CN103776297A - Laser target identifying system based on character pictures and identifying method of laser target identifying system - Google Patents
Laser target identifying system based on character pictures and identifying method of laser target identifying system Download PDFInfo
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- CN103776297A CN103776297A CN201410033205.XA CN201410033205A CN103776297A CN 103776297 A CN103776297 A CN 103776297A CN 201410033205 A CN201410033205 A CN 201410033205A CN 103776297 A CN103776297 A CN 103776297A
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Abstract
The invention relates to a laser target identifying system based on character pictures and an identifying method of the laser target identifying system. The laser target identifying system comprises a scene generating unit, a display unit, at least two laser transmitting parts, an image collecting unit, a filtering device and a target resolving unit, and further comprises at least two micro-diffraction optical elements, wherein the micro-diffraction optical elements correspond to the laser transmitting parts one by one; the micro-diffraction optical elements are arranged between the laser transmitting parts and the display unit; the character pictures generated by each micro-diffraction optical element are different. The laser target identifying system provided by the invention can be used for identifying a plurality of laser targets through the single image collecting unit, so that resources and spaces can be saved; the laser target identifying system can be widely applicable to various shooting simulation systems.
Description
Technical field
The invention belongs to target identification technology field, particularly a kind of laser target recognition system based on pattern image that can carry out to multiple different laser eyepiece types and luminous point coordinate in same environment Real time identification.
Background technology
Laser target identification is mainly used in the three-dimensional scenic of man-machine interaction, producing interactive reaction, in weapon simulated gunnery system.Existing laser target recognition system adopts the recognition technology based on optical maser wavelength.Existing laser target recognition system is resolved unit by scene generation unit, display unit, laser emission part, image acquisition units, target and is formed, prior art is identified multiple weapon simulator as need, simulator of every increase will increase image acquisition units and the filtering apparatus that a kind of different wave length is corresponding, cause the waste in resource and space, and the restriction of the prior art Stimulated Light wavelength, cannot expand in a large number, the target type that can identify is limited, has also limited the quantity of identification target.
Summary of the invention
The object of the present invention is to provide a kind of laser target recognition system and recognition methods thereof based on pattern image, can identify multiple laser eyepiece by single image collecting unit, thereby economize on resources and space.
The technical solution that realizes the object of the invention is: a kind of laser target recognition system based on pattern image is provided, comprise scene generation unit, display unit, at least two laser emission parts, image acquisition units, filtering apparatus and target are resolved unit, also comprise at least two microdiffraction optical elements, the emission port place corresponding installation one by one of described microdiffraction optical element and laser emission part, described microdiffraction optical element is placed between laser emission part and display unit, described each microdiffraction optical element has the opening diffracting of different characteristic image, described laser emission part sees through described microdiffraction optical element luminous point is presented on display unit, described image acquisition units sees through described filtering apparatus and gathers the characteristic image on display unit, after resolving unitary operation by described target, be sent to scene generation unit, the last target scene coordinate being formed by the conversion of scene generation unit shows by the display unit connecting.
Further restriction technical scheme of the present invention is, the aforesaid laser target recognition system based on pattern image, it is character shape that the characteristic image that described microdiffraction optical element produces adopts two crossing line segments, and different line segment lengths and crossing angle represent different pattern images.
The aforesaid laser target recognition system based on pattern image, described microdiffraction optical element is the planar lens with pattern image.
The aforesaid laser target recognition system based on pattern image, described display unit is made up of projecting apparatus and projection screen.
A Laser target identification method based on pattern image, comprises the following steps:
S1, by scene generation unit, three-dimensional virtual scene or real scene shooting scene are shown by display unit;
S2, laser emission part are arranged in target to be identified, and laser sees through microdiffraction optical element, the pattern image on microdiffraction optical element are projected by diffraction on the screen of a distance, form the luminous point of special pattern; The characteristic image that each microdiffraction optical element produces is different, thereby effectively distinguishes different laser emission parts;
S3, image acquisition units filter out other irrelevant light source by filtering apparatus, and the screen at luminous point place is scanned, and the picture that comprises all luminous points on the current screen that scanning is obtained passes to target and resolves unit;
The identifying processing program that S4, target are resolved unit extracts the terminal point information of straight line and straight line all on this picture by phase space conversion method, obtain angle and the length of all luminous points on picture, and luminous point coordinate; By more predefined target type and luminous point feature corresponding relation, calculate type and the luminous point coordinate of all targets, then target type and luminous point coordinate are passed to scene generation unit;
Luminous point Coordinate Conversion is become target scene coordinate by S5, scene generation unit, and combining target type calculates the various states of current laser emission part, and is presented on display unit.
The aforesaid Laser target identification method based on pattern image, it is character shape that the characteristic image that described microdiffraction optical element produces adopts two crossing line segments, different line segment lengths and crossing angle represent different pattern images.
The aforesaid Laser target identification method based on pattern image, described microdiffraction optical element is the planar lens with pattern image.
The aforesaid Laser target identification method based on pattern image, described display unit is made up of projecting apparatus and projection screen.
The present invention compared with prior art, its remarkable advantage: the technical program by increasing the microdiffraction optical element with different images feature before each laser emission part, make to be irradiated to laser point on display unit with certain characteristics of image, the laser graphics feature gathering can be identified and locate exactly, identify multiple laser eyepiece with single image collecting unit, thereby significantly economize on resources and space.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is based on the laser target recognition system of pattern image.
Fig. 2 is the operation principle block diagram that the present invention is based on the laser target recognition system of pattern image.
Fig. 3 is the workflow diagram that the present invention is based on the laser target recognition system of pattern image.
In figure: 1 scene generation unit, 2 display units, 3 laser emission parts, 4 image acquisition units, 5, filtering apparatus, 6 targets are resolved unit, 7 microdiffraction optical elements.
The specific embodiment
The present embodiment provides a kind of laser target recognition system based on pattern image, as shown in Figure 1, comprise scene generation unit 1, display unit 2, at least two laser emission parts 3, image acquisition units 4, filtering apparatus 5 and target are resolved unit 6, also comprise that at least two by the microdiffraction optical element 7 forming with the planar lens of pattern image, display unit is made up of projecting apparatus and projection screen, the emission port place corresponding installation one by one of microdiffraction optical element 7 and laser emission part 3, microdiffraction optical element 7 is placed between laser emission part 3 and display unit 2, each microdiffraction optical element 7 has the opening diffracting of different characteristic image, laser emission part 3 sees through microdiffraction optical element 7 luminous point is presented on display unit 2, image acquisition units sees through filtering apparatus 5 and gathers the characteristic image on display unit 2, after resolving unit 6 computings by target, be sent to scene generation unit 1, finally changing by scene generation unit 1 the target scene coordinate forming shows by the display unit 2 connecting.
The technical program by increasing the microdiffraction optical element with different images feature before each laser emission part, make to be irradiated to laser point on display unit with certain characteristics of image, the laser graphics feature gathering can be identified and locate exactly, identify multiple laser eyepiece with single image collecting unit, thereby significantly economize on resources and space.
It is character shape that the characteristic image that the microdiffraction optical element 7 of the present embodiment produces adopts two crossing line segments, and different line segment lengths and crossing angle represent different pattern images; The geometry that is enough to different pattern image differences to be come is set between the crossing angle of different pattern images and protects intervals; The geometry that is enough to different pattern image differences to be come is set between the line segment length of different pattern images and protects intervals.
Microdiffraction optical element is a planar lens with pattern image, and laser is by forming the luminous point with pattern image after these lens.Pattern image has following requirement: adopting two line segment intersections is special designs shape, and different pattern images has different crossing angle and length.While introducing plurality of target feature, the geometry that certain angle is set for each character shape is protected intervals, avoids erroneous judgement.The ability that the protection size at interval and the resolution ratio of image acquisition units 4 and target is resolved unit 6 is relevant, is determined by experiment.Meanwhile, adopting two crossing line segments is character shape, easily realize the differentiation of different target, and consumption calculations resource is few, and amount of calculation is little.
As shown in Figure 2,3, the course of work that the present invention is based on the Laser target identification method of pattern image is:
Scene generation unit 1 shows three-dimensional virtual scene or real scene shooting scene by display unit 2;
Each laser emission part 3 comprises a lasing light emitter, is all provided with a microdiffraction optical element 7 before it;
Lasing light emitter is arranged in target to be identified, and laser sees through microdiffraction optical element 7, the pattern image on microdiffraction optical element 7 is projected by diffraction on the screen of a distance, forms the luminous point of special pattern; The characteristic image that each microdiffraction optical element 7 produces is different, thereby effectively distinguishes different laser emission part 3;
Image acquisition units 4 filters out other irrelevant light source by filtering apparatus 5, and the screen at luminous point place is scanned, and the picture that comprises all luminous points on the current screen that scanning is obtained passes to target and resolves unit 6;
The identifying processing program that target is resolved unit 6 extracts the terminal point information of straight line and straight line all on this picture by phase space conversion method, obtain angle and the length of all luminous points on picture, and luminous point coordinate.By more predefined target type and luminous point feature corresponding relation, calculate type and the luminous point coordinate of all targets, then target type and luminous point coordinate are passed to scene generation unit 1;
Luminous point Coordinate Conversion is become target scene coordinate by scene generation unit 1, and combining target type calculates the various states of current laser emission part 3, and is presented on display unit 2.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (8)
1. the laser target recognition system based on pattern image, comprise scene generation unit (1), display unit (2), at least two laser emission parts (3), image acquisition units (4), filtering apparatus (5) and target are resolved unit (6), it is characterized in that: also comprise at least two microdiffraction optical elements (7), the emission port place corresponding installation one by one of described microdiffraction optical element (7) and laser emission part (3), described microdiffraction optical element (7) is placed between laser emission part (3) and display unit (2), described each microdiffraction optical element (7) has the opening diffracting of different characteristic image, described laser emission part (3) sees through described microdiffraction optical element (7) luminous point is presented on display unit (2), described image acquisition units sees through described filtering apparatus (5) and gathers the characteristic image on display unit (2), after resolving unit (6) computing by described target, be sent to scene generation unit (1), the target scene coordinate finally being formed by scene generation unit (1) conversion shows by the display unit (2) connecting.
2. the laser target recognition system based on pattern image according to claim 1, it is characterized in that: it is character shape that the characteristic image that described microdiffraction optical element (7) produces adopts two crossing line segments, and different line segment lengths and crossing angle represent different pattern images.
3. the laser target recognition system based on pattern image according to claim 1, is characterized in that: described microdiffraction optical element (7) is the planar lens with pattern image.
4. the laser target recognition system based on pattern image according to claim 1, is characterized in that: described display unit (2) is made up of projecting apparatus and projection screen.
5. the Laser target identification method based on pattern image according to claim 1, is characterized in that comprising the following steps:
S1, by scene generation unit, three-dimensional virtual scene or real scene shooting scene are shown by display unit;
S2, laser emission part are arranged in target to be identified, and laser sees through microdiffraction optical element, the pattern image on microdiffraction optical element are projected by diffraction on the screen of a distance, form the luminous point of special pattern; The characteristic image that each microdiffraction optical element produces is different, thereby effectively distinguishes different laser emission parts;
S3, image acquisition units filter out other irrelevant light source by filtering apparatus, and the screen at luminous point place is scanned, and the picture that comprises all luminous points on the current screen that scanning is obtained passes to target and resolves unit;
The identifying processing program that S4, target are resolved unit extracts the terminal point information of straight line and straight line all on this picture by phase space conversion method, obtain angle and the length of all luminous points on picture, and luminous point coordinate; By more predefined target type and luminous point feature corresponding relation, calculate type and the luminous point coordinate of all targets, then target type and luminous point coordinate are passed to scene generation unit;
Luminous point Coordinate Conversion is become target scene coordinate by S5, scene generation unit, and combining target type calculates the various states of current laser emission part, and is presented on display unit.
6. the Laser target identification method based on pattern image according to claim 5, it is characterized in that: it is character shape that the characteristic image that described microdiffraction optical element produces adopts two crossing line segments, and different line segment lengths and crossing angle represent different pattern images.
7. the Laser target identification method based on pattern image according to claim 5, is characterized in that: described microdiffraction optical element is the planar lens with pattern image.
8. the Laser target identification method based on pattern image according to claim 5, is characterized in that: described display unit is made up of projecting apparatus and projection screen.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758385A (en) * | 2016-03-19 | 2016-07-13 | 广州能欣计算机技术有限公司 | Rapid multi-laser-point positioning method and system based on vision |
| CN110174771A (en) * | 2019-05-10 | 2019-08-27 | 深圳市速腾聚创科技有限公司 | A kind of light-source system and laser radar |
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| US4259009A (en) * | 1979-07-30 | 1981-03-31 | The United States Of America As Represented By The Secretary Of The Navy | Far field target designators |
| CN1700214A (en) * | 2005-06-01 | 2005-11-23 | 中国人民解放军国防科学技术大学 | Pulsed laser spot software synchronization acquisition method |
| CN1789947A (en) * | 2005-12-19 | 2006-06-21 | 中国人民解放军总装备部军械技术研究所 | Field online integrated tester for pulse laser emitter |
| CN101101199A (en) * | 2006-12-29 | 2008-01-09 | 中国人民解放军总参谋部第五十四研究所 | Laser parameter measuring device |
| CN103019258A (en) * | 2012-11-28 | 2013-04-03 | 中国人民解放军装甲兵工程学院 | Multi-target tracking indicating technology based on optical phased array and reverse optics |
-
2014
- 2014-01-23 CN CN201410033205.XA patent/CN103776297B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4259009A (en) * | 1979-07-30 | 1981-03-31 | The United States Of America As Represented By The Secretary Of The Navy | Far field target designators |
| CN1700214A (en) * | 2005-06-01 | 2005-11-23 | 中国人民解放军国防科学技术大学 | Pulsed laser spot software synchronization acquisition method |
| CN1789947A (en) * | 2005-12-19 | 2006-06-21 | 中国人民解放军总装备部军械技术研究所 | Field online integrated tester for pulse laser emitter |
| CN101101199A (en) * | 2006-12-29 | 2008-01-09 | 中国人民解放军总参谋部第五十四研究所 | Laser parameter measuring device |
| CN103019258A (en) * | 2012-11-28 | 2013-04-03 | 中国人民解放军装甲兵工程学院 | Multi-target tracking indicating technology based on optical phased array and reverse optics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758385A (en) * | 2016-03-19 | 2016-07-13 | 广州能欣计算机技术有限公司 | Rapid multi-laser-point positioning method and system based on vision |
| CN110174771A (en) * | 2019-05-10 | 2019-08-27 | 深圳市速腾聚创科技有限公司 | A kind of light-source system and laser radar |
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Effective date of registration: 20170914 Address after: 210016 Zhujianglu Road, Jiangsu, No. 766, Co-patentee after: No. 60 Research Inst., the Headquarters of the General Staff, PLA of China Patentee after: Nanjing Research Institute on Simulation Technique Address before: 210016 Zhujianglu Road, Jiangsu, No. 766, Patentee before: No. 60 Research Inst., the Headquarters of the General Staff, PLA of China |
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