CN104866845A - Ultraviolet infrared LED fingerprint detection system - Google Patents
Ultraviolet infrared LED fingerprint detection system Download PDFInfo
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- CN104866845A CN104866845A CN201510318649.2A CN201510318649A CN104866845A CN 104866845 A CN104866845 A CN 104866845A CN 201510318649 A CN201510318649 A CN 201510318649A CN 104866845 A CN104866845 A CN 104866845A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1312—Sensors therefor direct reading, e.g. contactless acquisition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/25—Fusion techniques
- G06F18/253—Fusion techniques of extracted features
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1347—Preprocessing; Feature extraction
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- Bioinformatics & Cheminformatics (AREA)
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Abstract
The invention discloses an ultraviolet infrared LED fingerprint detection system, wherein the system comprises an ultraviolet infrared LED light source, a power module thereof, an ultraviolet lens, an image intensifier and CCD, CMOS and A/D conversion, image processing module, a storing and displaying module, and so on. The system is used for detecting a target to obtain primary ultraviolet/infrared double-spectrum image information and outputting the information to a fusion system by converting, and strengthening intensity. The fusion system is used for processing image input obtained by an imaging system and displaying different results according to different requirements of different users. The fingerprint detection system of the invention can be used for increasing proportion of useful information in the image of fingerprint recognition, effectively improving definition of the image so as to display some characteristics which cannot be displayed in a single sensor image, improving spatial resolution of the image, increasing content of spectral information, and obtaining complementary image information for improving detection, classification, understanding and recognition performances.
Description
Technical field
The present invention relates to a kind of detection system, especially a kind of system of being carried out image procossing by ultraviolet, infrared LED as exciting light source.
Background technology
At detecting site, the fingerprint trace that vestige is fuzzy and the time is excessively of a specified duration just brings obstacle to detection.Body fluid, the fingerprint trace such as blood, seminal fluid of human body, and part explosive, drugs etc., in time having ultraviolet good fortune to penetrate excitation, all can produce special absorption, reflection, scattering or fluorescent characteristic, this is just for utilizing ultraviolet detection technical limit spacing fingerprint to bring possibility.Different from conventional fingerprint detection technique, ultraviolet fingerprint detection does not destory the scene, without the need to carrying out any chemical treatment to scene, easy to carry, safe and reliable, effective at a high speed.And for the colourless fingerprint of the smooth finish surfaces such as glass, pottery, plastics, the work of extracting and identifying can be completed well, there is many outstanding advantages.To apply in a flexible way ultraviolet detection technology, for security administration, fight crime, safeguarding stability all has great Social benefit and economic benefit.
But compared with prosperity science and technology country, China is for the research starting evening of ultraviolet corona detector, and basis is poor, and research strength is short of, and overall development level lags far behind.Single Ultraviolet sensor image is in geometric configuration, spectral range, and all many-sides such as resolution sizes have significant limitation, and just can address these problems well with infrared image integration technology.Moreover, quality, the effective information of fused images also promote all to some extent, and these observations to target, identification, location, analysis create favourable condition.Meanwhile, due to the high concentration of information, lengthy and jumbled information greatly reduces, and call data storage reduces greatly, and the workload of observer, analyst also greatly reduces.
Summary of the invention
The object of the present invention is to provide a kind of ultraviolet, infrared LED fingerprint detection system, while carrying out ultraviolet detector finger print information, additional with infrared background information, fused images is had infrared with ultraviolet image information simultaneously, be convenient to further research.
The technical solution of the utility model is: a kind of ultraviolet, infrared LED fingerprint detection system, this system comprises photoelectronic imaging module, target is detected, obtain preliminary two spectral image information, through conversion, strength-enhanced, image co-registration processing module, outputs in computer system, and is shown by display screen.Photoelectronic imaging module comprises infrared cmos imaging camera lens, ultraviolet/infrared LED exciter component, ultraviolet CCD imaging lens and ultraviolet imaging enhancer; Ultraviolet/infrared LED exciter component is placed in ultraviolet CCD imaging lens front end, connects ultraviolet imaging enhancer, finally connect infrared cmos imaging camera lens after ultraviolet CCD imaging lens; All camera lens light path coaxials and parallel placement.Described image co-registration processing module, ultraviolet/infrared double light path is carried out field of view (fov) registration, after ultraviolet target image and infrared background image A/D change, analyzed by main control chip TMS320DM642, calculate, synthesize, realize image co-registration, thus exactly analysis is positioned to image.Described ultraviolet/infrared LED exciter component comprises ultraviolet/infrared LED and is connected with ultraviolet imagery camera lens front end, and the arrangement of LED adopts loop configuration design, and make ultraviolet hot spot even, convenient operation, image quality is high.Photoelectronic imaging module comprises infrared lens and ultraviolet lens is double-colored integrated structure, and its video port all can pass through upper computer software configuration parameter, simplifies system architecture, reduces the complexity of hardware design, improve the reliability of system.
Ultraviolet, infrared LED, as exciting light source, are connected with integrated camera lens front end, and light source arrangement adopts loop configuration design, and make ultraviolet hot spot even, convenient operation, image quality is high; Target UV radiation and background stray light are irradiated on ultraviolet image booster through ultraviolet lens and optical filter, and through the enhancing of image intensifier, the coupling of light cone, light arrives in CCD image planes and carries out imaging; Ultraviolet light and bias light enter infrared lens, then imaging on the CMOS of rear end, and ultraviolet image is by filtering.
Ultraviolet, infrared pair of spectrum picture merge the two-path video signal being obtained Same Scene by two cover imaging systems, after the pre-service such as distortion, Nonuniformity Correction, Gain tuning, contrast strengthen, registration that input picture is disappeared, pass through image co-registration resume module special separately again, then show on a monitor.
The invention has the advantages that: the ratio increasing useful information in image in fingerprint recognition, effectively improve the sharpness of image, some characteristic that cannot show in single-sensor image is embodied; Improving the spatial resolution of figure, the content of increase spectral information, is the image information of improvement detection, classification, understanding, recognition performance acquisition complementation; Make the image information between multisensor be able to complementation, avoid the loss of learning caused in single-sensor for various reasons.
Accompanying drawing explanation
Fig. 1 is ultraviolet of the present invention, infrared LED fingerprint detection system block diagram;
Fig. 2 is ultraviolet of the present invention, infrared LED fingerprint detection system fusion treatment module frame chart;
Fig. 3 is ultraviolet of the present invention, infrared LED fingerprint detection system structural representation;
Fig. 4 is ultraviolet of the present invention, infrared LED fingerprint detection system test photo.
In figure, 1--infrared LED, 2--ultraviolet LED, 3--ultraviolet lens, 4--infrared lens, 5--CCD+CMOS mixing photoreceptor, 6--image co-registration module, 7--memory module, 8--I/O interface, 9--SD expansion card, 10--touch display screen, 11--integration fuselage, 12--power module.
Embodiment
Below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
A kind of ultraviolet, infrared LED fingerprint detection system as shown in Figure 1, comprise the parts such as ultraviolet, infrared LED light source and power module thereof, ultraviolet lens, image intensifier and CCD, CMOS, A/D conversion, image processing module, storage and display module.
1. exciting light source: adopt high-performance ultraviolet LED and infrared LED light source.Ultraviolet, infrared LED are connected with camera lens front end.Ultraviolet lens coordinates ultraviolet enhancer take pictures to vestige impression of the hand and search for, and the arrangement of LED adopts loop configuration design, and make ultraviolet hot spot even, convenient operation, image quality is high.
2. UV light path: target UV radiation and background stray light are irradiated on ultraviolet imaging enhancer through ultraviolet lens and optical filter, through the amplification of image intensifier, the coupling of light cone, light arrives in CCD image planes and carries out imaging.
3. infrared light path: ultraviolet light and bias light enter infrared lens, then imaging on the CMOS of rear end, ultraviolet image is by filtering.
Ultraviolet as shown in Figure 2, infrared image fusion treatment module are the key components realizing image co-registration.Ultraviolet/infrared double light path is carried out field of view (fov) registration by system, after ultraviolet target image and infrared background image A/D change, is analyzed by main control chip TMS320DM642, calculates, synthesizes, can realize image co-registration, thus position analysis to image exactly.
Fig. 3 is ultraviolet/infrared LED fingerprint detection system wiring layout.This system comprises infrared LED 1, ultraviolet LED 2, ultraviolet lens 3, infrared lens 4, CCD+CMOS mixing photoreceptor 5, image co-registration module 6, memory module 7, I/O interface 8, SD expansion card 9, touch display screen 10, integrated fuselage 11, power module 12.Integrated 2 double-colored camera lens 2,3 video ports all can pass through upper computer software configuration parameter, therefore the constrained input of video is efficiently completed, substantially seamless link can be regarded as, eliminate PLD sequential control circuit and the buffering of traditional circuit, make configuration, the playback of flexible and efficient seizure video and realize high-speed video circulation to move and simplified, thus improve processing speed to a great extent; Also simplify system architecture simultaneously, reduce the complexity of hardware design, improve the reliability of system.
Fig. 4 is ultraviolet/infrared LED fingerprint detection system test photo.Observe from figure, the colourless fingerprint on transparency glass plate can identify clearly, and background object is clear, and contrast is high.
Above-mentioned detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (5)
1. a ultraviolet, infrared LED fingerprint detection system, it is characterized in that: this system comprises photoelectronic imaging module, target is detected, obtain preliminary two spectral image information, through conversion, strength-enhanced, image co-registration processing module, outputs in computer system, and is shown by display screen.
2. ultraviolet according to claim 1, infrared LED fingerprint detection system, is characterized in that: photoelectronic imaging module comprises infrared cmos imaging camera lens, ultraviolet, infrared LED exciter component, ultraviolet CCD imaging lens and ultraviolet imaging enhancer; Ultraviolet/infrared LED exciter component is placed in ultraviolet CCD imaging lens front end, connects ultraviolet imaging enhancer, finally connect infrared cmos imaging camera lens after ultraviolet CCD imaging lens; All camera lens light path coaxials and parallel placement.
3. ultraviolet according to claim 1, infrared LED fingerprint detection system, it is characterized in that: described image co-registration processing module, ultraviolet, infrared double light path are carried out field of view (fov) registration, after ultraviolet target image and infrared background image A/D change, analyzed by main control chip TMS320DM642, calculate, synthesize, realize image co-registration, thus exactly analysis is positioned to image.
4. ultraviolet according to claim 2, infrared LED fingerprint detection system, it is characterized in that: described ultraviolet, infrared LED exciter component comprise ultraviolet, infrared LED is connected with ultraviolet imagery camera lens front end, the arrangement of LED adopts loop configuration design, make ultraviolet hot spot even, convenient operation, image quality is high.
5. ultraviolet according to claim 1, infrared LED fingerprint detection system, is characterized in that: photoelectronic imaging module comprises infrared lens and ultraviolet lens is double-colored integrated structure, and its video port is by upper computer software configuration parameter.
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| CN201510318649.2A CN104866845A (en) | 2015-06-11 | 2015-06-11 | Ultraviolet infrared LED fingerprint detection system |
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| CN201510318649.2A CN104866845A (en) | 2015-06-11 | 2015-06-11 | Ultraviolet infrared LED fingerprint detection system |
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| CN104866845A true CN104866845A (en) | 2015-08-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446059A (en) * | 2016-01-13 | 2016-03-30 | 宋志宏 | UV orientation reflection shooting apparatus |
| CN107169471A (en) * | 2017-06-07 | 2017-09-15 | 深圳市创艺工业技术有限公司 | A kind of fingerprint recognition system based on image co-registration |
| CN112197868A (en) * | 2020-10-12 | 2021-01-08 | 上海扬灵能源科技有限公司 | FPGA-based multi-sensor identification red thermal imager system and method |
Citations (2)
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| CN101540838A (en) * | 2009-04-24 | 2009-09-23 | 广州星博科仪有限公司 | Ultraviolet digital camera |
| CN201569838U (en) * | 2009-11-10 | 2010-09-01 | 贾志英 | Ultraviolet-infrared photographic device |
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2015
- 2015-06-11 CN CN201510318649.2A patent/CN104866845A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101540838A (en) * | 2009-04-24 | 2009-09-23 | 广州星博科仪有限公司 | Ultraviolet digital camera |
| CN201569838U (en) * | 2009-11-10 | 2010-09-01 | 贾志英 | Ultraviolet-infrared photographic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446059A (en) * | 2016-01-13 | 2016-03-30 | 宋志宏 | UV orientation reflection shooting apparatus |
| CN107169471A (en) * | 2017-06-07 | 2017-09-15 | 深圳市创艺工业技术有限公司 | A kind of fingerprint recognition system based on image co-registration |
| CN112197868A (en) * | 2020-10-12 | 2021-01-08 | 上海扬灵能源科技有限公司 | FPGA-based multi-sensor identification red thermal imager system and method |
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