CN207571310U - compressed sensing imaging device - Google Patents
compressed sensing imaging device Download PDFInfo
- Publication number
- CN207571310U CN207571310U CN201721624691.8U CN201721624691U CN207571310U CN 207571310 U CN207571310 U CN 207571310U CN 201721624691 U CN201721624691 U CN 201721624691U CN 207571310 U CN207571310 U CN 207571310U
- Authority
- CN
- China
- Prior art keywords
- light
- source
- unit
- compressed sensing
- imaging device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of compressed sensing imaging devices,Including emission system,Multi-channel detection system and central processing system,By the nonmonochromatic source in emission system send out multi-wavelength light beam be projected to detection target on reflected,The reflected light of different wave length is detected respectively by multi-channel detection system,And pass through central processing system and parallel processing is carried out to the result of detection of different wavelengths of light,It is associated respectively for the result of detection of different wave length and corresponding reconstructed image is calculated,It is handled finally by reconstructed image of the signal processing unit for different wave length using multichannel image integration technology,Obtain final imaging results,Detection target is detected using nonmonochromatic source,The complementary frequency spectrums information brought with spectrum information similar in acquisition and different wave length,Obtain more comprehensively reconstructing the spectrum information of target,Image impairment caused by so as to reduce air pollutants or water body,Improve image reconstruction precision.
Description
Technical field
The utility model is related to target detection identification and imaging fields, and in particular to a kind of compressed sensing imaging device.
Background technology
Relevance imaging (correlated imaging), also referred to as ghost imaging (ghost imaging) are a kind of based on light field
The quantum of fluctuation or classical correlation characteristic, can be with by reference to the intensity correlation operation between light field and target acquisition light field
Obtain to non-localized the novel imaging technique of target image information.However traditional relevance imaging is more there are sampling number, into
As the time is long, the problem of system structure is complicated, be not particularly suited in this environment complicated and changeable of bad weather or water body into
Picture.Compressed sensing (Compressive Sensing) technology is a kind of completely new signal sampling technology occurred in recent years, different
In traditional nyquist sampling theorem, which synchronously completes the compression process of signal with sampling process, i.e., by higher-dimension
Original signal projects to low-dimensional spatially by observing matrix, passes through solving-optimizing problem high probability with a small amount of projective parameter
Reconstruct original signal.The technology can effectively improve signal sampling efficiency, reduce signal processing time and calculate cost.
Relevance imaging technology based on compressed sensing can effectively overcome traditional association imaging technique about detection time,
The problem of system complexity.Since the technology is still imitated using single pixel detector as core devices, opto-electronic conversion is received
Rate is high, high gain, fast response time, the detection being very suitable under low light environment.Since what photodetector received is no longer
Signal with spatial resolution, but the total light intensity value in field range, it is not easy to by turbulent flow in water, fluctuation, impurity
Interference.In addition, since reference edge uses the device with modulation function to replace, system complexity and volume are significantly reduced
Degree so that the adaptive capacity to environment and stability of system are greatly improved.
Although compressed sensing imaging has excellent Testing of Feeble Signals and environment resistant interference performance, therefore is more suitable for dissipating by force
The image forming medium penetrated and absorbed by force.However, as the principle in order to obtain range information, make usually using monochrome short-pulse laser
For light source so that preferred in no progress wavelength in different weather conditions or water body, the measurement of Single wavelength
Mode can be influenced by environment so as to reduce image-forming range and image quality, and there is this mode relatively low environment to adapt to energy
Power is unfavorable for accurately restoring target image under complex environment.
Utility model content
The utility model provides a kind of compressed sensing imaging device, in the prior art using Single wavelength to solve
Imaging mode applicability it is poor and restore target image accuracy it is low the problem of.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of compressed sensing imaging device, including
Emission system, multi-channel detection system and central processing system：
The emission system includes the nonmonochromatic source, spatial light modulator and the projecting unit that are set gradually along light path, institute
The light beam that nonmonochromatic source is sent out is stated to be projected to through the projecting unit in detection target after spatial light modulator modulation；
The central processing system includes the signal processing unit being connected with each other and control unit, the signal processing unit
For parallel processing computer, the multi-channel detection system is connect with the signal processing unit, the spatial light modulator with
Described control unit connects.
Further, the nonmonochromatic source is broad spectrum light source, and the broad spectrum light source is based on the white of LARP technologies
Light source or glow discharge spot lamp or LED light source or lamp.
Further, the multi-channel detection system includes the channel selection unit set gradually along light path and photodetection
Device, the photodetector is single pixel detector, and is connect with the signal processing unit.
Further, the nonmonochromatic source is the array of source being made of the different monochromatic source of several wavelength.
Further, the multi-channel detection system includes the channel selection unit set gradually along light path and photodetection
Device, the photodetector is single pixel detector, and is connect with the signal processing unit.
Further, the channel selection unit is rotating filtering piece, and timesharing penetrates the reflected light of different wave length.
Further, the multi-channel detection system includes the receipts light list for collecting the reflected beams for detecting target
Member receives beam splitting unit and several photodetectors corresponding with the beam splitting unit that light unit connects, Mei Geguang with described
Electric explorer detects a kind of light of wavelength in the nonmonochromatic source.
Further, the multi-channel detection system further includes multiple transflection mirrors set gradually along light path, each described
Transflection mirror is corresponding with photodetector one of them described.
The utility model also provides a kind of imaging method of compressed sensing imaging device as described above, including following step
Suddenly：
S1：The nonmonochromatic source sends out the light beam of multi-wavelength, single by projecting after spatial light modulator modulation
Member is projected in the detection target；
S2：Light beam through the detection target reflection is received by the multi-channel detection system, the multi-channel detection system
System respectively detects the reflected light of different wave length, and the information detected is passed to the signal processing unit, simultaneously
The modulation matrix of spatial light modulator is sent to the signal processing unit by control unit；
S3：The signal processing unit carries out parallel processing to the result of detection of different wavelengths of light, respectively for different waves
Long result of detection is associated with the modulation matrix of spatial light modulator is calculated corresponding reconstructed image；
S4：The signal processing unit is used for the reconstructed image of different wave length at multichannel image integration technology
Reason, obtains final imaging results.
Further, the step S4 includes the following steps：
S41:The corresponding reconstructed image of different wave length is subjected to rgb value decomposition, and be normalized for each R/G/B values
Processing, obtains 3 groups of RGB images；
S42:3 groups of RGB images are subjected to Fourier transform, obtain the spectral matrix of 3 groups of RGB images, and according to not
Co-wavelength carries out equilibrium treatment to frequency spectrum；
S43:The spectral matrix of every group of RGB image is subjected to statistical average calculating, obtains spectrum mean matrix and frequency spectrum side
Poor matrix, using the Spectral variance matrix as spectrum mean matrix described in parameters revision, by every group of revised frequency of RGB image
Mean Matrix superposition is composed, and carries out inverse Fourier transform and obtains final imaging results.
Compressed sensing imaging device provided by the utility model, including emission system, multi-channel detection system and centre
Reason system, by set in emission system nonmonochromatic source send out multi-wavelength light beam be projected in detection target carry out it is anti-
It penetrates, the reflected light of different wave length is detected respectively, and pass through central processing system to difference by multi-channel detection system
The result of detection of wavelength light carries out parallel processing, be associated respectively for the result of detection of different wave length be calculated it is corresponding
Reconstructed image is carried out finally by reconstructed image of the signal processing unit for different wave length using multichannel image integration technology
Processing obtains final imaging results, and the utility model detects detection target using nonmonochromatic source, close to obtain
Spectrum information and the complementary frequency spectrums information brought of different wave length, it is more comprehensive to obtain using these complementary frequency spectrums information
The spectrum information of target is reconstructed, image impairment caused by so as to reduce air pollutants or water body obtains image matter more true to nature
Amount, improves image reconstruction precision.
Description of the drawings
Fig. 1 is the frame construction drawing of compressed sensing imaging device in the utility model embodiment 1；
Fig. 2 is one concrete structure schematic diagram of compressed sensing imaging device in the utility model embodiment 1；
Fig. 3 is one concrete structure schematic diagram of compressed sensing imaging device in the utility model embodiment 2；
Fig. 4 is one concrete structure schematic diagram of compressed sensing imaging device in the utility model embodiment 3；
Fig. 5 is one concrete structure schematic diagram of compressed sensing imaging device in the utility model embodiment 4.
Shown in figure：10th, emission system；110th, nonmonochromatic source；110a, red light source；111a, green light source；111c、
Blue-light source；120th, spatial light modulator；130th, projecting unit；140th, shaping and collimating element；
20th, multi-channel detection system；210th, channel selection unit；220th, photodetector；220a, feux rouges detector；
220b, green light detector；220c, blue light detector；230th, light unit is received；
30th, central processing system；310th, signal processing unit；320th, control unit；
40th, target is detected；50a, the first transflection mirror；50b, the second transflection mirror；50c, third transflection mirror；50d, the 4th transflection
Mirror.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the utility model provides a kind of compressed sensing imaging device, including emission system 10, multichannel
Detection system 20 and central processing system 30.
The emission system 10 includes the nonmonochromatic source 110 set gradually along light path, spatial light modulator 120 and throws
Unit 130 is penetrated, the light beam that the nonmonochromatic source 110 is sent out is single through the projection after the spatial light modulator 120 modulation
Member 130 is projected in detection target 40；Specifically, nonmonochromatic source 110 is the light source that can export at least two wavelength, this reality
It applies in example, nonmonochromatic source 110 is broad spectrum light source, you can to export the light source of continuous wavelength, the broad spectrum light source is base
In the white light source or glow discharge spot lamp or LED light source or lamp of LARP (laser remote excitation fluorescent powder) technology, this
Outside, shaping and collimating element 140, the light sent out to nonmonochromatic source 110 are set along the rear of light path in nonmonochromatic source 110
Shu Jinhang shapings and collimation.The spatial light modulator 120 is digital micromirror array (DMD), is made of several micro mirrors, according to setting
Fixed modulation matrix controls the state of each micro mirror, so as to fulfill the modulation to light beam；Throwing may be used in the projecting unit 130
Shadow camera lens or other arbitrary camera lenses, for the picture of spatial light modulator 120 to be projected to detection target 40.
The central processing system 30 includes the signal processing unit 310 being connected with each other and control unit 320, the signal
Processing unit 310 is parallel processing computer, and the signal processing unit 310 connect with the multi-channel detection system 20, connects
The detection data of the multi-channel detection system 20 is received, the detection data of different wave length is carried out simultaneously by parallel processing computer
Row processing specially for the result of detection of different wave length closed with the modulation matrix of spatial light modulator 120 respectively
Corresponding reconstructed image is calculated in connection, and association herein is calculated specifically, for same detection target 40, is repeatedly adjusted empty
Between speculum in optical modulator 120 state, obtain different modulation matrixs, light beam is modulated by different modulation matrixs
After be irradiated in detection target 40 and reflected, the light beam of reflection obtains different measured values by the detection of photodetector 220, no
Same modulation matrix forms a big matrix, and different measured values form an one-dimensional vector, and the two is associated calculating so as to obtain
To a frame reconstructed image.Finally the reconstructed image of acquisition using multichannel image integration technology is handled, is obtained final
Imaging results.Described control unit 320 is connect with the spatial light modulator 120, and space is controlled according to the modulation matrix of setting
The state of micro mirror in optical modulator 130, realizes and light beam is modulated.
Preferably, the multi-channel detection system 20 includes the channel selection unit 210 set gradually along light path and photoelectricity
Detector 220, the photodetector 220 is single pixel detector, and is connect with the signal processing unit 310.Specifically,
The photodetector 220 is single pixel detector.As shown in Fig. 2, the channel selection unit 210 is rotating filtering piece, point
When through different wave length reflected light, it should be noted that the rotating filtering piece include with multiple filter areas optical filter and
The driving mechanism (being to show in figure) that the optical filter is driven to rotate, and each filter area corresponds to the light of different wavelength, passes through
Driving mechanism drives optical filter rotation, and timesharing penetrates the light of different wave length, makes reflected light of the photodetector 210 to different wave length
It is detected respectively.It should be noted that when the image spectrum information of same submarine target is detected by the light source of different wave length,
Similar spectrum information can not only be obtained, and complementary frequency spectrums information caused by different wave length can be obtained.Utilize these complementations
Spectrum information can more comprehensively reconstruct the spectrum information of target, and image damages caused by reducing air pollutants or water body
It loses, so as to obtain picture quality more true to nature.
A kind of imaging method of above-mentioned compressed sensing imaging device in the present embodiment is also provided, is included the following steps：
S1：The nonmonochromatic source 110 sends out the light beam including multi-wavelength, is modulated through the spatial light modulator 120
It is projected in the detection target 40 by projecting unit 130 afterwards；In the present embodiment, nonmonochromatic source 110 is using can export
The broad spectrum light source of continuous wavelength is such as based on the white light source or glow discharge spot lamp of LARP (laser remote excitation fluorescent powder) technology
Or LED light source or lamp, shaping and collimating element 140 are set along the rear of light path in nonmonochromatic source 110, to non-list
The light beam that color light source 110 is sent out carries out shaping and collimation.The spatial light modulator 120 is micro- for the number being made of several micro mirrors
Lens array (DMD) controls the state of each micro mirror by control unit 320, so as to fulfill to light according to the modulation matrix of setting
The modulation of beam；The projecting unit 130 is used to the picture of spatial light modulator 120 being projected to detection target 40.
S2：The light beam reflected through the detection target 40 is received by the multi-channel detection system 20, and the multichannel is visited
Examining system 20 respectively detects the light beam of different wave length, and the information detected is passed to the signal processing unit
310, while the modulation matrix of spatial light modulator 120 is sent to the signal processing unit 310 by control unit 320；Specifically
, in the present embodiment, multi-channel detection system 20 includes the channel selection unit 210 set gradually along light path and photodetector
220, wherein photodetector 220 is single pixel detector.The channel selection unit 210 is rotating filtering piece, and timesharing penetrates
The reflected light of different wave length, it should be noted that the rotating filtering piece includes the optical filter with multiple filter areas and drive to be somebody's turn to do
The driving mechanism (being to show in figure) of optical filter rotation, and each filter area corresponds to the light of different wavelength, passes through driving machine
Structure drives optical filter rotation, and timesharing penetrates the light of different wave length, make photodetector 210 to the reflected light of different wave length respectively into
Row detection.
S3：The signal processing unit 310 carries out parallel processing to the result of detection of different wave length, respectively for different waves
Long result of detection, which is associated, is calculated corresponding reconstructed image；Specifically, the signal processing unit 310 is parallel place
Computer is managed, the signal processing unit 310 is connect with the multi-channel detection system 20, receives the multi-channel detection system
20 detection data carries out parallel processing by parallel processing computer to the detection data of different wave length, specially needle respectively
The result of detection of different wave length with the modulation matrix of spatial light modulator 120 is associated, corresponding reconstruct image is calculated
Picture.Association herein is calculated specifically, for same detection target 40, repeatedly adjusts the reflection in spatial light modulator 120
The state of mirror obtains different modulation matrixs, and it is enterprising that light beam is irradiated to detection target 40 after different modulation matrix modulation
Row reflection, the light beam of reflection obtain different measured values by the detection of photodetector 220, and different modulation matrixs forms one big
Matrix, different measured values form an one-dimensional vector, and the two is associated calculating so as to obtain a frame reconstructed image.
S4：The signal processing unit 310 for different wave length reconstructed image using multichannel image integration technology into
Row processing, obtains final imaging results.Include the following steps：
S41:The corresponding reconstructed image of different wave length is carried out rgb value to decompose to obtain three images, and for each image
Value is normalized, and obtains 3 groups of RGB images；Specifically, by taking three wavelength as an example, corresponding reconstructed image is H, I, K,
Rgb value is then carried out to it respectively and decomposes to obtain three images as { HR、 HG、HB}；{IR、IG、IB}；{KR、KG、KB}；For its into
Three groups of RGB images that row normalized obtains are { (HR)′、(IR)′、(KR)′}；{(HG)′、(IG)′、(KG)′}；{(HB)′、
(IB)′、(KB) ' }, wherein () ' to normalize operation；Certainly in practical application, the quantity of different wave length should be greater than 3, preferably
More than 10, so as to improve the quantity of blending image, the image reconstruction precision of target 40 is detected.
S42:3 groups of RGB images are subjected to Fourier transform, obtain the spectral matrix of 3 groups of RGB images, and for not
Co-wavelength carries out spectral equalization processing；Specifically, according to Fourier transform formula
In order to reduce frequency spectrum calculation amount, for the spectral matrix of each wavelength, frequency w therein takes the corresponding frequency of 0~1/2 wavelength,
The spectral matrix for finally obtaining 3 groups of RGB images is { F [(HR)′]、F[(IR)′]、F[(KR)′]}；{F[(HG)′]、F[(IG)′]、
F[(KG)′]}；{F[(HB)′]、F[(IB)′]、F[(KB)′]}；Wherein F [] represents Fourier transformation.
S43:The spectral matrix of every group of RGB image is subjected to statistical average calculating, obtains spectrum mean matrix and frequency spectrum side
Poor matrix, it is using the Spectral variance matrix as spectrum mean matrix described in parameters revision, every group of RGB image is revised
Spectrum mean matrix is superimposed, and is carried out inverse Fourier transform and obtained final imaging results.Specifically, it is directed to every group of RGB respectively
The spectral matrix of image carries out asking arithmetic mean and variance operation, obtains spectrum mean matrix and corresponding Spectral variance matrix,
By each spectrum mean matrix ± 0.1* Spectral variance matrixes, so as to obtain revised spectrum mean matrix；Finally by every group
The revised spectrum mean matrix superposition of RGB image, and carry out inverse fourier transform and obtain final imaging results.Here also may be used
First by every group of RGB image revised spectrum mean matrix be overlapped again after inverse fourier transform, obtain final
Imaging results.
Embodiment 2
As different from Example 1, in the present embodiment, the multi-channel detection system 20 includes collecting the detection
The receipts light unit 230 of the reflected beams of target, with the beam splitting unit that connect of receipts light unit and with the beam splitting unit pair
Several photodetectors 220 answered, each photodetector 220 detects a kind of light of wavelength in the nonmonochromatic source, described
The reflected beams are divided into the light of different wave length by beam splitting unit, are detected by the photodetector 220 of corresponding wavelength.Tool
Body, it is described to receive light unit 230 for collecting the light beam of multi-wavelength that detection target 40 reflects, and beam splitting unit is passed to, it receives
Light unit 230 can set one or more and be corresponded with photodetector 220, in the present embodiment, set a receipts light
Unit 230, before which is located at beam splitting unit along light path, as shown in figure 3, being with 3 photodetectors 220
Example, respectively feux rouges detector 220a, green light detector 220b and blue light detector 220c, the beam splitting unit are included along light path
The two transflection mirrors set gradually, respectively the first transflection mirror 50a and the second transflection mirror 50b, select the first transflection mirror 50a for
Blue light is reflected, transmits the transflection mirror of feux rouges and green light, the second transflection mirror 50b is selected to transmit the transflection mirror of feux rouges for reflection green light,
In the present embodiment, the first transflection mirror 50a and the second transflection mirror 50b are obliquely installed with horizontal direction in 45 °, to be better achieved
Transmission and the purpose of reflection, blue light detector 220c are set on the reflected light path of the first transflection mirror 50a blue lights, green light are detected
Device 220b is set on the reflected light path of the second transflection mirror 50b green lights, and it is red that feux rouges detector 220a is set on the second transflection mirror 50b
On the transmitted light path of light, the detection to blue and green light and feux rouges is realized respectively.Can certainly select the first transflection mirror 50a for
Feux rouges is reflected, transmits the transflection mirror of green light and blue light, the second transflection mirror 50b is selected to transmit the transflection mirror of blue light for reflection green light,
Similarly the first transflection mirror 50a and the second transflection mirror 50b are obliquely installed with horizontal direction in 45 °, and feux rouges detector 220a is set
In on the reflected light path of the first transflection mirror 50a feux rouges, green light detector 220b is set on to the reflected light of the second transflection mirror 50b green lights
On the road, by blue light detector 220c be set on the second transflection mirror 50b blue lights transmitted light path on, realize respectively to feux rouges, green light and
The detection of blue light.According to optically coated principle, transmission spectrum extends or from long wavelength to short wavelength from shortwave to length the above method
Wave extends.Three receipts light units 230 can certainly be set, correspond with single pixel detector 220, visited in each single pixel
The corresponding receipts light unit 230 of 220 front (namely between single pixel detector 220 and corresponding transflection mirror) setting of device is surveyed, when
So relative to the scheme using a receipts light unit 230, hardware cost is higher, and the size of transflection mirror is also larger.Using this implementation
The scheme of example realizes the signal that different wave length is obtained in synchronization, and reconstructed image precision is high, be not easily susceptible to external environment and
The negative effect that system space position offset is brought.
Embodiment 3
As different from Example 1, in the present embodiment, the nonmonochromatic source 110 is included by the different list of several wavelength
The array of source of color light source composition.In the present embodiment, by taking three kinds of monochromatic sources as an example, respectively red light source 111a, green light
Source 111b and blue-light source 111c, three kinds of light sources can be with Heterogeneous Permutation, and the light sent out is mutual indepedent, can also be by setting light
Element fusion is a light beam, as shown in figure 4, by setting third transflection mirror 50c and the 4th transflection mirror 50d, makes three light
The light beam that source is sent out permeates light beam, and third transflection mirror 50c select to reflect the transflection mirror of green light for transmission feux rouges, select
4th transflection mirror 50d is transmission feux rouges and green light, reflects the transflection mirror of blue light, red light source 111a, third transflection mirror 50c and
4th transflection mirror 50d is arranged in order along light path, and green light source 111b is corresponding with the third transflection mirror 50c, blue-light source 111c
It is corresponding with the 4th transflection mirror 50d.The feux rouges that red light source 111a is sent out penetrates blue-light source 111c and the described 4th successively
It is projected to after transflection mirror 50d on shaping and collimating element 140, the green light that green light source 111b is sent out is anti-by third transflection mirror 50c
The 4th transflection mirror 50d is penetrated after penetrating and is projected on shaping and collimating element 140, the blue light that blue-light source 111c is sent out is by third
It is projected on shaping and collimating element 140 after transflection mirror 50c reflections, three kinds of colors shine simultaneously, and synthesize a kind of light beam.Certainly
Third transflection mirror 50c can also be selected to reflect the transflection mirror of green light to transmit blue light, select the 4th transflection mirror 50d blue for transmission
Light and green light reflect the transflection mirror of feux rouges, by blue-light source 111c, third transflection mirror 50c and the 4th transflection mirror 50d along light path according to
Secondary arrangement, green light source 111b is corresponding with the third transflection mirror 50c, red light source 111d and the 4th 50d pairs of the transflection mirror
It should.The blue light that blue-light source 111c is sent out is projected to shaping after penetrating blue-light source 111c and the 4th transflection mirror 50d successively
And on collimating element 140, the green light that green light source 111b is sent out is penetrated the 4th transflection mirror 50d after third transflection mirror 50c reflections
And be projected on shaping and collimating element 140, the feux rouges that red light source 111a is sent out is projected to after being reflected by third transflection mirror 50c
In shaping and collimating element 140, three kinds of colors shine simultaneously, and synthesize a kind of light beam.Above-mentioned arrangement principle is based on optics plating
In film, principle that transmission spectrum is extended or extended from shortwave to long wave from from long wavelength to short wavelength.Others can certainly be used
Arrangement, as long as meeting optically coated principle.
The multi-channel detection system 20 includes the channel selection unit 210 set gradually along light path and photodetector
220, the photodetector 220 is single pixel detector, and is connect with the signal processing unit 310.Specifically, the light
Electric explorer 220 is single pixel detector.The channel selection unit 210 is rotating filtering piece, and timesharing is through different wave length
Reflected light, it should be noted that the rotating filtering piece includes the optical filter with multiple filter areas and drives optical filter rotation
Driving mechanism (being to show in figure), and each filter area corresponds to the light of different wavelength, passes through driving mechanism and drives optical filtering
Piece rotates, and timesharing penetrates the light of different wave length, and photodetector 210 is made to detect the reflected light of different wave length respectively, should
Scheme reduces the hardware complexity of signal processing unit 310 using the method for receiving detectable signal at times.It can certainly
One synchronous control unit, control red light source 111a, green light source 111b and blue light are set in central processing system 30
Source 111c timesharing shines, at the same control driving mechanism drive the rotation of rotating filtering piece make the filter area of rotating filtering on piece with it is current
Illuminating source synchronize.
Embodiment 4
As shown in figure 5, as different from Example 3, in the present embodiment, the multi-channel detection system 20 includes being used for
Collect the reflected beams of the detection target receipts light unit 230, with it is described receive the beam splitting unit that connect of light unit and with institute
The corresponding several photodetectors 220 of beam splitting unit are stated, each photodetector 220 detects a kind of in the nonmonochromatic source
The reflected beams are divided into the light of different wave length by the light of wavelength, the beam splitting unit, pass through the photodetector of corresponding wavelength
220 are detected.Specifically, described receive light unit 230 for collecting the light beam of multi-wavelength that detection target 40 reflects, and pass
Beam splitting unit is passed, one or more can be set and be corresponded with photodetector 220, the present embodiment by receiving light unit 230
In, a receipts light unit 230 is set, before which is set on beam splitting unit along light path, with 3 photodetectors
For 220, respectively feux rouges detector 220a, green light detector 220b and blue light detector 220c, three photodetectors 220
It can be shifted to install according to reflected light, receive reflected light respectively and detect corresponding light, other circuit elements can also be used
To simplify method for arranging, as shown in figure 5, the beam splitting unit includes two transflection mirrors being set gradually along light path, respectively the
One transflection mirror 50a and the second transflection mirror 50b selects the first transflection mirror 50a to transmit the transflection of feux rouges and green light to reflect blue light
Mirror selects the second transflection mirror 50b to reflect green light, transmits the transflection mirror of feux rouges, in the present embodiment, the first transflection mirror 50a and the
Two transflection mirror 50b are obliquely installed with horizontal direction in 45 °, the purpose of transmission and reflection is better achieved.Blue light is detected
Device 220c is set on the reflected light path of the first transflection mirror 50a blue lights, and green light detector 220b is set on the second transflection mirror 50b green lights
Reflected light path on, by feux rouges detector 220a be set on the second transflection mirror 50b feux rouges reflected light path on, realized respectively to indigo plant
The detection of light, green light and feux rouges.The first transflection mirror 50a can certainly be selected to transmit the saturating of green light and blue light to reflect feux rouges
Anti- mirror selects the second transflection mirror 50b to transmit the transflection mirror of blue light, similarly the first transflection mirror 50a and the second transflection to reflect green light
Mirror 50b is obliquely installed with horizontal direction in 45 °, and feux rouges detector 220a is set on to the reflected light of the first transflection mirror 50a feux rouges
On the road, green light detector 220b is set on the reflected light path of the second transflection mirror 50b green lights, blue light detector 220c is set on the
On the transmitted light path of two transflection mirror 50b blue lights, the detection to feux rouges, green light and blue light is realized respectively.The above method is according to optics
The principle of plated film, transmission spectrum are extended from long wavelength to short wavelength or are extended from shortwave to long wave.Three receipts can certainly be set
Light unit 230 is corresponded with single pixel detector 220, each single pixel detector 220 along light path front (namely
Between single pixel detector 220 and corresponding transflection mirror) the corresponding receipts light unit 230 of setting, certainly relative to using a receipts
The scheme of light unit 230, hardware cost is higher, and the size of transflection mirror is also larger.In addition it is also possible in central processing system 30
One synchronous control unit is set, and control red light source 111a, green light source 111b and blue-light source 111c timesharing shine, simultaneously
Feux rouges detector 220a, green light detector 220b and blue light detector 220c timesharing is controlled to open, and with corresponding light source synchronous.
Using the specific adaptable and reconfiguration information of the compressed sensing imaging device of the scheme in the present embodiment it is accurate the advantages of.
In conclusion compressed sensing imaging device provided by the utility model, including emission system 10, multi-channel detection system
System 20 and central processing system 30 are projected by the light beam that nonmonochromatic source 210 is set to send out multi-wavelength in emission system 10
It is reflected on to detection target 40, the reflected light of different wave length is detected respectively by multi-channel detection system 20, and
Parallel processing is carried out to the result of detection of different wavelengths of light by central processing system 30, respectively for the detection knot of different wave length
Fruit, which is associated, is calculated corresponding reconstructed image, and the reconstruct image of different wave length is directed to finally by signal processing unit 310
As being handled using multichannel image integration technology, final imaging results are obtained, the utility model uses nonmonochromatic source
210 pairs of detection targets detect, and the complementary frequency spectrums information brought with spectrum information similar in acquisition and different wave length utilizes
These complementary frequency spectrums information are drawn with obtaining more comprehensively reconstructing the spectrum information of target so as to reduce air pollutants or water body
The image impairment risen obtains picture quality more true to nature, improves image reconstruction precision.
Although the embodiment of the utility model is illustrated in specification, these embodiments are intended only as carrying
Show, should not limit the scope of protection of the utility model.Various omissions are carried out in the range of the utility model aims are not departed from, are put
It changes and change should be included in the scope of protection of the utility model.
Claims (8)
1. a kind of compressed sensing imaging device, which is characterized in that including emission system, multi-channel detection system and central processing system
System：
The emission system includes the nonmonochromatic source, spatial light modulator and the projecting unit that are set gradually along light path, described non-
The light beam that monochromatic source is sent out is projected in detection target after spatial light modulator modulation through the projecting unit；
The central processing system includes the signal processing unit being connected with each other and control unit, and the signal processing unit is simultaneously
Row processing computer, the multi-channel detection system connect with the signal processing unit, the spatial light modulator with it is described
Control unit connects.
2. compressed sensing imaging device according to claim 1, which is characterized in that the nonmonochromatic source is wide spectrum light
Source, the broad spectrum light source are the white light source based on LARP technologies or glow discharge spot lamp or LED light source or lamp.
3. compressed sensing imaging device according to claim 2, which is characterized in that the multi-channel detection system includes edge
The channel selection unit and photodetector that light path is set gradually, the photodetector be single pixel detector, and with it is described
Signal processing unit connects.
4. compressed sensing imaging device according to claim 1, which is characterized in that the nonmonochromatic source is by several waves
The array of source of long different monochromatic source composition.
5. compressed sensing imaging device according to claim 4, which is characterized in that the multi-channel detection system includes edge
The channel selection unit and photodetector that light path is set gradually, the photodetector be single pixel detector, and with it is described
Signal processing unit connects.
6. the compressed sensing imaging device according to claim 3 or 5, which is characterized in that the channel selection unit is rotation
Turn optical filter, timesharing penetrates the reflected light of different wave length.
7. the compressed sensing imaging device according to claim 2 or 4, which is characterized in that the multi-channel detection system packet
Include for collect the detection target the reflected beams receipts light unit, with it is described receive the beam splitting unit that connect of light unit and with
The corresponding several photodetectors of the beam splitting unit, each photodetector detect a kind of wavelength in the nonmonochromatic source
Light.
8. compressed sensing imaging device according to claim 7, which is characterized in that the multi-channel detection system further includes
Multiple transflection mirrors set gradually along light path, each transflection mirror are corresponding with photodetector one of them described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624691.8U CN207571310U (en) | 2017-11-29 | 2017-11-29 | compressed sensing imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624691.8U CN207571310U (en) | 2017-11-29 | 2017-11-29 | compressed sensing imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207571310U true CN207571310U (en) | 2018-07-03 |
Family
ID=62688657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721624691.8U Active CN207571310U (en) | 2017-11-29 | 2017-11-29 | compressed sensing imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207571310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783148A (en) * | 2017-11-29 | 2018-03-09 | 苏州蛟视智能科技有限公司 | Compressed sensing imaging device and method |
| CN110108358A (en) * | 2019-03-28 | 2019-08-09 | 浙江大学 | A kind of high spectrum imaging method and device |
-
2017
- 2017-11-29 CN CN201721624691.8U patent/CN207571310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107783148A (en) * | 2017-11-29 | 2018-03-09 | 苏州蛟视智能科技有限公司 | Compressed sensing imaging device and method |
| CN110108358A (en) * | 2019-03-28 | 2019-08-09 | 浙江大学 | A kind of high spectrum imaging method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107783148A (en) | Compressed sensing imaging device and method | |
| CN102768069B (en) | Single-photon spectral counting and imaging system and method for complementary measurement | |
| CN102393248B (en) | Time-resolved extreme-low-light multispectral imaging system and method | |
| CN110530286B (en) | Novel single-camera three-dimensional digital image correlation system using light-combining prism | |
| Wang et al. | Hyperspectral computational ghost imaging via temporal multiplexing | |
| WO2012174940A1 (en) | Multi-spectral imaging method for ultraweak photon emission and system thereof | |
| JP2021527228A (en) | Hybrid spectrum imager | |
| JP2010517460A (en) | Multispectral image acquisition method and apparatus | |
| DE112009001652T5 (en) | Multichannel recording | |
| CN207571310U (en) | compressed sensing imaging device | |
| CN107942338B (en) | Multi-wavelength associated imaging system based on digital micromirror device | |
| CN102901564B (en) | Complementary-measurement time resolution single-photon spectrum counting imaging system and method | |
| CN114095718B (en) | Single pixel imaging system and method | |
| RU2447471C2 (en) | Colour successive flash for obtaining digital images | |
| CN107436194A (en) | A kind of high light flux real time spectrum imaging device | |
| CN110319790A (en) | A kind of terrible imaging method of full color calculating based on colored speckle field | |
| CN110887564A (en) | Moving target spectrum monitoring device and monitoring method | |
| CN103376725B (en) | Color holographic image synthesizing system | |
| CN114659634A (en) | Miniature snapshot type compressed spectrum imaging detection device and detection method | |
| CN113790798B (en) | Seamless spectral imaging device, system and method for dynamic point target tracking measurement | |
| CN106895916B (en) | A kind of method that single exposure shooting obtains multispectral image | |
| CN208270074U (en) | Space-time combined modulation light field spectrum imaging system | |
| CN113884234A (en) | Complementary single-pixel centroid detection system and method | |
| CN108897005A (en) | A kind of imaging system and imaging method | |
| CN105784113B (en) | Distinguish the imaging system and method for fluorescence emission spectrum image and reflection spectrum images |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |