CN107728860A - A kind of touch points of infrared touch screen recognition methods, device and touch-screen equipment - Google Patents
A kind of touch points of infrared touch screen recognition methods, device and touch-screen equipment Download PDFInfo
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- CN107728860A CN107728860A CN201710980632.2A CN201710980632A CN107728860A CN 107728860 A CN107728860 A CN 107728860A CN 201710980632 A CN201710980632 A CN 201710980632A CN 107728860 A CN107728860 A CN 107728860A
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- Prior art keywords
- candidate
- touch
- area
- scanning direction
- light path
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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
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
- G06F3/0423—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen using sweeping light beams, e.g. using rotating or vibrating mirror
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
Abstract
The application provides a kind of touch points of infrared touch screen recognition methods, device and touch-screen equipment, and this method includes：Within a scan period, the scanning of all n scanning directions is performed, to obtain the touch area on each scanning direction；For the touch area on any one scanning direction, the overlapping region of the touch area and the touch area on other scanning directions is obtained, to obtain candidate's determinating area；If candidate's determinating area is the overlapping region of the touch area on m scanning direction, the virtual optical path border intersected on the first scanning direction with the contour line of candidate's determinating area is set；If passing through in virtual optical path border without the light path on the first scanning direction, it is determined that candidate's determinating area is true touch point, wherein, n is the integer more than 2, and m is the integer less than n and more than or equal to 2.The application identifies applied to touch points of infrared touch screen.
Description
Technical field
The application is related to infrared technical field of touch control, more particularly to a kind of touch points of infrared touch screen recognition methods, device
And touch-screen equipment.
Background technology
Touch-screen (also referred to as touch screen) can detect the position of the presence of touch point and touch point in viewing area
Man-machine interaction can be simplified.In current touch technology, infrared touch technology because with environmental suitability is strong, long lifespan,
The recognizable advantages such as more of counting that touch are widely used.
Usual infrared touch panel is rectangular configuration, as shown in figure 1, receiving side 12, one by one long transmitting side is 11, one long
Individual short transmitting side 13 and a short receptor side 14 form.There are some emission lamps 111 in transmitting side 11, it is right on correspondingly received side 12
Should have some reception lamps 121, generally use 1 is scanned to 1 or 1 pair of multimode, Fig. 1 be scanned in a manner of 1 pair 3 for
Example, an emission lamp 111 can light on three scanning directions (direction 1, direction 2 and direction 3 are expressed as in such as 1), opposite 3
Individual to receive lamp 121 while receive the light on three scanning directions, so emission lamp lights successively within a scan period, phase
The reception lamp corresponding with emission lamp answered receives successively, so as to form light net.At present can be according to infrared light path on scanning direction
Whether it is blocked and judges whether that touch event occurs, and judges touch point position.
In the prior art, the traditional polygon addition method identification touch point of generally use, specifically as shown in Fig. 2 passing through
The touch area of each scanning direction is intersected, overlapping region one convex polygon of formation, and the region in the convex polygon is touch
Point, it is now recognized that using the touch point that the polygon addition method identifies as true touch point.In Fig. 2 it is exemplary show touch
It is a little touch point (namely convex polygon that the touch area under four scanning directions (be respectively direction 1 to 4) is crossed to form to touch
A), wherein, the touch area of each scanning direction is the region for 2 light paths composition that each scanning direction is continuously blocked.
Due to above-mentioned traditional method that touch point is identified by the polygon addition method, identified only with light path is blocked
Touch point, without considering influence of the light path to touch point precision that be not blocked, therefore it is not by touching in the touch point of its determination
In the case of the intersecting obtained overlapping region in touch area for touching all scanning directions of screen, may lose the touch point (
That is nonrecognition touch point), so as to which the accuracy of identification to touch point is relatively low.
The content of the invention
Embodiments of the invention provide a kind of touch points of infrared touch screen recognition methods, device and touch-screen equipment.It can carry
The accuracy of identification of high IR touch point.
First aspect, there is provided a kind of touch points of infrared touch screen recognition methods, this method include：
Within a scan period, the scanning of all n scanning directions is performed, to obtain the touch on each scanning direction
Region, touch area on each scanning direction are blocked light path or continuous at least two quilts for wall scroll on each scanning direction
Block the region of light path composition；Wherein n is the integer more than 2；
For the touch area on any one scanning direction, the touch area and the touch on other scanning directions are obtained
The overlapping region in region, to obtain candidate's determinating area；
If candidate's determinating area is the overlapping region of the touch area on m scanning direction, the first scanning direction is set
The upper virtual optical path border intersected with the contour line of candidate's determinating area；First scanning direction is not handed over candidate's determinating area
Folded scanning direction, m are the integer less than n and more than or equal to 2；
If pass through in virtual optical path border without the light path on the first scanning direction, it is determined that candidate's determinating area is true
Touch point.
Optionally, method also includes：
If candidate's determinating area is the overlapping region of the touch area on n scanning direction, it is determined that candidate's determinating area
For true touch point.
Optionally, method also includes：
If there is the light path on the first scanning direction in virtual optical path border by judging area using light path separating candidate
Domain, judge subregion to obtain at least two candidates；
Judge subregion for each candidate：
If candidate judges to include at least one intersection point being crossed to form by the light path that is blocked in subregion, candidate judges
Subregion is true touch point.
Optionally, method also includes：
If there is the light path on the first scanning direction in virtual optical path border by judging area using light path separating candidate
Domain, judge subregion to obtain at least two candidates；
Judge subregion for each candidate：
If the candidate judges to include the light path that is blocked at least two scanning directions, the candidate in subregion
Judge that subregion is true touch point.
Optionally, method also includes：
If the candidate judges not include the intersection point being crossed to form by the light path that is blocked in subregion, the candidate judges
Subregion is terrible point；
Optionally, method also includes：
If the candidate judges not including the light path that is blocked at least two scanning directions, the candidate in subregion
Judge that subregion is terrible point.
Second aspect, there is provided a kind of touch points of infrared touch screen identification device, the device include：
Acquisition module, within a scan period, performing the scanning of all n scanning directions, each swept with obtaining
The touch area on direction is retouched, and for the touch area on any one scanning direction, obtains the touch area and is swept with other
The overlapping region of the touch area on direction is retouched, to obtain candidate's determinating area；Touch area on each scanning direction is every
Wall scroll is blocked the region of light path or the continuous at least two light path compositions that are blocked；Wherein n is the integer more than 2；
Identification module, if for the overlapping region that candidate's determinating area is the touch area on m scanning direction, set
The virtual optical path border intersected on first scanning direction with the contour line of candidate's determinating area；If without the in virtual optical path border
Light path on one scan direction passes through, it is determined that candidate's determinating area is true touch point；First scanning direction is not touch
The scanning direction that region overlaps with candidate's determinating area, m are the integer less than n and more than or equal to 2.
Optionally, identification module is additionally operable to, if candidate's determinating area is the crossover region of the touch area on n scanning direction
Domain, it is determined that candidate's determinating area is true touch point.
Optionally, identification module is additionally operable to, if having in virtual optical path border light path on the first scanning direction by,
Using light path separating candidate's determinating area, subregion is judged to obtain at least two candidates；
Judge subregion for each candidate：
If candidate judges to include at least one intersection point being crossed to form by the light path that is blocked in subregion, candidate judges
Subregion is true touch point.
Optionally, identification module is additionally operable to, if having in virtual optical path border light path on the first scanning direction by,
Using light path separating candidate's determinating area, subregion is judged to obtain at least two candidates；
Judge subregion for each candidate：
If the candidate judges to include the light path that is blocked at least two scanning directions, the candidate in subregion
Judge that subregion is true touch point.
Optionally, identification module is additionally operable to, if the candidate judges not including intersecting shape by the light path that is blocked in subregion
Into intersection point, then the candidate judge that subregion is terrible point.
Optionally, identification module is additionally operable to, if the candidate judges not include at least two scanning directions in subregion
The light path that is blocked, then the candidate judge that subregion is terrible point.
The third aspect, there is provided a kind of touch points of infrared touch screen identification device, the device include：Processor and memory；
Memory is used to store computer executed instructions, when touch points of infrared touch screen identification device is run, processor
The computer executed instructions of memory storage are performed, so that touch points of infrared touch screen identification device performs such as above-mentioned first aspect
Or the touch points of infrared touch screen recognition methods shown in its optional implementation.
Fourth aspect, there is provided a kind of touch-screen equipment, the equipment include such as above-mentioned second aspect or its optional implementation
Or the touch points of infrared touch screen identification device of the above-mentioned third aspect.
5th aspect, there is provided a kind of computer-readable storage medium, the storage medium include computer instruction, work as computer instruction
When running on computers so that computer performs the infrared touch as shown in above-mentioned first aspect or its optional implementation
Shield touch point recognition methods.
6th aspect, there is provided a kind of computer program product, the computer program product include computer instruction, work as meter
When the instruction of calculation machine is run on computers so that computer is performed as shown in above-mentioned first aspect or its optional implementation
Touch points of infrared touch screen recognition methods.
Touch points of infrared touch screen recognition methods, device and the touch-screen equipment that the application provides, within a scan period,
The scanning of all n scanning directions is performed, to obtain the touch area on each scanning direction, and for any one scanning side
Upward touch area, the overlapping region of the touch area and the touch area on other scanning directions is obtained, to obtain candidate
Determinating area；If candidate's determinating area is the overlapping region of the touch area on m scanning direction, the first scanning direction is set
The upper virtual optical path border intersected with the contour line of candidate's determinating area；If without on the first scanning direction in virtual optical path border
Light path pass through, it is determined that candidate's determinating area is true touch point.
Compared with prior art, can be the touch area on m scanning direction in candidate's determinating area by this programme
Overlapping region in the case of, pass through and the virtual optical path that intersects with the contour line of candidate's determinating area on the first scanning direction be set
Border；And judge in virtual optical path border whether without the light path on the first scanning direction by determine candidate's determinating area
Whether it is true touch point.So as to candidate's determinating area be not by all scanning directions touch area it is intersecting obtain it is overlapping
In the case of region, candidate's determinating area will not be directly abandoned, but according to the light path not being blocked on the first scanning direction
To judge whether candidate's determinating area is true touch point, so as to improve the accuracy of identification of touch point.
Brief description of the drawings
Fig. 1 is the structural representation of infrared touch panel in the prior art；
Fig. 2 is the schematic diagram for identifying touch point using traditional polygon addition method in the prior art；
Fig. 3 is the signal of 2 scanning directions corresponding to long transmitting side in 1 pair of 2 scan mode provided in an embodiment of the present invention
Figure；
Fig. 4 is the schematic diagram of touch area provided in an embodiment of the present invention；
Fig. 5 is touch points of infrared touch screen recognition methods schematic diagram one provided in an embodiment of the present invention；
Fig. 6 is touch points of infrared touch screen recognition methods schematic diagram two provided in an embodiment of the present invention；
Fig. 7 is the schematic diagram of candidate's determinating area provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram on determination virtual optical path border provided in an embodiment of the present invention；
Fig. 9 is the schematic diagram one of dividing candidate determinating area provided in an embodiment of the present invention；
Figure 10 is the schematic diagram two of dividing candidate determinating area provided in an embodiment of the present invention；
Figure 11 judges to intersect shape with the presence or absence of the light path that is blocked in subregion for determination candidate provided in an embodiment of the present invention
Into intersection point schematic diagram；
Figure 12 provides a kind of structural representation one of touch points of infrared touch screen identification device for the embodiment of the present invention；
Figure 13 provides a kind of structural representation two of touch points of infrared touch screen identification device for the embodiment of the present invention.
Embodiment
Touch points of infrared touch screen recognition methods, device and touch screen provided in an embodiment of the present invention are set below in conjunction with the accompanying drawings
It is standby to be described in detail.
In embodiments of the present invention, " exemplary " or " such as " etc. word make example, illustration or explanation for expression.This
Be described as in inventive embodiments " exemplary " or " such as " any embodiment or design be not necessarily to be construed as comparing
Other embodiments or design more preferably or more advantage.Specifically, use " exemplary " or " such as " etc. word purport
Related notion is being presented in a concrete fashion.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, while A and B be present, these three situations of individualism B.Symbol herein
Number "/" represent affiliated partner be or relation, such as A/B represents A or B.
In the description of the invention, unless otherwise indicated, the implication of " multiple " refers to two or more.
Some concepts that may relate in the embodiment of the present invention are introduced first.
1st, scanning direction；In 1 couple of n (n>=1) in scan mode, every light path possesses different angles for particular lamp
Degree；For a particular transmission lamp, each angle of the n bar light paths corresponding to it, we term it a scanning direction.Cause
This, 1 pair of n scan mode will have n scanning direction, and one group of directional light with slope can be corresponding with each scanning direction
Road, as shown in Figure 3 in 1 pair of 2 scan mode, 2 scanning directions corresponding to long transmitting side.
2nd, touch area；Each scanning direction, it correspond to one group of parallel light path with slope；When there is touch to occur, touch
Touching a little can all shelter from one in these parallel light paths or continuous some, claim wall scroll to be blocked light path or continuous at least two
Bar be blocked light path composition region be this scanning direction under a touch area.Due to involved in the embodiment of the present invention
The concept of light path is analog quantity, and light path has certain width in actual applications, that is to say, that a usual light path is in practice
It is a light belt, therefore the light path that wall scroll is blocked in the embodiment of the present invention can also be touch area.
Exemplary, Fig. 4 is the schematic diagram of touch area, and a plurality of directional light on a scanning direction is shown in Fig. 4
Road, the light path that where the dotted line signifies that is blocked, we are defined in the light path being continuously blocked, and first light path being blocked is (such as
Light path 1 in Fig. 4) be this touch area beginning boundary, last light path being blocked (light path 2 in such as Fig. 4) for eventually
Only border (the start-stop order for the light path being wherein blocked can exchange), then the touch area on the scanning direction is light in Fig. 4
The rectangular area that the light path 2 of road 1 is formed with the touch-screen border.
Embodiment one
The embodiment of the present invention provides a kind of touch points of infrared touch screen recognition methods, and this method can apply to touch screen and set
It is standby.As shown in figure 5, this method includes including：
S11, within a scan period, the scanning of all n scanning directions is performed, to obtain on each scanning direction
Touch area.
Touch area on above-mentioned each scanning direction for wall scroll on each scanning direction be blocked light path or it is continuous extremely
The region of the few two light path compositions that are blocked；And n is the integer more than 2.
Usual touch-screen equipment can include multiple scanning directions, above-mentioned all n scanning directions, refer to that touch-screen equipment is wrapped
All scanning directions included.Exemplary, if the long transmitting side of touch-screen equipment includes 2 scanning directions, the bob of touch-screen equipment
Penetrating side includes 2 scanning directions, then for the touch-screen equipment, it includes 4 scanning directions.
S12, for the touch area on any one scanning direction, obtain touch area and touching on other scanning directions
The overlapping region in region is touched, to obtain candidate's determinating area.
Wherein, the touch area on different scanning direction is intersected, then the overlapping region of touch area occurs；It is of the invention real
Touch area and the touch on other scanning directions can be obtained for the touch area on any one scanning direction by applying in example
The overlapping region in region.In the embodiment of the present invention, at least one candidate's determinating area can be obtained.
If S13, candidate's determinating area are the overlapping region of the touch area on m scanning direction, the first scanning is set
The virtual optical path border intersected on direction with the contour line of candidate's determinating area.
Wherein, the first scanning direction is scanning direction not overlapping with candidate's determinating area.M be less than n and be more than or
Integer equal to 2.
When true touch point is smaller, for example, true touch point be less than two neighboring light path width when, may make
Obtain the overlapping region that above-mentioned candidate's determinating area is the touch area less than n scanning direction.
The first scanning direction can refer to that the scanning direction meets one kind in following 2 kinds of conditions in the embodiment of the present invention：
1st, there is no touch area on the scanning direction, i.e., all light are not all blocked on this.2nd, scanning direction Shang You touch areas,
But the touch area does not overlap with candidate's determinating area.
In the embodiment of the present invention, virtual optical path border is located at candidate's determinating area outermost, and it is in the first scanning direction
It is upper to intersect with the contour line of candidate's determinating area.
It should be noted that it is actual light path that virtual optical path border, which is not, but the virtual boundary set.
In the embodiment of the present invention.First scanning direction may be included, it is also possible to including multiple first scanning directions.
If S14, pass through in virtual optical path border without the light path on the first scanning direction, it is determined that candidate's determinating area is
True touch point.
Because without the light path on the first scanning direction by illustrating institute in candidate's determinating area in virtual optical path border
Directive light path is blocked, so as to determine that candidate's determinating area is true touch point according to S14.
Embodiment two
The embodiment of the present invention provides a kind of touch points of infrared touch screen recognition methods, and this method can apply to touch screen and set
It is standby.As shown in fig. 6, this method can include：
S101, within a scan period, the scanning of all n scanning directions is performed, to obtain on each scanning direction
Touch area.
S102, for the touch area on any one scanning direction, obtain the touch area and other scanning directions
On touch area overlapping region, to obtain candidate's determinating area.
The above-mentioned description to S11 and S12 is referred to for S101 and S102 associated description, here is omitted.
At least one candidate's determinating area can be obtained in the embodiment of the present invention.For each candidate's determinating area,
To perform following S103-S111, to determine whether candidate's determinating area is true touch point.Exemplary, the present invention is implemented
Example can travel through each candidate's determinating area using S103-S111 method successively, whether to determine each candidate's determinating area
For true touch point.
S103, judge candidate's determinating area whether be touch area on n scanning direction overlapping region.
If candidate's determinating area is the overlapping region of the touch area on n scanning direction, following S104 are performed；If wait
Determinating area is selected then to be performed following for the overlapping region of the touch area on m scanning direction (i.e. less than n scanning direction)
S105 and S106.
In the case where true touch point is sufficiently large, for example, the true touch point is more than two lamp spacing, now determine
Candidate's determinating area be the touch area on n scanning direction, and it by candidate's determinating area is true touch point that can be.
When true touch point is smaller, for example, true touch point be less than two neighboring light path width when, may make
Obtain the overlapping region that above-mentioned candidate's determinating area is the touch area less than n scanning direction.
Exemplary, so that touch-screen equipment includes 4 scanning directions altogether as an example, as shown in Figure 2 above, candidate therein
Determinating area is the overlapping region of the touch area of 4 scanning directions (being identified as direction 1 to direction 4 in fig. 2)；Such as Fig. 7
Shown candidate's determinating area is the touch area of 2 scanning directions (i.e. direction 1 and direction 3) in 4 scanning directions
Overlapping region.
S104, determine that candidate's determinating area is true touch point.
S105, the virtual optical path border intersected on the first scanning direction with the contour line of candidate's determinating area is set.
The S105 of associated description in to(for) the first scanning direction and above-mentioned virtual optical path border may refer in above-mentioned S13
Description, here is omitted.
In the embodiment of the present invention.First scanning direction may be included, it is also possible to including multiple first scanning directions.
Below exemplary explanation is carried out so that the above-mentioned S105 in the embodiment of the present invention can determine two the first scanning directions as an example.
Exemplary, with reference to shown in above-mentioned Fig. 7, candidate's determinating area is the crossover region of the touch area in direction 1 and direction 3
Domain, thus can anti-launch direction 2 and direction 4 be the first scanning direction.
It is further exemplary, as shown in figure 8, can determine to intersect with the contour line of candidate's determinating area in direction 2
Virtual optical path border, respectively border 1 and border 2, and can be determined on direction 4 and the contour line of candidate's determinating area
Intersecting virtual optical path border, respectively border 3 and border 4, (adopt virtual optical path border is represented by dashed line in fig. 8).
S106, judge whether there is the light path on the first scanning direction to pass through in the virtual optical path border.
If without the light path on the first scanning direction by performing following S107 in the virtual optical path border；If virtual
There is the light path on the first scanning direction in light path border by then performing following S108 and S109.
In the case where true touch point (namely actual touch point) is smaller, the area of candidate's determinating area may
More than the area of true touch point, then it is possible that light path be present by candidate's determinating area on the first scanning direction,
But not by the situation of true touch point, therefore need to judge whether the feelings by above-mentioned S106 in embodiments of the present invention
Condition.
The above-mentioned S106 of description in to(for) the first scanning direction and virtual optical path border specifically may refer in above-mentioned S13
Associated description, here is omitted.
It is exemplary, as shown in Figure 8, it can be determined that whether have between border 1 and border 2 light path on direction 2 by, with
And judge whether there is the light path on direction 4 to pass through between border 3 and border 4.
S107, determine that candidate's determinating area is true touch point.
Because without the light path on the first scanning direction by illustrating institute in candidate's determinating area in virtual optical path border
There is the light path on scanning direction to be blocked, be true touch point so as to candidate's determinating area according to determination.
S108, using light path separating candidate's determinating area, judge subregion to obtain at least two candidates.
If have in virtual optical path border light path on the first scanning direction by, illustrate be not in candidate's determinating area
Light path on all scanning directions is all blocked, and the also light path on partial scan direction is by candidate's determinating area, now
It is probably that the area of candidate's determinating area is more than in true touch point, or candidate's determinating area and multiple actual touch be present
Point, it is therefore desirable to which true touch point is further identified to split candidate's determinating area by S108.
It is exemplary, with reference to Fig. 8, if as shown in figure 9, have between border 1 and border 2 light path a on direction 2 by,
Candidate's determinating area is split using light path a, 2 candidates is obtained and judges that (2 candidates judge subregion difference table to subregion
It is shown as B and C).
It is again exemplary, with reference to Fig. 8, as shown in Figure 10, if having between border 1 and border 2 light path a on direction 2 by,
And there is the light path b on direction 4 between border 3 and border 4 by then splitting the candidate using light path a and light path b and judging area
Domain, obtain 4 candidates and judge subregion (4 candidates judge that subregion is expressed as D, E, F and G).
Judge subregion for each candidate, perform following S109-S111 to determine that candidate judges that subregion touches to be true
Touch a little or terrible point.
S109, judge that candidate judges whether include the intersection point being crossed to form by the light path that is blocked in subregion.
If candidate judges to include at least one intersection point being crossed to form by the light path that is blocked in subregion, perform following
S110；If candidate judges not include the intersection point being crossed to form by the light path that is blocked in subregion, following S111 are performed.
S110, determine that candidate judges that subregion is true touch point.
S111, determine that candidate judges that subregion is terrible point.
With reference to Figure 10, candidate judges to exist in subregion F as shown in figure 11, in Figure 11 intersects shape by be blocked light path X and Y
Into intersection point, and do not include the intersection point that is crossed to form by the light path that is blocked in D, E and G, thus may determine that judging that subregion F is
True touch point, and candidate judges that subregion D, E and G are terrible point.
Optionally, above-mentioned S109 may be replaced by following S109a.
S109a, judge that candidate judges whether include the light path that is blocked at least two scanning directions in subregion.
If candidate judges to include the light path that is blocked at least two scanning directions in subregion, perform above-mentioned
S110；If candidate judges not including the light path that is blocked at least two scanning directions in subregion, above-mentioned S111 is performed.
Touch points of infrared touch screen recognition methods provided in an embodiment of the present invention, it is m scanning side in candidate's determinating area
The overlapping region of upward touch area, it is determined that intersect on the first scanning direction with the contour line of candidate's determinating area virtual
Light path border；There is the light path on the first scanning direction in virtual optical path border in the case of, waited using the light path separating
Determinating area is selected, after obtaining at least two candidates judgement subregion, further determines that candidate judges whether subregion is true touch
Touch a little.
Light path in candidate's determinating area on not all scanning direction is all blocked, also on partial scan direction
In the case that light path is by candidate's determinating area, now the area of candidate's determinating area is likely larger than true touch point, or
Multiple true touch points be present in candidate's determinating area.By in this programme, by dividing candidate determinating area, obtaining at least
After two candidates judge subregion, further determine that candidate judges whether subregion is true touch point, can more accurately be known
Other true touch point, further improve the accuracy of identification of touch point.
Can be in the case where candidate's determinating area is the overlapping region of the touch area on m scanning direction, by true
The virtual optical path border intersected on fixed first scanning direction with the contour line of candidate's determinating area；And judge on virtual optical path border
Inside whether without the light path on the first scanning direction by, then to determine whether candidate's determinating area is true touch point, so as to
In the case that candidate's determinating area is not the intersecting obtained overlapping region in touch area by all scanning directions, will not cause by
A touch point is identified as at a distance of nearer multiple true touch points, or the touch point area identified is much larger than actual touch
Point.Improve the accuracy of identification of touch point.
Optionally, it is determined that after true touch point, the coordinate of the true touch point can be directly exported, or can hold
Row track following and smoothing processing, will the true touch point and true touch point determined by the scan period before position,
It is determined that the track touched, and export the coordinate of the true touch point.
The true touch point determined according to embodiments of the present invention is convex polygon, exemplary, in output true touch point
Coordinate when, the coordinate of the center of gravity of the true touch point (namely the convex polygon) can be exported；And/or export this and truly touch
Touch the coordinate on each summit of point (namely the convex polygon).
As shown in figure 12, the embodiment of the present invention provides a kind of touch points of infrared touch screen identification device, and the device includes：
Acquisition module 21, it is each to obtain within a scan period, performing the scanning of all n scanning directions
Touch area on scanning direction, and for the touch area on any one scanning direction, obtain the touch area and other
The overlapping region of touch area on scanning direction, to obtain candidate's determinating area；Touch area on each scanning direction is
The region of the light path that is blocked per wall scroll or the continuous at least two light path compositions that are blocked；Wherein n is the integer more than 2；
Identification module 22, if for the overlapping region that candidate's determinating area is the touch area on m scanning direction, set
Put the virtual optical path border intersected on the first scanning direction with the contour line of candidate's determinating area；If the nothing in virtual optical path border
Light path on first scanning direction passes through, it is determined that candidate's determinating area is true touch point；First scanning direction is without tactile
The scanning direction that region overlaps with candidate's determinating area is touched, m is the integer less than n and more than or equal to 2.
Optionally, identification module 22 is additionally operable to, if candidate's determinating area is the overlapping of the touch area on n scanning direction
Region, it is determined that candidate's determinating area is true touch point.
Optionally, identification module 22 is additionally operable to, if having in virtual optical path border light path on the first scanning direction by,
Light path separating candidate's determinating area is then used, judges subregion to obtain at least two candidates；
Judge subregion for each candidate：
If candidate judges to include at least one intersection point being crossed to form by the light path that is blocked in subregion, candidate judges
Subregion is true touch point.
Optionally, identification module 22 is additionally operable to, if having in virtual optical path border light path on the first scanning direction by,
Light path separating candidate's determinating area is then used, judges subregion to obtain at least two candidates；
Judge subregion for each candidate：
If the candidate judges to include the light path that is blocked at least two scanning directions, the candidate in subregion
Judge that subregion is true touch point.
Optionally, identification module 22 is additionally operable to, if the candidate judges not include being intersected by the light path that is blocked in subregion
The intersection point of formation, then candidate's judgement subregion is terrible point；
Optionally, identification module 22 is additionally operable to, if the candidate judges not include at least two scanning directions in subregion
On the light path that is blocked, then the candidate judge that subregion is terrible point.
As shown in figure 13, the embodiment of the present invention provides a kind of touch points of infrared touch screen identification device, and the device includes：Place
Manage device 31 and memory 32；
Memory is used to store computer executed instructions, when touch-screen touch points of infrared touch screen identification device is run,
The computer executed instructions of computing device memory storage, so that touch points of infrared touch screen identification device is performed such as the present invention
Touch points of infrared touch screen recognition methods shown in embodiment.
Exemplary, as shown in figure 13, above-mentioned processor 31 and memory 32 can be connected by bus 33.
Bus 33 can be that Peripheral Component Interconnect standard (peripheral component interconnect, PCI) is total
Line or EISA (extended industry standard architecture, EISA) bus etc..Bus
33 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 13 with a thick line, but simultaneously
Only a bus or a type of bus are not indicated that.
The embodiment of the present invention provides a kind of touch-screen equipment, and the equipment can include infrared tactile as shown in above-mentioned Figure 12 or 13
Touch screen touch point identification device.
The embodiment of the present invention provides a kind of computer-readable storage medium, and the storage medium includes computer instruction, works as computer
When instruction is run on computers so that computer performs the touch points of infrared touch screen identification side shown in the embodiment of the present invention
Method.
The embodiment of the present invention provides a kind of computer program product, and the computer program product includes computer instruction,
When computer instruction is run on computers so that computer performs the touch points of infrared touch screen shown in the embodiment of the present invention
Recognition methods.
The part that technical scheme provided in an embodiment of the present invention substantially contributes to prior art in other words, or should
The all or part of technical scheme can be realized by software program, hardware, firmware or its any combination.When using software
When program is realized, the computer program product includes one or more computer instructions.Load and perform on computers the meter
When calculation machine instructs, produce whole or in part according to the flow or function in the embodiment of the present invention.The computer can be general
Computer, special-purpose computer, computer network or other programmable devices.The computer instruction can be stored in computer can
Read in storage medium, or transmitted from a computer-readable recording medium to another computer-readable recording medium, for example,
The computer instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable,
Optical fiber, Digital Subscriber Line (digital subscriber line, DSL)) mode or wireless (such as infrared, wireless, microwave etc.)
Mode is transmitted to another web-site, computer, server or data center.The computer-readable recording medium can be meter
Any usable medium that calculation machine can access is either including the integrated server of one or more usable mediums, data center etc.
Data storage device.The usable medium can be magnetic medium (for example, floppy disk, disk, tape), optical medium (for example, numeral regards
Frequency CD (digital video disc, DVD)) or semiconductor medium (such as solid state hard disc (solid state
Drives, SSD)) etc..
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenient and succinct, can be as needed and by above-mentioned work(only with the division of above-mentioned each functional module for example, in practical application
It can distribute and be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, more than completion
The all or part of function of description.The specific work process of the system, apparatus, and unit of foregoing description, it may be referred to foregoing side
Corresponding process in method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the module or
The division of unit, only a kind of division of logic function, can there are other dividing mode, such as multiple units when actually realizing
Or component can combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, institute
Display or the mutual coupling discussed or direct-coupling or communication connection can be by some interfaces, device or unit
INDIRECT COUPLING or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
More than, it is only embodiment of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (13)
- A kind of 1. touch points of infrared touch screen recognition methods, it is characterised in that including：Within a scan period, the scanning of all n scanning directions is performed, to obtain the Petting Area on each scanning direction Domain, touch area on each scanning direction are blocked light path or continuous at least two for wall scroll on each scanning direction The region of the light path that is blocked composition；Wherein n is the integer more than 2；For the touch area on any one scanning direction, the touch area and the Petting Area on other scanning directions are obtained The overlapping region in domain, to obtain candidate's determinating area；If candidate's determinating area is the overlapping region of the touch area on m scanning direction, the first scanning direction is set The upper virtual optical path border intersected with the contour line of candidate's determinating area；First scanning direction for not with the time The overlapping scanning direction of determinating area is selected, m is the integer less than n and more than or equal to 2；If pass through in the virtual optical path border without the light path on the first scanning direction, it is determined that candidate's determinating area is True touch point.
- 2. according to the method for claim 1, it is characterised in that methods described also includes：If candidate's determinating area is the overlapping region of the touch area on n scanning direction, it is determined that the candidate judges Region is true touch point.
- 3. according to the method for claim 1, it is characterised in that methods described also includes：If there is the light path on the first scanning direction in the virtual optical path border by using time described in the light path separating Determinating area is selected, judges subregion to obtain at least two candidates；Judge subregion for each candidate：If the candidate judges to include at least one intersection point being crossed to form by the light path that is blocked, the candidate in subregion Judge that subregion is true touch point.
- 4. according to the method for claim 1, it is characterised in that methods described also includes：If there is the light path on the first scanning direction in the virtual optical path border by using time described in the light path separating Determinating area is selected, judges subregion to obtain at least two candidates；Judge subregion for each candidate：If the candidate judges to include the light path that is blocked at least two scanning directions in subregion, the candidate judges Subregion is true touch point.
- 5. according to the method for claim 3, it is characterised in thatIf the candidate judges not include the intersection point being crossed to form by the light path that is blocked in subregion, the candidate judges sub-district Domain is terrible point.
- 6. according to the method for claim 4, it is characterised in thatIf the candidate judges not including the light path that is blocked at least two scanning directions in subregion, the candidate judges Subregion is terrible point.
- A kind of 7. touch points of infrared touch screen identification device, it is characterised in that including：Acquisition module, within a scan period, performing the scanning of all n scanning directions, to obtain each scanning side Upward touch area, and for the touch area on any one scanning direction, obtain the touch area and other scannings The overlapping region of touch area on direction, to obtain candidate's determinating area；Touch area on each scanning direction is Wall scroll is blocked the region of light path or the continuous at least two light path compositions that are blocked on each scanning direction；Wherein n is more than 2 Integer；Identification module, if for the overlapping region that candidate's determinating area is the touch area on m scanning direction, set The virtual optical path border intersected on first scanning direction with the contour line of candidate's determinating area；If in the virtual optical roadside Pass through in boundary without the light path on the first scanning direction, it is determined that candidate's determinating area is true touch point；Described first sweeps The scanning direction for retouching direction not overlap with candidate's determinating area, m are the integer less than n and more than or equal to 2.
- 8. device according to claim 7, it is characterised in that the identification module is additionally operable to, if the candidate judges area Domain is the overlapping region of the touch area on n scanning direction, it is determined that candidate's determinating area is true touch point.
- 9. device according to claim 7, it is characterised in that the identification module is additionally operable to, if in the virtual optical path There is the light path on the first scanning direction in border by then using candidate's determinating area described in the light path separating, to obtain extremely Few two candidates judge subregion；Judge subregion for each candidate：If the candidate judges to include at least one intersection point being crossed to form by the light path that is blocked, the candidate in subregion Judge that subregion is true touch point.
- 10. device according to claim 7, it is characterised in that the identification module is additionally operable to, if in the virtual optical path There is the light path on the first scanning direction in border by then using candidate's determinating area described in the light path separating, to obtain extremely Few two candidates judge subregion；Judge subregion for each candidate：If the candidate judges to include the light path that is blocked at least two scanning directions in subregion, the candidate judges Subregion is true touch point.
- 11. device according to claim 9, it is characterised in that the identification module is additionally operable to, if the candidate judges son Do not include the intersection point being crossed to form by the light path that is blocked in region, then the candidate judges that subregion is terrible point.
- 12. device according to claim 10, it is characterised in that the identification module is additionally operable to, if the candidate judges The light path that is blocked at least two scanning directions is not included in subregion, then the candidate judges that subregion is terrible point.
- 13. a kind of touch-screen equipment, it is characterised in that including the touch points of infrared touch screen as described in claim any one of 7-12 Identification device.
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| CN201710980632.2A CN107728860B (en) | 2017-10-19 | 2017-10-19 | Touch point identification method and device of infrared touch screen and touch screen equipment |
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