CN103955318A - Method for identifying two pens in photoelectric interaction module and distinguishing two pens getting close to each other - Google Patents
Method for identifying two pens in photoelectric interaction module and distinguishing two pens getting close to each other Download PDFInfo
- Publication number
- CN103955318A CN103955318A CN201410179192.7A CN201410179192A CN103955318A CN 103955318 A CN103955318 A CN 103955318A CN 201410179192 A CN201410179192 A CN 201410179192A CN 103955318 A CN103955318 A CN 103955318A
- Authority
- CN
- China
- Prior art keywords
- pen
- pens
- hot spot
- photoelectric
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The invention provides a method for two pens in a photoelectric interaction module and distinguishing the two pens getting close to each other. The photoelectric interaction module is provided with at least two cameras; light filters are mounted on the cameras. The method comprises the steps: 1, providing at least two photoelectric pens which can respectively emit light with different wavelengths, wherein waveform light can be emitted according to a time interval on the basis of a set waveform and darkness; 2, capturing the light emitted by the two photoelectric pens by the cameras with the corresponding light filters; 3, respectively acquiring light spot data captured by the two lenses; 4, after the light spot data captured by the lenses are acquired, distinguishing interference from other light rays according to the bright and dark waveforms of different pens; 5, when the two pens get close to each other for writing, respectively obtaining light spots close to the two photoelectric pens by the two lenses respectively, and respectively screening current frames obtained by a main lens and an auxiliary lens. The method can effectively track the writing motion of the photoelectric pens, so that noise and interference are effectively removed, and the problems of pen stringing, handwriting connection and the like during writing are solved.
Description
Technical field
The present invention relates to computer software technical field, relate in particular in the interactive module of a kind of photoelectricity, two pens are identified and two pen near time differentiating method.
Background technology
Along with developing rapidly of computing machine, produced the projection module of many photoelectricity series products, general projection module wants to realize at 2 all to be needed to realize by the mode of a tracking, and the mode that point is followed the tracks of will produce erroneous judgement at 2 pens when writing, produce phenomenons such as jumping a string pen, 2 of the vacations that industry that Here it is is often said, and the product relevant to light tends to be subject to the impact of external visible ray, cause hop, connect pen, the problems such as string pen cause the defect in experience or function.Due to extraneous visible ray impact, it is the light what luminaire sends that the equipment None-identified of reception light goes out, and so sometimes can cause the equipment that receives light cannot realize corresponding function.Present patent application file can effectively be distinguished light source, and the tracking of carrying out movement locus is to reduce the impact of external light source on user's experience or product function, by 2 camera lenses, receives respectively different-waveband light source, realizes a two function truly.
Summary of the invention
The technical problem to be solved in the present invention, be to provide a kind of photoelectricity interaction module method of location automatically, the present invention has not singly identified the light source that equipment sends, identification in the time of can also effectively carrying out writing movements to photoelectric pen, effectively removed assorted point, disturb, and lack when writing and follow the tracks of the string pen that causes, connect the problems such as pen.
The present invention be achieved in that in the interactive module of a kind of photoelectricity, two pens are identified and two pen near time differentiating method, the interactive module of described photoelectricity has at least two cameras, optical filter is installed on camera, and two optical filters can be distinguished the light of two kinds of wavelength of elimination;
Described method comprises the steps:
Step 1, at least two photoelectric pens, two photoelectric pens send respectively the light of different wave length, and according to the waveform of setting, and brightly secretly by a time interval, send waveform light;
Step 2, be mounted the light that the camera of respective filter sends two photoelectric pens and caught;
Step 3, the hot spot data that respectively two camera lenses captured are obtained, characteristic due to optical filter and pen, a camera lens can only capture the light that a photoelectric pen sends, another camera lens can only capture the light that another photoelectric pen sends, two camera lenses can two group data separately, be regarded respectively two single-lens processing;
Step 4, obtain after the hot spot data that each camera lens catches, then according to the bright dark waveforms of different pen, distinguish the interference of other light;
Step 5, two photoelectric pens are near writing, two camera lenses can obtain respectively two hot spots that photoelectric pen is close, two photoelectric pens are divided into chief editor and secondary pen, the camera lens of catching chief editor is main lens, the camera lens of catching secondary pen is secondary mirror head, present frame to main lens and the acquisition of secondary mirror head screens respectively, the frame obtaining in main lens has two hot spots against very near, the hot spot obtaining according to hot spot common factor mode can be caught up with frame data and be produced while occuring simultaneously, pass through filbtercharacteristic, the area of two points of judgement, gets rid of the hot spot that area is little; Secondary mirror head also carries out same eliminating, thus complete two pens near time distinguish.
Further, described hot spot data comprise facula position, area, and length and width information.
Further, at photoelectric pen, write from the close place of lens location, because the effect of optical filter is different, can produce the hot spot that main lens can be seen secondary pen, secondary mirror head can be seen chief editor's hot spot, at this moment need to get rid of by step 4 hot spot of interference.
Further, step 4 is specially: when photoelectric pen is started to write, first wait for the once complete waveform of pen of reception, the data of the corresponding frame of a ripple in waveform, the point getting in each frame is screened, the track moving according to photoelectric pen and the characteristic of camera lens, whether the hot spot of spot tracks consecutive frame in every frame data that judgement pen produces there is common factor, be, there is no external interference point, if there is not common factor, remove the external interference point that does not have common factor.
Tool of the present invention has the following advantages: the present invention is bright dark frequently in the unit interval by photoelectric pen (luminaire), and receives image by camera (video input apparatus).The bright dark number of times of receiving according to video input apparatus and order judge whether it is this luminaire, the present invention can identify the luminaire of customization, as be applied in blank field and can distinguish different photoelectric pens, button etc., according to photoelectric pen, select dissimilar light again, and add corresponding supporting optical filter to camera lens, that camera lens can only be seen the light that the pen of corresponding light wave type sends, (as: camera lens that can see infrared light can only be seen a light source sending of sending out infrared light, a light sending of sending out other visible rays cannot be in sight) to realize true dual-stylus writing function, due to photovoltaic, affected by external light source larger, and external light source is all much constant visible ray or irregular flashing, so this invention can have the interference of more anti-ambient light.In addition, the present invention has not singly identified the light source that equipment sends, can also be effectively the differentiation near carry out writing movements time to photoelectric pen, effectively removed assorted point, disturb, and lack when writing and follow the tracks of the string pen that causes, connect the problems such as pen.
Accompanying drawing explanation
Fig. 1 is the inventive method schematic flow sheet.
Fig. 2 is the schematic diagram that facula information of the present invention stores the hot spot set of numbering into.
Fig. 3 is to there is the judgement schematic diagram of the embodiment that 2 above points and facula information be same classification hot spot in hot spot set in the present invention.
The schematic diagram of correct several collating sequences in the hot spot set of Fig. 4 numbering.
The schematic diagram of wrong collating sequence in the hot spot set of Fig. 5 numbering.
Embodiment
Refer to shown in Fig. 1 to Fig. 5, in the interactive module of a kind of photoelectricity of the present invention, two pens are identified and two pen near time differentiating method, the interactive module of described photoelectricity has at least two cameras, and optical filter is installed on camera, and two optical filters can be distinguished the light of two kinds of wavelength of elimination;
Described method comprises the steps:
Step 1, at least two photoelectric pens, two photoelectric pens send respectively the light of different wave length, and according to the waveform of setting, and brightly secretly by a time interval, send waveform light;
Step 2, be mounted the light that the camera of respective filter sends two photoelectric pens and caught; This has just formed the interactive module of photoelectricity can realize the very condition of two, and a camera lens can only capture the hot spot of corresponding luminous pen, and cannot catch the hot spot of another pen;
Step 3, the hot spot data that respectively two camera lenses captured are obtained, characteristic due to optical filter and pen, a camera lens can only capture the light that a photoelectric pen sends, another camera lens can only capture the light that another photoelectric pen sends, two camera lenses can two group data separately, be regarded respectively two single-lens processing;
Step 4, obtain after the hot spot data that each camera lens catches, then according to the bright dark waveforms of different pen, distinguish the interference of other light; Described hot spot data comprise facula position, area, and length and width information;
Step 5, two photoelectric pens are near writing, two camera lenses can obtain respectively two hot spots that photoelectric pen is close, two photoelectric pens are divided into chief editor and secondary pen, the camera lens of catching chief editor is main lens, the camera lens of catching secondary pen is secondary mirror head, present frame to main lens and the acquisition of secondary mirror head screens respectively, the frame obtaining in main lens has two hot spots against very near, the hot spot obtaining according to hot spot common factor mode can be caught up with frame data and be produced while occuring simultaneously, by filbtercharacteristic (can distinguish the light of 2 kinds of wavelength of elimination), be presumed to visible ray and infrared light here, the area of two points of judgement, (when the luminous energy of secondary pen is seen by main lens through the optical filter of main lens, main lens also can only be seen a faint small light spot) the little hot spot of area is got rid of, secondary mirror head also carries out same eliminating, thus complete two pens near time distinguish.
In the present invention, at photoelectric pen, write from the close place of lens location, because the effect of optical filter is different, can produce the hot spot that main lens can be seen secondary pen, secondary mirror head can be seen chief editor's hot spot, at this moment need to get rid of by step 4 hot spot of interference.
Step 4 is specially: when photoelectric pen is started to write, first wait for the once complete waveform of pen of reception, the data of the corresponding frame of a ripple in waveform, the point getting in each frame is screened, for example chief editor is 3 bright 1 dark mode of operations, when starting to write, first wait for the once complete waveform of pen of reception, as above set chief editor is 3 bright 1 dark, when starting to write for the first time, wait for that camera lens catches the data of 4 frames, again the point getting in this 4 frame is screened, (camera lens can only capture the hot spot of corresponding luminous pen for the track moving according to photoelectric pen and the characteristic of camera lens, and cannot catch the hot spot of another pen, ), whether the hot spot of spot tracks consecutive frame in every frame data that judgement pen produces there is common factor, is, there is no external interference point, if there is not common factor, removes the external interference point that does not have common factor.
In addition, in the present invention, this step 4 also can be in another way, and which is as follows:
Because each camera lens can only be seen the light sending with its pairing photoelectric pen, therefore 2 camera lenses can be regarded as to independently individuality, each camera lens is carried out respectively following steps:
Step 11, the bright hot spot that secretly sends of a photoelectric pen, receive the image of photoelectric pen under each time by a video input apparatus;
When the image of step 12, current reception has hot spot, process the image of current reception, find out and on image, meet size, brightness value, RGB component value and surpass the hot spot of pre-set threshold value in described photoelectric pen (this threshold value is a kind of hot spot setting in advance in photoelectric pen; The size of this hot spot, brightness value, RGB component value are fixed), and the information that obtains hot spot is preserved (as shown in Figure 2); The information of described hot spot comprises: spot center point coordinate, facula area, hot spot wide and high;
Step 13, because the hot spot obtaining has area, the hot spot producing in photoelectric pen writing process is motion state; According to those characteristics, hot spot is carried out to classifying and numbering, set up the hot spot set of different numberings, the facula information that exists normal photoelectric pen to send in the set of different numberings, also can have the facula information of external interference light;
Step 14, to the current facula information receiving, with the numbered hot spot set of preserving the before contrast that circulates; This facula information is the hot spot point of at least 1; To whether there are 2 above point and facula information in hot spot set, are same classification hot spots, or in hot spot set, whether to have 1 point and facula information be same classification hot spot, or in hot spot set, do not exist a little with facula information to be same classification hot spot, to judge respectively; And the facula information after judgement is belonged in the hot spot set of generic numbering;
Step 15, search for all facula information under the hot spot set of each numbering, find out the hot spot set that hot spot number in set reaches the length of predefined one group of compare string in photoelectric pen; This compare string is the light coding of photoelectric pen, and judges whether the sequence that the facula information under the hot spot set of this numbering is combined into equals described compare string; , by the facula information under the hot spot set of this numbering, can conclude the hot spot which kind of corresponding photoelectric pen sends; No, continue step 14.
In the present invention, described step 14 further comprises:
In the hot spot set of step 141, a numbering, there are 2 above points, the hot spot of preserving has formed the point set of movement locus, with the point that forms track, concentrate 2 up-to-date points to form straight line one, these 2 up-to-date points are 2 hot spot points that finally belong in hot spot set, obtain the hot spot of current reception to the distance of this straight line one, and select apart from a minimum straight line two, obtain the numbering of these straight line two place hot spot set, according to the set of these straight line two place hot spots, obtain the hot spot in this set again, point to these straight line two minor increments, whether the point to the hot spot of the point of straight line two minor increments and the current reception of acquisition in checking hot spot set is same, same for the point of the hot spot of current reception has found the track that can match, then carry out the checking of the 3rd time: judge that the hot spot point of current reception is whether on the movement locus of photoelectric pen, judge described 2 up-to-date points, predict that the symmetric points on the direction vector of these 2 points are given to this symmetric points the area of last point, this last point is for finally belonging to before the point in hot spot set, judge whether the hot spot obtaining after front 2 checkings exists common factor with the area of described symmetric points, that the current hot spot of receiving is on this movement locus, current facula information is belonged in the hot spot set of the numbering that this movement locus is corresponding, otherwise the current hot spot of receiving is not on this track,
Step 141 is: while judging the ownership of new hot spot, because new hot spot can be 1 when catching image, also it can be N, then before, form (being when having 2 or 2 above points in the queue of above hot spot set) of some movement locus, (0-N circulates first to confirm N new hot spot, each hot spot carries out this step) from which straight line, closer (the straight line here refers to the straight line that up-to-date in each queue 2 points form, finally belong to 2 hot spot points in hot spot set), that closely enters is made as straight line one, obtain the numbering of the hot spot set of this straight line one, and then verify, here checking just refers to calculates this straight line one and all hot spot points that newly enter, see which point is nearest from this straight line one, then judge that whether consistent (it is nearest from this straight line that N hot spot point calculated this point to this result of 2 times, this straight line has authenticated to M hot spot point conversely from recently own, judge whether N equals M), if consistent, this hot spot just mates the queue at this straight line place, and then carry out the 3rd time and verify, the 3rd time relevant with tracking, judge that this point is whether on the movement locus of this light pen, judge that the symmetric points on the direction vector of these 2 points of 2 point predictions up-to-date in queue give these symmetric points (up-to-date that the last point that refers to last ownership here) the area of that up-to-date point, then judge whether the hot spot obtaining after front 2 checkings exists and occur simultaneously with described symmetric points, be to complete the 3rd checking, only have by these 3 times checkings, be only real hot spot and mated, then proceed to the simulation process of coding waveforms judgement and data.(embodiment for example: as shown in Figure 3, A, 2 of B are 2 points up-to-date in the queue of hot spot set, and 2 points form to be had successively, and A is more Zao than B, and so straight line is also directive, C point is exactly that we calculate A, the point on 2 direction vectors of B; The region that C point is processed, be actually the spot size that B is ordered, C point is the position that we envision, the spot size of then B being ordered is given C point, and D point represents that the hot spot newly enter does not match queue, the facula area of the region representation D at D point place, judgement C, whether two regions of D have common factor, have and think that D is at A, in the queue at B point place.If do not occured simultaneously at C place, the judgement of which is carried out once at B point place again, if still do not had, thinks that this hot spot newly entering is not in the queue of a hot spot set; Not on the movement locus of this luminaire).
Step 142, judged in the hot spot set of numbering and existed after the situation of 2 points, track corresponding to current hot spot of receiving if do not find, continue to judge the set that only has 1 point in the hot spot set of numbering, whether whether the surface area of the point in i.e. judgement set there is common factor with the surface area of the current hot spot of receiving, that the current hot spot received is in this region, current hot spot is belonged in the hot spot set of this numbering, otherwise enter step 143;
If the current hot spot that step 143 is received does not all find the track with its pairing in step 141 and 142, or there is no similar point in some set, directly current hot spot is put into respectively to the hot spot set of the sky numbering of not putting into hot spot point, formed new numbering;
Step 144, circulate the set of hot spot numbering all, and fill into a monumented point of upspringing in the current set of not inserting facula information; This monumented point represents at that time in hot spot set, not meet the current facula information of receiving under state.
Described step 15 further comprises: there iing facula information to belong in the hot spot set of numbering, and the corresponding sign that has bright spot of 1 facula information, this has the sign of bright spot to represent with 1, without the sign of bright spot, with 0, represents, described light is encoded to 0 and 1 compare string forming, and compare string length is L, and described L is greater than 3 integer, search for all facula information under the hot spot set of each numbering, find out the hot spot set of numbering that hot spot number in set reaches the length L of described compare string, the sign 0 or 1 of the bright spot that facula information under the hot spot set of this numbering is corresponding is arranged and is obtained a sequence with random order, as long as the sequence of arranging is encoded the same with light, by the facula information under the hot spot set of this numbering, can conclude that hot spot which kind of corresponding photoelectric pen sends (for example: there being the sign of bright spot to be made as 1, sign without bright spot is made as 0, the light coding of supposing photoelectric pen is [1, 1, 1, 0], if the facula information under a numbering set exists 31 and 10, no matter 0 and 1 is tactic with which kind of, all think that it has formed light coding (as shown in Figure 4), if less than 4 facula information, skip after 4 facula information are filled up in wait and judge again light coding, while meeting 4 facula information of existence, start to judge light coding, if 1 and 0 number is not to (as shown in Figure 5), think and do not form coding, do not form the numbering set of coding, if there are 4 information, information is emptied, abandon).
When the facula information under the hot spot set of step 16, numbering is preserved, as shown in Figure 2, after meeting the data volume of filling up hot spot set formation (if the data volume of hot spot set is 4), while inserting data again, to first discard the facula information (being the earliest first facula information in hot spot set) of preserving the earliest, then add new facula information.(for example: the principle of the data storage of hot spot set being thought to a queue (certainly also having other form) queue is exactly first in first out, such as our coding is that bright 3 dark 1 (establishing bright spot is 1, when dark, be 0), we are 4 with regard to establishing the size of this queue, after queue is piled, whether the order that judges queue is 1110, if, judge that this light pen has dropped on blank, then along with the motion of light pen, the point of at every turn coming in, after this point matches this pen, we remove top 1 according to queued discipline, in the end face adds up-to-date point (at this time may form 1101 these codings in queue), as long as meet in queue 1 dim spot of 3 bright spots situation (as sinusoidal waveform shape) we just think that coding is normal, this point is processed a simulation is gone out at once.)
Determine after the hot spot that corresponding luminaire sends; According to equipment, realize corresponding function (as photoelectric pen keypress function, the writing function of photoelectric pen etc.) again.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. in the interactive module of photoelectricity, two pens are identified and two pen near time a differentiating method, it is characterized in that: the interactive module of described photoelectricity has at least two cameras, and optical filter is installed on camera, and two optical filters can be distinguished the light of two kinds of wavelength of elimination;
Described method comprises the steps:
Step 1, at least two photoelectric pens, two photoelectric pens send respectively the light of different wave length, and according to the waveform of setting, and brightly secretly by a time interval, send waveform light;
Step 2, be mounted the light that the camera of respective filter sends two photoelectric pens and caught;
Step 3, the hot spot data that respectively two camera lenses captured are obtained, characteristic due to optical filter and pen, a camera lens can only capture the light that a photoelectric pen sends, another camera lens can only capture the light that another photoelectric pen sends, two camera lenses can two group data separately, be regarded respectively two single-lens processing;
Step 4, obtain after the hot spot data that each camera lens catches, then according to the bright dark waveforms of different pen, distinguish the interference of other light;
Step 5, two photoelectric pens are near writing, two camera lenses can obtain respectively two hot spots that photoelectric pen is close, two photoelectric pens are divided into chief editor and secondary pen, the camera lens of catching chief editor is main lens, the camera lens of catching secondary pen is secondary mirror head, present frame to main lens and the acquisition of secondary mirror head screens respectively, the frame obtaining in main lens has two hot spots against very near, the hot spot obtaining according to hot spot common factor mode can be caught up with frame data and be produced while occuring simultaneously, pass through filbtercharacteristic, the area of two points of judgement, gets rid of the hot spot that area is little; Secondary mirror head also carries out same eliminating, thus complete two pens near time distinguish.
2. in the interactive module of photoelectricity according to claim 1, two pens are identified and two pen near time differentiating method, it is characterized in that: described hot spot data comprise facula position area, and length and width information.
3. in the interactive module of photoelectricity according to claim 1, two pens are identified and two pen near time differentiating method, it is characterized in that: at photoelectric pen, write from the close place of lens location, because the effect of optical filter is different, can produce the hot spot that main lens can be seen secondary pen, secondary mirror head can be seen chief editor's hot spot, at this moment need to get rid of by step 4 hot spot of interference.
4. in the interactive module of photoelectricity according to claim 1, two pens are identified and two pen near time differentiating method, it is characterized in that: step 4 is specially: when photoelectric pen is started to write, first wait for the once complete waveform of pen of reception, the data of the corresponding frame of a ripple in waveform, the point getting in each frame is screened, the track moving according to photoelectric pen and the characteristic of camera lens, whether the hot spot of spot tracks consecutive frame in every frame data that judgement pen produces there is common factor, be, there is no external interference point, if there is not common factor, remove the external interference point that does not have common factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179192.7A CN103955318B (en) | 2014-04-30 | 2014-04-30 | Double pens are identified by photoelectricity interaction module and double pen near time differentiating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179192.7A CN103955318B (en) | 2014-04-30 | 2014-04-30 | Double pens are identified by photoelectricity interaction module and double pen near time differentiating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103955318A true CN103955318A (en) | 2014-07-30 |
| CN103955318B CN103955318B (en) | 2016-11-16 |
Family
ID=51332599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410179192.7A Expired - Fee Related CN103955318B (en) | 2014-04-30 | 2014-04-30 | Double pens are identified by photoelectricity interaction module and double pen near time differentiating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103955318B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105653025A (en) * | 2015-12-22 | 2016-06-08 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN106648171A (en) * | 2016-12-08 | 2017-05-10 | 南京仁光电子科技有限公司 | Interactive system and method based on writing pens |
| CN112468686A (en) * | 2019-09-09 | 2021-03-09 | 北京小米移动软件有限公司 | Camera module and mobile terminal with same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7692639B2 (en) * | 2006-02-10 | 2010-04-06 | Microsoft Corporation | Uniquely identifiable inking instruments |
| CN101441542B (en) * | 2008-11-21 | 2011-05-11 | 广东威创视讯科技股份有限公司 | Method and apparatus for recognizing multiple target objects by interactive input apparatus |
| CN103207706A (en) * | 2012-01-13 | 2013-07-17 | 南京先能光电科技有限公司 | Double-light pen electronic whiteboard system and light pen identifying method |
| 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 |
| CN202815789U (en) * | 2012-09-13 | 2013-03-20 | 福州锐达数码科技有限公司 | Electronic white board system with orthogonal projection image double-pen writing function |
| CN103500017B (en) * | 2013-09-17 | 2016-09-14 | 锐达互动科技股份有限公司 | A kind of many of photoelectricity interaction module identifies and tracking |
-
2014
- 2014-04-30 CN CN201410179192.7A patent/CN103955318B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105653025A (en) * | 2015-12-22 | 2016-06-08 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN105653025B (en) * | 2015-12-22 | 2019-12-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN106648171A (en) * | 2016-12-08 | 2017-05-10 | 南京仁光电子科技有限公司 | Interactive system and method based on writing pens |
| 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 |
| CN112468686A (en) * | 2019-09-09 | 2021-03-09 | 北京小米移动软件有限公司 | Camera module and mobile terminal with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103955318B (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7272417B2 (en) | Object tracking system, object tracking device, and object tracking method | |
| EP3740897B1 (en) | License plate reader using optical character recognition on plural detected regions | |
| US12075195B2 (en) | Intelligent video surveillance system and method | |
| JP6992475B2 (en) | Information processing equipment, identification system, setting method and program | |
| EP2608536B1 (en) | Method for counting objects and apparatus using a plurality of sensors | |
| CN103052960B (en) | Object detection and identification under situation out of focus | |
| CN105654507B (en) | A kind of vehicle overall dimension measurement method based on the tracking of image behavioral characteristics | |
| KR20180135898A (en) | Systems and methods for training object classifiers by machine learning | |
| US10347002B2 (en) | Electronic tracking device, electronic tracking system and electronic tracking method | |
| US20170124418A1 (en) | System and a method for the detection of multiple number-plates of moving cars in a series of 2-d images | |
| CN105431078A (en) | System and method for on-axis eye gaze tracking | |
| CN104615986B (en) | The method that pedestrian detection is carried out to the video image of scene changes using multi-detector | |
| US20150169082A1 (en) | Method and Device for Filter-Processing Imaging Information of Emission Light Source | |
| JP2015032133A (en) | Object search system | |
| CN103716687A (en) | Method and system for using fingerprints to track moving objects in video | |
| US8724851B2 (en) | Aerial survey video processing | |
| CN103810459A (en) | Image recognition device and solar array welding system by using same | |
| CN112307840A (en) | Indicator light detection method, device, equipment and computer readable storage medium | |
| CN103500017B (en) | A kind of many of photoelectricity interaction module identifies and tracking | |
| CN103955318A (en) | Method for identifying two pens in photoelectric interaction module and distinguishing two pens getting close to each other | |
| US20070223785A1 (en) | Image processor and method | |
| CN117664980A (en) | Whole vehicle paint defect detection system and working method thereof | |
| CN110490118A (en) | Image processing method and device | |
| CN102013007A (en) | Apparatus and method for detecting face | |
| KR101665207B1 (en) | Vehicle Detection Method in ROI through Plural Detection Windows |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 350108 6, No. 1 Innovation Park, No. 3 east science and technology road, Minhou street, Minhou, Fuzhou. Patentee after: Returnstar Interactive Technology Group Co., Ltd. Address before: 350000 8 tower building, Orange Garden Industrial Park, 618 Jinshan Road, Jianxin Town, Cangshan District, Fuzhou, Fujian. Patentee before: Returnstar Interactive Technology Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20210430 |