CN103500017B - A kind of many of photoelectricity interaction module identifies and tracking - Google Patents
A kind of many of photoelectricity interaction module identifies and tracking Download PDFInfo
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- CN103500017B CN103500017B CN201310425012.4A CN201310425012A CN103500017B CN 103500017 B CN103500017 B CN 103500017B CN 201310425012 A CN201310425012 A CN 201310425012A CN 103500017 B CN103500017 B CN 103500017B
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Abstract
The invention provides a kind of many of photoelectricity interaction module to identify and tracking, it is achieved by a luminaire (photoelectric pen) in the unit interval the brightest secretly, and received image by video input apparatus (photographic head).The bright dark number of times and the order that receive according to video input apparatus judge whether it is this luminaire, the present invention can identify the luminaire of customization, can distinguish different photoelectric pens as applied in blank field, a button etc., to realize double pen, many writing functions；Owing to photovoltaic is affected relatively big by external light source, and external light source is the most all constant visible ray or irregular flashes, and therefore this invention can have the interference of more anti-ambient light.It addition, the present invention the most singly identifies the light source that equipment sends, moreover it is possible to effectively photoelectric pen is carried out tracking during writing movements, effectively eliminates miscellaneous point, interference, and lack when writing and follow the tracks of string pen, the even problem such as pen caused.
Description
Technical field
The present invention relates to computer software technical field, particularly relate to a kind of many of photoelectricity interaction module identification
And tracking.
Background technology
Along with developing rapidly of computer, create the projection module of many photoelectricity series products, and with light phase
The problems such as the product closed often is affected by external visible ray, causes hop, even pen, string pen cause
Experience or defect functionally.Due to extraneous visible ray impact, the equipment None-identified receiving light goes out
It is the light that sends of what luminaire, the equipment receiving light the most sometimes can be caused cannot to realize accordingly
Function.The present invention can effectively distinguish light source by the technology of pumped FIR laser, and carries out movement locus
Follow the tracks of to reduce external light source to Consumer's Experience or the impact of product function.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of many of photoelectricity interaction module to identify and follow the tracks of
Method, the present invention light source that monoenergetic identification equipment does not sends, moreover it is possible to effectively photoelectric pen is carried out writing movements
Time tracking, effectively eliminate miscellaneous point, interference, and lack when writing follow the tracks of cause string pen, company
The problems such as pen.
The present invention is achieved in that a kind of many of photoelectricity interaction module identifies and tracking, including such as
Lower step:
Step 1, a photoelectric pen are bright secretly sends hot spot, by one video input apparatus receive photoelectric pen each time
Image under between；
When step 2, currently received image have hot spot, then process currently received image, find out image
On meet size, brightness value, RGB component value exceed the hot spot of pre-set threshold value in described photoelectric pen, and
The information obtaining hot spot preserves；
Step 3, due to obtain hot spot have area, in photoelectric pen writing process produce hot spot
It it is kinestate；According to those characteristics, hot spot is carried out classifying and numbering, set up the hot spot collection of difference numbering
Close, the set in different numberings exists the information of the hot spot that normal photoelectric pen sends, outside also having
The information of the hot spot of boundary's interference light；
Step 4, information to the hot spot being currently received, with the numbered hot spot collection preserved before
Conjunction is circulated contrast；The information of this hot spot is the light speckle of at least 1；Whether deposit in hot spot set
Point more than 2 is whether to have 1 in same category hot spot, or hot spot set with the information of hot spot
The information of individual point and hot spot is to there is not a little information with hot spot in same category hot spot, or hot spot set to be
Same category hot spot, judges respectively；And the information of the hot spot after will determine that belongs to generic volume
Number hot spot set in；
Step 5, the information of all hot spots searched under the hot spot set of each numbering, find out light in set
Speckle number reaches the hot spot set of predefined one group of length comparing character in photoelectric pen；This compares character
For the pumped FIR laser of photoelectric pen, and judge the sequence that the information of the hot spot under the hot spot set of this numbering is combined into
Whether compare character equal to described；It is, then by the information of the hot spot under the hot spot set of this numbering, i.e.
The hot spot which kind of corresponding photoelectric pen sends can be concluded；No, then continue step 4；
When the information of the hot spot under step 6, the hot spot set numbered preserves, fill up hot spot set when meeting
After the data volume constituted, when being further filled with data, to first discard the information of the hot spot preserved the earliest, then add
Enter the information of new hot spot.
Present invention have the advantage that the present invention passes through frequency in a luminaire (photoelectric pen) unit interval
Numerous bright secretly, and received image by video input apparatus (photographic head).Receive according to video input apparatus
Bright dark number of times and order judge whether it is this luminaire, the present invention can identify the luminescence of customization
Equipment, can distinguish different photoelectric pens as applied in blank field, a button etc., to realize double pen,
Many writing functions；Owing to photovoltaic is affected relatively big by external light source, and external light source is the most all permanent
Fixed visible ray or irregular flash, therefore this invention can have the interference of more anti-ambient light.Separately
Outward, the present invention the most singly identifies the light source that equipment sends, moreover it is possible to when effectively photoelectric pen being carried out writing movements
Tracking, effectively eliminate miscellaneous point, interference, and lack when writing and follow the tracks of string pen, the even pen caused
Etc. problem.
Accompanying drawing explanation
The method flow schematic diagram of Fig. 1 present invention.
Fig. 2 is the schematic diagram that the information of hot spot of the present invention stores the hot spot set of numbering.
Fig. 3 is in the present invention to be same class to there is the information of the point of more than 2 and hot spot in hot spot set
The judgement schematic diagram of the embodiment of other hot spot.
The schematic diagram of several collating sequences correct in the hot spot set of Fig. 4 numbering.
The schematic diagram of the collating sequence of mistake in the hot spot set of Fig. 5 numbering.
Detailed description of the invention
Referring to shown in Fig. 1 and Fig. 5, the present invention is that a kind of many of photoelectricity interaction module identifies and track side
Method, comprises the steps:
Step 1, a photoelectric pen are bright secretly sends hot spot, by one video input apparatus receive photoelectric pen each time
Image under between；
When step 2, currently received image have hot spot, then process currently received image, find out image
On meet size, brightness value, RGB component value exceed in described photoelectric pen the hot spot of pre-set threshold value (i.e.
This threshold value is a kind of hot spot pre-set in photoelectric pen；The size of this hot spot, brightness value, RGB divide
Value is fixing), and the information obtaining hot spot carries out preserving (as shown in Figure 2)；Described hot spot
Information includes: spot center point coordinates, facula area, the width of hot spot and height；
Step 3, due to obtain hot spot have area, in photoelectric pen writing process produce hot spot
It it is kinestate；According to those characteristics, hot spot is carried out classifying and numbering, set up the hot spot collection of difference numbering
Close, the set of different numberings exists the information of the hot spot that normal photoelectric pen sends, also can have the external world
The information of the hot spot of interference light；
Step 4, information to the hot spot being currently received, with the numbered hot spot collection preserved before
Conjunction is circulated contrast；The information of this hot spot is the light speckle of at least 1；Whether deposit in hot spot set
Point more than 2 is whether to have 1 in same category hot spot, or hot spot set with the information of hot spot
The information of individual point and hot spot is to there is not a little information with hot spot in same category hot spot, or hot spot set to be
Same category hot spot, judges respectively；And the information of the hot spot after will determine that belongs to generic volume
Number hot spot set in；
Step 5, the information of all hot spots searched under the hot spot set of each numbering, find out light in set
Speckle number reaches the hot spot set of predefined one group of length comparing character in photoelectric pen；This compares character
For the pumped FIR laser of photoelectric pen, and judge the sequence that the information of the hot spot under the hot spot set of this numbering is combined into
Whether compare character equal to described；It is, then by the information of the hot spot under the hot spot set of this numbering, i.e.
The hot spot which kind of corresponding photoelectric pen sends can be concluded；No, then continue step 4.
In the present invention, described step 4 farther includes:
Step 41, a hot spot set numbered exist the point of more than 2, the then hot spot preserved before
Define the point set of movement locus, concentrate any two point composition a plurality of directly with the point forming track
Line, described a plurality of straight line is 1～M bar, and M is the integer more than 1；Obtain currently received hot spot,
The hot spot received is 1～N number of, and N is the integer more than 1, first takes out a hot spot of any one reception,
Obtain this hot spot distance to each bar, and select the straight line one that distance is minimum, obtain this straight line one place
The numbering of hot spot set, carries out the 2nd checking, by the described hot spot 1～N newly entered after getting straight line one
Calculate the distance of described straight line one respectively, select and newly enter hot spot with straight line one apart from minimum；Finally sentence
Whether the disconnected minimum hot spot newly entering hot spot and described taking-up selected is same smooth speckle, same
Then the point for currently received hot spot have found the track that can match, and then carries out the checking of the 3rd time: sentence
Disconnected currently received smooth speckle whether on the movement locus of photoelectric pen, i.e. judge that movement locus is up-to-date 2
Point, these 2 up-to-date points are last 2 points forming track；Predict the direction vector of these 2 points
On point of symmetry the area of last point is given to this point of symmetry；This last point is for the most finally to return
Belong to the point in the hot spot set of this track；The hot spot obtained after judging front 2 checkings is the most right with described
The area claiming point also exists common factor, is that the current hot spot received is on this movement locus, will be current
The information of hot spot belongs in the hot spot set of numbering corresponding to this movement locus, the current light otherwise received
Speckle is not on this track；
Step 41 is: when judging the ownership of new hot spot, because hot spot new when capture image can
Being 1, it is also possible to be N number of, then before form some movement locus (is i.e. above hot spot
The when that the queue of set having 2 or more than 2 to put), first confirm n-th new hot spot (0-N
Being circulated, each is the step for hot spot is carried out) from the closer (straight line here of any straight line
Refer to the straight line that in each queue, any 2 points are formed, find out new hot spot from nearest direct), recently
Be i.e. set to straight line one, it is thus achieved that the numbering of the hot spot set of this straight line one, carry out the most again the 2nd time checking,
Here checking refers to this straight line one to calculate with all hot spot points newly entered, and sees which point is from this
Bar straight line one recently, then judges that the most unanimously (n-th hot spot point has calculated this to this result of 2 times
Point is nearest from this straight line, and it is nearest from oneself that this straight line has authenticated to m-th light speckle in turn,
Judge that whether N is equal to M), if unanimously, this hot spot just mates the queue at this straight line place, then
Carry out the 3rd checking again, the 3rd time and tracking relevant, it is judged that whether this point in the motion of this light pen
On track, i.e. judge that point of symmetry on the direction vector of these 2 points of 2 point predictions up-to-date in queue are
Area of that new point gives these point of symmetry, and (here up-to-date refers to the last of last ownership
That point), whether the hot spot obtained after then judging front 2 checkings exists common factor with described point of symmetry；
It is to complete the 3rd checking, only by these 3 times checkings, be only real hot spot and mated, then
Proceed to coding waveforms judge and the simulation process of data.(such as one embodiment: as it is shown on figure 3, A,
B 2 is 2 points up-to-date in the queue of hot spot set, and 2 points are formed to be had successively, and A compares B
Early, so straight line is also directive, C point is exactly that we calculate 2 direction vectors of A, B
On point；The region that then C point processes, the spot size of actually B point, C point is that we envision
Position, then the spot size of B point is given C point, the hot spot that the expression of D point is newly entered does not matches
Queue, the facula area of the region representation D at D point, it is judged that whether two regions of C, D have friendship
Collection, has, and thinks that D is in the queue at A, B point place.If do not occured simultaneously at C, then which
Judgement carry out once again at B point, if still do not had, then it is assumed that this hot spot newly entered is not one
In the queue of individual hot spot set；The most not on the movement locus of this luminaire).
Step 42, judged the hot spot set of numbering exists the situation of 2 points after, if not finding
The track that the current hot spot that receives is corresponding, then continue to judge to only exist 1 point in the hot spot set of numbering
Set, i.e. judges that with the surface area of the current hot spot received whether whether the surface area of point in gathering
Exist and occur simultaneously, be that current hot spot in this region, is belonged to the light of this numbering by the current hot spot received
In speckle set, otherwise enter step 43；
If the current hot spot that step 43 receives the most does not finds in step 41 and 42 and to match with it
Track, or some set do not have similar point, the most current hot spot is respectively put into and is not put into light
In the hot spot set of the empty numbering of speckle, form new numbering；
Step 44, circulate the numbering set of all of hot spot, and to the collection of the information currently not inserting hot spot
Conjunction fills into an index point upspring；This index point represents and does not meet in hot spot set under state at that time
The information of the current hot spot received.
Described step 5 farther includes: in the information having hot spot belongs to the hot spot set of numbering, then
The most corresponding mark having bright spot of the information of 1 hot spot, this has the mark of bright spot to represent with 1, without bright
The mark of point represents with 0；Described pumped FIR laser is the comparison character of 0 and 1 composition, and compares character length
It is the integer more than 1 for L, described L；Then search for all hot spots under the hot spot set of each numbering
Information, finds out the hot spot set that hot spot number in set reaches the numbering of described length L comparing character,
The mark 0 or 1 of the bright spot that the information of the hot spot under the hot spot set of this numbering is corresponding is carried out with random order
Arrangement obtains a sequence, as long as the sequence of arrangement is as pumped FIR laser；Then by the hot spot set of this numbering
Under the information of hot spot, can conclude that hot spot which kind of corresponding photoelectric pen sends is (such as: bright having
Point mark be set to 1, the mark without bright spot is set to 0, it is assumed that the pumped FIR laser of photoelectric pen be [1,1,1,
0], if the information existence of the lower hot spot of a numbering set 31 and 10, no matter 0 and 1 be with
Which kind of is tactic, all thinks that it defines pumped FIR laser (as shown in Figure 4), if less than 4 light
The information of speckle is then skipped after waiting the information filling up 4 hot spots and is carried out judging pumped FIR laser again, meets existence 4
Then start to judge pumped FIR laser during the information of individual hot spot, if the number of 1 and 0 is not to (as shown in Figure 5),
Then think and be formed without coding, be formed without the numbering set of coding, if there are 4 information, then
Information empties, and abandons).
When the information of the hot spot under step 6, the hot spot set numbered preserves, as in figure 2 it is shown, when meeting
Fill up after the data volume that hot spot set is constituted (if the data volume of hot spot set is 4), be further filled with data
Time, the information that will first discard the hot spot preserved the earliest (is first hot spot in hot spot set the earliest
Information), add the information of new hot spot.(such as: the data storage of hot spot set is considered one
The principle of individual queue (certainly also have other form) queue is exactly first in first out, such as our volume
Code is bright 3 dark 1 (set bright spot as 1, be 0 time dark), and we just set the size of this queue as 4,
After queue is piled, it is judged that whether the order of queue is 1110, if it is, judge this light pen
Falling on blank, then as the motion of light pen, a point of every time coming in, when this Point matching is to this
After Bi, we remove the 1 of foremost according to queued discipline, add up-to-date point (at this time team backmost
Row are likely to be formed 1101 these codings), as long as queue meets the situation of 1 dim spot of 3 bright spots
(wave as sinusoidal) we to be considered as coding be normal, this point carries out processing a some mould at once
Draw up.)
After determining the hot spot that corresponding luminaire sends；Corresponding function is realized (such as photoelectricity further according to equipment
Keypress function, the writing function etc. of photoelectric pen).
The foregoing is only presently preferred embodiments of the present invention, all according to scope of the present invention patent done equal
Deng change and modification, the covering scope of the present invention all should be belonged to.
Claims (4)
1. many of a photoelectricity interaction module identifies and tracking, it is characterised in that include walking as follows
Rapid:
Step 1, a photoelectric pen are bright secretly sends hot spot, by one video input apparatus receive photoelectric pen each time
Image under between；
When step 2, currently received image have hot spot, then process currently received image, find out image
On meet size, brightness value, RGB component value exceed the hot spot of pre-set threshold value in described photoelectric pen, and
The information obtaining hot spot preserves；
Step 3, due to obtain hot spot have area, in photoelectric pen writing process produce hot spot
It it is kinestate；Those characteristics of kinestate according to facula area and hot spot, carry out classification and compile hot spot
Number, set up the hot spot set of difference numbering, the set of different numberings exists what normal photoelectric pen sent
The information of hot spot, also can have the information of the hot spot of external interference light；
Step 4, exceed the information of the hot spot of pre-set threshold value in described photoelectric pen to be currently received, with
The numbered hot spot set before preserved is circulated contrast；What this received exceedes described photoelectric pen
The information of the hot spot of middle pre-set threshold value is the light speckle of at least 1；Whether 2 are had in hot spot set
The information of individual above point and hot spot be whether same category hot spot, or hot spot set exist 1 point with
The information of hot spot is that to there is not a little information with hot spot in same category hot spot, or hot spot set be same class
Other hot spot, judges respectively；And the information of the hot spot after will determine that belongs to the light of generic numbering
In speckle set；
Step 5, the information of all hot spots searched under the hot spot set of each numbering, find out light in set
Speckle number reaches the hot spot set of predefined one group of length comparing character；This compares character is photoelectric pen
Pumped FIR laser, and judge reach to compare the information of the hot spot under the hot spot set of this numbering of the length of character
Whether the sequence being combined into compares character equal to described；Be, then should by reach to compare the length of character
The information of the hot spot under the hot spot set of numbering, can conclude the light which kind of corresponding photoelectric pen sends
Speckle；No, then continue step 4；
When the information of the hot spot under step 6, the hot spot set numbered preserves, fill up hot spot set when meeting
After the data volume constituted, when being further filled with data, to first discard the information of the hot spot preserved the earliest, then add
Enter the information of new hot spot.
A kind of many of photoelectricity interaction module the most according to claim 1 identifies and tracking, its
Be characterised by: the information of described hot spot includes: spot center point coordinates, facula area, the width of hot spot and
High.
A kind of many of photoelectricity interaction module the most according to claim 1 identifies and tracking, its
It is characterised by: described step 4 farther includes:
Step 41, a hot spot set numbered exist the point of more than 2, the then hot spot preserved before
Define the point set of movement locus, concentrate any two point composition a plurality of with the point forming movement locus
Straight line, described a plurality of straight line is 1～M bar, and M is the integer more than 1；Obtain currently received hot spot,
The hot spot received is 1～N number of, and N is the integer more than 1, first takes out a hot spot of any one reception,
Obtain this hot spot distance to each bar straight line, and select the straight line one that distance is minimum, obtain this straight line one
The numbering of place hot spot set, carries out the 2nd checking, by described currently received after getting straight line one
The hot spot 1～N newly entered calculates the distance of described straight line one respectively, selects with straight line one apart from minimum
Newly enter hot spot；Finally judge whether the minimum hot spot newly entering hot spot and described taking-up selected is same
Individual light speckle, same, the point for currently received hot spot have found the movement locus that can match, then
Carry out the checking of the 3rd time: judge currently received smooth speckle whether on the movement locus of photoelectric pen, i.e.
Judging 2 points that movement locus is up-to-date, these 2 up-to-date points are last 2 points forming movement locus；
Predict that the point of symmetry on the direction vector of these 2 points are given to this area of last 2 points symmetrical
Point；These last 2 points are the hot spot collection the most finally belonging to the movement locus that these last 2 points are formed
Point in conjunction；After judging front 2 checkings, the hot spot that obtains whether area with described point of symmetry also exists friendship
Collection, is that the current hot spot received is on the movement locus that these last 2 points are formed, by current light
The information of speckle belongs in the hot spot set of numbering corresponding to movement locus that these last 2 points are formed, no
The current hot spot then received is not on the movement locus that these last 2 points are formed；
Step 42, judge the hot spot set of the numbering that movement locus that these last 2 points are formed is corresponding
After the situation of middle 2 points of existence, if not finding the movement locus that the current hot spot received is corresponding, then continue
The hot spot set of the numbering that the continuous movement locus judging that these last 2 points are formed is corresponding only exists 1 point
Set, i.e. judge that the surface area of the point in the set surface area whether with the current hot spot received is
No existence occurs simultaneously, and is, in the surface area of the current hot spot received point in this set, by current light
Speckle belongs in the hot spot set of numbering corresponding to movement locus, otherwise enters step 43；
If the current hot spot that step 43 receives the most does not finds in step 41 and 42 and to match with it
Movement locus, or some set do not have similar point, the most current hot spot is put into and be not put into light
In the hot spot set of the empty numbering of speckle, form new numbering；
Step 44, circulate the numbering set of all of hot spot, and to the collection of the information currently not inserting hot spot
Conjunction fills into an index point upspring；This index point represents and does not meet in hot spot set under state at that time
The information of the current hot spot received.
A kind of many of photoelectricity interaction module the most according to claim 1 identifies and tracking, its
It is characterised by: described step 5 farther includes: belong to the hot spot set of numbering in the information having hot spot
In, then the information of 1 hot spot is a corresponding mark having bright spot, and this has the mark of bright spot to represent with 1,
Mark without bright spot represents with 0；Described pumped FIR laser is the character string comparison character of 0 and 1 composition, and word
It is L that symbol string compares character length, and described L is the integer more than 1；Then search for the hot spot collection of each numbering
The information of all hot spots under Heing, finds out hot spot number in set and reaches the length of described character string comparison character
The hot spot set of the numbering of degree L, the information of the hot spot under the hot spot set of the numbering of this length L is corresponding
The mark 0 or 1 of bright spot carry out arrangement with random order and obtain a sequence, if the sequence of arrangement and light
As coding；Then by the information of the hot spot under the hot spot set of the numbering of this length L, can conclude
It it is the hot spot that sends of which kind of corresponding photoelectric pen.
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| CN201310425012.4A CN103500017B (en) | 2013-09-17 | 2013-09-17 | A kind of many of photoelectricity interaction module identifies and tracking |
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| CN201310425012.4A CN103500017B (en) | 2013-09-17 | 2013-09-17 | A kind of many of photoelectricity interaction module identifies and tracking |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103941872B (en) * | 2014-04-25 | 2017-02-15 | 锐达互动科技股份有限公司 | Interactive projection method for achieving writing with two pens and writing with two pens approaching to each other infinitely |
| CN103941924B (en) * | 2014-04-25 | 2016-09-14 | 锐达互动科技股份有限公司 | A kind of interaction method realizing infrared light encoding and decoding |
| CN103955318B (en) * | 2014-04-30 | 2016-11-16 | 锐达互动科技股份有限公司 | Double pens are identified by photoelectricity interaction module and double pen near time differentiating method |
| CN107102781A (en) * | 2017-04-17 | 2017-08-29 | 华东师范大学 | A kind of tagging stylus and multipoint touch interactive system |
| CN107727394A (en) * | 2017-12-01 | 2018-02-23 | 华能国际电力股份有限公司 | Method for acquiring gear box tooth number of wind turbine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004584A (en) * | 2010-10-28 | 2011-04-06 | 广东威创视讯科技股份有限公司 | Method and device of positioning and displaying active pen |
| CN103021304A (en) * | 2012-08-01 | 2013-04-03 | 顿丽波 | Laser overview system and operation method thereof |
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2013
- 2013-09-17 CN CN201310425012.4A patent/CN103500017B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004584A (en) * | 2010-10-28 | 2011-04-06 | 广东威创视讯科技股份有限公司 | Method and device of positioning and displaying active pen |
| CN103021304A (en) * | 2012-08-01 | 2013-04-03 | 顿丽波 | Laser overview system and operation method thereof |
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