CN209400410U - Criminal investigation examination of material evidence device based on high light spectrum image-forming technology - Google Patents
Criminal investigation examination of material evidence device based on high light spectrum image-forming technology Download PDFInfo
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- CN209400410U CN209400410U CN201822161357.4U CN201822161357U CN209400410U CN 209400410 U CN209400410 U CN 209400410U CN 201822161357 U CN201822161357 U CN 201822161357U CN 209400410 U CN209400410 U CN 209400410U
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Abstract
The utility model discloses a kind of criminal investigation examination of material evidence device based on high light spectrum image-forming technology, including high light spectrum image-forming mechanism, multispectral imaging mechanism, human-computer interaction component and controller.High light spectrum image-forming mechanism includes visible near-infrared imaging spectrometer, near infrared imaging spectrometer, reflecting mirror, light source, scanning translation stage and scanning translation stage driving mechanism.Multispectral imaging mechanism includes multispectral camera, optical filter wheel, the multiple optical filters being arranged on optical filter wheel, laser light source, LED light source, laser controller, optical filter wheel driving mechanism and objective table.Human-computer interaction component and controller communicate to connect.Controller is electrically connected with visible near-infrared imaging spectrometer, near infrared imaging spectrometer, multispectral camera, scanning translation stage driving mechanism, laser controller and optical filter wheel driving mechanism respectively.The utility model can obtain the image data and spectroscopic data of the high imaging quality of material evidence simultaneously, improve the distinguishing ability of material evidence.
Description
Technical field
The utility model relates to criminal investigation examination of material evidence devices.
Background technique
Examination of material evidence refers to suspecting associated with crime dramas object or substance utilization the methods of physically or chemically institute
The inspection of work.Optical technology plays an important role during examination of material evidence as a kind of lossless physical testing method.
Traditional optical imaging method can only record the Luminance Distribution information of object, and the inspection for difficult material evidence only records space
Distribution is not able to satisfy the examination requirements of difficult material evidence, and a large amount of optical characteristics that various chemical components are contained do not obtain
It sufficiently excavates and utilizes.Although traditional spectral analysis technique can record the spectral information of sample, the space of sample is sacrificed
Information.With the development of optical technology and information technology, spectral imaging technology provides form inspection and ingredient inspection combines
Chance, have the ability that its spatial distribution state is recorded according to different chemical composition spectrum true and accurate.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of criminal investigation material evidence based on high light spectrum image-forming technology
Verifying attachment can obtain the image data and spectroscopic data of the high imaging quality of material evidence simultaneously, and manufacturing cost is low.
The utility model embodiment provides a kind of criminal investigation examination of material evidence device based on high light spectrum image-forming technology, including height
Light spectrum image-forming mechanism, multispectral imaging mechanism, human-computer interaction component and controller；High light spectrum image-forming mechanism includes visible near-infrared
Imaging spectrometer, near infrared imaging spectrometer, reflecting mirror, light source, scanning translation stage and scanning translation stage driving mechanism；It can be seen that
Near infrared imaging spectrometer, near infrared imaging spectrometer, reflecting mirror and light source are separately positioned on the top of scanning translation stage;Light
Source is used to generate the white light being irradiated to the tested material evidence being placed on scanning translation stage；The quilt being placed on scanning translation stage
The light all the way for surveying material evidence reflection is directly transmitted to one of visible near-infrared imaging spectrometer and near infrared imaging spectrometer,
Be placed on scanning translation stage on tested material evidence reflection another way light be incident to after reflecting mirror reflects it is visible near-infrared at
As the other of spectrometer and near infrared imaging spectrometer；Translation stage driving mechanism is scanned for driving scanning translation stage flat
It moves；Multispectral imaging mechanism includes multispectral camera, optical filter wheel, the multiple optical filters being arranged on optical filter wheel, laser
Light source, LED light source, laser controller, optical filter wheel driving mechanism and objective table；Optical filter wheel be arranged in objective table just on
Side, multispectral camera are set to the surface of optical filter wheel, and laser light source and LED light source are separately positioned on the upper of objective table
Side, for irradiating the tested material evidence being placed on objective table；Laser controller be used for control laser light source transmitter trigger,
Transmitting stops and the intensity of transmitting laser, and optical filter wheel driving mechanism is for driving optical filter wheel to rotate, so that optical filter wheel
In one of optical filter be aligned the multispectral camera；Human-computer interaction component and controller communicate to connect, aobvious for information
Show and receive the input information of user；Controller respectively with visible near-infrared imaging spectrometer, near infrared imaging spectrometer, mostly light
Camera, scanning translation stage driving mechanism, laser controller and the electrical connection of optical filter wheel driving mechanism are composed, it is visible for receiving
The image data and visible near-infrared imaging that near infrared imaging spectrometer, near infrared imaging spectrometer and multispectral camera are sent
The spectroscopic data that spectrometer and near infrared imaging spectrometer are sent, and control scanning translation stage driving mechanism, laser controller
And the work of optical filter wheel driving mechanism.
The utility model at least has the following advantages:
1, the criminal investigation examination of material evidence device of the utility model embodiment is integrated with multi-spectral camera and high light spectrum image-forming in one
The high definition picture shooting of multiple wavelength, the available image information of high light spectrum image-forming and spectrum may be implemented in body, multi-spectral camera
Information, in such a way that multispectral and EO-1 hyperion combines, the limitation and bloom of image can only be obtained by breaching traditional file tester
The low limitation of spectral imaging technology image resolution ratio can obtain the image data and spectroscopic data of high imaging quality simultaneously；
2, the criminal investigation examination of material evidence device of the utility model embodiment uses visible near-infrared imaging spectrometer and close red
Outer imaging spectrometer realizes the acquisition of the visible imaging spectrometer data near infrared band, avoids broadband to optical splitter
The excessive demand of part；Simultaneously as the spectral imaging technology in the two wave bands is more mature, therefore whole device is more stable
Efficiently, and equipment cost is reduced, is conducive to plant engineering.
Detailed description of the invention
Fig. 1 shows the criminal investigation examination of material evidence device based on high light spectrum image-forming technology according to an embodiment of the present invention
Functional block diagram.
Fig. 2 shows the schematic diagrames according to the high light spectrum image-forming mechanism of an embodiment of the present invention.
Fig. 3 shows the schematic diagram of the multispectral imaging mechanism according to an embodiment of the present invention.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Spectral imaging technology sufficiently can excavate and utilize different material certainly while recording material evidence spatial distribution state
The distinctive spectral information of body realizes the complete examination to difficult material evidence qualitative, quantitative location information.By this forward position of imaging spectral
Technical application not only to material evidence information imaging but also can obtain the curve of spectrum of any material evidence point to criminal technique field
Information identifies that optical check provides form inspection and ingredient is examined for material evidence, and the one-to-one correspondence of profile information improves tradition
The detection efficiency and accuracy of detection method, it is also more standardized and scientific for the acquisition of material evidence information.
It please refers to Fig.1 to Fig.3, according to a kind of criminal investigation object based on high light spectrum image-forming technology of an embodiment of the present invention
Demonstrate,prove verifying attachment, including high light spectrum image-forming mechanism, multispectral imaging mechanism, human-computer interaction component 3, controller 4 and cabinet shell (figure
In be not shown), high light spectrum image-forming mechanism, multispectral imaging mechanism, human-computer interaction component 3 and controller 4 are arranged at the cabinet shell
In.
High light spectrum image-forming mechanism include visible near-infrared imaging spectrometer 11, near infrared imaging spectrometer 12, reflecting mirror 13,
Light source 14, scanning translation stage 15 and scanning translation stage driving mechanism 16.Visible near-infrared imaging spectrometer 11, near infrared imaging
Spectrometer 12, reflecting mirror 13 and light source 14 are separately positioned on the top of scanning translation stage 15.Light source 14 is for generating to being placed on
The white light that tested material evidence on scanning translation stage 15 is irradiated.It is placed on one of the tested material evidence reflection on scanning translation stage 15
Road light is directly transmitted to one of visible near-infrared imaging spectrometer 11 and near infrared imaging spectrometer 12, is placed on scanning
The another way light of tested material evidence reflection on translation stage 15 is incident to visible near-infrared imaging spectrometer after reflecting mirror reflects
The other of 11 and near infrared imaging spectrometer 12.Translation stage driving mechanism 16 is scanned for driving scanning translation stage 15 flat
It moves.
In the present embodiment, the light all the way for the tested material evidence reflection being placed on scanning translation stage 15 is directly transmitted to closely
The another way light of Infrared Imaging Spectrometer 12, the tested material evidence reflection being placed on scanning translation stage 15 is reflected through reflecting mirror 13
After be incident to visible near-infrared imaging spectrometer 11.In other words, near infrared imaging spectrometer 12 is directly directed at tested material evidence, can
See after near infrared imaging spectrometer 11 is turned back using reflecting mirror 13 and be directed at tested material evidence, in this way, makes visible close red
Outer imaging spectrometer 11 and near infrared imaging spectrometer 12 shoot same visual field.Optionally, reflecting mirror 13 is plane mirror.
The wave-length coverage of visible near-infrared imaging spectrometer 11 is 400nm-1000 nm, near infrared imaging spectrometer 12
Wave-length coverage is 900nm-1700nm, and the wave-length coverage of the hyperspectral imager after combination is 400nm-1700nm.Via two
After imaging spectrometer combination, to can get broadband high-spectral data cube.
When work, starting scanning translation stage 15 is translated, it is seen that near infrared imaging spectrometer 11 and near infrared imaging spectrometer
12 can obtain the image data and spectroscopic data of corresponding wave band simultaneously.
Multispectral imaging mechanism includes multispectral camera 21, optical filter wheel 22, the multi-disc filter being arranged on optical filter wheel 22
Mating plate (not shown), laser light source 24, LED light source 25, laser controller 26, optical filter wheel driving mechanism 27 and load
Object platform 28.The surface of objective table 28 is arranged in optical filter wheel 22, and multispectral camera 21 is set to the surface of optical filter wheel 22,
Laser light source 24 and LED light source 25 are separately positioned on the top of objective table 28, for irradiating the quilt being placed on objective table 28
Survey material evidence.Laser controller 26 is used to control the transmitter trigger of laser light source 24, transmitting stops and emits the strong of laser
Degree, optical filter wheel driving mechanism is for driving optical filter wheel 22 to rotate, so that one of optical filter pair in optical filter wheel 22
Neat multispectral camera 21.
In the present embodiment, the pixel of multispectral camera is more than or equal to 22,000,000.Multispectral camera 21 can be realized to shooting
The functions such as auto-focusing, manual focus, amplification, the diminution of material evidence image, and the image of shooting can be saved, preview, be deleted
It is operated except equal.The optical maser wavelength that laser light source 24 emits includes 355nm, 400nm, 450nm, 532nm, 805nm and 980nm.
The emission wavelength of LED light source 25 includes wavelengths of white light, 365nm, 440nm, 480nm, 530nm and 950nm.LED light source 25 is arranged
In the underface of optical filter wheel 22.Under the combination of laser light source 24 and optical filter wheel 22, multispectral camera 21 can shoot quilt
Material evidence is surveyed via laser irradiation or the image of excitation, under the combination of LED light source 25 and optical filter wheel 22, multispectral camera 21 can
Tested material evidence is shot via LED illumination or the image of excitation.
Further, multiple optical filters include end wavelength of light be 480nm edge filter, cut-off wavelength of light be
The edge filter of 530nm ends the edge filter that wavelength of light is 565nm, the cut-off filter that cut-off wavelength of light is 585nm
Mating plate ends the edge filter that wavelength of light is 720nm, the edge filter that cut-off wavelength of light is 780nm and cut-off
Wavelength of light is the edge filter of 950nm.For edge filter, the light less than optical filter cut-off wavelength of light can lead to
It crosses, the light greater than optical filter cut-off wavelength of light is prevented from.
Laser light source 24, LED light source 25 are used cooperatively with optical filter, it is possible to visualise the latent trace on tested material evidence.
Tested material evidence may have the addition of different inks, alter, or writing subsides due to of the remote past, these cannot be by naked eyes area
Point, different tested material evidences needs the light of different-waveband to be screened.
Human-computer interaction component 3 and controller 4 communicate to connect, and the input information of user is shown and received for information.
Controller 4 respectively with visible near-infrared imaging spectrometer 11, near infrared imaging spectrometer 12, multispectral camera 21,
Translation stage driving mechanism 16, laser controller 26 and optical filter wheel driving mechanism 27 is scanned to be electrically connected, it is visible for receiving
Image data that near infrared imaging spectrometer 11, near infrared imaging spectrometer 12 and multispectral camera 21 are sent and visible close red
The spectroscopic data that outer imaging spectrometer 11 and near infrared imaging spectrometer 12 are sent, and control scanning translation stage driving mechanism 16,
The work of laser controller 26 and optical filter wheel driving mechanism 27, and then realize to scanning translation stage 15, laser light source
24 and optical filter wheel 22 control.
In the present embodiment, human-computer interaction component 3 is touch display screen, and controller 4 is industrial personal computer.Optical filter wheel 22 has
Optical filter wheel ontology and the shaft being connected with optical filter wheel ontology, multiple optical filters are arranged on optical filter wheel ontology.Scanning
Translation stage driving mechanism is mainly made of first motor, shaft coupling and lead screw transmission mechanism.First motor by shaft coupling with
Lead screw connects, and the sliding block that setting is connected with scanning translation stage 15 on screw rod can drive when controller 4 controls first motor rotation
Translation stage 15 is scanned to translate.For optical filter wheel driving mechanism 27 mainly by the second motor form, controller 4 controls the rotation of the second motor
When, it can successively drive shaft and optical filter wheel ontology to rotate, thus the optical filter that switching is aligned with multispectral camera 21.
The criminal investigation examination of material evidence device of the utility model embodiment is integrated with multi-spectral camera and high light spectrum image-forming in one,
The high definition picture shooting of multiple wavelength, the available image information of high light spectrum image-forming and spectrum letter may be implemented in multi-spectral camera
Breath can obtain the image data and light of the high imaging quality of material evidence in such a way that multispectral and EO-1 hyperion combines simultaneously
Modal data, so as to deep excavation material evidence image and material evidence material composition, according to different material spectral signature accurate recording material evidence
Spatial distribution state, for material evidence identify optical check provide form examine and ingredient examine, improve the identification energy of material evidence
Power.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of criminal investigation examination of material evidence device based on high light spectrum image-forming technology, which is characterized in that including high light spectrum image-forming mechanism,
Multispectral imaging mechanism, human-computer interaction component and controller；
The high light spectrum image-forming mechanism include visible near-infrared imaging spectrometer, near infrared imaging spectrometer, reflecting mirror, light source,
Scan translation stage and scanning translation stage driving mechanism；The visible near-infrared imaging spectrometer, the near infrared imaging spectrum
Instrument, the reflecting mirror and the light source are separately positioned on the top of the scanning translation stage;The light source is for generating to placement
The white light that tested material evidence on the scanning translation stage is irradiated；The tested material evidence being placed on the scanning translation stage is anti-
The light all the way penetrated is directly transmitted to one of the visible near-infrared imaging spectrometer and the near infrared imaging spectrometer,
The another way light for the tested material evidence reflection being placed on the scanning translation stage is incident to described after reflecting mirror reflection
The other of visible near-infrared imaging spectrometer and the near infrared imaging spectrometer；The scanning translation stage driving mechanism is used
Stage translation is translated in the driving scanning；
The multispectral imaging mechanism includes multispectral camera, optical filter wheel, the multi-disc optical filtering being arranged on the optical filter wheel
Piece, laser light source, LED light source, laser controller, optical filter wheel driving mechanism and objective table；The optical filter wheel setting
In the surface of the objective table, the multispectral camera is set to the surface of the optical filter wheel, the laser light source
The top of the objective table is separately positioned on the LED light source, for irradiating the tested material evidence being placed on the objective table；
The laser controller is used to control the transmitter trigger of laser light source, transmitting stops and the intensity of transmitting laser, filters
Piece actuation is for driving optical filter wheel to rotate, so that one of optical filter alignment in optical filter wheel is described multispectral
Camera；
The human-computer interaction component and the controller communicate to connect, and the input information of user is shown and received for information；
The controller is translated with visible near-infrared imaging spectrometer, near infrared imaging spectrometer, multispectral camera, scanning respectively
Platform driving mechanism, laser controller and the electrical connection of optical filter wheel driving mechanism, for receiving visible near-infrared imaging spectral
The image data and visible near-infrared imaging spectrometer and near-infrared that instrument, near infrared imaging spectrometer and multispectral camera are sent
The spectroscopic data that imaging spectrometer is sent, and control the scanning translation stage driving mechanism, laser controller and optical filter
The work of actuation.
2. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that be placed on
The light all the way of tested material evidence reflection on the scanning translation stage is directly transmitted to the near infrared imaging spectrometer, is placed on
The another way light of tested material evidence reflection on the scanning translation stage is incident to described visible close after reflecting mirror reflection
Infrared Imaging Spectrometer.
3. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that it is described can
The wave-length coverage for seeing near infrared imaging spectrometer is 400nm-1000 nm, and the wave-length coverage of the near infrared imaging spectrometer is
900nm-1700nm。
4. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described
The underface of the optical filter wheel is arranged in LED light source.
5. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described more
Tablet filter include end wavelength of light be 480nm edge filter, cut-off wavelength of light be 530nm edge filter,
End the edge filter that wavelength of light is 565nm, the edge filter that cut-off wavelength of light is 585nm, cut-off wavelength of light
For 720nm edge filter, cut-off wavelength of light be 780nm edge filter and cut-off wavelength of light be 950nm's
Edge filter.
6. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described to swash
The optical maser wavelength of light device light source transmitting includes 355nm, 400nm, 450nm, 532nm, 805nm and 980nm；
The emission wavelength of the LED light source includes wavelengths of white light, 365nm, 440nm, 480nm, 530nm and 950nm.
7. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described more
The pixel of spectrum camera is more than or equal to 22,000,000.
8. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described anti-
Penetrating mirror is plane mirror.
9. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that the control
Device processed is industrial personal computer.
10. the criminal investigation examination of material evidence device based on high light spectrum image-forming technology as described in claim 1, which is characterized in that described
Human-computer interaction component is touch display screen.
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| CN201822161357.4U CN209400410U (en) | 2018-12-22 | 2018-12-22 | Criminal investigation examination of material evidence device based on high light spectrum image-forming technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739036A (en) * | 2020-07-22 | 2020-10-02 | 吉林大学 | Hyperspectrum-based file handwriting counterfeiting detection method |
| CN112464017A (en) * | 2021-01-27 | 2021-03-09 | 中国工程物理研究院流体物理研究所 | Infrared material evidence extractor, spectral feature library establishing method and utilization method |
| CN112683798A (en) * | 2020-12-14 | 2021-04-20 | 长春长光辰谱科技有限公司 | Identification and identification system based on hyperspectral imaging camera |
| CN115629507A (en) * | 2022-11-07 | 2023-01-20 | 广东南天司法鉴定所 | Method for identifying authenticity of handwriting and patterns of file |
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2018
- 2018-12-22 CN CN201822161357.4U patent/CN209400410U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739036A (en) * | 2020-07-22 | 2020-10-02 | 吉林大学 | Hyperspectrum-based file handwriting counterfeiting detection method |
| CN112683798A (en) * | 2020-12-14 | 2021-04-20 | 长春长光辰谱科技有限公司 | Identification and identification system based on hyperspectral imaging camera |
| CN112464017A (en) * | 2021-01-27 | 2021-03-09 | 中国工程物理研究院流体物理研究所 | Infrared material evidence extractor, spectral feature library establishing method and utilization method |
| CN115629507A (en) * | 2022-11-07 | 2023-01-20 | 广东南天司法鉴定所 | Method for identifying authenticity of handwriting and patterns of file |
| CN115629507B (en) * | 2022-11-07 | 2023-11-24 | 广东南天司法鉴定所 | Method for identifying authenticity of file writing and patterns |
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