CN110132175A - Single pixel phase imaging method and device based on amplitude modulation - Google Patents
Single pixel phase imaging method and device based on amplitude modulation Download PDFInfo
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- CN110132175A CN110132175A CN201910461680.XA CN201910461680A CN110132175A CN 110132175 A CN110132175 A CN 110132175A CN 201910461680 A CN201910461680 A CN 201910461680A CN 110132175 A CN110132175 A CN 110132175A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/254—Projection of a pattern, viewing through a pattern, e.g. moiré
Abstract
The present invention proposes a kind of single pixel phase imaging method and device based on amplitude modulation, wherein method includes: to obtain multiple amplitude modulation patterns, and multiple amplitude modulation patterns are successively loaded onto spatial light modulator；By spatial light modulator successively according to multiple amplitude modulation patterns to the light source projects after default modulation of source to target object；Multiple central light strengths that multiple amplitude modulation patterns are projected to corresponding optical Fourier plane after target object respectively are successively obtained by single pixel detector；Multiple amplitude modulation patterns and corresponding multiple central light strengths are calculated according to the phase recovery optimization algorithm of alternating projection, obtain the amplitude-phase information of target object, and determine the image of target object according to amplitude-phase information.The significant advantages such as single pixel phase imaging method of the present invention has optical path simple, and light efficiency is strong, and strong robustness, high s/n ratio, wide spectral range, low cost, system configuration are flexible.
Description
Technical field
The present invention relates to calculate to image to learn technical field more particularly to a kind of single pixel phase imaging based on amplitude modulation
Method and apparatus.
Background technique
The acquisition of phase of light wave information is an important topic in optical measurement, is led in biomedicine, material science etc.
There is the application value that can not be substituted in domain.After light beam penetrates object, intensity and phase can be modulated by object simultaneously, but only
There is strength information that can directly record by detector, phase information is then generally limited by the finite response speed of detector and loses
It loses.However, the phase of light wave is the embodiment of object surface shape, thickness and detailed information, often specific strength is contained more
Information.Phase imaging is the technology of a kind of intensity for observing light field and phase, takes specific method by receiving light intensity
Inverting rebuilds to obtain phase of light wave, has been obtained extensively in fields such as optics, Wave-front measurement, medical imaging, digital holograms at present
General application.
Whether traditional quantitative phase imaging method using interference technique can be divided into interferometry according to the acquisition of quantitative phase
With non-interfering method.Most of quantitative phase imaging technique is all based on interferometry, by interfering production through light and reference light
Raw interference fringe, obtains phase information from interference fringe.For example, Fourier phase microtechnic (FPM), Hilbert phase
Microtechnic (HPM), double interference channel quantitative phase microtechnics (DQPM) etc..It is multiple although interferometry precision is higher
Miscellaneous optical path and its application is restricted the sensibility of external environment.Non-interfering method mainly includes based on strength transfer
The method and coherent diffraction imaging (CDI) method of equation (TIE), core are phase recovery, that is, pass through the light field measured
Intensity distribution carries out calculating reconstruct to the phase information of loss.Such methods have more due to the light source that does not need strictly to be concerned with
Add and is widely applied range.Above-mentioned phase imaging method is all made of 2-dimensional array detector, and light path calibration is complex, and at
As band-limited, noise is relatively low.
Being calculated as based on single pixel detector seems a kind of new imaging.Different from conventional phase imaging method,
Single pixel imaging, come the light intensity of detecting object transmission or reflection, has high letter using the detector for the single sensing unit only having
Ratio, wide spectral range, low cost, the system configuration of making an uproar flexibly etc. characteristics.In recent years, existing research is by single pixel imaging method application
Method in the acquisition of object phase, including being imaged based on ghost and based on Phase Shifting Holographic art.Ghost holographic technique utilize with
Machine scattering spot pattern samples target, and rebuilds phase based on the correlation with single pixel ionization meter.It is complete in phase shift
It ceases in art, hologram can be obtained by one group of interference pattern, and each interference pattern has constant phase between signal and reference beam
It moves.There are problems for existing single pixel phase imaging method: (1) needing more phase modulating structure illumination, optical path is complicated, light
Inefficient；(2) it directly inverts reconstruction, poor robustness.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, the first purpose of this invention is to propose a kind of single pixel phase imaging method based on amplitude modulation,
It solves single pixel phase imaging method in the prior art and there is the more phase modulating structure illumination of needs, optical path is complicated, light
The technical issues of inefficient, reconstruction of directly inverting, poor robustness, there is high s/n ratio, wide spectral range, low cost, system to match
Set the characteristics such as flexible.
Second object of the present invention is to propose a kind of single pixel phase imaging device based on amplitude modulation.
Third object of the present invention is to propose a kind of computer equipment.
Fourth object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
In order to achieve the above object, first aspect present invention embodiment propose it is a kind of based on amplitude modulation single pixel phase at
Image space method, the method are applied in single pixel phase imaging optical path, and the single pixel phase imaging optical path is from left to right successively
Include: light source, spatial light modulator, target object and single pixel detector, the described method comprises the following steps: obtaining multiple width
Modulation pattern is spent, and the multiple amplitude modulation pattern is successively loaded onto the spatial light modulator；Control the spatial light
Modulator is successively according to the multiple amplitude modulation pattern to the light source projects after default modulation of source to target object；Pass through institute
It states single pixel detector and successively obtains the multiple amplitude modulation pattern and be projected to corresponding optics after the target object respectively
Multiple central light strengths of Fourior plane；According to the phase recovery optimization algorithm of alternating projection to the multiple amplitude modulation pattern
It is calculated with corresponding the multiple central light strength, obtains the amplitude-phase information of the target object, and according to the amplitude phase
Position information determines the image of the target object.
The single pixel phase imaging method based on amplitude modulation of the embodiment of the present invention, solves single pixel in the prior art
Phase imaging method, which exists, needs more phase modulating structure illumination, and optical path is complicated, and light efficiency is poor, reconstruction of directly inverting, Shandong
The technical problem of stick difference, have high s/n ratio, wide spectral range, low cost, system configuration flexibly etc. characteristics.
In the embodiment of the present invention, the light source is coherent source, and the spatial light modulator includes but is not limited to number
Micro mirror element, LCD, LCOS.
Each amplitude modulation pattern in the embodiment of the present invention, in the multiple amplitude modulation pattern, comprising: random ash
Spend pattern, random 0-1 pattern, sinusoidal pattern, any one in Hadamard pattern.
It is described that the multiple amplitude modulation pattern is successively obtained by the single pixel detector in the embodiment of the present invention
It is projected to multiple central light strengths of corresponding optical Fourier plane after the target object respectively, comprising: by the multiple width
Degree modulation pattern is projected to the preset imaging mathematical model of multiple patterns input after the target object respectively, obtains described more
A central light strength, wherein the formula of the imaging mathematical model is as follows:
Wherein,For m-th of amplitude modulation pattern,For the multiple figure of the target object
Picture, i and j are discrete coordinates (i=1,2 ... n, j=1,2 ... n), and ⊙ indicates dot-product operation,Indicate to two-dimensional matrix into
Row summation operation,Central light strength corresponding to m-th of amplitude modulation pattern.
In the embodiment of the present invention, the phase recovery optimization algorithm, comprising: based on alternative projection algorithm, be based on
Wirtinger Flow algorithm, based on any one in Semidefinite Programming algorithm.
In order to achieve the above object, second aspect of the present invention embodiment propose it is a kind of based on amplitude modulation single pixel phase at
As device, described device is applied in single pixel phase imaging optical path, and the single pixel phase imaging optical path is from left to right successively
It include: light source, spatial light modulator, target object and single pixel detector, described device includes: loading module, for obtaining
Multiple amplitude modulation patterns, and the multiple amplitude modulation pattern is successively loaded onto the spatial light modulator；Projection module,
Successively the light source after default modulation of source is thrown according to the multiple amplitude modulation pattern for controlling the spatial light modulator
It is incident upon target object；First obtains module, for successively obtaining the multiple amplitude modulation figure by the single pixel detector
Case is projected to multiple central light strengths of corresponding optical Fourier plane after the target object respectively；Second obtains module, uses
In the phase recovery optimization algorithm according to alternating projection to the multiple amplitude modulation pattern and corresponding the multiple center light
It is strong to calculate, obtain the amplitude-phase information of the target object；Determining module, for determining institute according to the amplitude-phase information
State the image of target object.
In the embodiment of the present invention, the light source is coherent source, and the spatial light modulator includes but is not limited to number
Micro mirror element, LCD, LCOS.
Each amplitude modulation pattern in the embodiment of the present invention, in the multiple amplitude modulation pattern, comprising: random ash
Spend pattern, random 0-1 pattern, sinusoidal pattern, any one in Hadamard pattern.
The embodiment of the present invention based on amplitude modulation single pixel phase imaging device, by loading module, projection module,
First obtains module, the second acquisition module and determining module, and solving single pixel phase imaging method presence in the prior art needs
It wants more phase modulating structure illumination, the technical issues of optical path is complicated, and light efficiency is poor, reconstructions of directly inverting, poor robustness, has
Have high s/n ratio, wide spectral range, low cost, system configuration flexibly etc. characteristics.
In order to achieve the above object, third aspect present invention embodiment proposes a kind of computer equipment, including memory, processing
Device and it is stored in the computer program that can be run on the memory and on the processor, the processor executes the meter
When calculation machine program, the single pixel phase imaging method a method as claimed in any one of claims 1 to 5 based on amplitude modulation is realized.
To achieve the goals above, fourth aspect present invention embodiment proposes a kind of computer-readable storage of non-transitory
Medium is stored thereon with computer program, which is characterized in that is realized when the computer program is executed by processor as right is wanted
Seek any single pixel phase imaging method based on amplitude modulation of 1-5.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the light path schematic diagram of the single pixel phase imaging method based on amplitude modulation of the embodiment of the present invention；
Fig. 2 is the flow diagram of the single pixel phase imaging method based on amplitude modulation of the embodiment of the present invention；
Fig. 3 is the amplitude modulation pattern schematic diagram of the embodiment of the present invention；
Fig. 4 is the single pixel phase imaging process schematic based on amplitude modulation of the embodiment of the present invention；
Fig. 5 is the simulation result diagram of the embodiment of the present invention；
Fig. 6 is the single pixel phase imaging apparatus structure schematic diagram based on amplitude modulation of the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
For in the prior art, conventional phase imaging method light path calibration is complicated, imaging band is limited and is based on phase
The problem of single pixel phase imaging method light efficiency of modulation is low, poor robustness, the invention proposes one kind to be modulated based on amplitude
Single pixel phase imaging method.
The invention proposes a kind of single pixel phase imaging method based on amplitude modulation, single pixel imaging, which uses, only to be had
The detector of single sensing unit carry out the light intensity of detecting object transmission or reflection.Since single point detector does not have spatial discrimination
Rate, single pixel imaging system is usually required by means of spatial light modulator, after being modulated with a series of modulation patterns to light, from
A series of light intensity values corresponding to different modulating pattern that detector measurement arrives rebuild the picture of object.Compared to conventional method, single picture
Element imaging have high s/n ratio, wide spectral range, low cost, system configuration flexibly etc. characteristics.
Below with reference to the accompanying drawings the single pixel phase imaging method and device based on amplitude modulation of the embodiment of the present invention are described.
For above-described embodiment, the embodiment of the invention provides a kind of single pixel phase imaging sides based on amplitude modulation
Method, method are applied in single pixel phase imaging optical path, as shown in Figure 1, single pixel phase imaging optical path is from left to right successively wrapped
It includes: light source, spatial light modulator, target object and single pixel detector.In one embodiment of the invention, light source is laser
Light source, spatial light modulator are Digital Micromirror Device, and obtained light intensity is acted on by the convergence of lens, to be obtained by detector
It takes, detector is single pixel detector.
As shown in Fig. 2, the single pixel phase imaging method that should be modulated based on amplitude the following steps are included:
Step 101, multiple amplitude modulation patterns are obtained, and multiple amplitude modulation patterns are successively loaded onto space light modulation
Device.
Specifically, in one embodiment of the invention, each amplitude modulation pattern in multiple amplitude modulation patterns, such as
Shown in Fig. 3, comprising: random greyscale pattern, random 0-1 pattern, sinusoidal pattern, any one in Hadamard pattern.Multiple width
Degree modulation pattern is generated by computer, and in the present embodiment, each amplitude modulation pattern uses random 0-1 pattern, and computer produces
Raw multiple amplitude modulation pattern numbers are 4 times of target object pixel number to be reconstructed, after obtaining multiple amplitude modulation patterns,
Multiple amplitude modulation patterns are loaded into spatial light modulator in order.
Step 102, control spatial light modulator is successively according to multiple amplitude modulation patterns to the light after default modulation of source
Source is projected to target object.
Specifically, control spatial light modulator is successively according to multiple amplitude modulation patterns to the light source after default modulation of source
It is projected to target object, to obtain the modulated pattern of the target object.
Step 103, it is successively obtained after multiple amplitude modulation patterns are projected to target object respectively by single pixel detector
Multiple central light strengths of corresponding optical Fourier plane.
Specifically, it is synchronous in order by single pixel detector, it successively obtains multiple amplitude modulation patterns and is projected to respectively
Multiple central light strengths of corresponding optical Fourier plane after target object, such as: multiple amplitude modulation patterns can be thrown respectively
Multiple modulated patterns after being incident upon target object input preset imaging mathematical model, obtain the more of optical Fourier plane
A central light strength, wherein the formula of mathematical model formula as follows (1) is imaged:
Wherein,For m-th of amplitude modulation pattern,For the complex pattern of target object, i
It is discrete coordinates (i=1,2 ... n, j=1,2 ... n) with j, ⊙ indicates dot-product operation,Two-dimensional matrix is sought in expression
And operation,Corresponding to the central light strength of m-th of amplitude modulation pattern, that is, the measured value of last single pixel.
Step 104, according to the phase recovery optimization algorithm of alternating projection to multiple amplitude modulation patterns and corresponding multiple
Central light strength calculates, and obtains the amplitude-phase information of target object, and the image of target object is determined according to amplitude-phase information.
It should be understood that being based on single pixel image-forming principle, it can be calculated based on corresponding multiple central light strengths, obtain mesh
The amplitude information and phase information of object are marked, and amplitude information and phase information reflect the shape etc. of target object, thus, it can
The image of target object is determined based on amplitude-phase information.
Wherein, phase recovery optimization algorithm, comprising: based on alternative projection algorithm, be based on Wirtinger Flow algorithm, base
Any one in Semidefinite Programming algorithm.
As a kind of mode in the cards of the embodiment of the present invention, as shown in figure 5, in order to from M single pixel measured value Im
The complex pattern O (i, j) that target object is rebuild in (m=1,2 ..., M), in specific example, using the weight in alternating projection method
Folded association iteration engine (PIE) algorithm.Further, one of the reconstruction process from the complex pattern O (i, j) of target object it is random
Conjecture value starts to be calculated, and the following steps are included:
Step 301, the related plane of target object is calculated by the modulated wavefront Ψ of amplitudem(i, j)=Pm(i,j)⊙O
The wavefront of (i, j) and single pixel detector plane
Step 302, with true measurement ImAmplitude replacement is carried out to calculated detector plane wavefront:
Amplitude replacement is carried out using following formula (2), wherein in formula (2), Φm(i, j) is single pixel detector
The wavefront of plane, ImIt is true measurement.
Step 303, it is calculated in Fourier with formula (3) and updates objective plane wavefront Ψm(i,j)。
Formula (3) as follows, wherein in formula (3),Indicate two-dimensional Fourier transform, δ (i, j) indicates two dimension punching
Swash function,It is that detector plane wavefront carries out the replaced value of amplitude.
Step 304, the complex pattern O for updating target object is obtained with formula (4)updated(i,j)。
As follows, wherein in formula (4), α is learning rate, O to formula (4)updated(i, j) is updated target object
Complex pattern, O (i, j) is the complex pattern of target object,For the conjugation of m-th of modulation pattern, Pm(i, j) is m-th
Amplitude modulation pattern, Ψm(i, j) is that the related plane of target object passes through the modulated wavefront of amplitude,For more
Wavefront after new.
Step 305, by the reconstructed results O of target objectupdatedThe input value O (i, j) of (i, j) as next iteration.
Further, step 301-304 is repeated, the update of target object is successively carried out for M single pixel measured value, and
Step 301-305 is repeated until convergence.The condition of convergence is the reconstructed results O (i, j) and O of adjacent iteration twiceupdated(i, j) it
Between less than one threshold value of difference.
In order to verify the validity of the above method, the present embodiment is distinguished using " Lena " and " cameraman " two picture
Amplitude and phase information as target object is emulated, as shown in figure 4, by " Lena " and " cameraman " two figures
The corresponding amplitude and phase information of piece carries out amplitude modulation and single pixel acquisition process, obtains the measurement of corresponding single pixel
Value, in turn, as shown in figure 5, using the measured value of single pixel as the simulation result of the collected one-dimensional signal of single pixel detector,
It is rebuild using PIE algorithm, reconstructed results are as shown in figure 5, it is not difficult to find that the Amplitude-Phase information and target of reconstructed results
Object is consistent, and the single pixel phase imaging method quality of the invention based on amplitude modulation is higher.
Single pixel phase imaging method based on amplitude modulation in the present embodiment, solves single pixel phase in the prior art
There are optical path complexity, the technical issues of light efficiency is poor, poor robustness, has without carrying out phase pattern spatial light tune imaging method
System has high light flux and high modulation rate, introduces optimization algorithm and carries out width-phase information reconstruction, has strong robustness, high noise
Than, wide spectral range, low cost, system configuration flexibly etc. significant advantage.
In order to realize above-described embodiment, the present invention also proposes a kind of single pixel phase imaging device based on amplitude modulation,
Device is applied in single pixel phase imaging optical path, as shown in Figure 1, single pixel phase imaging optical path from left to right successively includes:
Light source, spatial light modulator, target object and single pixel detector.
Fig. 6 is the single pixel phase imaging apparatus structure schematic diagram based on amplitude modulation of the embodiment of the present invention.
As shown in fig. 6, device includes: loading module 10, the acquisition acquisition module of module 30, second of projection module 20, first
40 and determining module 50, wherein loading module 10 modulates multiple amplitudes for obtaining multiple amplitude modulation patterns, and successively
Pattern is loaded onto spatial light modulator, then by projection module 20, controls spatial light modulator successively according to multiple amplitude tune
Then pattern first obtains module 30, is detected by single pixel to the light source projects after default modulation of source to target object
Device successively obtains multiple centers that multiple amplitude modulation patterns are projected to corresponding optical Fourier plane after target object respectively
Light intensity obtains module 40 by second again later, is modulated and is schemed to multiple amplitudes according to the phase recovery optimization algorithm of alternating projection
Case and corresponding multiple central light strengths calculate, and obtain the amplitude-phase information of target object, finally by determining module 50, according to
Amplitude-phase information determines the image of target object.
Specifically, in the present embodiment, light source is laser light source, spatial light modulator is Digital Micromirror Device, detector
For single pixel detector.Modulated light and target object interact, and acquire amplitude tune in end of probe single pixel detector
Pattern irradiates the central light strength of corresponding optical Fourier plane when target object.Each width in multiple amplitude modulation patterns
Modulation pattern is spent, as shown in Figure 3, comprising: random greyscale pattern, random 0-1 pattern, sinusoidal pattern, appointing in Hadamard pattern
It anticipates one kind.
It should be noted that the aforementioned explanation to the single pixel phase imaging method embodiment modulated based on amplitude
Suitable for the single pixel phase imaging device based on amplitude modulation of the embodiment, details are not described herein again.
The embodiment of the present invention based on amplitude modulation single pixel phase imaging device, by loading module, projection module,
First obtains module, second obtains module and determining module, solves in the prior art that there are light for single pixel phase imaging method
The technical issues of road is complicated, and light efficiency is poor, poor robustness has without carrying out the light modulation of phase pattern space, logical with bloom
Amount and high modulation rate introduce optimization algorithm and carry out width-phase information reconstruction, strong robustness, high s/n ratio, wide spectral range, low
Cost, system configuration flexibly etc. characteristics.
Based on the above embodiment, the embodiment of the invention also provides a kind of computer equipment, including memory, processor and
The computer program that can be run on a memory and on a processor is stored, when processor executes computer program, is realized as above
State the described single pixel phase imaging method based on amplitude modulation of embodiment.
In order to realize above-described embodiment, the present invention also proposes a kind of non-transitorycomputer readable storage medium, computer
The single pixel phase imaging method based on amplitude modulation as described in above-described embodiment is realized when program is executed by processor.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
The embodiment of the present invention is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as to limit of the invention
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of the invention
Type.
Claims (10)
1. a kind of single pixel phase imaging method based on amplitude modulation, which is characterized in that the method is applied in single pixel phase
In the imaging optical path of position, the single pixel phase imaging optical path from left to right successively includes: light source, spatial light modulator, object
Body and single pixel detector, the described method comprises the following steps:
Multiple amplitude modulation patterns are obtained, and the multiple amplitude modulation pattern is successively loaded onto the spatial light modulator；
The spatial light modulator is controlled successively to throw the light source after default modulation of source according to the multiple amplitude modulation pattern
It is incident upon target object；
It is successively obtained after the multiple amplitude modulation pattern is projected to the target object respectively by the single pixel detector
Multiple central light strengths of corresponding optical Fourier plane；
According to the phase recovery optimization algorithm of alternating projection to the multiple amplitude modulation pattern and corresponding the multiple center
Light intensity calculates, and obtains the amplitude-phase information of the target object, and determine the object according to the amplitude-phase information
The image of body.
2. the method as described in claim 1, which is characterized in that the light source is coherent source, the spatial light modulator packet
Include but be not limited to Digital Micromirror Device, LCD, LCOS.
3. the method as described in claim 1, which is characterized in that each amplitude in the multiple amplitude modulation pattern modulates figure
Case, comprising:
Random greyscale pattern, random 0-1 pattern, sinusoidal pattern, any one in Hadamard pattern.
4. the method as described in claim 1, which is characterized in that it is described successively obtained by the single pixel detector it is described more
A amplitude modulation pattern is projected to multiple central light strengths of corresponding optical Fourier plane after the target object respectively, packet
It includes:
Multiple patterns after the multiple amplitude modulation pattern to be projected to the target object respectively input preset imaging number
Model is learned, the multiple central light strength is obtained, wherein the formula of the imaging mathematical model is as follows:
Wherein,For m-th of amplitude modulation pattern,For the complex pattern of the target object, i
It is discrete coordinates (i=1,2 ... n, j=1,2 ... n) with j, ⊙ indicates dot-product operation,Two-dimensional matrix is sought in expression
And operation,Central light strength corresponding to m-th of amplitude modulation pattern.
5. the method as described in claim 1, which is characterized in that the phase recovery optimization algorithm, comprising:
Based on alternative projection algorithm, based on Wirtinger Flow algorithm, based on any one in Semidefinite Programming algorithm.
6. a kind of single pixel phase imaging device based on amplitude modulation, which is characterized in that described device is applied in single pixel phase
In the imaging optical path of position, the single pixel phase imaging optical path from left to right successively includes: light source, spatial light modulator, object
Body and single pixel detector, described device include:
The multiple amplitude modulation pattern for obtaining multiple amplitude modulation patterns, and is successively loaded onto described by loading module
Spatial light modulator；
Projection module, for controlling the spatial light modulator successively according to the multiple amplitude modulation pattern to default light source tune
Light source projects after system are to target object；
First obtains module, projects respectively for successively obtaining the multiple amplitude modulation pattern by the single pixel detector
Multiple central light strengths of corresponding optical Fourier plane after to the target object；
Second obtains module, for according to the phase recovery optimization algorithm of alternating projection to the multiple amplitude modulation pattern and right
The multiple central light strength answered calculates, and obtains the amplitude-phase information of the target object；
Determining module, for determining the image of the target object according to the amplitude-phase information.
7. device as claimed in claim 6, which is characterized in that the light source is coherent source, the spatial light modulator packet
Include but be not limited to Digital Micromirror Device, LCD, LCOS.
8. device as claimed in claim 6, which is characterized in that each amplitude in the multiple amplitude modulation pattern modulates figure
Case, comprising:
Random greyscale pattern, random 0-1 pattern, sinusoidal pattern, any one in Hadamard pattern.
9. a kind of computer equipment, which is characterized in that including memory, processor and be stored on the memory and can be in institute
The computer program run on processor is stated, when the processor executes the computer program, realizes that claim 1-5 such as appoints
Single pixel phase imaging method based on amplitude modulation described in one.
10. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the meter
Calculation machine program realizes the single pixel phase imaging a method as claimed in any one of claims 1 to 5 based on amplitude modulation when being executed by processor
Method.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110807822A (en) * | 2019-10-14 | 2020-02-18 | 北京理工大学 | Speckle correlation imaging method and device based on Wirtinger Flow algorithm |
| CN111556257A (en) * | 2020-04-17 | 2020-08-18 | 北京理工大学 | Imaging method and device based on narrow dynamic range acquisition and adaptive phase recovery |
| CN111553971A (en) * | 2020-04-14 | 2020-08-18 | 北京理工大学 | Rapid full-field-of-view complex field imaging method and device based on cubic binary modulation |
| CN111649691A (en) * | 2020-03-06 | 2020-09-11 | 福州大学 | Digital fringe projection three-dimensional imaging system and method based on single-pixel detector |
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| CN112804513A (en) * | 2021-01-05 | 2021-05-14 | 暨南大学 | Light field camera and imaging method |
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| CN114289879A (en) * | 2022-01-13 | 2022-04-08 | 北京理工大学 | Method for integrating multiple micro capacitors by single preparation of ultrafast laser |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011107140A (en) * | 2009-11-20 | 2011-06-02 | Mitsutoyo Corp | Apparatus and method for determining height map of surface of object |
| JP2013502102A (en) * | 2009-08-13 | 2013-01-17 | 富士通株式会社 | Phase recovery apparatus, phase recovery method, and receiver for 16QAM data modulation |
| CN103234482A (en) * | 2013-04-07 | 2013-08-07 | 哈尔滨工程大学 | Structured light measuring system calibration method based on sinusoidal grating |
| CN105467806A (en) * | 2015-01-06 | 2016-04-06 | 四川大学 | Single-pixel holographic camera |
| CN105627952A (en) * | 2015-12-25 | 2016-06-01 | 暨南大学 | Object three-dimensional shape measurement method using single pixel detector and device thereof |
| US20160255240A1 (en) * | 2013-10-30 | 2016-09-01 | Hewlett-Packard Development Company L.P. | Halftoning |
| CN106371201A (en) * | 2016-11-03 | 2017-02-01 | 清华大学 | Fourier overlapping correlation imaging system and method based on computational ghost imaging |
| CN106408500A (en) * | 2016-09-13 | 2017-02-15 | 华北水利水电大学 | Image encryption and decryption method based on phase recovery algorithm and calculation correlated imaging |
| CN106530223A (en) * | 2016-11-28 | 2017-03-22 | 清华大学 | Fast Fourier ghost imaging method and system based on frequency domain modulation |
| US20170131089A1 (en) * | 2015-11-06 | 2017-05-11 | Intel Corporation | Systems, methods, and apparatuses for implementing maximum likelihood image binarization in a coded light range camera |
| CN107063128A (en) * | 2016-04-29 | 2017-08-18 | 华南师范大学 | A kind of double frequency phase shift method for three-dimensional measurement and system |
| CN107241550A (en) * | 2017-06-26 | 2017-10-10 | 清华大学 | Based on time-multiplexed quick single pixel frequency domain imaging method |
| CN107306333A (en) * | 2016-12-07 | 2017-10-31 | 暨南大学 | A kind of high speed single pixel imaging method |
-
2019
- 2019-05-30 CN CN201910461680.XA patent/CN110132175B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013502102A (en) * | 2009-08-13 | 2013-01-17 | 富士通株式会社 | Phase recovery apparatus, phase recovery method, and receiver for 16QAM data modulation |
| JP2011107140A (en) * | 2009-11-20 | 2011-06-02 | Mitsutoyo Corp | Apparatus and method for determining height map of surface of object |
| CN103234482A (en) * | 2013-04-07 | 2013-08-07 | 哈尔滨工程大学 | Structured light measuring system calibration method based on sinusoidal grating |
| US20160255240A1 (en) * | 2013-10-30 | 2016-09-01 | Hewlett-Packard Development Company L.P. | Halftoning |
| CN105467806A (en) * | 2015-01-06 | 2016-04-06 | 四川大学 | Single-pixel holographic camera |
| US20170131089A1 (en) * | 2015-11-06 | 2017-05-11 | Intel Corporation | Systems, methods, and apparatuses for implementing maximum likelihood image binarization in a coded light range camera |
| CN105627952A (en) * | 2015-12-25 | 2016-06-01 | 暨南大学 | Object three-dimensional shape measurement method using single pixel detector and device thereof |
| CN107063128A (en) * | 2016-04-29 | 2017-08-18 | 华南师范大学 | A kind of double frequency phase shift method for three-dimensional measurement and system |
| CN106408500A (en) * | 2016-09-13 | 2017-02-15 | 华北水利水电大学 | Image encryption and decryption method based on phase recovery algorithm and calculation correlated imaging |
| CN106371201A (en) * | 2016-11-03 | 2017-02-01 | 清华大学 | Fourier overlapping correlation imaging system and method based on computational ghost imaging |
| CN106530223A (en) * | 2016-11-28 | 2017-03-22 | 清华大学 | Fast Fourier ghost imaging method and system based on frequency domain modulation |
| CN107306333A (en) * | 2016-12-07 | 2017-10-31 | 暨南大学 | A kind of high speed single pixel imaging method |
| CN107241550A (en) * | 2017-06-26 | 2017-10-10 | 清华大学 | Based on time-multiplexed quick single pixel frequency domain imaging method |
Non-Patent Citations (2)
| Title |
|---|
| GAROI, FLORIN 等: "THz Laser Beam Profiling by Homogeneous Photodoping of High Resistivity Silicon in a Compact Single-Pixel Detection Setup", 《IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY》 * |
| 范晓杭: "基于空间光调制器的单像素成像实验研究", 《中国优秀硕士学位论文全文数据库信息科技辑（月刊 ）》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110807822A (en) * | 2019-10-14 | 2020-02-18 | 北京理工大学 | Speckle correlation imaging method and device based on Wirtinger Flow algorithm |
| CN110807822B (en) * | 2019-10-14 | 2022-03-22 | 北京理工大学 | Speckle correlation imaging method and device based on Wirtinger Flow algorithm |
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| CN112200264B (en) * | 2020-10-26 | 2023-08-15 | 北京理工大学 | High-flux imaging-free classification method and device based on scattering multiplexing |
| CN112804513A (en) * | 2021-01-05 | 2021-05-14 | 暨南大学 | Light field camera and imaging method |
| CN112804513B (en) * | 2021-01-05 | 2023-02-17 | 暨南大学 | Light field camera and imaging method |
| CN114018819A (en) * | 2021-03-22 | 2022-02-08 | 北京航空航天大学 | Optical characteristic measuring method, device and system based on space frequency domain imaging |
| CN114018819B (en) * | 2021-03-22 | 2022-11-11 | 北京航空航天大学 | Optical characteristic measuring method, device and system based on space frequency domain imaging |
| CN114289879A (en) * | 2022-01-13 | 2022-04-08 | 北京理工大学 | Method for integrating multiple micro capacitors by single preparation of ultrafast laser |
| CN114289879B (en) * | 2022-01-13 | 2023-02-17 | 北京理工大学 | Method for integrating multiple micro capacitors by single preparation of ultrafast laser |
| CN114710615A (en) * | 2022-06-08 | 2022-07-05 | 中国人民解放军国防科技大学 | Efficient single-pixel imaging method and system |
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