CN103941872B - Interactive projection method for achieving writing with two pens and writing with two pens approaching to each other infinitely - Google Patents
Interactive projection method for achieving writing with two pens and writing with two pens approaching to each other infinitely Download PDFInfo
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- CN103941872B CN103941872B CN201410171764.7A CN201410171764A CN103941872B CN 103941872 B CN103941872 B CN 103941872B CN 201410171764 A CN201410171764 A CN 201410171764A CN 103941872 B CN103941872 B CN 103941872B
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Abstract
The invention provides an interactive projection device for achieving writing with two pens and writing with the two pens approaching to each other infinitely. The interactive projection device comprises at least two photoelectric pens, namely the first infrared photoelectric pen and the second infrared photoelectric pen, a PC, a projector and an interactive projection module. The PC is connected with the projector and the interactive projection module. The interactive projection module captures writing obtained through the first infrared photoelectric pen and the second infrared photoelectric pen and conducts distinguishing operation on infrared rays emitted by the first infrared photoelectric pen and infrared rays emitted by the second infrared photoelectric pen. The interactive projection module processes captured images into coordinate values of the first infrared photoelectric pen and the second infrared photoelectric pen on a projection surface, and transmits the coordinate values to the PC. The invention further provides a method for achieving writing with the two pens and writing with the two pens approaching to each other infinitely. By means of the interactive projection device and method, when a user uses at least two infrared photoelectric pens to write on a board, completely independent functional operation can be conducted; moreover, even when the two pens approach to each other infinitely till coincide completely for writing, erroneous actions such as jumping and stringing of the pens can not happen.
Description
Technical field
The present invention relates to a kind of optical image interaction technical field, more particularly, to one kind realize two writing and two
The interaction method that infinite approach is write.
Background technology
The light pen position that principle is sensitive chip of realizing of the electric whiteboard system of optical image technology is followed the tracks of, and its work is former
Reason is：Write using light pen and operate the infrared light spot producing, cam device real-time image acquisition simultaneously, real by signal transacting
When analysis picture signal extract the positional information of luminous point, and the positional information obtaining is input to by calculating by interface circuit
Machine, with algorithm, the light pen physical location on perspective plane is corresponding with the coordinate position that computer exports picture, realize pen and computer light
Target is interactive.
But the optical imaging apparatus on market are substantially all only supports that one-pen is write, and occurs now supporting many
The device write, but be all false many (" false many " concept be cannot carry out when all of pen is write simultaneously simultaneously completely only
Vertical operation, for example, can not define different colors to every pen, be only a kind of color, when same picture is write, every pen
Cannot complete independently different operating), but actual user is frequently necessary to be completely independent using different pens in writing process
Feature operation, so the product on market cannot meet user's use demand.
And the optical imaging apparatus on market, occur now to support the many devices write, but if two are infrared
Near when writing, because infrared light pen only sends a kind of infrared ray, the IR that light pen sends when close occurs light pen
Superposition, lead to camera lens cannot correctly area bifurcate the position that pen and its pen be located it may appear that a jump phenomenon (cursor of one-pen is past
Another one-pen is jumped it is impossible to normal use).
Content of the invention
One of the technical problem to be solved in the present invention, is to provide one kind to realize two and write writing with two infinite approachs
Interactive projection device, this device is to realize two to write the base that the interaction write with two infinite approachs provides hardware
Plinth.
One of problem of the present invention is realized in：A kind of realize two and write the interaction write with two infinite approachs
Projection arrangement, described device includes at least two infrared light electroprobes one and infrared light electroprobe two, PC, projector and interaction
Projection module；Described infrared light electroprobe one, infrared light electroprobe two are located on the perspective plane of electronic whiteboard, and infrared light electroprobe one
Go out the infrared ray of first wave length, described infrared light electroprobe two sends the infrared ray of second wave length, and first wave length and second wave length are not
Identical；Described PC is connected with projector and interaction module respectively, and described interaction module is to infrared light electroprobe one, red
Outer writing of photoelectric pen two is captured, and the infrared ray that infrared light electroprobe one, infrared light electroprobe two are sent makes a distinction behaviour
Make, interaction module is infrared light electroprobe one, infrared light electroprobe two coordinate value on the projection surface to the image procossing of capture,
And coordinate value is transferred to PC.
Further, described PC can be built in the independent PC put in or beyond projector.
Further, described interaction module includes a pcb board, described pcb board has been arranged side by side two and has filtered throwing
Shadow assembly, described two filtration projecting subassemblies all include a lens mount, be disposed with described lens mount camera lens, optical filter with
And sensitive chip, described sensitive chip is placed on pcb board, and described two optical filters filtering projecting subassemblies respectively can first waves thoroughly
The long infrared ray with second wave length, and the sensitive chips of two filtration projecting subassemblies can only receive corresponding optical filter transmission respectively
First wave length and second wave length infrared ray；Described pcb board is connected with described PC.
The two of the technical problem to be solved in the present invention, are to provide one kind to realize two and write writing with two infinite approachs
Interaction method it is achieved that when user carries out writing operation using at least two infrared light electroprobes in plate face, Neng Goujin
The completely self-contained feature operation of row, and two pens also can be not in jump pen string with infinite approach until being completely superposed when writing
The misoperations such as pen.
The two of the problem of the present invention are realized in：A kind of realize two and write the interaction write with two infinite approachs
Projecting method it is characterised in that：Described interaction method need to provide at least two infrared light electroprobes one and infrared light electroprobe two,
PC, projector and interaction module；
Methods described is specially：When described infrared light electroprobe one and infrared light electroprobe two keep a distance to write, infrared light
Electroprobe one sends the infrared ray of first wave length, and infrared light electroprobe two sends the infrared ray of second wave length, first wave length and the second ripple
Length differs；Described PC through projector by image projection on the perspective plane of electronic whiteboard, described interaction module is to red
Outer photoelectric pen one, writing of infrared light electroprobe two are captured, and infrared light electroprobe one, infrared light electroprobe two are sent infrared
Line makes a distinction operation, and interaction module is infrared light electroprobe one, infrared light electroprobe two to the image procossing capturing in projection
Coordinate value on face, and coordinate value is transferred to PC；Or described infrared light electroprobe one and infrared light electroprobe two infinite approach book
When writing, infrared light electroprobe one and infrared light electroprobe two produce the infrared light of reflection between the two, and described interaction module is to red
Outer photoelectric pen one, writing of infrared light electroprobe two are captured, and infrared light electroprobe one, infrared light electroprobe two are sent infrared
Line makes a distinction operation, the infrared light that reflection occurs is carried out screening out after process simultaneously, and the image procossing to capture is infrared light
Electroprobe one, infrared light electroprobe two coordinate value on the projection surface, and coordinate value is transferred to PC.
Further, described interaction module includes a pcb board, described pcb board has been arranged side by side two and has filtered throwing
Shadow assembly, described two filtration projecting subassemblies all include a lens mount, be disposed with described lens mount camera lens, optical filter with
And sensitive chip, described sensitive chip is placed on pcb board, and described two optical filters filtering projecting subassemblies respectively can first waves thoroughly
The long infrared ray with second wave length, and the sensitive chips of two filtration projecting subassemblies can only receive corresponding optical filter transmission respectively
First wave length and second wave length infrared ray；Described pcb board is connected with described PC.
Further, the described infrared ray that infrared light electroprobe one, infrared light electroprobe two are sent makes a distinction operation specifically
For：Infrared light electroprobe one, infrared light electroprobe two are write operation on the projection surface simultaneously, then infrared light pen one sends first wave
Long infrared ray, infrared light electroprobe two sends the infrared ray of second wave length；Two infrared rays can be simultaneously by two filtration projection groups
The camera lens of part, is separately installed with the ultrared optical filter of the saturating first wave length of energy and second wave length, such two optical filterings below camera lens
Piece can only pass through the infrared ray of corresponding first wave length and second wave length respectively, is now provided with corresponding below two optical filters
Sensitive chip, two sensitive chips can only receive the first wave length of corresponding optical filter transmission and the infrared ray of second wave length respectively,
It is achieved thereby that the differentiation to two infrared light electroprobes.
Further, described the infrared light that reflection occurs is carried out screening out process be specially：Infrared light electroprobe one sends
The infrared ray of one wavelength, by optical filter, then the corresponding sensitive chip of optical filter can only accept the infrared ray of first wave length, due to
The infrared ray that infrared light electroprobe one sends passes through the infrared light of an infrared light electroprobe two structure reflection part, and now sensitive chip connects
The portrait received has two hot spots to be respectively a, b, then the corresponding area of two hot spots is S (a), S (b), and a hot spot is infrared light electroprobe
One is directed through the luminous point that optical filter catches on sensitive chip, and b hot spot is infrared light electroprobe one light in infrared light electroprobe
The luminous point that on two, the same optical filter of reflectance-transmittance catches on same sensitive chip, because infrared light electroprobe one is in infrared light
On electroprobe two, the infrared luminous intensity of reflection is extremely weak, then：S(b)<<S(a)；When sensitive chip catches two hot spot a, b, light can be obtained
Spot a, b are respectively in the positional information of sensitive chip, the information processing hot spot a, the b obtaining：Hot spot a (X (a), Y (a), S
(a)), hot spot b (X (b), Y (b), S (b))；Wherein X (a), Y (a) are respectively the X and Y coordinates of spot a, and X (b), Y (b) are respectively
The X and Y coordinates of spot b；The area of hot spot a, b is ranked up, hot spot big for area is retained by sequence, can obtain institute
The hot spot coordinate information needing, thus complete the infrared ray that infrared light electroprobe one sends to reflect one by infrared light electroprobe two structure
Point infrared light screened out；In the same manner, the infrared ray that infrared light electroprobe two sends reflects one by infrared light electroprobe one structure
Partial infrared light also can be screened out.
The invention has the advantages that：User carries out writing operation, Neng Goujin using infrared light electroprobe one, two in plate face
The completely self-contained feature operation of row, is not in the phenomenon that two ID exchange, realizes true two and write, and such as teacher is using
Infrared light electroprobe one carries out the annotation of red pen, and student can be answered to examination question using infrared light electroprobe two, is achieved in that
With regard to the theory of classroom interactions in modern teaching, strengthen the interest of teaching.In addition, two pens can be with infinite approach up to completely
Coincidence is write, and occurs without the misoperations such as a jump string pen.
Brief description
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the interactive structural representation of apparatus of the present invention.
Fig. 3 passes through the red of an infrared light electroprobe two structure reflection part for the infrared ray that infrared light electroprobe one of the present invention sends
When outer smooth, the picture that sensitive chip catches.
Fig. 4 passes through the red of an infrared light electroprobe one structure reflection part for the infrared ray that infrared light electroprobe two of the present invention sends
When outer smooth, the picture that sensitive chip catches.
Specific embodiment
Refer to shown in Fig. 1 to Fig. 4, the present invention is a kind of to realize two and write the interactive throwing write with two infinite approachs
Image device, described device includes at least two infrared light electroprobes 1 and infrared light electroprobe 22, PC 3, projector 4 and mutually
Dynamic projection module 5；Described infrared light electroprobe 1, infrared light electroprobe 22 are located on the perspective plane 6 of electronic whiteboard, and infrared electro
The infrared ray that pen 1 sends first wave length, described infrared light electroprobe 22 sends the infrared ray of second wave length, first wave length and the
Two wavelength differ；Described PC 3 is connected with projector 4 and interaction module 5 respectively, and described interaction module 5 is to red
Outer photoelectric pen 1, writing of infrared light electroprobe 22 are captured, and infrared light electroprobe 1, infrared light electroprobe 22 are sent
Infrared ray makes a distinction operation, and interaction module 5 is infrared light electroprobe 1, infrared light electroprobe 22 to the image procossing of capture
Coordinate value on perspective plane 6, and coordinate value is transferred to PC 3.Described PC 3 can be built in be put in or beyond projector 4
Independent PC 3.
In the present invention, described interaction module 5 includes a pcb board 51, and described pcb board 51 has been arranged side by side two
Filter projecting subassembly 52, described two filtration projecting subassemblies 52 all include a lens mount 521, set successively in described lens mount 521
It is equipped with camera lens 522, optical filter 523 and sensitive chip 524, described sensitive chip 524 is placed on pcb board 51, described two mistakes
The saturating first wave length of optical filter 523 difference energy of filter projecting subassembly 52 and the infrared ray of second wave length, and two filtration projecting subassemblies
52 sensitive chip can only receive the first wave length of corresponding optical filter 523 transmission and the infrared ray (such as of second wave length respectively
Optical filter energy first wave length thoroughly, another optical filter energy second wave length thoroughly, then after an optical filter, a corresponding sensitive chip can only connect
Receive the infrared ray of first wave length, after another optical filter, corresponding another sensitive chip can only receive the infrared ray of second wave length)；Institute
State pcb board 51 to be connected with described PC 3.
Realize two and write the interaction method write with two infinite approachs present invention also offers a kind of, described mutually
Dynamic projecting method need to provide at least two infrared light electroprobes 1 and infrared light electroprobe 22, PC 3, projector 4 and interactive throwing
Shadow module 5；
Methods described is specially：When described infrared light electroprobe 1 and infrared light electroprobe 22 keep a distance to write, infrared
Photoelectric pen 1 sends the infrared ray of first wave length, and infrared light electroprobe 22 sends the infrared ray of second wave length, first wave length and
Two wavelength differ；Described PC 3 through projector 4 by image projection on the perspective plane 6 of electronic whiteboard, described interaction mould
Group 5 captures to infrared light electroprobe 1, writing of infrared light electroprobe 22, and to infrared light electroprobe 1, infrared light electroprobe two
2 infrared rays sending make a distinction operation, and interaction module 5 is infrared light electroprobe 1, infrared light to the image procossing of capture
Coordinate value on perspective plane 6 for the electroprobe 22, and coordinate value is transferred to PC 3；Or described infrared light electroprobe 1 and infrared light
When electroprobe 22 infinite approach is write, infrared light electroprobe 1 and infrared light electroprobe 22 produce the infrared light of reflection, institute between the two
State interaction module 5 infrared light electroprobe 1, writing of infrared light electroprobe 22 are captured, and to infrared light electroprobe 1,
The infrared ray that infrared light electroprobe 22 sends makes a distinction operation, the infrared light that reflection occurs is carried out screening out after process simultaneously, right
The image procossing of capture is infrared light electroprobe 1, coordinate value on perspective plane 6 for the infrared light electroprobe 22, and coordinate value is transmitted
To PC 3.
In the present invention, described interaction module 5 includes a pcb board 51, and described pcb board 51 has been arranged side by side two
Filter projecting subassembly 52, described two filtration projecting subassemblies 52 all include a lens mount 521, set successively in described lens mount 521
It is equipped with camera lens 522, optical filter 523 and sensitive chip 524, described sensitive chip 524 is placed on pcb board 51, described two mistakes
The saturating first wave length of optical filter 523 difference energy of filter projecting subassembly 52 and the infrared ray of second wave length, and two filtration projecting subassemblies
52 sensitive chip 524 can only receive the infrared ray of the first wave length that corresponding optical filter 523 passes through and second wave length (such as respectively
One optical filter energy first wave length thoroughly, another optical filter energy second wave length thoroughly, then after an optical filter, a corresponding sensitive chip can only
Receive the infrared ray of first wave length, after another optical filter, corresponding another sensitive chip can only receive the infrared ray of second wave length)；
Described pcb board 51 is connected with described PC 3.
The described infrared ray that infrared light electroprobe 1, infrared light electroprobe 22 are sent makes a distinction operation and is specially：Infrared
Photoelectric pen 1, infrared light electroprobe 22 are write operation on perspective plane 6 simultaneously, then infrared light pen 1 sends first wave length
Infrared ray, infrared light electroprobe 22 sends the infrared ray of second wave length；Two infrared rays can be simultaneously by two filtration projecting subassemblies
52 camera lens 522, is separately installed with the ultrared optical filter 523 of the saturating first wave length of energy and second wave length, so below camera lens
Two optical filters 523 can only pass through the infrared ray of corresponding first wave length and second wave length respectively, now below two optical filters 523
Be provided with corresponding sensitive chip 524, two sensitive chips 524 can only receive respectively the first wave length that corresponding optical filter passes through and
The infrared ray of second wave length, it is achieved thereby that the differentiation to two infrared light electroprobes.
Described the infrared light that reflection occurs is carried out screening out process be specially：Infrared light electroprobe 1 sends first wave length
Infrared ray, by optical filter 523, then corresponding photosensitive 524 infrared rays that can only accept first wave length of core of optical filter 523, by
Pass through the infrared light of an infrared light electroprobe 22 structure reflection part in the infrared ray that infrared light electroprobe 1 sends, as shown in figure 3,
The portrait that now sensitive chip receives has two hot spots to be respectively a, b, then the corresponding area of two hot spots is S (a), S (b), a light
Spot is the luminous point that infrared light electroprobe 1 is directed through that optical filter 523 catches on sensitive chip, and b hot spot is infrared light electroprobe
The one 1 light luminous point that the same optical filter of reflectance-transmittance catches on same sensitive chip on infrared light electroprobe 22, due to
The infrared luminous intensity that infrared light electroprobe 1 reflects on infrared light electroprobe 22 is extremely weak, then：S(b)<<S(a)；Sensitive chip catches
During two hot spot a, b, hot spot a, b positional information in sensitive chip can be obtained, process the information of hot spot a, the b obtaining respectively
For：Hot spot a (X (a), Y (a), S (a)), hot spot b (X (b), Y (b), S (b))；Wherein X (a), Y (a) are respectively X and Y of spot a
Coordinate, X (b), Y (b) are respectively the X and Y coordinates of spot b；The area of hot spot a, b is ranked up, sorts light big for area
Spot is retained, and can obtain required hot spot coordinate information, thus complete the infrared ray that infrared light electroprobe 1 sends pass through red
An outer photoelectric pen 22 structure reflection part infrared light screened out；In the same manner, as shown in figure 4, infrared light electroprobe 22 sends
Infrared ray pass through the infrared light of an infrared light electroprobe 1 structure reflection part and also can be screened out, infrared luminous intensity now
Extremely weak, then：S(a)<<S(b).
With reference to a specific embodiment, the invention will be further described：
As shown in Fig. 2 on the projection surface, infrared light pen 1,2 carries out writing operation simultaneously, and infrared light pen 1 sends X wavelength
Infrared ray, infrared light pen 2 sends the infrared ray of Y wavelength；Infrared ray can pass through two camera lenses simultaneously, but due to having below camera lens point
Arrowband infrared fileter is not installed, the infrared ray that wavelength is X, Y can only be passed through respectively, so the sensitive chip below optical filter
The infrared ray of X, Y wavelength can only be received, be so achieved that the differentiation to two pens.
On the projection surface, near when carrying out writing operation simultaneously, infrared light pen 1 sends the infrared of X wavelength to infrared light pen 1,2
Line, the hot spot of formation is a, and infrared light pen 2 sends the infrared ray of Y wavelength, and the hot spot of formation is b；Infrared ray can pass through two simultaneously
Individual camera lens, but due to being separately installed with arrowband infrared fileter below camera lens, can only pass through wavelength respectively is the infrared of X, Y
Line, so the sensitive chip below optical filter can only receive the infrared ray of X, Y wavelength, a sensitive chip can catch as shown in Figure 3
Picture, another sensitive chip can catch picture as shown in Figure 4.If two infrared light pens 1,2 are exceeding certain distance book
Write, the infrared that arrowband infrared fileter can be sent completely is separately.
But because two infrared light pens are near writing, the body structure that the infrared ray that pen sends can pass through other side is anti-
Penetrate the infrared of a part, so two sensitive chips, catching and 2 hot spots occur on picture, but because the brightness of hot spot differs
Sample, so graphical analysis to be carried out just can distinguish really infrared light pen.
For example：Infrared light pen 1,2 carries out writing operation near simultaneously, and infrared light pen 1 sends the infrared ray of X wavelength, passes through
Arrowband infrared fileter, the first sensitive chip catches picture as shown in Figure 3, and the portrait now receiving has two hot spots to be respectively
The corresponding area of a, b, two hot spot is S (a), and S (b), a hot spot is that infrared light pen 1 is directed through infrared first optical filter in arrowband
The luminous point catching on the first sensitive chip, and b hot spot is that infrared light pen 1 light reflectance-transmittance arrowband on infrared light pen 2 is red
The luminous point that outer first optical filter catches on the first sensitive chip, the infrared light being reflected on infrared light pen 2 due to infrared light pen 1
Intensity is extremely weak, so having：S(b)<<S(a)；Two hot spots that first sensitive chip catches, process to picture, can hold very much
Easily obtain the positional information in the first sensitive chip for the hot spot, process the hot spot a obtaining, the information of b is respectively：
Hot spot a (X (a), Y (a), S (a)), hot spot b (X (b), Y (b), S (b))
The area of hot spot is ranked up, the maximum hot spot of area is retained by sequence, it is possible to obtain correct hot spot coordinate
Information.
In the same manner, the second sensitive chip catches picture as shown in Figure 4, and the portrait now receiving has two hot spots to be respectively a,
B, the corresponding area of two hot spots is S (a), and S (b), a hot spot is that infrared light pen 2 is directed through infrared second optical filter in arrowband and exists
The luminous point catching on second sensitive chip, and b hot spot is that infrared light pen 2 light reflectance-transmittance arrowband on infrared light pen 1 is infrared
The luminous point that second optical filter catches on the second sensitive chip, the infrared light intensity being reflected on infrared light pen 1 due to infrared light pen 2
Degree is extremely weak, so having：S(a)<<S(b)；Two hot spots that second sensitive chip catches, process to picture, can be easy to
Obtain the positional information in the second sensitive chip for the hot spot, process the hot spot a obtaining, the information of b is respectively：
Hot spot a (X (a), Y (a), S (a)), hot spot b (X (b), Y (b), S (b))
The area of hot spot is ranked up, the maximum hot spot of area is retained by sequence, it is possible to obtain correct hot spot coordinate
Information.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modify, all should belong to the covering scope of the present invention.
Claims (3)
1. a kind of realize two write the interaction method write with two infinite approachs it is characterised in that：Described interactive throwing
Image method need to provide at least two infrared light electroprobes one and infrared light electroprobe two, PC, projector and interaction module；
Methods described is specially：When described infrared light electroprobe one and infrared light electroprobe two keep a distance to write, infrared light electroprobe
One infrared ray sending first wave length, infrared light electroprobe two sends the infrared ray of second wave length, and first wave length and second wave length are not
Identical；Described PC through projector by image projection on the perspective plane of electronic whiteboard, described interaction module is to infrared light
Electroprobe one, writing of infrared light electroprobe two are captured, and the infrared ray that infrared light electroprobe one, infrared light electroprobe two are sent enters
Row distinguishes operation, and interaction module is to the image procossing capturing for infrared light electroprobe one, infrared light electroprobe two on the projection surface
Coordinate value, and coordinate value is transferred to PC；Or described infrared light electroprobe one and infrared light electroprobe two infinite approach are when writing,
Infrared light electroprobe one and infrared light electroprobe two produce the infrared light of reflection between the two, and described interaction module is to infrared electro
Pen one, writing of infrared light electroprobe two are captured, and the infrared ray that infrared light electroprobe one, infrared light electroprobe two are sent is carried out
Distinguish operation, simultaneously to occur reflection infrared light carry out screening out after process, to capture image procossing be infrared light electroprobe one,
Infrared light electroprobe two coordinate value on the projection surface, and coordinate value is transferred to PC；
Described interaction module includes a pcb board, described pcb board has been arranged side by side two filtration projecting subassemblies, described two
Individual filtration projecting subassembly all includes a lens mount, is disposed with camera lens, optical filter and sensitive chip, institute in described lens mount
State sensitive chip to be placed on pcb board；
Described the infrared light that reflection occurs is carried out screening out process be specially：Infrared light electroprobe one sends the infrared of first wave length
Line, by optical filter, then the corresponding sensitive chip of optical filter can only accept the infrared ray of first wave length, due to infrared light electroprobe one
The infrared ray sending passes through the infrared light of an infrared light electroprobe two structure reflection part, and the portrait that now sensitive chip receives has two
Individual hot spot is respectively a, b, then the corresponding area of two hot spots is S (a), S (b), and a hot spot is that infrared light electroprobe connects always through filter
The luminous point that mating plate catches on sensitive chip, and b hot spot is infrared light electroprobe one light reflectance-transmittance on infrared light electroprobe two
The luminous point that same optical filter catches on same sensitive chip, because infrared light electroprobe one reflects on infrared light electroprobe two
Infrared luminous intensity extremely weak, then：S(b)<<S(a)；When sensitive chip catches two hot spot a, b, hot spot a, b can be obtained photosensitive
The positional information of chip, the information processing hot spot a, the b obtaining is respectively：Hot spot a (X (a), Y (a), S (a)), hot spot b (X
(b),Y(b),S(b))；Wherein X (a), Y (a) are respectively the X and Y coordinates of spot a, and X (b), Y (b) are respectively X and Y of spot b
Coordinate；The area of hot spot a, b is ranked up, hot spot big for area is retained by sequence, required hot spot can be obtained and sit
Mark information, thus complete the infrared light that the infrared ray that infrared light electroprobe one sends passes through an infrared light electroprobe two structure reflection part
Screened out；In the same manner, the infrared ray that infrared light electroprobe two sends passes through the infrared light of an infrared light electroprobe one structure reflection part
Also can be screened out.
2. according to claim 1 realize two and write the interaction method write with two infinite approachs, its feature
It is：The saturating first wave length of optical filter difference energy of described two filtration projecting subassemblies and the infrared ray of second wave length, and two mistakes
The sensitive chip of filter projecting subassembly can only receive the first wave length of corresponding optical filter transmission and the infrared ray of second wave length respectively；
Described pcb board is connected with described PC.
3. according to claim 1 realize two and write the interaction method write with two infinite approachs, its feature
It is：The described infrared ray that infrared light electroprobe one, infrared light electroprobe two are sent makes a distinction operation and is specially：Infrared light electroprobe
First, infrared light electroprobe two is write operation on the projection surface simultaneously, then infrared light pen one sends the infrared ray of first wave length, red
Outer photoelectric pen two sends the infrared ray of second wave length；Two infrared rays can be simultaneously by the camera lens of two filtration projecting subassemblies, camera lens
Lower section is separately installed with the ultrared optical filter of the saturating first wave length of energy and second wave length, and such two optical filters can only pass through respectively
Corresponding first wave length and the infrared ray of second wave length, are now provided with corresponding sensitive chip, two senses below two optical filters
Optical chip can only receive the infrared ray of the first wave length that corresponding optical filter passes through and second wave length respectively, it is achieved thereby that to two
Prop up the differentiation of infrared light electroprobe.
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| CN201410171764.7A CN103941872B (en) | 2014-04-25 | 2014-04-25 | Interactive projection method for achieving writing with two pens and writing with two pens approaching to each other infinitely |
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| CN105653025B (en) * | 2015-12-22 | 2019-12-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN106547410B (en) * | 2016-11-24 | 2019-03-12 | 南京仁光电子科技有限公司 | A kind of system of the multilayer operation based on same screen |
| CN106648171B (en) * | 2016-12-08 | 2019-03-08 | 南京仁光电子科技有限公司 | A kind of interactive system and method based on lettering pen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801741A (en) * | 1971-04-30 | 1974-04-02 | Image Analysing Computers Ltd | Feature selection in image analysis |
| CN102109929A (en) * | 2009-12-28 | 2011-06-29 | 鸿富锦精密工业（深圳）有限公司 | Electronic whiteboard system |
| CN102880356A (en) * | 2012-09-13 | 2013-01-16 | 福州锐达数码科技有限公司 | Method for realizing dual-pen writing based on electronic white board |
| CN103500017A (en) * | 2013-09-17 | 2014-01-08 | 锐达互动科技股份有限公司 | Multi-pen recognition and tracking method for photoelectric interaction module |
-
2014
- 2014-04-25 CN CN201410171764.7A patent/CN103941872B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3801741A (en) * | 1971-04-30 | 1974-04-02 | Image Analysing Computers Ltd | Feature selection in image analysis |
| CN102109929A (en) * | 2009-12-28 | 2011-06-29 | 鸿富锦精密工业（深圳）有限公司 | Electronic whiteboard system |
| CN102880356A (en) * | 2012-09-13 | 2013-01-16 | 福州锐达数码科技有限公司 | Method for realizing dual-pen writing based on electronic white board |
| CN103500017A (en) * | 2013-09-17 | 2014-01-08 | 锐达互动科技股份有限公司 | Multi-pen recognition and tracking method for photoelectric interaction module |
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