CN103776297B - The laser target recognition system of feature based figure and recognition methods thereof - Google Patents
The laser target recognition system of feature based figure and recognition methods thereof Download PDFInfo
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- CN103776297B CN103776297B CN201410033205.XA CN201410033205A CN103776297B CN 103776297 B CN103776297 B CN 103776297B CN 201410033205 A CN201410033205 A CN 201410033205A CN 103776297 B CN103776297 B CN 103776297B
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Abstract
The present invention relates to a kind of laser target recognition system and method for feature based figure, comprise scene generation unit, display unit, at least two laser emission parts, image acquisition units, filtering apparatus and target solving unit, also comprise at least two microdiffraction optical elements, described microdiffraction optical element and laser emission part one_to_one corresponding, microdiffraction optical element is placed between laser emission section and display unit, and the characteristic image that each microdiffraction optical element described produces is different.The present invention by the multiple laser eyepiece of single image collecting unit identification, thus economizes on resources and space, can be widely used in various simulated gunnery system.
Description
Technical field
The invention belongs to target identification technology field, particularly a kind of laser target recognition system can carrying out the feature based figure of Real time identification to different laser eyepiece type multiple in same environment and luminous point coordinate.
Background technology
Laser target identification is mainly used in the three-dimensional scenic of man-machine interaction, producing interactive reaction, in such as weapon simulated gunnery system.Existing laser target recognition system adopts the recognition technology based on optical maser wavelength.Existing laser target recognition system is made up of scene generation unit, display unit, laser emission part, image acquisition units, target solving unit, prior art is as identified multiple weapon simulator, then often increase a simulator and will increase image acquisition units corresponding to a kind of different wave length and filtering apparatus, 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, also limit the quantity identifying 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 of feature based figure, by the multiple laser eyepiece of single image collecting unit identification, thus economize on resources and space.
The technical solution realizing the object of the invention is: the laser target recognition system providing a kind of feature based figure, comprise scene generation unit, display unit, at least two laser emission parts, image acquisition units, filtering apparatus and target solving unit, also comprise at least two microdiffraction optical elements, the emission port place one_to_one corresponding of described microdiffraction optical element and laser emission part is installed, described microdiffraction optical element is placed between laser emission part and display unit, each microdiffraction optical element described has the opening diffracting of different characteristic image, described laser emission part through described microdiffraction optical element by luminous point display on the display unit, described image acquisition units gathers the characteristic image on display unit through described filtering apparatus, scene generation unit is sent to by after the computing of described target solving unit, the last target scene coordinate formed by the conversion of scene generation unit is shown by the display unit connected.
Further restriction technical scheme of the present invention is, the laser target recognition system of aforesaid feature based figure, the characteristic image that described microdiffraction optical element produces adopts two crossing line segments to be character shape, and different line segment lengths and crossing angle represent different pattern images.
The laser target recognition system of aforesaid feature based figure, described microdiffraction optical element is the planar lens with pattern image.
The laser target recognition system of aforesaid feature based figure, described display unit is made up of projecting apparatus and projection screen.
A Laser target identification method for feature based figure, comprises the following steps:
S1, by scene generation unit, three-dimensional virtual scene or real scene shooting scene to be shown by display unit;
S2, laser emission part are arranged in target to be identified, and laser light microdiffraction optical element, projects on the screen of a distance by the pattern image on microdiffraction optical element by diffraction, form the luminous point of special pattern; The characteristic image that each microdiffraction optical element produces is different, thus effectively distinguishes different laser emission parts;
S3, image acquisition units filter out other irrelevant light source by filtering apparatus, scan the screen at luminous point place, and the picture that the current screen that scanning is obtained is comprised all luminous points passes to target solving unit;
The identifying processing program of S4, target solving unit extracts straight lines all on this picture and the terminal point information of straight line by phase space conversion method, obtains 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, combining target type, calculates the various states of present laser emission element, and display on the display unit.
The Laser target identification method of aforesaid feature based figure, the characteristic image that described microdiffraction optical element produces adopts two crossing line segments to be character shape, and different line segment lengths and crossing angle represent different pattern images.
The Laser target identification method of aforesaid feature based figure, described microdiffraction optical element is the planar lens with pattern image.
The Laser target identification method of aforesaid feature based figure, 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 spots on display unit with certain characteristics of image, the laser graphics feature gathered can be accurately identified and locate, with the multiple laser eyepiece of single image collecting unit identification, thus 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 of the laser target recognition system that the present invention is based on pattern image.
Fig. 2 is the operation principle block diagram of the laser target recognition system that the present invention is based on pattern image.
Fig. 3 is the workflow diagram of the laser target recognition system that the present invention is based on pattern image.
In figure: 1 scene generation unit, 2 display units, 3 laser emission parts, 4 image acquisition units, 5, filtering apparatus, 6 target solving unit, 7 microdiffraction optical elements.
Detailed description of the invention
The present embodiment provides a kind of laser target recognition system of feature based figure, 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 solving unit 6, also comprise at least two microdiffraction optical elements 7 be made up of the planar lens with pattern image, display unit is made up of projecting apparatus and projection screen, microdiffraction optical element 7 is installed with the emission port place one_to_one corresponding of 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, luminous point is presented on display unit 2 through microdiffraction optical element 7 by laser emission part 3, image acquisition units gathers the characteristic image on display unit 2 through filtering apparatus 5, scene generation unit 1 is sent to by after target solving unit 6 computing, finally changed the target scene coordinate formed to be shown by the display unit 2 connected by scene generation unit 1.
The technical program by increasing the microdiffraction optical element with different images feature before each laser emission part, make to be irradiated to laser spots on display unit with certain characteristics of image, the laser graphics feature gathered can be accurately identified and locate, with the multiple laser eyepiece of single image collecting unit identification, thus significantly economize on resources and space.
The characteristic image that the microdiffraction optical element 7 of the present embodiment produces adopts two crossing line segments to be character shape, and different line segment lengths and crossing angle represent different pattern images; Arrange between the crossing angle of different pattern images and be enough to different pattern images be distinguished the geometry protection interval of coming; Arrange between the line segment length of different pattern images and be enough to different pattern images be distinguished the geometry protection interval of coming.
Microdiffraction optical element is one piece of planar lens with pattern image, and laser is by forming the luminous point with pattern image after these lens.Pattern image has following requirement: adopt two line segment intersections to be special designs shape, different pattern images has different crossing angles and length.When introducing plurality of target feature, for each character shape arranges the geometry protection interval of certain angle, avoid erroneous judgement.The protection size at interval is relevant to the ability of the resolution ratio of image acquisition units 4 and target solving unit 6, is determined by experiment.Meanwhile, adopt two crossing line segments to be character shape, easily realize the differentiation of different target, and consumption calculations resource is few, 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:
Three-dimensional virtual scene or real scene shooting scene are shown by display unit 2 by scene generation unit 1;
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 light microdiffraction optical element 7, projects on the screen of a distance by the pattern image on microdiffraction optical element 7 by diffraction, forms the luminous point of special pattern; The characteristic image that each microdiffraction optical element 7 produces is different, thus effectively distinguishes different laser emission parts 3;
Image acquisition units 4 filters out other irrelevant light source by filtering apparatus 5, scans the screen at luminous point place, and the picture that the current screen that scanning is obtained is comprised all luminous points passes to target solving unit 6;
The identifying processing program of target solving unit 6 extracts straight lines all on this picture and the terminal point information of straight line by phase space conversion method, obtains 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, combining target type, calculates the various states of present laser emission element 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 application claims.
Claims (8)
1. the laser target recognition system of feature based figure, comprise scene generation unit (1), display unit (2), at least two laser emission parts (3), image acquisition units (4), filtering apparatus (5) and target solving unit (6), it is characterized in that: also comprise at least two microdiffraction optical elements (7), described microdiffraction optical element (7) is installed with the emission port place one_to_one corresponding of laser emission part (3), described microdiffraction optical element (7) is placed between laser emission part (3) and display unit (2), each microdiffraction optical element (7) described has the opening diffracting of different characteristic image, luminous point is presented on display unit (2) through described microdiffraction optical element (7) by described laser emission part (3), described image acquisition units gathers the characteristic image on display unit (2) through described filtering apparatus (5), scene generation unit (1) is sent to by after the computing of described target solving unit (6), the last target scene coordinate formed by scene generation unit (1) conversion is shown by the display unit (2) connected.
2. the laser target recognition system of feature based figure according to claim 1, it is characterized in that: the characteristic image that described microdiffraction optical element (7) produces adopts two crossing line segments to be character shape, and different line segment lengths and crossing angle represent different pattern images.
3. the laser target recognition system of feature based figure 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 of feature based figure according to claim 1, is characterized in that: described display unit (2) is made up of projecting apparatus and projection screen.
5. the target identification method of the laser target recognition system of feature based figure 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 to be shown by display unit;
S2, laser emission part are arranged in target to be identified, and laser light microdiffraction optical element, by microdiffraction optical element
On pattern image project on the screen of a distance by diffraction, form the luminous point of special pattern; The characteristic image that each microdiffraction optical element produces is different, thus effectively distinguishes different laser emission parts;
S3, image acquisition units filter out other irrelevant light source by filtering apparatus, scan the screen at luminous point place, and the picture that the current screen that scanning is obtained is comprised all luminous points passes to target solving unit;
The identifying processing program of S4, target solving unit extracts straight lines all on this picture and the terminal point information of straight line by phase space conversion method, obtains 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, combining target type, calculates the various states of present laser emission element, and display on the display unit.
6. the target identification method of the laser target recognition system of feature based figure according to claim 5, it is characterized in that: the characteristic image that described microdiffraction optical element produces adopts two crossing line segments to be character shape, and different line segment lengths and crossing angle represent different pattern images.
7. the target identification method of the laser target recognition system of feature based figure according to claim 5, is characterized in that: described microdiffraction optical element is the planar lens with pattern image.
8. the target identification method of the laser target recognition system of feature based figure according to claim 5, is characterized in that: described display unit is made up of projecting apparatus and projection screen.
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| 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 |
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 |
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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 |
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