CN107367885A - A kind of super spectrum camera based on linear optical filter - Google Patents
A kind of super spectrum camera based on linear optical filter Download PDFInfo
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- CN107367885A CN107367885A CN201710569934.0A CN201710569934A CN107367885A CN 107367885 A CN107367885 A CN 107367885A CN 201710569934 A CN201710569934 A CN 201710569934A CN 107367885 A CN107367885 A CN 107367885A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 67
- 238000001228 spectrum Methods 0.000 title claims abstract description 57
- 238000012545 processing Methods 0.000 claims abstract description 29
- 238000000701 chemical imaging Methods 0.000 claims abstract description 7
- 239000003086 colorant Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000003595 spectral effect Effects 0.000 abstract description 11
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 241000143252 Idaea infirmaria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000985 reflectance spectrum Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/006—Filter holders
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Image Input (AREA)
Abstract
The invention belongs to image processing field, specially a kind of super spectrum camera based on linear optical filter.The present invention is made up of camera lens, linear optical filter, ccd image sensor and image processing system.The reflection light of subject produces each pixel signal of the object under special spectrum after camera lens and the light splitting of linear optical filter, by ccd image sensor, passes to image processing system；By the position of linear adjustment optical filter, image processing system is obtained the full spectral information of subject all pixels point, finally synthesized using image processing system, so as to realize the Hyper spectral Imaging to subject.Present invention operation is simple, and the measurement of rapid and handy formula can be achieved, and can realize the full light spectrum image-forming of any object, avoids the image error brought by metamerism.
Description
Technical field
The invention belongs to image processing field, specially a kind of super spectrum camera based on linear optical filter.
Background technology
Nowadays full spectrum camera technique is widely used in medical treatment, agricultural, military, the direction such as tourism.Linear optical filter is made
It is portable to be a kind of small-sized, centre wavelength linearly transformable light-dividing device in spectrum analysis have it is quite varied
Prospect.It is a kind of practical using full light spectrum image-forming of the spectral analysis technique for realizing subject in image processing field
Feasible technical scheme.Hyper spectral Imaging technology refers to pair that not only can be later using this linear optical filter and camera lens
The three-dimensional spatial information of image information, while can also obtain each pixel every 1 ~ 10nm in full spectral region spectral energy point
Cloth information.The innovative point of this camera technique is to realize that the quick of reflectance spectrum is divided at different wavelengths to subject
Analysis.Traditional beam splitting system of the super spectrum camera based on gating devices can make whole instrument very huge, and be difficult to
Quick analysis under continuous spectrum.
Therefore technically it is contemplated that replacing gating devices with a kind of linear variable optical filter.This linear variable
Wave filter is a kind of along a wedge shaped thickness distribution in direction and another direction thin film filter in uniform thickness.Therefore,
If it is designed to a bandpass filter and optimizes its good thickness distribution, then the centre wavelength of its passband can be
Linear change on one direction.CCD can be utilized to scheme based on the super spectrum camera that this linear variable optical filter makes
As sensor quickly obtains the full spectral information of subject all pixels point.Compared with grating, the advantage of this instrument is
Extremely compact, low cost, light transmissive is high, and stability is high, and spectral region is more extensive, and can solve what metamerism was brought
Image error.
Importantly, the pick-up lens of mobile phone can be used, by the software of design specialized, as long as additional ccd image
The minimal amount of parts such as sensor, linear optical filter, you can realize to the full light spectrum image-forming of subject, while can also should
Video camera is placed on unmanned plane, and remote control is realized to super spectrum camera using wired or wireless network.
Therefore, this super spectrum camera based on linear optical filter is with a wide range of applications.
The content of the invention
The invention belongs to image processing field, and its object is to propose a kind of achievable quick shooting, and measurement error is small
A kind of super spectrum camera based on linear optical filter.
A kind of super spectrum camera based on linear optical filter proposed by the present invention, by camera lens, sliding bar, linear
Optical filter, ccd image sensor and image processing system composition；
Described camera lens, which are erect, to be fixed on the axis of described super spectrum camera；
Described sliding bar is between described camera lens and described ccd image sensor, and perpendicular to described
Super spectrum camera axis；
Described linear optical filter is placed on described sliding bar, and can be on sliding bar along perpendicular to described ultraphotic spectrum
Arbitrarily move in the direction of video camera axis；By controlling the axial location of sliding bar linear adjustment optical filter, can exist respectively
The picture of different colours is showed on the diverse location of ccd image sensor；
Described ccd image sensor is fixed on after described linear optical filter, is erect and is composed shooting perpendicular to described ultraphotic
The axis of machine, the light sent from subject each point after camera lens reflect can be received；
The end that described image processing system is placed in inside described super spectrum camera, or be placed in outside super spectrum camera
Portion；
The light inlet of the light-emitting window aligned with camera camera lens of subject, the light-emitting window of camera lens are directed at linear optical filter
Light inlet, the light-emitting window alignment ccd image sensor of linear optical filter, ccd image sensor connection image processing system.
In the present invention, the camera lens are DV camera lens or mobile phone camera camera lens.Being mainly used in will be by
Object is taken the photograph to be presented on the diverse location of ccd image sensor by the filtergram of full spectrum caused by linear optical filter.
In the present invention, by adjusting position of the sliding bar on described super spectrum camera axis, control described
Linear axial location of the optical filter on sliding bar, so as to change the relative position of linear optical filter and camera lens, obtain
The full spectral information of subject all pixels point, realizes the Hyper spectral Imaging to subject.
In the present invention, image processing system is using Computer Image Processing module, handset image processing software or digital phase
It is any in the picture processing chip of machine, and be connected by cable network or wireless network with the ccd image sensor.Only need
Add the minimal amount of parts such as ccd image sensor, linear optical filter, you can under the conditions of conventional picture pick-up device, realize
Spectrum test and analysis to sample, thus the operation of portability can be realized.
In the present invention, super spectrum camera, which places ground, includes unmanned plane, including celestial body surface detector it is various nobody drive
Sail mechanically, it is automatic or pass through to be remotely controlled and carry out ultraphotic spectrum shooting.
In the present invention, the linear optical filter be one kind by optimizing thickness distribution after, bandpass center in one direction
Wavelength is linearly distributed at equal intervals, and adjacent center wavelength profile is intensive, and interval only has 1 ~ 10nm one kind is linear to filter
Piece.
The Hyper spectral Imaging technology proposed in the present invention refers to not only may be used using this linear optical filter and camera lens
The three-dimensional spatial information of later object information, while can also obtain each pixel every 1 ~ 10nm in full spectral region light
Spectral power distribution information.
The region that the light that linear optical filter of the present invention includes the corresponding complete various wavelength of spectrum passes through, each region edge
The one-dimensional arrangement in direction perpendicular to the axis of described super spectrum camera.
The heretofore described linear optical filter being placed on sliding bar, by changing linear optical filter and pick-up lens
Relative position, successively obtain subject all pixels point full spectral information；The reflection light of subject passes through camera lens
After being divided with linear optical filter, each pixel signal of the object under special spectrum is produced by ccd image sensor, passes to figure
As processing system, then the position by linear adjustment optical filter, image processing system is set to obtain subject all pixels point
Full spectral information, is finally synthesized using image processing system, so as to realize the Hyper spectral Imaging to subject.
The preceding beneficial effect of the present invention is：The present invention, can will be described by wired and wireless network means of communication
Super spectrum camera is placed on including unmanned plane, including celestial body surface detector it is various it is unpiloted mechanically, it is automatic or
By being remotely controlled means, ultraphotic spectrum shooting is carried out in the place that some mankind can not arrive at；By linear optical filter relative to tradition
The miniaturization advantage of grating, video camera volume is substantially reduced, reduces space transportation cost, provided under conditions of minimum volume
The colored shooting of fine definition.
Brief description of the drawings
Fig. 1 is the ultraphotic spectrum camera chain schematic diagram based on linear optical filter in the present invention.
Fig. 2 is the structural representation of linear optical filter of the invention.
Label in figure：1 is subject, and 2 be camera lens, and 3 be linear optical filter, and 4 be sliding bar, and 5 be ccd image
Sensor, 6 be image processing system, and 7 be upper reflective coating, and 8 be wall, and 9 be lower reflective coating, and 10 be substrate.
Embodiment
The present invention is further illustrated below by embodiment combination accompanying drawing.
Embodiment 1：
As shown in figure 1, described device is by camera lens 2, sliding bar 4, linear optical filter 3, ccd image sensor 5 and image
Processing system 6 forms；Described camera lens 2, which are erect, to be fixed on the axis of described super spectrum camera；Described
Sliding bar 4 is placed between described camera lens 2 and described ccd image sensor 5, and shooting is composed perpendicular to described ultraphotic
The axis of machine；Described linear optical filter 3 is placed on described sliding bar 4, can be on sliding bar 4 along perpendicular to institute
Arbitrarily move in the direction for the super spectrum camera axis stated；Described ccd image sensor 5 is fixed on described linear optical filtering
After piece 3, erect perpendicular to the axis of described super spectrum camera, can receive after the refraction of camera lens 2
The light sent from subject each point；Described image processing system 6 can be placed in inside described super spectrum camera
End, or be placed in outside super spectrum camera.Heretofore described image processing system 6 is the figure by collect information
As capture card（Such as Pro Capture Dual DVI capture cards, RS-644 (LVDS) digital type images capture card, Levin-M205
High precision image capture card etc.）At the image formed with the image processing hardware for three-dimensional imaging and image processing software
Reason system.It acts on the three dimensional CT included but is not limited to medically（Computerized tomography）, three-dimensional on military simulation is geographical,
Geomorphologic map.
Embodiment 2：
It is a kind of structural representation of linear optical filter as shown in Figure 2, the wedge shaped distribution in the x direction of linear optical filter can be with
Centre wavelength by adjusting upper thickness change passband between reflective coating 7 and lower reflective coating 9 linearly change because
This can be such that the centre wavelength of transmitted light linearly changes in x directions, so as to obtain when incident light is from y directions vertical incidence
The full spatial distribution of each pixel.
The described super spectrum camera based on linear optical filter can be used for realizing full spectrum camera function.Its specific work
It is as step：
（1）Subject 1 is passed through camera lens 2 by reflection light caused by solar radiation or any external light source irradiation
Linear optical filter 3 is arrived in refraction；
（2）After light arrives at linear optical filter 3, the specific wavelength light in corresponding region passes through linear optical filter, and schemes in CCD
Picture as the particular color is presented on sensor 5；
（3）By controlling the axial location of the linear adjustment optical filter 3 of sliding bar 4, can respectively in ccd image sensor 5 not
With the picture that different particular colors are showed on position；
（4）The set of imaging on ccd image sensor 5, after the processing computing of image processing system 6, you can with
To the HYPERSPECTRAL IMAGERY of subject 1.
Advantage of the invention is that：
1）Different color point can be obtained in different price ranges by specifically limiting the region of linear optical filter corresponding wavelength
The video camera of ability is distinguished, and under conditions of wavelength region corresponding to the ultimate attainment linear optical filter of refinement, integrates all pixels point and exists
Reflected light information under all wavelengths, so as to realize the Hyper spectral Imaging of subject, avoid because metamerism phenomenon is brought
Image error；
2）By simply controlling the means of sliding bar lateral displacement to realize full spectral scan, the controlling party of video camera is simplified
Method, it is each including celestial body surface detector in order to be applied by wired and wireless network communication modes including unmanned plane
Kind is unpiloted mechanically, and carrying out ultraphotic in the place that some mankind can not arrive at automatic or remote control means composes shooting；
Traditional raster is substituted by using linear optical filter, greatly reduces small product size, space transportation cost is reduced, in minimum body
The colored shooting of fine definition is provided under conditions of product.
Claims (7)
1. a kind of super spectrum camera based on linear optical filter, it is characterised in that by camera lens, sliding bar, linear optical filtering
Piece, ccd image sensor and image processing system composition；
Described camera lens, which are erect, to be fixed on the axis of described super spectrum camera；
Described sliding bar is between described camera lens and described ccd image sensor, and perpendicular to described
Super spectrum camera axis；
Described linear optical filter is placed on described sliding bar, and can be on sliding bar along perpendicular to described ultraphotic spectrum
Arbitrarily move in the direction of video camera axis；By controlling the axial location of sliding bar linear adjustment optical filter, can exist respectively
The picture of different colours is showed on the diverse location of ccd image sensor；
Described ccd image sensor is fixed on after described linear optical filter, is erect and is composed shooting perpendicular to described ultraphotic
The axis of machine, the light sent from subject each point after camera lens reflect can be received；
The end that described image processing system is placed in inside described super spectrum camera, or be placed in outside super spectrum camera
Portion；
The light inlet of the light-emitting window aligned with camera camera lens of subject, the light-emitting window of camera lens are directed at linear optical filter
Light inlet, the light-emitting window alignment ccd image sensor of linear optical filter, ccd image sensor connection image processing system.
A kind of 2. super spectrum camera based on linear optical filter according to claim 1, it is characterised in that its video camera
Camera lens is DV camera lens or mobile phone camera camera lens.
3. a kind of super spectrum camera based on linear optical filter according to claim 1, it is characterised in that pass through regulation
Position of the sliding bar on described super spectrum camera axis, controls axial direction of the described linear optical filter on sliding bar
Position, so as to change the relative position of linear optical filter and camera lens, obtain the full spectrum of subject all pixels point
Information, realize the Hyper spectral Imaging to subject.
A kind of 4. super spectrum camera based on linear optical filter according to claim 1, it is characterised in that image procossing
System is any in the picture processing chip using Computer Image Processing module, handset image processing software or digital camera,
And it is connected by cable network or wireless network with the ccd image sensor.
5. a kind of super spectrum camera based on linear optical filter according to claim 1, it is characterised in that ultraphotic spectrum is taken the photograph
Camera, which places ground, includes unmanned plane, including celestial body surface detector it is various it is unpiloted mechanically, automatically or pass through remote control
Carry out ultraphotic spectrum shooting.
6. a kind of super spectrum camera based on linear optical filter according to claim 1, it is characterised in that described linear
Optical filter be one kind by optimizing thickness distribution after, passband center wavelengths in one direction are linearly distributed at equal intervals,
And adjacent center wavelength profile is intensive, interval only has a kind of 1 ~ 10nm linear optical filter.
7. a kind of super spectrum camera based on linear optical filter according to claim 1, it is characterised in that described linear
Optical filter corresponds to the region that the light of the various wavelength of full spectrum passes through, and each region is along perpendicular to described super spectrum camera axis
The one-dimensional arrangement in direction of line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710569934.0A CN107367885A (en) | 2017-07-13 | 2017-07-13 | A kind of super spectrum camera based on linear optical filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710569934.0A CN107367885A (en) | 2017-07-13 | 2017-07-13 | A kind of super spectrum camera based on linear optical filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3508828A1 (en) * | 2017-12-28 | 2019-07-10 | Havelsan Teknoloji Radar San. Tic. A.S. | A device for acqusition of hyperspectral and multi-spectral images with sliding linear optical filter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989005465A1 (en) * | 1987-12-11 | 1989-06-15 | Santa Barbara Research Center | Wedge-filter spectrometer |
| CN1635345A (en) * | 2003-12-31 | 2005-07-06 | 中国科学院西安光学精密机械研究所 | Miniature highly sensitive spectral imaging method and device based on optical waveguide light splitting principle |
| US7148967B1 (en) * | 2005-06-21 | 2006-12-12 | The United States Of America As Represented By The Secretary Of The Army | Hyper-spectral/continuously-tunable imager |
| US20140131578A1 (en) * | 2012-11-13 | 2014-05-15 | Curtis R. Hruska | Portable spectrometer |
| US20140210031A1 (en) * | 2013-01-29 | 2014-07-31 | Karen Denise Hendrix | Variable optical filter and a wavelength-selective sensor based thereon |
| CN104090320A (en) * | 2014-06-12 | 2014-10-08 | 中国科学院上海技术物理研究所 | Secondary spectrum elimination integrated optical filter for hyper-spectral imaging system |
| CN207037311U (en) * | 2017-07-13 | 2018-02-23 | 复旦大学 | A kind of super spectrum camera based on linear optical filter |
-
2017
- 2017-07-13 CN CN201710569934.0A patent/CN107367885A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989005465A1 (en) * | 1987-12-11 | 1989-06-15 | Santa Barbara Research Center | Wedge-filter spectrometer |
| CN1635345A (en) * | 2003-12-31 | 2005-07-06 | 中国科学院西安光学精密机械研究所 | Miniature highly sensitive spectral imaging method and device based on optical waveguide light splitting principle |
| US7148967B1 (en) * | 2005-06-21 | 2006-12-12 | The United States Of America As Represented By The Secretary Of The Army | Hyper-spectral/continuously-tunable imager |
| US20140131578A1 (en) * | 2012-11-13 | 2014-05-15 | Curtis R. Hruska | Portable spectrometer |
| US20140210031A1 (en) * | 2013-01-29 | 2014-07-31 | Karen Denise Hendrix | Variable optical filter and a wavelength-selective sensor based thereon |
| CN104090320A (en) * | 2014-06-12 | 2014-10-08 | 中国科学院上海技术物理研究所 | Secondary spectrum elimination integrated optical filter for hyper-spectral imaging system |
| CN207037311U (en) * | 2017-07-13 | 2018-02-23 | 复旦大学 | A kind of super spectrum camera based on linear optical filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3508828A1 (en) * | 2017-12-28 | 2019-07-10 | Havelsan Teknoloji Radar San. Tic. A.S. | A device for acqusition of hyperspectral and multi-spectral images with sliding linear optical filter |
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Application publication date: 20171121 |