location information of the touch object according to the location information of the touch detection area, where the second touch object includes a touch object outside the touch detection area of the optical touch screen;
- Step 82 The processing unit acquires location information of the actual touch object according to the location information of the second touch object and the location information of the touch object.
- the processing unit performs the following processing: the processing unit acquires, according to the location information of the second touch object, location information of the mirrored touch object of the second touch object with respect to the mirror, according to the second And acquiring, by the location information of the mirrored object of the touch object, the first direction information and the second direction information of the mirrored touch object of the second touch object, where the first direction information of the mirrored touch object of the second touch object includes the second touch a direction in which the mirrored object of the object is located in a line with the optical center of the first imaging device and a line connecting the optical centers of the two imaging devices, and the second direction information of the mirrored touch object of the second touch object includes the second a direction of a line connecting the mirrored object of the touch object and a line connecting the optical center of the second imaging device to the optical center of the two imaging devices, according to the first direction information of the second touch object and the second touch object
- the second direction information of the mirrored object obtaining position information of the fifth touch object, according to the
- the first direction information may be a first angle
- the second direction information may be a second angle
- the first angle of the second touch object is the location of the second touch object and the first The angle between the connection of the optical center of the imaging device and the connection of the optical centers of the two imaging devices
- the second angle of the second touch object is the connection between the position of the second touch object and the optical center of the second imaging device
- the first angle of the mirrored touch object is the angle between the position of the mirrored touch object of the second touch object and the connection between the optical center of the first imaging device and the optical center of the two imaging devices
- the second touch The second angle of the mirrored object of the object is the angle between the location of the mirrored touch object of the second touch object and the line connecting the optical center of the second imaging device and the optical center of the two imaging devices.
- the method of this embodiment is similar to the previous embodiment, except that the second touch object located outside the touch detection area is used in the embodiment, and the first touch object located in the touch detection area is used in the previous embodiment. .
- the processing unit acquires position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror, and then the processing unit receives the touch object.
- the processing unit acquires location information of the second touch object in the location information
- the processing unit acquires location information of the mirrored touch object of the second touch object with respect to the mirror according to the location information of the second touch object, Obtaining, according to the location information of the mirrored touch object of the second touch object, the first direction information and the second direction information of the mirrored touch object of the second touch object, and according to the first direction information of the second touch object and the second Direction information, and first direction information and second direction information of the mirrored touch object of the second touch object, acquiring position information of the fifth touch object and the sixth touch object, where the second touch exists in the position information of the touch object When the position information of the object of the object is mirrored, the position information of the fifth touch object, and the position information of the sixth touch object
- step 22 may include the following steps:
- Step 91 The processing unit acquires location information of the first touch object.
- the processing unit acquires location information of the first touch object from the location information of the touch object according to the location information of the touch detection area, where the first touch object includes a touch object located in the touch detection area of the optical touch screen;
- Step 92 The processing unit acquires all the first touch object groups from the first touch object;
- each first touch object group includes a first touch object of the actual number of touch objects, assuming that the number of the first touch objects is M, M is a natural number greater than or equal to 2, and the number of actual touch objects is N, N is a natural number greater than or equal to 2, and N is less than or equal to M, and the number of the first touch object group is fl.
- Step 93 The processing unit acquires an error of all the first touch object groups
- the processing unit acquires position information of the mirrored touch object of the first touch object with respect to the mirror according to the position information of the first touch object in the first touch object group, according to the first Touch object
- the position information of the mirrored touch object acquires the first direction information and the second direction information of the mirrored touch object of the first touch object
- the first direction information of the mirrored touch object of the first touch object includes the mirrored touch object of the first touch object
- the second direction information of the mirrored touch object of the first touch object includes the direction of the position of the mirrored touch object of the first touch object relative to the optical center of the second imaging device, with respect to the direction of the optical center of the first imaging device.
- the position information of the touch object and the position information of the touch object acquire the sum of the squares of the distances between the first suspected touch object and the touch object, and the sum of the squares of the distances is used as the error of the first touch object group, wherein the first touch object is the first The direction information and the first direction information of the mirrored touch object of the first touch object and the first direction information of the actual touch object and the mirror touch of the actual touch object
- the first direction information is in one-to-one correspondence according to the size order
- the second direction information of the touch object is sequentially arranged in a size order, so that the position information of each first suspected touch object
- Step 94 The processing unit acquires location information of the actual touch object according to the error of all the first touch object groups; specifically, the processing unit compares the errors of all the first touch object groups, and minimizes the error (ie, the minimum mean square error).
- the position information of the first touch object in a touch object group is used as the position information of the actual touch object.
- the first direction information may be a first angle
- the second direction information may be a second angle.
- the first angle of the first touch object is the location of the first touch object and the first The angle between the connection of the optical center of the imaging device and the line connecting the optical centers of the two imaging devices
- the second angle of the first touch object is the connection between the position of the first touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the optical center of the first imaging device
- the angle between the connection and the connection of the optical centers of the two imaging devices, the second angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the light center of the second imaging device
- the optical touch screen has the same structure as the optical touch screen shown in FIG. 1.
- the working process of the optical touch screen is as follows: In step 21, The processing unit obtains the location information of the touch object, and the specific working process of the step is the same as the step 21 of the first embodiment of the touch positioning method, and details are not described herein again. In step 91, the processing unit acquires location information of the first touch object.
- step 92 at The processing unit acquires all the first touch object groups, and in step 93, for the first touch object in each first touch object group, for example: first touch objects P3 and P4, wherein the first touch objects P3 and P4 The first angle and the second angle have been obtained in step 21, and the processing unit acquires position information of the actual touches P3 and P4 with respect to the mirrored touches P3' and P4' of the mirror 14, according to the first touch object P3 and The positional information of the mirrored touch objects P3' and P4' of P4, the first angle and the second angle of the mirrored touch object P3 of the first touch object P3, and the mirrored touch object P4' of the first touch object P4 The first angle and the second angle are further according to the first angle and the second angle of the first touch objects P3 and P4, and the mirrored touches P3, and P4 of the first touch objects P3 and P4, An angle between the angle and the second angle, obtaining position information of the first suspected touch object, and obtaining a square sum of distances between the first
- first angle of the first touch objects P3 and P4 and the first angle of the mirrored touch objects P3, and P4' of the first touch objects P3 and P4 and the first angle and actual of the actual touch objects P1 and P2 The first angles of the mirrored objects ⁇ and P2 of the touch objects P1 and P2 are in order of magnitude - correspondingly, the second angle of the first touch objects P3 and P4 and the mirrored touch object P3 of the first touch objects P3 and P4
- the second angle between 'and P4' and the second angle of the actual touch objects P1 and P2 and the second angle of the mirrored touch objects P and P2 of the actual touch objects P1 and P2 are in order of magnitude - corresponding to each
- the position information of the first suspected touch object and the position information of each touch object correspond to the corresponding relationship between the first angle and the second angle according to the position information of each first suspected touch object and the position information of each touch object. stand up.
- the processing unit compares the errors of all the first touch object groups, and
- the processing unit acquires location information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror, and the processing unit is from the position information of the touch object.
- Obtaining location information of the first touch object acquiring all first touch object groups from the first touch object, and then the processing unit acquires errors of all the first touch object groups, and finally the processing unit compares errors of all the first touch object groups,
- the position information of the first touch object in the first touch object group with the smallest error is used as the position information of the actual touch object, thereby avoiding the occurrence of "ghost points" in the process of locating two or more touch objects, and accurately positioning the touch object position.
- step 22 may include the following steps:
- Step 111 The processing unit acquires location information of the second touch object.
- the processing unit acquires location information of the second touch object from the location information of the touch object according to the location information of the touch detection area, where the second touch object includes a touch object located outside the touch detection area;
- Step 112 The processing unit acquires all the second touch object groups from the second touch object;
- each second touch object group includes a second touch object of the actual number of touch objects
- Step 113 The processing unit acquires an error of all the second touch object groups
- the processing unit acquires location information of the second touch object about the mirrored touch object of the mirror according to the location information of the second touch object in the second touch object group, according to the second And acquiring, by the location information of the mirrored object of the touch object, the first direction information and the second direction information of the mirrored touch object of the second touch object, where the first direction information of the mirrored touch object of the second touch object includes a mirror image of the second touch object
- the second direction information of the mirrored touch object of the second touch object includes the position of the mirrored touch object of the second touch object relative to the optical center of the second image forming device.
- the position information of the suspected touch object and the position information of the touch object, and the sum of the squares of the distance between the second suspected touch object and the touch object, and the distance The squared sum is the error of the second touch object group; wherein the first direction information of the second touch object and the first direction information of the mirrored touch object of the second touch object and the first direction information of the actual touch object and the actual touch object.
- the first direction information of the mirrored touch object is in one-to-one correspondence according to the size order, the second direction information of the second touch object and the second direction information of the mirrored touch object of the second touch object and the second direction information and actual of the actual touch object
- the second direction information of the mirrored touch object of the touch object is sequentially arranged in order of magnitude, so that the position information of each second suspected touch object and the
- Step 114 The processing unit acquires position information of the actual touch object according to the error of all the second touch object groups. Specifically, the processing unit compares the errors of all the second touch object groups, and minimizes the error (ie, the minimum mean square error).
- the position information of the mirrored touch object of the second touch object in the two touch object group is used as the position information of the actual touch object.
- the method of this embodiment is similar to the method of the previous embodiment, except that the second touch object located outside the touch detection area is used in the embodiment, and the first touch is used in the touch detection area in the previous embodiment. Things.
- the first direction information may be a first angle
- the second direction information may be a second angle
- the first angle of the second touch object is the location of the second touch object and the first
- the second angle of the second touch object is the connection between the position of the second touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the second touch object is the position of the mirrored touch object of the second touch object and the optical center of the first imaging device
- the angle between the connection and the line connecting the optical centers of the two imaging devices, and the second angle of the mirrored touch of the second touch object An angle between a line connecting the mirrored object of the second touch object and a line connecting the optical centers of the second imaging device and the optical centers of the two imaging devices.
- the processing unit acquires location information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror, and the processing unit is from the position information of the touch object.
- FIG. 12 it is a schematic structural diagram of a touch positioning system according to a first embodiment of the present invention, which may include an optical touch screen 1201, a touch object position information acquiring module 1202, and an actual touch object position information acquiring module 1203.
- the touch object position information acquisition module 1202 is connected to the optical touch screen 1201, and the actual touch object position information acquisition module 1203 is connected to the touch object position information acquisition module 1202.
- the optical touch screen 1201 includes a touch detection area, two imaging devices, a light source and a mirror, and the touch detection area and the touch detection area of the touch detection area with respect to the mirror are located in the field of view of each imaging device.
- the optical touch screen 1201 can also include a touch screen frame.
- the specific structure can be seen in FIG. 1 , and details are not described herein.
- the touch object position information acquisition module 1202 is configured to obtain position information of the touch object according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirror touch object of the mirror, the touch object includes the actual touch object and the virtual touch object. Touch the object.
- the actual touch object position information acquisition module 1203 is configured to obtain the position information of the actual touch object from the position information of the touch object according to the mirror relationship of the actual touch object and the mirror image of the actual touch object and the position information of the touch detection area.
- the touch object position information acquiring module 1202 may include a direction acquiring unit 1221 and a touch object position information acquiring unit 1222.
- the direction acquiring unit 1221 is connected to the two imaging devices of the optical touch screen 1201, and the touch object position information acquiring unit 1222 is connected to the actual touch object position information acquiring module 1203 and the direction acquiring unit 1221.
- the direction obtaining unit 1221 is configured to acquire first direction information and second direction information of the actual touch object, and actual touch according to the actual touch object collected by the two imaging devices and the image data of the actual touch object with respect to the mirrored touch object of the mirror.
- the first direction information and the second direction information of the object of the object, wherein the actual touch object The first direction information includes a direction in which the actual touch object is located relative to the optical center of the first imaging device, and the second direction information of the actual touch object includes a direction in which the actual touch object is located relative to the optical center of the second imaging device, the actual touch
- the first direction information of the mirrored object of the object includes the direction of the position of the mirrored touch object of the actual touch object relative to the optical center of the first imaging device, and the second direction information of the mirrored touch object of the actual touch object includes the image of the actual touch object.
- the touch object position information acquiring unit 1222 is configured to acquire the position information of the touch object according to the first direction information and the second direction information of the actual touch object, and the first direction information and the second direction information of the mirrored touch object of the actual touch object. Specifically, the touch object position information acquiring unit 1222 can acquire the position information of the touch object by using the triangulation method.
- the two imaging devices include a first imaging device and a second imaging device.
- the first direction information may specifically be a first angle
- the second direction information may specifically be a second angle, the first of the touch object.
- the included angle includes an angle between a line where the touch object is located and an optical center of the first imaging device and a line connecting the optical centers of the two imaging devices
- the second angle of the touch object includes the position of the touch object and the second imaging device
- the angle between the connection of the optical center and the connection of the optical centers of the two imaging devices, the first direction information of the mirrored touch object of the touch object with respect to the mirror includes the location of the mirrored touch object of the touch object and the position of the first imaging device
- the angle between the connection of the optical center and the connection of the optical centers of the two imaging devices, and the second angle of the mirrored touch object of the touch object includes the position of the mirrored touch object of the touch object and the optical center of the second imaging device
- the first angle of the actual touch object is the connection between the actual touch object position and the optical center of the first imaging device and the light of the two imaging devices.
- Heart The angle between the lines, the second angle of the actual touch object is the angle between the actual touch object position and the connection between the optical center of the second imaging device and the optical center of the two imaging devices, and the actual touch object is mirrored.
- the first angle of the touch object is the angle between the position of the mirrored touch object of the actual touch object and the connection between the optical center of the first imaging device and the optical center of the two imaging devices, and the mirrored touch object of the actual touch object
- the second angle is the angle between the position of the actual touch object and the connection between the optical center of the second imaging device and the optical center of the two imaging devices.
- the touch object position information acquiring module 1202 acquires the position information of the touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror. Then, the actual touch object position information acquiring module 1203 acquires the position information of the actual touch object from the position information of the touch object according to the mirror relationship of the actual touch object and the mirrored touch object of the actual touch object, thereby avoiding positioning two or more touches.
- the "ghost point" appears in the process of the object, precisely positioning the location of the touch object.
- the actual touch object location information acquiring module 1203 may include touch object location information classification.
- the touch object position information classification unit 1231 is connected to the touch object position information acquisition unit 1222, and the first actual touch object position information acquisition unit 1232 is connected to the touch object position information classification unit 1231.
- the touch object location information classification unit 1231 is configured to acquire location information of the first touch object and location information of the second touch object from the location information of the touch object according to the location information of the touch detection area, where the first touch object is located in the optical
- the touch object in the touch detection area of the touch screen includes a touch object located outside the touch detection area.
- the first actual touch object position information acquiring unit 1232 is configured to acquire, according to the position information of the first touch object, position information of the mirrored touch object of the first touch object with respect to the mirror for each first touch object, and compare the first Position information of the touch object of the touch object and position information of the second touch object, when the position information of the mirror touch object of the first touch object exists in the position information of the second touch object, the first touch object
- the location information is used as the location information of the actual touch object.
- the touch object position information acquiring module 1202 acquires the position information of the touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror. Then, the touch object position information classification unit 1231 acquires the position information of the first touch object and the position information of the second touch object from the position information of the touch object, and for each first touch object, the first actual touch object position information acquiring unit The position information of the mirrored touch object of the first touch object with respect to the mirror is obtained according to the position information of the first touch object, and the position information of the mirror touch object of the first touch object exists in the position information of the second touch object.
- the position information of the first touch object is used as the position information of the actual touch object
- the first actual touch object position information acquiring unit 1232 processes all the first touch objects
- the position information of all the actual touch objects can be obtained. , thus avoiding the appearance of "ghost points" in the process of locating more than two touch objects.
- Position location of the touch object is located.
- FIG. 14 is a schematic structural diagram of a touch positioning system according to a third embodiment of the present invention, which is different from the structural schematic diagram shown in FIG. 11 in that the actual touch object position information acquiring module 1203 may include a touch object position information classification unit 1231. And the second actual touch object position information acquiring unit 1233.
- the touch object position information classification unit 1231 is connected to the touch object position information acquiring unit 1222, and the second actual touch object position information acquiring unit 1233 is connected to the touch object position information sorting unit 1231.
- the touch object position information classification unit 1231 is configured to acquire position information of the first touch object and position information of the second touch object from the position information of the touch object according to the position information of the touch detection area, where the first touch object includes A touch object located in a touch detection area of the optical touch screen, the second touch object including a touch object located outside the touch detection area.
- the second actual touch object position information acquiring unit 1233 is configured to acquire, for each second touch object, location information of the mirrored touch object of the second touch object with respect to the mirror according to the position information of the second touch object, The position information of the mirrored touch object of the second touch object is compared with the position information of the first touch object, and when the position information of the mirror touch object of the second touch object exists in the position information of the first touch object, the second touch is The position information of the mirrored object of the object is used as the position information of the actual touch object.
- the working process of this embodiment is similar to the working process of the previous embodiment. The difference is that the previous embodiment obtains the actual touch object according to the mirrored touch object of the actual touch object in the second touch object. A mirrored touch of the mirrored touch of the actual touch object exists in a touch object to acquire the actual touch object.
- the touch object position information acquiring module 1202 acquires the position information of the touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror. Then, the touch object position information classification unit 1231 acquires the position information of the first touch object and the position information of the second touch object from the position information of the touch object, and for each second touch object, the second actual touch object position information acquiring unit The position information of the mirrored touch object of the second touch object with respect to the mirror is obtained according to the position information of the second touch object, and the position information of the mirror touch object of the second touch object exists in the position information of the first touch object.
- the second actual touch object position information acquiring unit 1233 processes all the second touch objects, all the actual touches can be obtained. Position information of the object, thereby avoiding the appearance of two or more touch objects "Ghost point", which precisely locates the touch object.
- FIG. 15 it is a schematic structural diagram of a fourth embodiment of the touch positioning system of the present invention, which is different from the structural schematic diagram shown in FIG. 12 in that the actual touch object position information acquiring module 1203 may include the first touch object position information acquisition.
- the first touch object position information acquiring unit 1234 is connected to the touch object position information acquiring unit 1222, and the third actual touch object position information acquiring unit 1235 and the direction acquiring unit 1221, the touch object position information acquiring unit 1222, and the first touch object position information are acquired.
- Unit 1234 is connected.
- the first touch object position information acquiring unit 1234 is configured to acquire position information of the first touch object from the position information of the touch object according to the position information of the touch detection area, where the first touch object includes a touch located in the touch detection area of the optical touch screen. Things.
- the third actual touch object position information acquiring unit 1235 is configured to acquire, for each first touch object, position information of the mirrored touch object of the first touch object with respect to the mirror according to the position information of the first touch object, Obtaining, according to the location information of the mirrored touch object of the first touch object, first direction information and second direction information of the mirrored touch object of the first touch object, where the first direction information of the mirrored touch object of the first touch object includes The position of the mirrored touch object of the first touch object is relative to the direction of the optical center of the first imaging device, and the second direction information of the mirrored touch object of the first touch object includes the position of the mirrored touch object of the first touch object.
- the position information of the third touch object is obtained according to the direction of the optical center of the second imaging device, according to the first Obtaining, by the second direction information of the touch object and the first direction information of the mirrored touch object of the first touch object, location information of the fourth touch object, location information of the mirrored touch object of the first touch object, and a third touch
- the position information of the object and the position information of the fourth touch object are compared with the position information of the touch object, and the mirror touch of the first touch object exists in the position information of the touch object
- the position information of the first touch object is used as the position information of the actual touch object.
- the first direction information may be a first angle
- the second direction information may be a second angle.
- the first angle of the first touch object is the location of the first touch object and the first The angle between the connection of the optical center of the imaging device and the line connecting the optical centers of the two imaging devices
- the second angle of the first touch object is the connection between the position of the first touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the optical center of the first imaging device
- the angle between the connection and the connection of the optical centers of the two imaging devices, the second angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the light center of the second imaging device
- the touch object position information acquiring module 1202 acquires the position information of the touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror.
- the first touch object position information acquiring unit 1234 acquires the position information of the first touch object from the position information of the touch object.
- the third actual touch object position information acquiring unit 1235 first acquires the first touch object.
- the location information of the touch object has the location information of the first touch object, the location information of the third touch object, and the location information of the fourth touch object
- the location information of the first touch object is actually used.
- FIG. 16 is a schematic structural diagram of a fifth embodiment of the touch positioning system of the present invention, which is different from the structural diagram shown in FIG. 12 in that, in this embodiment, the actual touch object position information acquiring module 1203 may include the first The second touch object position information acquiring unit 1236 and the fourth actual touch object position information acquiring unit 1237.
- the second touch object position information acquiring unit 1236 is connected to the touch object position information acquiring unit 1222, and the fourth actual touch object position information acquiring unit 1237 and the direction acquiring unit 1221, the touch object position information acquiring unit 1222, and the second touch object position information are acquired.
- Unit 1236 is connected.
- the second touch object position information acquiring unit 1236 is configured to acquire the position information of the second touch object from the position information of the touch object according to the position information of the touch detection area, and the second touch object includes the touch object located outside the touch detection area.
- the fourth actual touch object position information acquiring unit 1237 is configured to acquire, according to the position information of the second touch object, position information of the mirrored touch object of the second touch object with respect to the mirror for each second touch object, according to the first The first direction information and the second direction information of the mirrored touch object of the second touch object are obtained by the location information of the mirrored touch object of the second touch object, and the first direction information of the mirrored touch object of the second touch object includes the second The direction of the mirrored object of the touch object is relative to the direction of the optical center of the first imaging device, and the second direction information of the mirrored touch object of the second touch object includes the position of the mirrored touch object of the second touch object relative to the second a direction of the optical center of the imaging device, according to the first direction information of the second
- the position information of the mirrored touch object of the second touch object is used as the position information of the actual touch object.
- the working process of this embodiment is similar to that of the previous embodiment, except that the second touch object located outside the touch detection area is used in the embodiment, and the first touch is used in the touch detection area in the previous embodiment. Things.
- the first direction information may be a first angle
- the second direction information may be a second angle
- the first angle of the second touch object is the location of the second touch object and the first
- the second angle of the second touch object is the connection between the position of the second touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the second touch object is the position of the mirrored touch object of the second touch object and the light of the first imaging device
- the angle between the connection of the heart and the line connecting the optical centers of the two imaging devices, the second angle of the mirrored touch of the second touch object is the position of the mirrored touch object of the second touch object and the position of the second imaging device
- the direction acquiring unit 1221 acquires the first direction information of the actual touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror.
- the second direction information, and the first direction information and the second direction information of the mirrored touch object of the actual touch object, the touch object position information acquiring unit 1222, according to the first direction information and the second direction information of the actual touch object, and the actual touch object The first direction information and the second direction information of the mirrored object are obtained, and the location information of the touch object is obtained.
- the second touch object location information acquiring unit 1236 acquires the location information of the second touch object from the location information of the touch object.
- Each second touch object, the fourth actual touch object position information acquiring unit 1237 acquires position information of the mirrored touch object of the second touch object with respect to the mirror according to the position information of the second touch object, according to the second touch object Position information of the mirrored touch object, obtaining a mirrored touch object of the second touch object a direction information and a second direction information, and then acquiring the location information of the fifth touch object and the location information of the sixth touch object, and the location information of the mirrored touch object of the second touch object exists in the location information of the touch object, the fifth When the position information of the touch object and the position information of the sixth touch object are used, the position information of the mirrored touch object of the second touch object is used as the position information of the actual touch object, and the fourth actual touch object position information acquiring unit 1237 After the two touch objects are processed, the position information of all the actual touch objects can be obtained, thereby avoiding the occurrence of "ghost points" in the process of locating two or more touch objects, and accurately positioning the touch object.
- the actual touch object location information acquiring module 1203 may include a first touch object group acquiring unit 1238, The first touch object group error acquiring unit 1239 and the fifth actual touch object position information acquiring unit 12310.
- the first touch object group acquisition unit 1238 is connected to the touch object position information acquisition unit 1222
- the first touch object group error acquisition unit 1239 is connected to the first touch object group acquisition unit 1238, the direction acquisition unit 1221, and the touch object position information acquisition unit 1222.
- the fifth actual touch object position information acquiring unit 12310 is connected to the first touch object group error acquiring unit 1239.
- the first touch object group obtaining unit 1238 is configured to acquire position information of the first touch object from the position information of the touch object according to the position information of the touch detection area, where the first touch object includes a touch object located in the touch detection area of the optical touch screen. And acquiring, by the first touch object, the first touch object group, each first touch object group including the first touch object of the actual touch object number.
- the first touch object group error acquiring unit 1239 is configured to use, for each first touch object group, according to the Position information of the first touch object in the first touch object group, acquiring position information of the first touch object with respect to the mirror touch object of the mirror, and acquiring the first touch object according to the position information of the mirror touch object of the first touch object Mirroring the first direction information and the second direction information of the touch object, the first direction information of the mirrored touch object of the first touch object includes a direction of a position of the mirrored touch object of the first touch object relative to an optical center of the first imaging device, The second direction information of the mirrored touch object of the first touch object includes a direction of the position of the mirrored touch object of the first touch object relative to the optical center of the second imaging device, according to the first direction information and the second direction of the first touch object The information, and the first direction information and the second direction information of the mirrored touch object of the first touch object acquire position information of the first suspected touch object, and obtain the first information according to the position information of the first suspected touch object and the
- the first direction information may be a first angle
- the second direction information may be a second angle
- the first angle of the first touch object is the location of the first touch object and the first The angle between the connection of the optical center of the imaging device and the line connecting the optical centers of the two imaging devices
- the second angle of the first touch object is the connection between the position of the first touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the optical center of the first imaging device
- the angle between the connection and the connection of the optical centers of the two imaging devices, the second angle of the mirrored touch object of the first touch object is the position of the mirrored touch object of the first touch object and the light center of the second imaging device
- the direction acquiring unit 1221 acquires the first direction information of the actual touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror.
- the second direction information, and the first direction information and the second direction information of the mirrored touch object of the actual touch object, the touch object position information acquiring unit 1222, according to the first direction information and the second direction information of the actual touch object, and the actual touch object The first direction information and the second direction information of the mirrored object are obtained, and the position information of the touch object is obtained.
- the first touch object group acquiring unit 1238 acquires the position information of the first touch object from the position information of the touch object, and then Acquiring a first touch object group in the first touch object, the first touch object group error acquiring unit 1239 acquires an error of each first touch object group, and the fifth actual touch object position information acquiring unit 12310 first touches the first touch object with the smallest error
- the position information of the first touch object in the group is used as the position information of the actual touch object, thereby avoiding "Ghost" positioning of the two or more touch objects occurs during pinpoint the location of the touch object.
- Touch positioning system seventh embodiment As shown in FIG. 18, it is a schematic structural diagram of a seventh embodiment of the touch positioning system of the present invention.
- the actual touch object location information acquiring module 1203 may include a second touch object group obtaining unit 12311, The second touch object group error acquiring unit 12312 and the sixth actual touch object position information acquiring unit 12313.
- the second touch object group obtaining unit 12311 is connected to the touch object position information acquiring unit 1222
- the second touch object group error acquiring unit 12312 is connected to the second touch object group acquiring unit 12311, the direction acquiring unit 1221, and the touch object position information acquiring unit 1222.
- the sixth actual touch object position information acquiring unit 12313 is connected to the second touch object group error acquiring unit 12312.
- the second touch object group obtaining unit 12311 is configured to acquire position information of the second touch object from the position information of the touch object according to the position information of the touch detection area, where the second touch object includes the touch object outside the touch detection area. All second touch object groups are acquired from the second touch object, and each second touch object group includes a second touch object of the actual number of touch objects.
- the second touch object group error acquiring unit 12312 is configured to acquire, for each second touch object group, the mirrored touch object of the second touch object with respect to the mirror according to the position information of the second touch object in the second touch object group.
- Position information acquiring first direction information and second direction information of the mirrored touch object of the second touch object according to the position information of the mirrored touch object of the second touch object, where the first direction information of the mirrored touch object of the second touch object includes The position of the mirrored touch object of the second touch object is relative to the direction of the optical center of the first imaging device, and the second direction information of the mirrored touch object of the second touch object includes the position of the mirrored touch object of the second touch object relative to the second a direction of the optical center of the imaging device, acquiring the second suspected touch object according to the first direction information and the second direction information of the second touch object, and the first direction information and the second direction information of the mirrored touch object of the second touch object
- the location information according to the location information of the second suspected touch object and the location information of the touch object, obtaining the distance between the second suspected touch object and the touch object
- the sum of the squares, the sum of the squares of the distances is used as the error of the second set of touch objects.
- the first direction information may be a first angle
- the second direction information may be a second angle
- the first angle of the second touch object is the location of the second touch object and the first
- the second angle of the second touch object is the connection between the position of the second touch object and the optical center of the second imaging device
- the angle between the line and the line connecting the optical centers of the two imaging devices, the first angle of the mirrored touch object of the second touch object is the position of the mirrored touch object of the second touch object and the optical center of the first imaging device
- the angle between the connection and the connection of the optical centers of the two imaging devices, the second angle of the mirrored touch of the second touch object is the position of the mirrored touch object of the second touch object and the optical center of the second imaging device
- the direction acquiring unit 1221 acquires the first direction information of the actual touch object according to the actual touch object collected by the two imaging devices of the optical touch screen 1201 and the image data of the actual touch object with respect to the mirror touch object of the mirror.
- the second direction information, and the first direction information and the second direction information of the mirrored touch object of the actual touch object, the touch object position information acquiring unit 1222, according to the first direction information and the second direction information of the actual touch object, and the actual touch object The first direction information and the second direction information of the mirrored object are obtained, and the position information of the touch object is obtained.
- the second touch object group acquiring unit 12311 obtains the position information of the second touch object from the position information of the touch object, and then All second touch object groups are acquired in the second touch object, the second touch object group error acquiring unit 12312 acquires an error of each second touch object group, and the sixth actual touch object position information acquiring unit 12313 detects the second touch with the smallest error.
- the position information of the mirrored touch object of the second touch object in the object group is used as the position information of the actual touch object, To avoid the appearance of "ghost" in the positioning of the two or more touch objects in the process, the precise positioning of the touch object location.
- FIG. 19 it is a schematic structural diagram of an embodiment of a display of the present invention, which may include a display unit and a touch positioning system 193.
- the display unit comprises a display screen 191 and a display frame 192 which is installed in front of the display screen 191, on the side close to the user, and inside the display frame 192.
- the touch positioning system 193 can also be mounted external to the display frame 192, and the touch positioning system 193 can also be integrated with the display frame 192.
- the touch location system 193 can include any of the foregoing touch location system embodiments, and is not described herein.
- the imaging device may be an image capturing device such as a camera or a camera.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Image Analysis (AREA)
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/641,433 US20130027357A1 (en) | 2010-04-16 | 2011-04-15 | Touch locating method and system, display |
KR1020127030013A KR20130052567A (ko) | 2010-04-16 | 2011-04-15 | 터치 로케이팅 방법과 시스템 및 디스플레이 |
JP2013504109A JP2013525884A (ja) | 2010-04-16 | 2011-04-15 | 接触位置特定方法並びにシステム及びディスプレイ |
Applications Claiming Priority (2)
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CN201010152319.8 | 2010-04-16 | ||
CN2010101523198A CN102221938A (zh) | 2010-04-16 | 2010-04-16 | 触摸定位方法和系统、以及显示器 |
Publications (1)
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WO2011127836A1 true WO2011127836A1 (zh) | 2011-10-20 |
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PCT/CN2011/072848 WO2011127836A1 (zh) | 2010-04-16 | 2011-04-15 | 触摸定位方法和系统、以及显示器 |
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JP (1) | JP2013525884A (zh) |
KR (1) | KR20130052567A (zh) |
CN (1) | CN102221938A (zh) |
WO (1) | WO2011127836A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107515700A (zh) * | 2017-09-05 | 2017-12-26 | 电子科技大学中山学院 | 一种用于智能镜子的非接触式触屏效果模拟方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015152873A1 (en) * | 2014-03-31 | 2015-10-08 | Hewlett-Packard Development Company, L.P. | Interaction with surface acoustic wave touchscreens |
TWI574196B (zh) * | 2016-01-21 | 2017-03-11 | 緯創資通股份有限公司 | 光學觸控裝置、觸控指示點位置決定方法以及光學觸控系統 |
Citations (5)
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---|---|---|---|---|
WO2002007072A2 (en) * | 2000-07-19 | 2002-01-24 | Next Holdings Limited | Touch panel display system |
CN1577386A (zh) * | 2003-06-30 | 2005-02-09 | 索尼株式会社 | 位置检测装置 |
CN101566897A (zh) * | 2009-06-03 | 2009-10-28 | 广东威创视讯科技股份有限公司 | 触摸屏定位装置及触摸屏定位方法 |
CN201429831Y (zh) * | 2009-04-29 | 2010-03-24 | 北京汇冠新技术股份有限公司 | 一种带摄像头触摸屏 |
CN101907956A (zh) * | 2010-08-13 | 2010-12-08 | 苏州佳世达电通有限公司 | 判断光学触控屏幕被触控位置的方法 |
-
2010
- 2010-04-16 CN CN2010101523198A patent/CN102221938A/zh active Pending
-
2011
- 2011-04-15 KR KR1020127030013A patent/KR20130052567A/ko not_active Application Discontinuation
- 2011-04-15 JP JP2013504109A patent/JP2013525884A/ja not_active Withdrawn
- 2011-04-15 WO PCT/CN2011/072848 patent/WO2011127836A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002007072A2 (en) * | 2000-07-19 | 2002-01-24 | Next Holdings Limited | Touch panel display system |
CN1577386A (zh) * | 2003-06-30 | 2005-02-09 | 索尼株式会社 | 位置检测装置 |
CN201429831Y (zh) * | 2009-04-29 | 2010-03-24 | 北京汇冠新技术股份有限公司 | 一种带摄像头触摸屏 |
CN101566897A (zh) * | 2009-06-03 | 2009-10-28 | 广东威创视讯科技股份有限公司 | 触摸屏定位装置及触摸屏定位方法 |
CN101907956A (zh) * | 2010-08-13 | 2010-12-08 | 苏州佳世达电通有限公司 | 判断光学触控屏幕被触控位置的方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107515700A (zh) * | 2017-09-05 | 2017-12-26 | 电子科技大学中山学院 | 一种用于智能镜子的非接触式触屏效果模拟方法 |
Also Published As
Publication number | Publication date |
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KR20130052567A (ko) | 2013-05-22 |
CN102221938A (zh) | 2011-10-19 |
JP2013525884A (ja) | 2013-06-20 |
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