CN108873660A - The method, device and equipment of holographic imaging based on single spatial light modulator - Google Patents
The method, device and equipment of holographic imaging based on single spatial light modulator Download PDFInfo
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- 238000003384 imaging method Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004364 calculation method Methods 0.000 claims abstract description 19
- 238000001093 holography Methods 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 238000007781 pre-processing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 15
- 230000002688 persistence Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/0443—Digital holography, i.e. recording holograms with digital recording means
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
- G03H1/0866—Digital holographic imaging, i.e. synthesizing holobjects from holograms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/10—Processes or apparatus for producing holograms using modulated reference beam
- G03H1/12—Spatial modulation, e.g. ghost imaging
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/08—Synthesising holograms, i.e. holograms synthesized from objects or objects from holograms
- G03H1/0808—Methods of numerical synthesis, e.g. coherent ray tracing [CRT], diffraction specific
- G03H2001/0816—Iterative algorithms
Abstract
The invention discloses method, apparatus, equipment and the computer readable storage mediums of a kind of holographic imaging based on single spatial light modulator, including：After calculating the original hologram for obtaining imageable target, the position coordinate parameters on holographic facet in the holographic calculation formula of the original hologram are modified, to obtain several holograms that band is offset；Addition is free of the black picture element of any information between adjacent pixel in the every width hologram for including original hologram respectively, obtains several the equivalent holograms being corresponding in turn to several described holograms；Several described equivalent holograms are loaded onto spatial light modulator, so that several described equivalent holograms be made to be superimposed the frame image to form the imageable target.Method, apparatus, equipment and computer readable storage medium provided by the present invention improve the resolution ratio of spatial light modulator imaging.
Description
Technical field
The present invention relates to 3 dimension imaging technology fields, more particularly to a kind of holographic imaging based on single spatial light modulator
Method, apparatus, equipment and computer readable storage medium.
Background technique
It is the true Three-dimensional Display reproduced based on light field that holographic 3 D, which is shown, and the full depth needed with human eye implies
Information.Spatial light modulator is to realize the core devices of dynamic holographic Three-dimensional Display, it is based on diffraction principle can be hologram
The object light field information regeneration of middle record comes out.Due to the discretization dot structure of spatial light modulator, so that its imaging effect has
There are multiple orders of diffraction, optical energy utilization efficiency is low, while every grade of field angle is smaller, and imaging effect is undesirable.Computer and holography
The combination of technology makes the more efficient convenience of holographic map generalization, it is no longer necessary to carry out complicated optics generating process.Holographic imaging
Effect mainly limited by spatial light modulator performance, the front size of spatial light modulator determines that it can show
Object resolution, Pixel Dimensions determine its field angle and resolution ratio.By the restriction of these two aspects, current spatial light tune
Device image quality processed is not generally high.
In the case where dimension of object and certain recording distance, hologram record is can be improved in the size for increasing hologram
Object light angular spectrum frequency range, and then the resolution ratio of imaging can be improved.The size of hologram generally determines by spatial light modulator,
And in the case where spatial light modulation device has determined, size can not change.
There is scholar that synthetic aperture thought is introduced into hologram calculating, proposes the holographic super-resolution based on synthetic aperture
Imaging respectively translates the corresponding hologram location of single spatial light modulator in upper and lower, left and right four direction, calculates nine
The hologram of adjacent position, this is equivalent to the size for increasing hologram, and then this nine width hologram is reproduced respectively,
Obtained reproduction image superposition to one piece, so that it may form the imaging for being higher than single hologram reconstruction image resolution ratio.It is this
Method needs multiple spatial light modulators when carrying out optical imagery, and reproduces image between different modulating device can be accurate
It is overlapped, there are many difficulties in practical optical imaging procedures, is difficult to carry out.
In summary as can be seen that the resolution ratio for how improving spatial light modulator imaging is that have to be solved ask at present
Topic.
Summary of the invention
The object of the present invention is to provide a kind of method, apparatus of holographic imaging based on single spatial light modulator, equipment with
And computer readable storage medium, in order to solve in the prior art as space light modulating pixels size it is not small enough caused by
As the low problem of resolution ratio.
In order to solve the above technical problems, the present invention provides a kind of method of holographic imaging based on single spatial light modulator,
Including：Calculate obtain imageable target original hologram after, modify in the holographic calculation formula of the original hologram complete
Position coordinate parameters on breath face, to obtain several holograms that band is offset；Respectively in every width including original hologram
Addition is free of the black picture element of any information between adjacent pixel in hologram, obtains being corresponding in turn to several described holograms more
Equivalent hologram；Several described equivalent holograms are loaded onto spatial light modulator, to make several described equivalent holographies
Figure superposition forms a frame image of the imageable target.
Preferably, the original hologram for calculating acquisition imageable target includes：
Pass throughIt is original to calculate acquisition imaging purpose
Hologram；
Wherein, xh,yhFor the transverse and longitudinal coordinate on holographic facet, n is the object point number of original hologram record, ajFor object point
Amplitude, λ are the wavelength of Object light wave, xj,yj,zjFor the coordinate of object point.
Preferably, the position coordinates ginseng on holographic facet in the holographic calculation formula of the modification original hologram
Number, to obtain several holograms that band is offset and include：
As unit of a spatial light modulator pixel in the holographic calculation formula of the original hologram in holography
Position coordinate parameters on face are modified, to obtain several holograms for having offset.
Preferably, it is described as unit of a spatial light modulator pixel to the holographic calculation formula of the original hologram
In the position coordinate parameters on holographic facet modify, to obtain and include with several holograms of offset：
The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis positive direction, obtains second
Hologram；The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis negative direction, it is complete to obtain third
Breath figure；The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains the 4th holography
Figure；The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 5th holography
Figure；The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains the 6th holography
Figure；The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 7th holography
Figure；The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains eight convergent points breath
Figure；The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 9th holography
Figure.
Preferably, the position coordinates ginseng on holographic facet in the holographic calculation formula of the modification original hologram
Number, to obtain several holograms that band is offset and include：
The position coordinate parameters on holographic facet in the holographic calculation formula of the original hologram are modified, to obtain
The 24 width holograms that band is offset.
The present invention also provides a kind of devices of holographic imaging based on single spatial light modulator, including：
Computing module modifies the holography of the original hologram after calculating the original hologram for obtaining imageable target
The position coordinate parameters on holographic facet in calculation formula, to obtain several holograms that band is offset；
Preprocessing module is appointed for adding to be free of between adjacent pixel in the every width hologram for including original hologram respectively
The black picture element of what information, obtains several the equivalent holograms being corresponding in turn to several described holograms；
Image-forming module, for several described equivalent holograms to be loaded onto spatial light modulator, thus make it is described several
Equivalent hologram is superimposed the frame image to form the imageable target.
Preferably, the computing module is specifically used for：
Pass throughCalculate the original for obtaining imageable target
Beginning hologram；
Wherein, xh,yhFor the transverse and longitudinal coordinate on holographic facet, n is the object point number of original hologram record, ajFor object point
Amplitude, λ are the wavelength of Object light wave, xj,yj,zjFor the coordinate of object point.
Preferably, the computing module is also used to：To the original holography as unit of a spatial light modulator pixel
The position coordinate parameters on holographic facet in the holographic calculation formula of figure are modified, to obtain several for having offset
Hologram.
The present invention also provides a kind of equipment of holographic imaging based on single spatial light modulator, including：
Memory, for storing computer program；Processor realizes above-mentioned one kind when for executing the computer program
The step of method of holographic imaging based on single spatial light modulator.
The present invention also provides a kind of computer readable storage medium, meter is stored on the computer readable storage medium
Calculation machine program, the computer program realize a kind of above-mentioned holographic imaging based on single spatial light modulator when being executed by processor
Method the step of.
The method of holographic imaging provided by the present invention based on single spatial light modulator, is calculated the original of imageable target
After beginning hologram, using the centre coordinate of the original hologram as two-dimensional plane coordinate origin；Modify the original hologram
The position coordinate parameters on holographic facet in holographic calculation formula, to obtain several holograms that band is offset.Due to sky
Between optical modulator can only show hologram as unit of whole pixel, cannot achieve with half location of pixels offset holography
Figure is shown, therefore obtains equivalent holography to addition black picture element between pixel unit adjacent in every width hologram in the present invention
Figure；And the black picture element of addition does not include any information, therefore will not influence the information for being recorded imageable target.According to people
Camera shutter speed is arranged in eye visual persistence effect, makes duration substantially phase of its time for exposure with human eye vision persistence effect
Deng；Switched at high speed in order to which several described equivalent holograms are loaded onto spatial light modulator, thus make it is described several
Equivalent hologram is superimposed the frame image to form the imageable target.The method of holographic imaging provided by the present invention, every frame at
It is obtained as the image of target is superimposed jointly by several width holograms, by these holograms being carried out in spatial light modulator height
Speed switching, so that it may realize these holograms at picture be superimposed together, formed a frame image.Hologram is passed through into addition black
After the method for pixel is changed into equivalent hologram, equivalent hologram is loaded directly into spatial light modulator, then institute at
Picture stack up, its purpose is to record the information on holographic facet at half of sample position.Compared to single holographic figure, close
Picture after is equivalent to hologram size constancy, and the sampling interval reduces half, and number of sample points increases one times.In hologram
Size constancy, the hologram sampling interval reduces, after sample point increase, object spatial frequencies range meeting that hologram can record
Become larger, be recorded object more details information so as to differentiate, realize beyond single spatial light modulator resolution ratio at
As effect.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the first specific implementation of the method for the holographic imaging provided by the present invention based on single spatial light modulator
The flow chart of example；
Fig. 2 is to obtain the schematic diagram of equivalent hologram by hologram；
Fig. 3 is second of specific implementation of the method for the holographic imaging provided by the present invention based on single spatial light modulator
The flow chart of example；
Fig. 4 is the schematic diagram of nine width holograms；
Fig. 5 is a kind of structural frames of the device of the holographic imaging based on single spatial light modulator provided in an embodiment of the present invention
Figure.
Specific embodiment
Core of the invention be to provide a kind of method, apparatus of holographic imaging based on single spatial light modulator, equipment with
And computer readable storage medium, the resolution ratio of spatial light modulator imaging is improved, is realized beyond single space light modulation
The imaging effect of device resolution ratio.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is the first of the method for the holographic imaging provided by the present invention based on single spatial light modulator
The flow chart of kind specific embodiment；Concrete operation step is as follows：
Step S101：After calculating the original hologram for obtaining imageable target, modifies the holographic of the original hologram and calculate
The position coordinate parameters on holographic facet in formula, to obtain several holograms that band is offset；
It can pass throughIt calculates and obtains imageable target
Original hologram；Wherein, xh,yhFor the transverse and longitudinal coordinate on holographic facet, n is the object point number of original hologram record, ajFor object
The amplitude of point, λ are the wavelength of Object light wave, xj,yj,zjFor the coordinate of object point.
Calculating for the hologram deviated by the original hologram, it is only necessary in the holography of original hologram
Corresponding offset Δ x, Δ y are added in the transverse and longitudinal coordinate of calculation formula, i.e.,：xh=xh+Δx,yh=yh+Δy。
The different hologram locations of the same frame imaging of the imageable target successively differ certain inclined in x and y direction
It moves, the offset is generally less than the size of spatial light modulator single pixel.
Step S102：Addition is free of any information between adjacent pixel in the every width hologram for including original hologram respectively
Black picture element, obtain several the equivalent holograms being corresponding in turn to several described holograms；
Since spatial light modulator can only show hologram as unit of whole pixel, cannot achieve with 1/2 location of pixels
The hologram of offset is shown, equivalent hologram is loaded into spatial light modulator using the method for interval display here, such as Fig. 2
It is shown.Hologram is changed into equivalent hologram by the method for adding black picture element first, the black picture element of addition does not include
Any information, therefore will not influence the information for being recorded object.Equivalent hologram is loaded directly into spatial light modulator, the time-division
The hologram of different location is deviated as unit of a spatial light modulator pixel in multiplexing method, one deviated here
Pixel is just equivalent to above 1/2 pixel of offset.
Step S103：Several described equivalent holograms are loaded onto spatial light modulator, so that several are equivalent described in making
Hologram is superimposed the frame image to form the imageable target.
By the way that camera shutter speed is arranged, so that its time for exposure and the duration of human eye vision persistence effect substantially phase
Deng to realize the imaging effect that simulation shooting human eye vision persists.Since the visual persistence effect duration of human eye is about
0.1-0.4 seconds, be here 1/6 grade by setting camera shutter speed, the time for opening shutter for about 0.17 second, simulates people
The picture that the eye persistence of vision is seen.
If the hologram location offset being directly calculated is half-pixel, spatial light modulator can not be directly corresponded to
Display is loaded.By adding black picture element between adjacent holograms pixel, so that hologram pixel and spatial light tune
Device pixel processed can form corresponding relationship in position, can be loaded into spatial light modulator；And every width hologram is in space
The position consistency of the position shown on optical modulator and oneself offset；It is cut by several holograms high speed with positional shift
It changes, using human eye vision persistence effect, the available imaging effect beyond single spatial light modulator resolution ratio.
Based on the above embodiment, several described holograms have between several holograms on the basis of the original hologram
Certain positional shift.Less than one pixel size of offset of every width hologram in addition to original hologram, can generally take
Half-pixel；And the offset of hologram has symmetry.Pass through the hologram that is deviated to the original hologram
Quantity is more, and imaging effect is better；The quantity of several holograms including the original hologram can be 9 width, can also
Think 25 width etc..In the present embodiment, method provided by the present invention is explained further below by taking 9 width holograms as an example
It is bright.
Referring to FIG. 3, Fig. 3 is the second of the method for the holographic imaging provided by the present invention based on single spatial light modulator
The flow chart of kind specific embodiment；Concrete operation step is as follows：
Step S301：Calculate the original hologram for obtaining imageable target；
Step S302：The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis positive direction,
Obtain the second hologram；
Step S303：The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis negative direction,
Obtain third hologram；
Step S304：The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis positive direction,
Obtain the 4th hologram；
Step S305：The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis negative direction,
Obtain the 5th hologram；
Step S306：The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis positive direction,
Obtain the 6th hologram；
Step S307：The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis negative direction,
Obtain the 7th hologram；
Step S308：The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis positive direction,
Obtain the 8th hologram；
Step S309：The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis negative direction,
Obtain the 9th hologram；
As shown in figure 4, (a) is the 7th hologram, (b) it is the second hologram, (c) is the 6th hologram, it is (d) complete for the 5th
Breath figure (e) is original hologram, (f) is the 4th hologram, (g) is the 9th hologram, (h) is third hologram, is (l) the
Eight holograms.
It should be noted that in the present embodiment, not limiting the execution sequence of the step S302- step S309
It is fixed.
Step S310：Addition is free of any information between adjacent pixel in the every width hologram for including original hologram respectively
Black picture element, obtain several the equivalent holograms being corresponding in turn to several described holograms；
Step S311：Several described equivalent holograms are loaded onto spatial light modulator, so that several are equivalent described in making
Hologram is superimposed the frame image to form the imageable target.
The method of holographic imaging based on single spatial light modulator provided by the present embodiment, by being carried out in time dimension
Subdivision makes spatial light modulator high speed refresh several holograms that display has certain displacement, is imitated using the persistence of vision of human eye
It answers, realizes the imaging effect for exceeding spatial light modulator resolution ratio.
Referring to FIG. 5, Fig. 5 is a kind of dress of the holographic imaging based on single spatial light modulator provided in an embodiment of the present invention
The structural block diagram set；Specific device may include：
Computing module 100, after calculating the original hologram for obtaining imageable target, using the original hologram as base
Standard respectively deviates the original hologram on the multiple preset directions of holographic facet within the scope of default bias, to obtain
Obtain several holograms including the original hologram；
Preprocessing module 200, for addition to be free of the black of any information between adjacent pixel in every width hologram respectively
Pixel obtains several the equivalent holograms being corresponding in turn to several described holograms；
Image-forming module 300, for the shutter speed of the spatial light modulator to be arranged according to human eye vision persistence effect in advance
Degree, several described equivalent holograms are loaded onto spatial light modulator, so that several described equivalent holograms be made to be superimposed to be formed
One frame image of the imageable target.
The device of the holographic imaging based on single spatial light modulator of the present embodiment is for realizing above-mentioned based on single space
The method of the holographic imaging of optical modulator, therefore the specific embodiment party in the device of the holographic imaging based on single spatial light modulator
The embodiment part of the method for the visible holographic imaging based on single spatial light modulator hereinbefore of formula, for example, computing module
100, preprocessing module 200, image-forming module 300 is respectively used to realize the above-mentioned holographic imaging based on single spatial light modulator
Step S101, S102 and S103 in method, so, specific embodiment is referred to retouching for corresponding various pieces embodiment
It states, details are not described herein.
The specific embodiment of the invention additionally provides a kind of equipment of holographic imaging based on single spatial light modulator, including：
Memory, for storing computer program；Processor is realized above-mentioned a kind of based on single empty when for executing the computer program
Between optical modulator holographic imaging method the step of.
The specific embodiment of the invention additionally provides a kind of computer readable storage medium, the computer readable storage medium
On be stored with computer program, the computer program is realized above-mentioned a kind of based on single spatial light modulator when being executed by processor
Holographic imaging method the step of.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above to the method, apparatus of the holographic imaging provided by the present invention based on single spatial light modulator, equipment and
Computer readable storage medium is described in detail.Specific case used herein is to the principle of the present invention and embodiment
It is expounded, the above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that
For those skilled in the art, without departing from the principle of the present invention, can also to the present invention into
Row some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of method of the holographic imaging based on single spatial light modulator, which is characterized in that including：
Calculate obtain imageable target original hologram after, modify in the holographic calculation formula of the original hologram in holography
Position coordinate parameters on face, to obtain several holograms that band is offset；
Addition is free of the black picture element of any information between adjacent pixel in the every width hologram for including original hologram respectively, obtains
To several the equivalent holograms being corresponding in turn to several described holograms；
Several described equivalent holograms are loaded onto spatial light modulator, so that several described equivalent holograms be made to be superimposed to be formed
One frame image of the imageable target.
2. the method as described in claim 1, which is characterized in that it is described calculate obtain imageable target original hologram include：
Pass throughIt calculates and obtains the initial complete of imageable target
Breath figure；
Wherein, xh,yhFor the transverse and longitudinal coordinate on holographic facet, n is the object point number of original hologram record, ajFor the amplitude of object point,
λ is the wavelength of Object light wave, xj,yj,zjFor the coordinate of object point.
3. the method as described in claim 1, which is characterized in that in the holographic calculation formula of the modification original hologram
The position coordinate parameters on holographic facet, to obtain several holograms that band is offset and include：
As unit of a spatial light modulator pixel in the holographic calculation formula of the original hologram on holographic facet
Position coordinate parameters modify, thus obtain have offset several holograms.
4. method as claimed in claim 3, which is characterized in that it is described as unit of a spatial light modulator pixel to described
The position coordinate parameters on holographic facet in the holographic calculation formula of original hologram are modified, and are offset to obtain band
Amount several holograms include：
The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis positive direction, obtains the second holography
Figure；
The ordinate of the original hologram is deviated into a spatial light modulator pixel along Y-axis negative direction, obtains third holography
Figure；
The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains the 4th holography
Figure；
The abscissa of the original hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 5th holography
Figure；
The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains the 6th holography
Figure；
The abscissa of second hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 7th holography
Figure；
The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis positive direction, obtains eight convergent points breath
Figure；
The abscissa of the third hologram is deviated into a spatial light modulator pixel along X-axis negative direction, obtains the 9th holography
Figure.
5. the method as described in claim 1, which is characterized in that in the holographic calculation formula of the modification original hologram
The position coordinate parameters on holographic facet, to obtain several holograms that band is offset and include：
The position coordinate parameters on holographic facet in the holographic calculation formula of the original hologram are modified, to be had
24 width holograms of offset.
6. a kind of device of the holographic imaging based on single spatial light modulator, which is characterized in that including：
Computing module is modified the holographic of the original hologram and is calculated after calculating the original hologram for obtaining imageable target
The position coordinate parameters on holographic facet in formula, to obtain several holograms that band is offset；
Preprocessing module, for addition to be free of any letter between adjacent pixel in the every width hologram for including original hologram respectively
The black picture element of breath obtains several the equivalent holograms being corresponding in turn to several described holograms；
Image-forming module, for several described equivalent holograms to be loaded onto spatial light modulator, so that several are equivalent described in making
Hologram is superimposed the frame image to form the imageable target.
7. device as claimed in claim 6, which is characterized in that the computing module is specifically used for：
Pass throughIt calculates and obtains the original complete of imageable target
Breath figure；
Wherein, xh,yhFor the transverse and longitudinal coordinate on holographic facet, n is the object point number of original hologram record, ajFor the amplitude of object point,
λ is the wavelength of Object light wave, xj,yj,zjFor the coordinate of object point.
8. device as claimed in claim 7, which is characterized in that the computing module is also used to：
As unit of a spatial light modulator pixel in the holographic calculation formula of the original hologram on holographic facet
Position coordinate parameters modify, thus obtain have offset several holograms.
9. a kind of equipment of the holographic imaging based on single spatial light modulator, which is characterized in that including：
Memory, for storing computer program；
Processor is realized a kind of based on single space as described in any one of claim 1 to 5 when for executing the computer program
The step of method of the holographic imaging of optical modulator.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program is realized a kind of based on single spatial light as described in any one of claim 1 to 5 when the computer program is executed by processor
The step of method of the holographic imaging of modulator.
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