CN104216637A - Method and system for controlling spliced large screen by identifying light spot tracks - Google Patents
Method and system for controlling spliced large screen by identifying light spot tracks Download PDFInfo
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- CN104216637A CN104216637A CN201410486490.0A CN201410486490A CN104216637A CN 104216637 A CN104216637 A CN 104216637A CN 201410486490 A CN201410486490 A CN 201410486490A CN 104216637 A CN104216637 A CN 104216637A
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- hot spot
- motion track
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- large screen
- spot motion
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Abstract
The invention discloses a method and a system for controlling a spliced large screen by identifying light spot tracks. The method comprises the specific steps of moving a laser pen to form light spot moving tracks on the spliced large screen; gathering the spot moving tracks by an image collecting device; identifying the spot moving tracks by an image identifying system; to generating a control signal by a control system so as to realize a process of controlling the display contents of the spliced large screen, wherein the system for implementing the method is formed by the laser pen, the image collecting device, the image identifying system and the control system. The method and the system provided by the invention have the characteristics of being simple in structure, high in identifying precision, convenient to operate and the like.
Description
Technical field
The present invention relates to the control field of splicing large screen, espespecially a kind of by identifying that spot tracks controls the method and system of splicing large screen.
Background technology
Existing splicing large screen all will use large-screen splicing device, realizes the control to giant-screen.Although it has the strong and high reliability of simple to operate, expansivity; And several images can be shown simultaneously; But often wish in fields such as public security, traffic, productions to amplify certain concrete image of display, reduce, the true-time operation such as to move, and existing splicing large screen splicer can only rely on mouse, keyboard realizes aforesaid operations; And when screen area is larger, cannot realize the operation of explanation limit, limit, spectators initiatively can not select the picture that will see, can only passive viewing, are unfavorable for that meeting is interactive.
Summary of the invention
For prior art Problems existing, the first object of the present invention is to provide a kind of method that structure is simple, easy to operate, can realize operations such as the concrete image of splicing large screen amplify, reduces and moves.The second object of the present invention is to provide a kind of system realizing said method.
For achieving the above object, a kind of by identifying that spot tracks controls the method for splicing large screen, comprising:
1) mobile laser pen forms hot spot motion track on splicing large screen;
2) gather described hot spot motion track by image capture device, and the hot spot motion track collected is sent to image identification system;
3) described image identification system identifies the hot spot motion track received, and recognition result is sent to giant-screen control system;
4) described control system generates the control of control signal realization to splicing large screen displaying contents according to the recognition result received.
Further, the motion track of hot spot described in step 1) is left-handed or the circular trace of dextrorotation, cross track or point, and the laser color of described laser pen is green.
Further, described left hand circular track definition is ' 0 ', and described right hand circular track definition is ' 1 ', increases time coordinate T0, T1, then form two 2 binary digits 00,01,10,11; Increase time coordinate T2 again and then can form 832 binary digits 000,001,010,011,100,101,110,111, can continue in theory by that analogy to increase.
Further, step 2) described in image capture device the giant-screen picture of shooting is carried out gridding process, a physical location in the corresponding giant-screen of each grid, for each physical location sets up a coordinate; And to arrange the hot spot motion track that laser pen only formed in each physical location region be valid function.
Further; step 2) described in install green color filter additional before image capture device camera lens, and by the splicing large screen image adjustment that gathers to the image capture device camera lens depth of field, weaken normal pictures on giant-screen; outstanding laser facula, obtains hot spot motion track with this.
Further, step 3) is specially: described image identification system is analyzed frame by frame to the hot spot motion track received, and determines the physical location coordinate at every frame hot spot coordinate and described hot spot motion track place; Hot spot coordinate in the frame of front and back two is contrasted, determines the direction of spot tracks movement; And record the frame number of described hot spot motion track; Within the time of setting, line between hot spot coordinate points forms approximate closed curve, namely join end to end and the frame number of hot spot motion track is greater than the threshold value of setting time, think at picture circle, and in conjunction with track moving direction, determine it is left hand circular track or right hand circular track; Then combine the time coordinate preset, form corresponding 2 binary digits; The physical location coordinate at described 2 binary digits and hot spot motion track place is sent to control system simultaneously.
Further, if described every frame hot spot coordinate is rest point within the time of described setting, then reset described image identification system.
Further, described control system, according to the corresponding control signal of physical location Coordinate generation at described 2 binary digits received and hot spot motion track place, controls the amplification of giant-screen respective physical cell picture, reduces and the action such as to move.
Implement a system for said method, it is characterized in that, described system comprises: laser pen, image capture device, image identification system and control system;
Described laser pen for forming hot spot motion track on splicing large screen;
Described image capture device is for gathering described hot spot motion track and by giant-screen picture gridding process, then the mobile laser trace gathered being sent to described image identification system;
Described image identification system for receiving described mobile laser trace, and identifies mobile laser trace, then recognition result is sent to described control system;
Described control system for receiving described recognition result, and generates corresponding control signal control splicing large screen according to recognition result.
Further, described image capture device, image identification system and control system realize communication by switch.
The present invention achieves and the operation such as amplifies, reduces and move by arranging image capturing system, image identification system and control system to the local of splicing large screen.The method also can realize when splicing large screen area is larger operating easily, and structure is simple, and the personnel of explanation concatenation information can control splicing large screen by laser pen, make more convenient the reaching more efficiently of interpretation staff better explain effect.
Accompanying drawing explanation
Fig. 1 is the embodiment process flow diagram of the inventive method;
Fig. 2 is the connection diagram of each several part in present system;
Fig. 3 is the program flow diagram of recognition system identification of the present invention left-handed or right hand circular track and rest point.
Embodiment
For further setting forth the present invention for the technological means that reaches predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing, the present invention is elaborated.
As shown in Figure 1, this invention is as follows by identifying the concrete implementation step of method of spot tracks control splicing large screen:
1) first move laser pen by laser pen user of service on splicing large screen, form hot spot motion track; Hot spot motion track is left-handed or the circular trace of dextrorotation, cross track or point; and the laser color of laser pen is green; because laser has the advantages that brightness is high, do not disperse; so obvious hot spot can be reflected on giant-screen; for avoiding picture color interference on giant-screen, laser color preferably selects green.
2) gather the hot spot motion track on giant-screen by image capture device, and the hot spot motion track collected is sent to image identification system; Color because of laser is preferably green, so install green color filter additional accordingly before image capture device camera lens, and by the splicing large screen image adjustment of collection to the image capture device camera lens depth of field, weaken normal pictures on giant-screen, outstanding laser facula, obtains hot spot motion track with this; Now by outside the splicing large screen image adjustment of collection to the image capture device camera lens depth of field mainly in order to avoid the interference that normal pictures on giant-screen causes gatherer process, prevent from identifying by mistake, affect the degree of accuracy of whole identifying; But simultaneously because laser brightness is high, so image capture device can't be affected gather laser trace;
Because the area of splicing large screen is general larger, so in order to realize the operation to local certain unit display image, the giant-screen picture of shooting is carried out gridding process by image capture device, a physical location in the corresponding giant-screen of each grid, and each physical location sets up a coordinate; And to arrange the hot spot motion track that laser pen only formed in each physical location region be valid function, now mainly in order to prevent hot spot motion track across different physical locations, cause maloperation.
3) image identification system identifies the hot spot motion track received, and recognition result is sent to control system; Be ' 0 ' by left hand circular track definition in advance in image identification system, right hand circular track definition is ' 1 ', increases time coordinate T0, T1, then form two 2 binary digits 00,01,10,11; Increase time coordinate T2 again and then can form 832 binary digits 000,001,010,011,100,101,110,111, as long as so guarantee effective identification, avoid erroneous judgement, increase time coordinate further and can form some groups of 2 binary digits.
As shown in Figure 3, image identification system is analyzed frame by frame to the hot spot motion track received, and determines the physical location coordinate (not shown) at every frame hot spot coordinate and described hot spot motion track place; Hot spot coordinate in the frame of front and back two is contrasted, determines the direction of spot tracks movement; And record the frame number of described hot spot motion track; Within the time of setting, if line between hot spot coordinate points forms approximate closed curve, namely join end to end and the frame number of hot spot motion track is greater than the threshold value of setting time, think at picture circle, and in conjunction with track moving direction, determine it is left hand circular track or right hand circular track; Then combine the time coordinate preset, form corresponding 2 binary digits; The physical location coordinate at 2 binary digits formed and hot spot motion track place is sent to control system simultaneously; If described every frame hot spot coordinate is rest point within the time of described setting, then reset described image identification system.
4) described control system generates the control of control signal realization to splicing large screen displaying contents according to the recognition result received; Detailed process is, the classification of the inner 2 binary digits setup control signals formed by recognition system in advance of control system, as: 2 binary digits of recognition system identification are 00, and control system is set as the control signal of amplifying; When the 2 system numbers that control system receives are 00, then control system will generate the control signal of enlarged image.
Then control system according to the physical location coordinate information identifying operation person at the hot spot motion track place received want operate physical location, corresponding control signal is sent to corresponding physical location, realize to respective physical unit display image operation; This method is by identifying that physical location coordinate ensure that the accurate identification to splicing large screen.
As shown in Figure 2, a kind of system implementing said method, this system comprises: laser pen, image capture device, image identification system and control system; Laser machine for forming hot spot motion track on splicing large screen; Image capture device is for gathering described hot spot motion track and by giant-screen picture gridding process, then the mobile laser trace gathered being sent to described image identification system; Image identification system for receiving described mobile laser trace, and identifies mobile laser trace, then recognition result is sent to described control system; Control system for receiving recognition result, and generates corresponding control signal control splicing large screen according to recognition result; Image capture device, image identification system and control system realize communication by switch.
Described just in order to the present invention is described above, be construed as the present invention and be not limited to above embodiment, meet the various variants of inventive concept all within protection scope of the present invention.
Claims (10)
1., by identifying that spot tracks controls a method for splicing large screen, it is characterized in that, described method comprises:
1) mobile laser pen forms hot spot motion track on splicing large screen;
2) gather described hot spot motion track by image capture device, and the hot spot motion track collected is sent to image identification system;
3) described image identification system identifies the hot spot motion track received, and recognition result is sent to control system;
4) described control system generates the control of control signal realization to splicing large screen displaying contents according to the recognition result received.
2. the method for claim 1, is characterized in that, the motion track of hot spot described in step 1) is left-handed or the circular trace of dextrorotation, cross track or point, and the laser color of described laser pen is green.
3. method as claimed in claim 2, it is characterized in that, described left hand circular track definition is ' 0 ', and described right hand circular track definition is ' 1 ', increases time coordinate T0, T1, then form two 2 binary digits 00,01,10,11; Increase time coordinate T2 again and then can form 832 binary digits 000,001,010,011,100,101,110,111.
4. the method for claim 1, is characterized in that, step 2) described in image capture device the giant-screen picture of shooting is carried out gridding process, a physical location in the corresponding giant-screen of each grid, each physical location sets up a coordinate; And to arrange the hot spot motion track that laser pen only formed in each physical location region be valid function.
5. method as claimed in claim 2; it is characterized in that; step 2) described in install green color filter additional before image capture device camera lens; and by the splicing large screen image adjustment of collection to the image capture device camera lens depth of field; weaken normal pictures on giant-screen; outstanding laser facula, obtains hot spot motion track with this.
6. method as claimed in claim 4, it is characterized in that, step 3) is specially: described image identification system is analyzed frame by frame to the hot spot motion track received, and determines the physical location coordinate at every frame hot spot coordinate and described hot spot motion track place; Hot spot coordinate in the frame of front and back two is contrasted, determines the direction of spot tracks movement; And record the frame number of described hot spot motion track; Within the time of setting, line between hot spot coordinate points forms approximate closed curve, namely join end to end and the frame number of hot spot motion track is greater than the threshold value of setting time, think at picture circle, and in conjunction with track moving direction, determine it is left hand circular track or right hand circular track; Then combine the time coordinate preset, form corresponding 2 binary digits; The physical location coordinate at described 2 binary digits and hot spot motion track place is sent to control system simultaneously.
7. method as claimed in claim 6, it is characterized in that, if described every frame hot spot coordinate is rest point within the time of described setting, then reset described image identification system.
8. method as claimed in claim 6, it is characterized in that, described control system, according to the corresponding control signal of physical location Coordinate generation at described 2 binary digits received and hot spot motion track place, controls the amplification of giant-screen respective physical cell picture, reduces and the action such as to move.
9. implement the claims a system for method described in any one of 1-8, it is characterized in that, described system comprises: laser pen, image capture device, image identification system and control system;
Described laser machine for forming hot spot motion track on splicing large screen;
Described image capture device is for gathering described hot spot motion track and by giant-screen picture gridding process, then the mobile laser trace gathered being sent to described image identification system;
Described image identification system for receiving described mobile laser trace, and identifies mobile laser trace, then recognition result is sent to described control system;
Described control system for receiving described recognition result, and generates corresponding control signal control splicing large screen according to recognition result.
10. system as claimed in claim 9, is characterized in that, described image capture device, image identification system and control system realize communication by switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486490.0A CN104216637B (en) | 2014-09-23 | 2014-09-23 | A kind of method and system by identifying spot tracks control splicing large screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410486490.0A CN104216637B (en) | 2014-09-23 | 2014-09-23 | A kind of method and system by identifying spot tracks control splicing large screen |
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| CN104216637A true CN104216637A (en) | 2014-12-17 |
| CN104216637B CN104216637B (en) | 2018-01-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589930A (en) * | 2017-09-05 | 2018-01-16 | 北京仁光科技有限公司 | Multi-screen control system and method |
| CN111752378A (en) * | 2019-03-29 | 2020-10-09 | 福建天泉教育科技有限公司 | Gesture instruction execution method and storage medium |
| CN111831140A (en) * | 2020-07-14 | 2020-10-27 | 北京简元科技有限公司 | Visual interaction method, device and equipment based on laser pen |
| WO2020232703A1 (en) * | 2019-05-23 | 2020-11-26 | 深圳市瑞立视多媒体科技有限公司 | Rigid body recognition method and apparatus, and system and terminal device |
-
2014
- 2014-09-23 CN CN201410486490.0A patent/CN104216637B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589930A (en) * | 2017-09-05 | 2018-01-16 | 北京仁光科技有限公司 | Multi-screen control system and method |
| CN111752378A (en) * | 2019-03-29 | 2020-10-09 | 福建天泉教育科技有限公司 | Gesture instruction execution method and storage medium |
| WO2020232703A1 (en) * | 2019-05-23 | 2020-11-26 | 深圳市瑞立视多媒体科技有限公司 | Rigid body recognition method and apparatus, and system and terminal device |
| CN111831140A (en) * | 2020-07-14 | 2020-10-27 | 北京简元科技有限公司 | Visual interaction method, device and equipment based on laser pen |
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| Publication number | Publication date |
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| CN104216637B (en) | 2018-01-23 |
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Granted publication date: 20180123 Termination date: 20200923 |