CN104330363A - Spectral imaging analysis system, imaging and analyzing method using same - Google Patents
Spectral imaging analysis system, imaging and analyzing method using same Download PDFInfo
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- CN104330363A CN104330363A CN201410595439.3A CN201410595439A CN104330363A CN 104330363 A CN104330363 A CN 104330363A CN 201410595439 A CN201410595439 A CN 201410595439A CN 104330363 A CN104330363 A CN 104330363A
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Abstract
The invention provides a spectral imaging analysis system, and an imaging and analyzing method using the same. The system comprises a liquid crystal tunable filter module, a light source, a work bench, a control box and a computer, wherein the liquid crystal tunable filter module comprises an image sensor, an automatic zooming and focusing lens and a liquid crystal tunable filter optical module, and is used for generating an image of a detected object and transmitting to the computer; the light source is used for irradiating the detected object on the work bench; the work bench is used for placing the detected object; the control box is used for controlling the light source to be turned on and off and the liquid crystal tunable filter module to drive or stop driving, receiving a filter band value transmitted by the computer and controlling a filter band of the liquid crystal tunable filter optical module; and the computer is used for adjusting the filter band value of the liquid crystal tunable filter optical module and transmitting to the control box, adjusting zooming and focusing of the automatic zooming and focusing lens, receiving the image transmitted by the image sensor and analyzing the image through the preset application to obtain a spectral image. According to the system, a high-quality spectral image can be quickly and accurately obtained.
Description
Technical field
The present invention relates to light spectrum image-forming field, particularly a kind of spectral imaging analysis system, and use this spectral imaging analysis system imaging and carry out the method for spectral analysis.
Background technology
At present, spectrometric instrument is widely used in fields such as scientific experiment, industrial and agricultural production, national defence, but most spectrometric instrument bulky and complex structure, the restriction of the condition such as place, environment can be subject to during use, the image of each Spatial Dimension of checking matter can not be obtained flexibly in use and carry out spectral analysis, based on this, occur finishing the miniature imaging spectrometer of synthesized image technology and spectral analysis technique, it is little, lightweight and can obtain the feature of the more space dimension information of checking matter flexibly that it has volume.
But existing micro spectral imaging system is for adopting light splitting filter plate, prism or transmission grating to be after beam splitter carries out filtering, ccd image sensor obtains the image of a certain specific wavelength, use the image of which acquisition after carrying out spectral analysis, the spectrum picture obtained is relatively scattered and can not obtain spectral characteristic that is complete, relative broad range, and, owing to there are mechanical vibration in the process obtaining image, be easy to have influence on the accuracy of the spectrum picture formed after carrying out spectral analysis based on this image.
In a word, how better realize fast, accurately and the high-quality image of acquisition of mechanical vibration and carry out spectral analysis to obtain high-quality spectrum picture based on this image, become the technical matters solved in the urgent need to those skilled in the art.
Summary of the invention
The invention provides a kind of spectral imaging analysis system, use this system imaging and carry out the method for spectral analysis, this can realize fast, accurately and the high-quality image of acquisition of mechanical vibration and carry out spectral analysis to obtain high-quality spectrum picture based on this image.
According to an aspect of the present invention, the present invention proposes a kind of spectral imaging analysis system, comprising:
Liquid crystal tunable filter module, for generating image corresponding to checking matter and sending computing machine to, wherein, described liquid crystal tunable filter module comprises the imageing sensor, automatically change focus lens and the liquid crystal tunable filter optical module that connect successively;
At least two light sources, for irradiating the checking matter that worktable is placed;
Worktable, for placing checking matter;
Control box, for the open and close and liquid crystal tunable filter module that control light source driving and stop driving, and for the filtering band value that the preset application in receiving computer is transmitted, and control the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received;
Computing machine, preset application is installed in advance, for being adjusted by the filtering band value of described preset application to liquid crystal tunable filter optical module and sending described control box to, for adjusting zoom and the focusing of described automatic change focus lens, and for receiving image that described imageing sensor sends and carrying out preset spectral analysis by described preset application to described image, to obtain corresponding spectrum picture;
Described liquid crystal tunable filter module to be arranged at directly over described worktable and higher than described worktable preset height, above the side that described light source arranges described worktable in an opposing fashion and be presetting angle with described worktable;
Described imageing sensor and described automatic change focus lens are connected with described compunication respectively, described liquid crystal tunable filter optical module and described control box communicate to connect, described control box is connected with described compunication, and described light source is electrically connected with described control box.
Further, in described liquid crystal tunable filter module, described imageing sensor is positioned at top, and described automatic change focus lens is positioned at centre, and described liquid crystal tunable filter optical module is positioned at below.
Further, in described liquid crystal tunable filter module, described imageing sensor is positioned at top, and described liquid crystal tunable filter optical module is positioned at centre, and described automatic change focus lens is positioned at below.
Further, it is characterized in that, described imageing sensor is Scientific Grade black white image sensor, be provided with micro-stepping motors in described automatic change focus lens, described liquid crystal tunable filter optical module is the liquid crystal tunable filter that the tuning filtering for carrying out nano-precision to the spectrum of incidence controls.
Further, described light source is the high and light source that spectrum continuity is strong of two luminescence efficiencys.
Further, described control box is provided with light source switch button and liquid crystal tunable filter driving governor shift knob, comprises light source controller and liquid crystal tunable filter driving governor in described control box,
Described light source switch button is electrically connected on described light source controller, described light source controller is electrically connected on described light source, described liquid crystal tunable filter driving governor shift knob is electrically connected on described liquid crystal tunable filter driver, and described liquid crystal tunable filter drive communication is connected to described liquid crystal tunable filter optical module.
Further, described liquid crystal tunable filter module is arranged at higher than described worktable 50-70 centimetre.
According to a further aspect in the invention, also proposed and a kind ofly use above-mentioned spectral imaging analysis system imaging and carry out the method for spectral analysis, described method comprises:
Open light source by controller and drive liquid crystal tunable filter optical module, so as by the checking matter that is positioned in advance on worktable by the irradiation back reflection of light source to liquid crystal tunable filter module;
Send controller to by the filtering band value of preset application adjustable liquid crystal display tunable optic filter optical module, controller controls the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received;
The zoom and focusing that automatically become focus lens is regulated by preset application;
Based on filtering wave band and automatic zoom and the focusing becoming focus lens of the liquid crystal tunable filter optical module determined, generate image corresponding to checking matter by imageing sensor and be also sent to computing machine;
Image to be analyzed is determined by preset being applied in the image received;
By preset application, preset spectral analysis is carried out to generate spectrum picture to described image to be analyzed.
According to specific embodiment provided by the invention, the invention discloses following technique effect:
Arrange in the spectrum picture Image analysis system of the embodiment of the present invention and comprise imageing sensor, the liquid crystal tunable filter module of automatic change focus lens and liquid crystal tunable filter optical module, irradiate the light source of checking matter, place the worktable of checking matter, control box and the computing machine being provided with preset application, when using this system imaging and carry out spectral analysis, adjust by the filtering band value of preset application to liquid crystal tunable filter optical module and send controller to, the filtering wave band of liquid crystal tunable filter optical module work is controlled by controller, the zoom and focusing that automatically become focus lens is regulated by preset application, checking matter passes through light source irradiation back reflection to liquid crystal tunable filter module, based on filtering wave band and automatic zoom and the focusing becoming focus lens of the liquid crystal tunable filter optical module determined, generate image corresponding to checking matter by imageing sensor and be sent to computing machine, so that computing machine receives picture by preset interface applications and compares to determine image to be analyzed, and preset spectral analysis is carried out to generate spectrum picture to image to be analyzed, this spectral imaging analysis system architecture is simple, convenient operation, and system bulk is little, overall weight is light, to be more convenient for mobile operating as required, use this spectral imaging analysis system can be quick, the high-quality image of acquisition that accurate and mechanical is vibrated, and then can be quick, obtain accurately carrying out the high-quality spectrum picture after spectral analysis based on this image.
Certainly, implement arbitrary product of the present invention might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of single spectrum Image analysis system embodiment of the present invention;
Fig. 2 is that the present invention uses spectral imaging analysis system imaging and carries out the schematic flow sheet of the embodiment of the method for spectral analysis.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the application's protection.
Referring to Fig. 1, it is the structural representation of spectral imaging analysis system embodiment of the present invention.
In the present embodiment, this spectral imaging analysis system, comprising: liquid crystal tunable filter module 11, at least two light sources 12, worktable 13, control box 14 and computing machines 15.
Wherein, liquid crystal tunable filter module 11 comprises the imageing sensor 111, automatically change focus lens 112 and the liquid crystal tunable filter optical module 113 that connect successively, to form accurate optical imaging system.
This imageing sensor 111 communicates to connect with computing machine 15, for generating image corresponding to checking matter and sending image to computing machine 15; Automatic change focus lens 112 communicates to connect with computing machine 15, to realize being adjusted the focusing and zoom that automatically become focus lens 112 by the preset application in computing machine; Liquid crystal tunable filter optical module 113 communicates to connect with liquid crystal tunable filter driver 142 in control box 14, and control box 14 and computing machine 15 communicate to connect, so that user adjusts the filtering band value of liquid crystal tunable filter optical module 113 and sends control box 14 in the preset application of computing machine 15, then the filtering wave band that liquid crystal tunable filter optical module 113 works is controlled according to receiving filtering band value by control box 14.
Concrete, checking matter is after the irradiation back reflection by light source is on liquid crystal tunable filter module 11, based on the filtering wave band of the liquid crystal tunable filter optical module 113 determined and the zoom and the focusing that automatically become focus lens 112, image corresponding to checking matter can be generated by imageing sensor 111 and be sent to computing machine.
Further, imageing sensor can be Scientific Grade black and white charge coupled cell (CCD, Charge-coupled Device) imageing sensor; Micro-stepping motors can be provided with, better to carry out autozoom and focusing according to real image in automatic change focus lens; Liquid crystal tunable filter optical module can be the liquid crystal tunable filter (LCTF, Liquid Crystal Tunable Filte) that the tuning filtering for carrying out nano-precision to the spectrum of incidence controls.
In liquid crystal tunable filter module 11, imageing sensor 111, automatically change focus lens 112 and liquid crystal tunable filter optical module 113 can the following two kinds structure be arranged.
A kind of structure is, imageing sensor 111 is positioned at top, automatic change focus lens 112 is positioned at centre, liquid crystal tunable filter optical module 113 is positioned at below, and imageing sensor 111 is connected to change focus lens 112 automatically, automatically becomes focus lens 112 and be connected to liquid crystal tunable filter optical module 113, that is, relative to checking matter, the position of above-mentioned three is followed successively by liquid crystal tunable filter optical module 113, automatically becomes focus lens 112, imageing sensor 111.
This kind of structure is directly connected with imageing sensor 111 for automatically becoming focus lens 112, zoom and focusing can be regulated more accurately, make imaging more clear, but, because liquid crystal tunable filter optical module 113(is as LCTF) there is certain thickness usually, have optical energy loss when the clear aperture automatically becoming focus lens 112 is greater than the aperture of LCTF and produces vignetting, and the weight of LCTF also can affect the design of whole system, for ensureing light path coaxial, also need in the case of necessary to arrange a structure supported LCTF.
Another kind of structure is, imageing sensor 111 is positioned at top, liquid crystal tunable filter optical module 113 is positioned at centre, automatic change focus lens 112 is positioned at below, and imageing sensor 111 is connected to liquid crystal tunable filter optical module 113, liquid crystal tunable filter optical module 113 is connected to and automatically becomes focus lens 112, that is, relative to checking matter, the position of above-mentioned three is followed successively by and automatically becomes focus lens 112, liquid crystal tunable filter optical module 113, imageing sensor 111.
This kind of structure is that liquid crystal tunable filter optical module 113(is as LCTF) be directly connected in imageing sensor 111, because the beam size automatically become between focus lens 112 and the focal plane of worktable is less than the entrance pupil bore automatically becoming focus lens 112 usually, therefore, the bore of LCTF can be smaller a little, but because existing automatic change focus lens is all design according to the situation that imageing sensor is directly connected, add after having certain thickness LCTF between automatic change focus lens and imageing sensor, image can be made to produce distortion, aberration etc., and the magnification changing whole system may be caused, the problem such as the scale value of camera lens is inaccurate.
In this embodiment, light source 12 is the high and light source that spectrum continuity is strong of two luminescence efficiencys, can be used for irradiating the checking matter source that worktable is placed.
Worktable 13, then can be used for placing checking matter 131.
Control box 14, can be used for the open and close controlling light source 12, and the driving of liquid crystal tunable filter module 11 and stop drive, and can be used for the filtering band value that the preset application in receiving computer 15 transmits, and according to the filtering wave band that the liquid crystal tunable filter optical module 113 that the filtering band value received controls in liquid crystal tunable filter module 11 works.
Wherein, light source switch button and liquid crystal tunable filter driving governor shift knob outside this control box 14, can be provided with, in this control box 14, light source controller 141 and liquid crystal tunable filter driving governor 142 can be provided with.
This light source switch button is electrically connected on light source controller 141, and light source controller 141 is electrically connected on light source 12, when after user's triggering voltage shift knob, then can start light source controller 141 to control unlatching or the closedown of light source 12.
Liquid crystal tunable filter driving governor shift knob is electrically connected on liquid crystal tunable filter driver 142, liquid crystal tunable filter driver 142 is communicatively coupled to liquid crystal tunable filter optical module 113, after user triggers liquid crystal tunable filter driving governor shift knob, then can start liquid crystal tunable filter driver 142 send drive singal to the humorous wavelength filtering optical module 113 of liquid crystal tunable or stop drive singal, to control the driving of the humorous wavelength filtering optical module 113 of liquid crystal tunable or to stop driving.
Computing machine 15, preset application can be installed in advance, this computing machine 15 can be used for being adjusted by the filtering band value of preset application to liquid crystal tunable filter optical module 113 and being sent filtering band value to control box 14, to be controlled by the filtering wave band of humorous wavelength filtering optical module 113 work of the 142 pairs of liquid crystal tunables of the liquid crystal tunable filter driver in control box 14;
Can be used for adjusting zoom and the focusing of change focus lens automatically, to determine automatically to become focusing and focusing of focus lens 112 work;
Also can be used for receiving the image that sends of imageing sensor 111 and carrying out spectral analysis preset in preset application by the image that preset interface applications receives, to obtain corresponding spectrum picture.
In this embodiment, liquid crystal tunable filter module 113 to be arranged at directly over worktable 13 and higher than worktable 13 preset height, preferably, liquid crystal tunable filter module can be arranged at higher than worktable 50-70 centimetre, to realize preferably imaging effect.
Above the side that light source 12 can be arranged at worktable 13 in an opposing fashion and with worktable 13 in presetting angle, this light source 12 can be arranged according to actual conditions relative to the height of worktable 13 and angle.
Referring to Fig. 2, use spectral imaging analysis system imaging for the present invention and carry out the schematic flow sheet of the embodiment of the method for spectral analysis.
In this embodiment, the method, comprises the steps:
S201, opens light source by controller and drives liquid crystal tunable filter optical module, so as by the checking matter that is positioned in advance on worktable by the irradiation back reflection of light source to liquid crystal tunable filter module.
Concrete, by the light source switch button outside trigger controller, control the unlatching of light source with the light source controller in start-up connector; By the liquid crystal tunable filter driving governor shift knob outside trigger controller, control the driving of liquid crystal tunable filter optical module with the liquid crystal tunable filter driving governor in start-up connector.
S202, send controller to by the filtering band value of the preset application adjustable liquid crystal display tunable optic filter optical module in computing machine, controller controls the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received.
This preset application can comprise the preset filtering band setting page, the control that filtering band value is adjusted or arranged can be comprised in this page, can adjust in control or filtering band value is set, then send this filtering band value to controller, controller then can control the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received.
S203, regulates the zoom and focusing that automatically become focus lens by the preset application in computing machine.
This preset application can comprise preset zoom and the focusing adjustment page, zoom can be comprised in this page control is set and focusing arranges control, can be that zoom to arrange in control adjustment or arranges zoom level, can arrange in control in focusing and adjust or arrange coke number, to realize automatically becoming the zoom of focus lens and the adjustment of focusing.
S204, based on filtering wave band and automatic zoom and the focusing becoming focus lens of the liquid crystal tunable filter optical module of (namely the determining) after adjustment in S202 and S203, generate image corresponding to checking matter by imageing sensor, and the image of this generation is sent to computing machine.
S205, determines image to be analyzed by preset being applied in the image received.
This preset application can comprise the preset determination image to be analyzed page, in this page such as by the operation such as synthesis, optimization with in the image received, determine quality preferably one or several sheets image using as image to be analyzed.
S206, carries out preset spectral analysis to generate spectrum picture by preset application to the image to be analyzed determined in S205.
Arrange in the spectrum picture Image analysis system of the embodiment of the present invention and comprise imageing sensor, the liquid crystal tunable filter module of automatic change focus lens and liquid crystal tunable filter optical module, irradiate the light source of checking matter, place the worktable of checking matter, control box and the computing machine being provided with preset application, when using this system imaging and carry out spectral analysis, adjust by the filtering band value of preset application to liquid crystal tunable filter optical module and send controller to, the filtering wave band of liquid crystal tunable filter optical module work is controlled by controller, the zoom and focusing that automatically become focus lens is regulated by preset application, checking matter passes through light source irradiation back reflection to liquid crystal tunable filter module, based on filtering wave band and automatic zoom and the focusing becoming focus lens of the liquid crystal tunable filter optical module determined, generate image corresponding to checking matter by imageing sensor and be sent to computing machine, so that computing machine receives picture by preset interface applications and compares to determine image to be analyzed, and preset spectral analysis is carried out to generate spectrum picture to image to be analyzed, this spectral imaging analysis system architecture is simple, convenient operation, and system bulk is little, overall weight is light, to be more convenient for mobile operating as required, use this spectral imaging analysis system can be quick, the high-quality image of acquisition that accurate and mechanical is vibrated, and then can be quick, obtain accurately carrying out the high-quality spectrum picture after spectral analysis based on this image.
The spectrum picture Image analysis system of the embodiment of the present invention, the fields such as experimental chemistry, clinical medicine detection, industry monitoring, historical relic identification, Forensic science can be widely used in, specifically can be used for image dynamic process, writing adds identification, cover evidence reduction, the writing extraction of seal background, the finger mark extraction etc. of complex background.
Above to spectrum picture Image analysis system provided by the present invention, use this spectrum picture Image analysis system imaging and the method for carrying out spectral analysis is described in detail, apply specific case herein to set forth the principle of the application and embodiment, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications.In sum, this description should not be construed as the restriction to the application.
Claims (8)
1. a spectral imaging analysis system, is characterized in that, comprising:
Liquid crystal tunable filter module, for generating image corresponding to checking matter and sending computing machine to, wherein, described liquid crystal tunable filter module comprises the imageing sensor, automatically change focus lens and the liquid crystal tunable filter optical module that connect successively;
At least two light sources, for irradiating the checking matter that worktable is placed;
Worktable, for placing checking matter;
Control box, for the open and close and liquid crystal tunable filter module that control light source driving and stop driving, and for the filtering band value that the preset application in receiving computer is transmitted, and control the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received;
Computing machine, preset application is installed in advance, for being adjusted by the filtering band value of described preset application to liquid crystal tunable filter optical module and sending described control box to, for adjusting zoom and the focusing of described automatic change focus lens, and for receiving image that described imageing sensor sends and carrying out preset spectral analysis by described preset application to described image, to obtain corresponding spectrum picture;
Described liquid crystal tunable filter module to be arranged at directly over described worktable and higher than described worktable preset height, above the side that described light source arranges described worktable in an opposing fashion and be presetting angle with described worktable;
Described imageing sensor and described automatic change focus lens are connected with described compunication respectively, described liquid crystal tunable filter optical module and described control box communicate to connect, described control box is connected with described compunication, and described light source is electrically connected with described control box.
2. spectral imaging analysis system as claimed in claim 1, it is characterized in that, in described liquid crystal tunable filter module, described imageing sensor is positioned at top, described automatic change focus lens is positioned at centre, and described liquid crystal tunable filter optical module is positioned at below.
3. spectral imaging analysis system as claimed in claim 1, it is characterized in that, in described liquid crystal tunable filter module, described imageing sensor is positioned at top, described liquid crystal tunable filter optical module is positioned at centre, and described automatic change focus lens is positioned at below.
4. spectral imaging analysis system as claimed in claim 2 or claim 3, it is characterized in that, described imageing sensor is Scientific Grade black white image sensor, be provided with micro-stepping motors in described automatic change focus lens, described liquid crystal tunable filter optical module is the liquid crystal tunable filter that the tuning filtering for carrying out nano-precision to the spectrum of incidence controls.
5. spectral imaging analysis system as claimed in claim 1, is characterized in that, described light source is the high and light source that spectrum continuity is strong of two luminescence efficiencys.
6. spectral imaging analysis system as claimed in claim 1, it is characterized in that, described control box is provided with light source switch button and liquid crystal tunable filter driving governor shift knob, comprises light source controller and liquid crystal tunable filter driving governor in described control box
Described light source switch button is electrically connected on described light source controller, described light source controller is electrically connected on described light source, described liquid crystal tunable filter driving governor shift knob is electrically connected on described liquid crystal tunable filter driver, and described liquid crystal tunable filter drive communication is connected to described liquid crystal tunable filter optical module.
7. spectral imaging analysis system as claimed in claim 1, it is characterized in that, described liquid crystal tunable filter module is arranged at higher than described worktable 50-70 centimetre.
8. use spectral imaging analysis system imaging as described in claim 1 to 7 and carry out the method for spectral analysis, it is characterized in that, described method comprises:
Open light source by controller and drive liquid crystal tunable filter optical module, so as by the checking matter that is positioned in advance on worktable by the irradiation back reflection of light source to liquid crystal tunable filter module;
Send controller to by the filtering band value of preset application adjustable liquid crystal display tunable optic filter optical module, controller controls the filtering wave band of liquid crystal tunable filter optical module work according to the filtering band value received;
The zoom and focusing that automatically become focus lens is regulated by preset application;
Based on filtering wave band and automatic zoom and the focusing becoming focus lens of the liquid crystal tunable filter optical module determined, generate image corresponding to checking matter by imageing sensor and be also sent to computing machine;
Image to be analyzed is determined by preset being applied in the image received;
By preset application, preset spectral analysis is carried out to generate spectrum picture to described image to be analyzed.
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