CN107085838A - The minimizing technology and device of hologram noise - Google Patents
The minimizing technology and device of hologram noise Download PDFInfo
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- CN107085838A CN107085838A CN201710408021.0A CN201710408021A CN107085838A CN 107085838 A CN107085838 A CN 107085838A CN 201710408021 A CN201710408021 A CN 201710408021A CN 107085838 A CN107085838 A CN 107085838A
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Abstract
The invention discloses a kind of minimizing technology and device of hologram noise, it is related to image processing field, main purpose be used to solving the existing noise in hologram directly using filtering to hologram reconstruction as the detailed information in image can be destroyed so that the problem of the Quality Down of image.Technical scheme includes：Pending hologram is obtained, the hologram is the hologram containing speckle noise；Denoising is carried out to the hologram according to the neural net method with image denoising function；Default reproduction processes are carried out to the hologram after denoising, obtain the reproduction of hologram as；According to default filtering algorithm to the reproduction as filtering and noise reduction.It is mainly used in the removal of hologram noise.
Description
Technical field
The present invention relates to image processing field, more particularly to a kind of minimizing technology and device of hologram noise.
Background technology
Holography is a kind of can such as to include the technology of amplitude and phase information while record the full detail before Object light wave
Means, and with the development of computer technology, silver salt dry plate is replaced using optical sensor CCD, so as to obtain digitized complete
Breath figure, then by the data storage of obtained hologram among computer, computer can be according to the model of Diffraction of light wave to complete
Breath figure is reproduced, and realizes digital hologram.Digital hologram imaging is divided into two processes of optical recording and numerical reconstruction, numerical reconstruction
Process is, by the reproducing processes of computer simulation optical holographic, by numerical computations, to obtain as the COMPLEX AMPLITUDE of light wave fields, will
Gained intensity distribution and phase mehtod are shown over the display, you can the morphosis image for obtaining sample (reproduces
Picture).Different degrees of distortion is often produced during the collection of digital hologram, storage, processing, transmission, display etc., than
Such as different types of noise pollution, so as to produce influence to its quality.Such as speckle noise, these noises can influence the matter of image
Amount, and reduce signal to noise ratio.
At present, the method for the existing noise remove in hologram is to remove noise using filtering, still, is directly used
Filtering is to hologram reconstruction as that can destroy the detailed information in image so that the Quality Down of image.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome above mentioned problem or at least in part solve on
State the minimizing technology and device of a kind of hologram noise of problem.
A kind of minimizing technology of the hologram noise provided by above-mentioned technical proposal, the present invention, including：
Pending hologram is obtained, the hologram is the hologram containing speckle noise；
Denoising is carried out to the hologram according to the neural net method with image denoising function；
Default reproduction processes are carried out to the hologram after denoising, obtain the reproduction of hologram as；
According to default filtering algorithm to the reproduction as filtering and noise reduction.
A kind of removal device of the hologram noise provided by above-mentioned technical proposal, the present invention, including：
Acquiring unit, for obtaining pending hologram, the hologram is the hologram containing speckle noise；
First denoising unit, for being gone according to the neural net method with image denoising function to the hologram
Make an uproar；
Processing unit, for carrying out default reproduction processes to the hologram after denoising, obtain the reproduction of hologram as；
Second removes hot-tempered unit, for being reproduced according to default filtering algorithm to described as filtering and noise reduction.
The minimizing technology and device of a kind of hologram noise provided in an embodiment of the present invention, obtain pending holography first
Figure, the hologram is the hologram containing speckle noise, further according to the neural net method with image denoising function to institute
State hologram and carry out denoising, default reproduction processes are then carried out to the hologram after denoising, the reproduction of hologram are obtained as finally
According to default filtering algorithm to the reproduction as filtering and noise reduction, the method with the existing noise remove in hologram is to use
Filtering removes noise and compared, the embodiment of the present invention by using neutral net first to hologram denoising, then to denoising after
Hologram is reproduced as then to reproducing as being filtered denoising, realizing second denoising, obtaining higher Y-PSNR, change
It is apt to the visual effect of noisy hologram reconstruction picture, improves the efficiency for removing hologram noise, improves the quality of image.Described above
Only it is the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be according to specification
Content is practiced, and in order to which above and other objects of the present invention, feature and advantage can be become apparent, it is special below
Lift the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows a kind of flow chart of the minimizing technology for hologram noise that inventive embodiments are provided；
Fig. 2 shows the flow chart of the minimizing technology for another hologram noise that inventive embodiments are provided；
Fig. 3 shows a kind of block diagram of the removal device for hologram noise that inventive embodiments are provided；
Fig. 4 shows the block diagram of the removal device for another hologram noise that inventive embodiments are provided.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
The embodiment of the present invention provides a kind of minimizing technology of hologram noise, as shown in figure 1, methods described includes：
101st, pending hologram is obtained.
Wherein, the hologram is the hologram containing speckle noise, and the hologram is replaced by CCD optical sensors
Silver salt dry plate is shot, so as to be converted into digitized hologram, it is possible to stored in a computer, to be spread out according to light wave
The model penetrated reproduces to hologram.The generation of the speckle noise is due to that the laser of high correlation reflects in body surface
And coherent superposition, granular noise is formed on hologram.
It should be noted that because digital hologram is different from general image, very to being carried out using digital image methods
The algorithm of image restoration is not directly applicable in hologram, it is therefore desirable to using suitable for that can locate to digital hologram
The method of reason.It is, for example, possible to use Burch coding mode obtains the hologram of image.
102nd, denoising is carried out to the hologram according to the neural net method with image denoising function.
Wherein, the neural net method with image denoising function can use Pulse Coupled Neural Network PCNN,
For effectively removing the noise of image HFS, and retain removal image border part.
It should be noted that PCNN as third generation artificial neural network, be mainly used in image denoising in image procossing,
Image segmentation, image enhaucament, and because PCNN is a kind of network model of continuous domain, formed anti-is interconnected by several neurons
The complicated nonlinear dynamic system that feedback type neutral net is constituted.
103rd, default reproduction processes are carried out to the hologram after denoising, obtain the reproduction of hologram as.
Wherein, default reproduce is used to reproduce hologram as processing as handling, and specific method can be to complete
Breath figure carries out inverse discrete fourier transform, obtain the reproduction of hologram as.
It should be noted that because the method that image is changed into hologram is to take out the photo of actual object as object light
Sample obtains the thing function of discretization, then carries out obtaining hologram after discrete Fourier transform obtains Fourier transform spectrum, coding,
So the method for obtaining the reproduction elephant of hologram is to carry out inverse discrete fourier transform to hologram.
104th, reproduced according to default filtering algorithm to described as filtering and noise reduction.
Wherein, because speckle noise is multiplicative noise, so the default filtering algorithm is for removing multiplicative noise
Filtering algorithm, can be Lee filtering.Lee filtering is a kind of filter in spatial domain method, can be according to the statistics for giving image in window
Characteristic adjusts the result of filtering, therefore can greatly improve the effect for removing noise.
It should be noted that Lee filtering needs to consider to cause mean square error minimum on the basis of multiplicative noise, therefore in choosing
When taking mean square error, typically the theoretical mode of speckle noise can together be taken into account.
A kind of minimizing technology of hologram noise provided in an embodiment of the present invention, goes with the existing noise in hologram
The method removed be using filtering remove noise compare, the embodiment of the present invention by using neutral net first to hologram denoising,
Then the hologram after denoising is reproduced as then to reproducing as being filtered denoising, realizing second denoising, obtaining higher
Y-PSNR, improves the visual effect of noisy hologram reconstruction picture, improves the efficiency for removing hologram noise, improves image
Quality.
The embodiment of the present invention provides the minimizing technology of another hologram noise, as shown in Fig. 2 methods described includes：
201st, according to default speckle noise parameter, the hologram of pending image is generated.
Wherein, in order to clearly show noisy hologram reconstruction in the hologram of generation as holographic in generation
, it is necessary to set default speckle noise parameter during figure, the intensity of such as speckle noise, the default speckle noise parameter can have technology
Personnel are set in edit routine, and the embodiment of the present invention is not specifically limited.For example, default speckle noise intensity can be
0.01.In addition, before generation hologram gray proces can also be carried out to clapping the picture taken using CDD cameras.
For the embodiment of the present invention, step 201 can specifically include：The thing function after pending image sampling is extracted,
Discrete Fourier transform is carried out to the thing function, Fourier transform spectrum is obtained, passes through default hologram coded system and root
The speckle noise determined according to default speckle noise parameter is encoded to the Fourier transform spectrum, obtains the complete of pending image
Breath figure.
Wherein, the default hologram coded system is used for the Fourier transformation spectral encoding after discrete Fourier transform
Can be Burch coding for digital hologram, the embodiment of the present invention is not specifically limited, the thing function is that view data is entered
Obtained from line sampling, in order to carry out discrete Fourier transform, so as to obtain digital hologram.
202nd, pending hologram is obtained.
This step is identical with step 101 method shown in Fig. 1, will not be repeated here.
203rd, denoising is carried out to the hologram according to the neural net method with image denoising function.
This step is identical with step 102 method shown in Fig. 1, will not be repeated here.
204th, default reproduction processes are carried out to the hologram after denoising, obtain the reproduction of hologram as.
This step is identical with step 103 method shown in Fig. 1, will not be repeated here.
205th, reproduced according to default filtering algorithm to described as filtering and noise reduction.
This step is identical with step 104 method shown in Fig. 1, will not be repeated here.
206th, parsing go it is hot-tempered after reproduction elephant quality index parameter, have according to the quality index parameter adjustment
The parameter that image is gone in the neural net method and the default filtering algorithm of hot-tempered function.
Wherein, the quality index parameter includes Y-PSNR, equivalent number, speckle index, the neutral net side
When the parameter of method is using computer software progress data simulation, such as MATLAB, the parameter in neural network model specifically can be with
It is configured by technical staff, the embodiment of the present invention is not specifically limited.Parameter in the default filtering algorithm filters for Lee
Parameter when device is filtered, can be specifically configured, the embodiment of the present invention is not specifically limited by technical staff.Pass through solution
Analysis go it is hot-tempered after reproduction elephant quality index parameter, realize the quality evaluation after denoising.
It should be noted that analysis mass index parameter is respectively to determining Y-PSNR, equivalent number, speckle index
Various parameters be identified, for example, Y-PSNR can be very good the severe degree of noise in evaluation image, mathematical expression
(1) it is expressed as follows：
PSNR=10log10(2552/MSE) (1)；
Wherein, MSE represents the mean square error of image, and Y-PSNR is bigger, and the noise of image is smaller.Equivalent number is weighing apparatus
The objective indicator of the smoothness of spirogram picture, mathematical expression (2) is expressed as follows：
Wherein, μ and σ are respectively the average and standard deviation of entire image, and equivalent number is bigger, and image is more smooth.Speckle
The severe degree of speckle noise in measure image, mathematical expression (3) is expressed as follows：
Wherein, N illustrates the size of image, and σ (i, j) and μ (i, j) are the standard deviation of element gray value in window and be averaged
Value, speckle index is smaller, and image is more clear.
207th, by default parameters of the parameter tags after adjustment for removal hologram noise.
For the embodiment of the present invention, to remove again during hologram noise, directly gone using the default parameters
Make an uproar.The mark can be sign flag, or memory marker, the embodiment of the present invention is not specifically limited.In order to ensure
Each denoising can reach best denoising effect, be default parameters by the parameter tags after adjustment, realize with optimized parameter
Carry out denoising.
For example, after being parsed to Y-PSNR, equivalent number, speckle index, it may be determined that mass is best
Parameter in Y-PSNR, equivalent number, speckle index is respectively a, b, c, and labeled as the parameter of acquiescence, it is next in progress
During secondary denoising, directly a, b, c is utilized to carry out denoising.
For the embodiment of the present invention, specific application scenarios can be with as follows, but not limited to this, including：Utilize CCD phases
Machine claps the picture for taking an apple, generates the hologram of Apple image, is carried out after first time denoising, entered using PCNN neutral nets
Row reproduction processes, obtain the reproduction of hologram as being gone using Lee wave filters to the reproduction of Apple image as carrying out secondary filtering
Make an uproar, finally obtain the reproduction after denoising as.
The minimizing technology of another hologram noise provided in an embodiment of the present invention, the embodiment of the present invention passes through according to default
Speckle noise parameter generates hologram, then using PCNN neutral nets to hologram denoising, then to the hologram after denoising
Reproduced as then to reproducing as being filtered denoising, realizing second denoising, and parse the quality index of the reproduction elephant after denoising
Parameter, obtains the parameter of optimal denoising method, during so as to denoising again, directly using optimized parameter, realizes higher peak value letter
Make an uproar and compare, improve the visual effect of noisy hologram reconstruction picture, improve the efficiency for removing hologram noise, improve the quality of image.
Further, implementing as method shown in Fig. 1, the embodiment of the present invention provides a kind of going for hologram noise
Except device, as shown in figure 3, described device can include：Acquiring unit 31, the first denoising unit 32, processing unit 33, second go
Hot-tempered unit 34.
Acquiring unit 31, for obtaining pending hologram, the hologram is the hologram containing speckle noise；It is described
Acquiring unit 31 performs the functional module for obtaining pending hologram for the removal device of hologram noise.
First denoising unit 32, for being carried out according to the neural net method with image denoising function to the hologram
Denoising；The first denoising unit 32 is performed according to the nerve net with image denoising function for the removal device of hologram noise
Network method carries out the functional module of denoising to the hologram.
Processing unit 33, for carrying out default reproduction processes to the hologram after denoising, obtain the reproduction of hologram as；Institute
State the removal device that processing unit 33 is hologram noise to perform to the default reproduction processes of hologram progress after denoising, obtain complete
Cease the functional module of the reproduction elephant of figure.
Second removes hot-tempered unit 34, for being reproduced according to default filtering algorithm to described as filtering and noise reduction.Described second go it is hot-tempered
Unit 34 is performed according to default filtering algorithm to the reproduction as the function mould of filtering and noise reduction for the removal device of hologram noise
Block.The removal device of a kind of hologram noise provided in an embodiment of the present invention, with the existing noise remove in hologram
Method is to remove noise using filtering to compare, the embodiment of the present invention by using neutral net first to hologram denoising, then
Hologram after denoising is reproduced as then to reproducing as being filtered denoising, realizing second denoising, obtaining higher peak value
Signal to noise ratio, improves the visual effect of noisy hologram reconstruction picture, improves the efficiency for removing hologram noise, improves the matter of image
Amount.
The device embodiment is corresponding with preceding method embodiment, and for ease of reading, present apparatus embodiment is no longer to foregoing side
Detail content in method embodiment is repeated one by one, it should be understood that the device in the present embodiment can correspond to realize it is foregoing
Full content in embodiment of the method.
Further, implementing as method shown in Fig. 2, the embodiment of the present invention provides another hologram noise
Removal device, as shown in figure 4, described device can include：Acquiring unit 41, the first denoising unit 42, processing unit 43, second
Remove hot-tempered unit 44, generation unit 45, resolution unit 46, indexing unit 47.
Acquiring unit 41, for obtaining pending hologram, the hologram is the hologram containing speckle noise；
First denoising unit 42, for being carried out according to the neural net method with image denoising function to the hologram
Denoising；
Processing unit 43, for carrying out default reproduction processes to the hologram after denoising, obtain the reproduction of hologram as；
Second removes hot-tempered unit 44, for being reproduced according to default filtering algorithm to described as filtering and noise reduction.
Further, in order in order to can clearly show in the hologram of generation noisy hologram reconstruction as,
, it is necessary to set default speckle noise parameter during generation hologram, described device also includes：
Generation unit 45, for according to default speckle noise parameter, generating the hologram of pending image.
Further, for the ease of carrying out discrete Fourier transform, so that digital hologram is obtained, the generation unit 45
Including：
Extraction module 4501, for extracting the thing function after pending image sampling；
Conversion module 4502, for carrying out discrete Fourier transform to the thing function, obtains Fourier transform spectrum；
Coding module 4503, for what is determined by default hologram coded system and according to default speckle noise parameter
Speckle noise is encoded to the Fourier transform spectrum, obtains the hologram of pending image.
Further, for the quality evaluation after denoising, described device also includes：
Resolution unit 46, for parse go it is hot-tempered after reproduction elephant quality index parameter, according to the quality index parameter
The adjustment parameter gone with image in the neural net method and the default filtering algorithm of hot-tempered function.
Further, in order to ensure each denoising can reach best denoising effect, by the parameter tags after adjustment
For default parameters, realize and denoising is carried out with optimized parameter, described device also includes：
Indexing unit 47, for by default parameters of the parameter tags after adjustment for removal hologram noise, so as to again
When removing hologram noise, denoising is directly carried out using the default parameters.
The device embodiment is corresponding with preceding method embodiment, and for ease of reading, present apparatus embodiment is no longer to foregoing side
Detail content in method embodiment is repeated one by one, it should be understood that the device in the present embodiment can correspond to realize it is foregoing
Full content in embodiment of the method.
The removal device of another hologram noise provided in an embodiment of the present invention, the embodiment of the present invention passes through according to default
Speckle noise parameter generates hologram, then using PCNN neutral nets to hologram denoising, then to the hologram after denoising
Reproduced as then to reproducing as being filtered denoising, realizing second denoising, and parse the quality index of the reproduction elephant after denoising
Parameter, obtains the parameter of optimal denoising method, during so as to denoising again, directly using optimized parameter, realizes higher peak value letter
Make an uproar and compare, improve the visual effect of noisy hologram reconstruction picture, improve the efficiency for removing hologram noise, improve the quality of image.
The removal device of the hologram noise include processor and memory, above-mentioned acquiring unit, the first denoising unit,
Processing unit and second goes hot-tempered unit etc. in memory, memory to be stored in by computing device as program unit storage
In said procedure unit realize corresponding function.
Kernel is included in processor, is gone in memory to transfer corresponding program unit by kernel.Kernel can set one
Or more, the existing noise in hologram is solved by adjusting kernel parameter and directly uses filtering to hologram reconstruction as meeting
The detailed information destroyed in image so that the problem of the Quality Down of image.
Memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/
Or the form, such as read-only storage (ROM) or flash memory (flash RAM) such as Nonvolatile memory, memory is deposited including at least one
Store up chip.
Present invention also provides a kind of computer program product, when being performed on data processing equipment, it is adapted for carrying out just
The program code of beginningization there are as below methods step：Pending hologram is obtained, the hologram is the holography containing speckle noise
Figure；Denoising is carried out to the hologram according to the neural net method with image denoising function；Hologram after denoising is entered
The default reproduction processes of row, obtain the reproduction of hologram as；According to default filtering algorithm to the reproduction as filtering and noise reduction.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and internal memory.
Memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/
Or the form, such as read-only storage (ROM) or flash memory (flash RAM) such as Nonvolatile memory.Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
Embodiments herein is these are only, the application is not limited to.To those skilled in the art,
The application can have various modifications and variations.All any modifications made within spirit herein and principle, equivalent substitution,
Improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of minimizing technology of hologram noise, it is characterised in that including：
Pending hologram is obtained, the hologram is the hologram containing speckle noise；
Denoising is carried out to the hologram according to the neural net method with image denoising function；
Default reproduction processes are carried out to the hologram after denoising, obtain the reproduction of hologram as；
According to default filtering algorithm to the reproduction as filtering and noise reduction.
2. according to the method described in claim 1, it is characterised in that before the pending hologram of acquisition, methods described is also
Including：
According to default speckle noise parameter, the hologram of pending image is generated.
3. method according to claim 2, it is characterised in that the basis presets speckle noise parameter, is generated pending
The hologram of image includes：
Extract the thing function after pending image sampling；
Discrete Fourier transform is carried out to the thing function, Fourier transform spectrum is obtained；
The speckle noise determined by default hologram coded system and according to default speckle noise parameter is to the Fourier
Conversion spectrum is encoded, and obtains the hologram of pending image.
4. according to the method described in claim 1, it is characterised in that the basis is preset filtering algorithm and reproduced to described as filtering
After denoising, methods described also includes：
Parsing go it is hot-tempered after reproduction elephant quality index parameter, according to the quality index parameter adjustment have image go it is hot-tempered
Parameter in the neural net method of function and the default filtering algorithm.
5. method according to claim 4, it is characterised in that methods described also includes：
By the parameter tags after adjustment to remove the default parameters of hologram noise, to remove again during hologram noise, directly
Connect and denoising is carried out using the default parameters.
6. a kind of removal device of hologram noise, it is characterised in that including：
Acquiring unit, for obtaining pending hologram, the hologram is the hologram containing speckle noise；
First denoising unit, for carrying out denoising to the hologram according to the neural net method with image denoising function；
Processing unit, for carrying out default reproduction processes to the hologram after denoising, obtain the reproduction of hologram as；
Second removes hot-tempered unit, for being reproduced according to default filtering algorithm to described as filtering and noise reduction.
7. device according to claim 6, it is characterised in that described device also includes：
Generation unit, for according to default speckle noise parameter, generating the hologram of pending image.
8. device according to claim 7, it is characterised in that the generation unit includes：
Extraction module, for extracting the thing function after pending image sampling；
Conversion module, for carrying out discrete Fourier transform to the thing function, obtains Fourier transform spectrum；
Coding module, for the speckle noise determined by default hologram coded system and according to default speckle noise parameter
The Fourier transform spectrum is encoded, the hologram of pending image is obtained.
9. device according to claim 6, it is characterised in that described device also includes：
Resolution unit, for parse go it is hot-tempered after reproduction elephant quality index parameter, according to the quality index parameter adjustment institute
State the parameter gone with image in the neural net method and the default filtering algorithm of hot-tempered function.
10. device according to claim 9, it is characterised in that described device also includes：
Unit is identified, for by default parameters of the parameter tags after adjustment for removal hologram noise, to remove again entirely
When ceasing figure noise, denoising is directly carried out using the default parameters.
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