CN103941568B - The automatic super-resolution digital hologram imaging device of multidimensional and method - Google Patents
The automatic super-resolution digital hologram imaging device of multidimensional and method Download PDFInfo
- Publication number
- CN103941568B CN103941568B CN201410108178.8A CN201410108178A CN103941568B CN 103941568 B CN103941568 B CN 103941568B CN 201410108178 A CN201410108178 A CN 201410108178A CN 103941568 B CN103941568 B CN 103941568B
- Authority
- CN
- China
- Prior art keywords
- reproduction image
- resolution
- multidimensional
- super
- width
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Holo Graphy (AREA)
Abstract
The automatic super-resolution digital hologram imaging device of multidimensional and method, belong to optical diffraction imaging and Digital Holography field。First build the automatic super-resolution digital holography imaging device of multidimensional, utilize the grating orientation in computer modulation spatial light modulator, from 0 ° to 180 °, each 0.5 °, obtain 360 width digital holograms；Then 360 width digital holograms are carried out Fourier transformation by Matlab software, obtain reproduction image, and every width reproduction image has six sub-reproduction image separated；Finally utilize the frequency domain registration method with sub-pixel precision that six sub-reproduction image in each width reproduction image are accurately positioned, the different frequency information that wavelet transformation extracts the sub-reproduction image in 360 width reproduction image is adopted to be weighted merging, it is thus achieved that the reproduction image of multidimensional super-resolution。The present invention can obtain the hologram of several different directions orders of diffraction time automatically, improves digital hologram imaging resolution on multi-dimensional direction, can be used for fields such as the higher biomedicine of resolution requirement, micro-nano detections。
Description
Technical field
The invention discloses a kind of automatic super-resolution digital hologram imaging device of multidimensional and method, these apparatus and method belong to optical diffraction imaging and Digital Holography field。
Background technology
The resolution of digital holographic imaging systems is subject to the restriction of effective diaphragm, and the sensitive chip being mainly reflected in the imageing sensors such as CCD is smaller so that the physical optics restriction that its resolution limitations causes in diffraction of light。Simultaneously, owing to the Pixel size of CCD is subject to certain restrictions in manufacturing technology, it is the hundreds of line digital hologram to every millimeter that digital hologram can only obtain spatial frequency, causes the loss of Object light wave high-frequency information, has had a strong impact on the resolution of digital holographic imaging systems。Most simple effective method is the distance shortening object to CCD, but this is with the visual field sacrificing imaging system for cost, often cannot meet the demand of actually detected visual field in the case of an increasing resolution。In recent years, super-resolution technique is incorporated in digital hologram imaging by research worker gradually, and the method combining information optical imagery is theoretical from the numerical aperture raising imaging resolution of light path, it is easier to meet the demand of practical application。Mainly having three kinds of super-resolution digital hologram methods, the first is method for spacial multiplex, adopts CCD scan method to obtain the information of diffraction light diverse location, then the hologram of diverse location carries out synthesis and reproduces。The second is multiple beam means of illumination, and the method records a series of digital hologram successively by changing the incident direction of lighting light wave, they presses certain way synthesis and reproduces。The third is grating approach, utilizes grating to be collected by the high-frequency spectrum originally dropped on outside CCD。Spatial reuse and multiple beam means of illumination need mobile CCD or change illumination direction, are both needed to mechanically actuated。And it is entity grating based on what the super-resolution imaging of grating adopted at present, the resolution on one or two directions can only be improved, it is impossible to realize multidirectional super-resolution imaging。
Summary of the invention
In order to improve the resolution of digital holographic imaging systems in multiple directions, the invention provides the automatic super-resolution digital hologram imaging device of a set of multidimensional and method。
The automatic super-resolution digital holography imaging device of multidimensional, by laser instrument, fiber coupler, fiber optic splitter, optical fiber collimator, testing sample, spatial light modulator, beam cementing prism, imageing sensor and computer composition, described laser emitting end is assembled with described fiber coupler and fiber optic splitter successively, the laser beam of laser emitting is perpendicular to fiber coupler and fiber optic splitter, it is divided into two-beam through fiber optic splitter laser beam, wherein a branch of as reference light wave through the direct vertical incidence of optical fiber on described beam cementing prism, additionally a branch of incide described optical fiber collimator as Object light wave through fiber perpendicular, the Object light wave of optical fiber collimator outgoing impinges perpendicularly on described testing sample, testing sample front is sequentially placed described spatial light modulator, beam cementing prism and imageing sensor, its spatial light modulator and imageing sensor are connected with described computer, and, described spatial light modulator is amplitude type transmissive spatial photomodulator, grating angle therein is adjustable, and beam sizes is more than the region to be measured of testing sample。
Adopting the automatic super-resolution digital hologram imaging device of above-mentioned multidimensional can obtain super-resolution digital holography imaging, this formation method comprises the steps:
(1) several super-resolution digital holograms are recorded: utilize computer modulation spatial light modulator, the direction of the grating in spatial light modulator is adjusted from 0 ° to 180 °, regulating 0.5 °, computer controls imageing sensor and records 360 width digital holograms continuously every time；
(2) Reconstructed image is obtained: be stored in computer by the 360 width digital holograms obtained, it is programmed by Matlab software, respectively 360 width digital holograms being carried out Fourier transformation, obtain reproduction image, every width reproduction image has 6 sub-reproduction image separated；
(3) super-resolution Reconstructed image is obtained: utilize the frequency domain registration method with sub-pixel precision that six sub-reproduction image in each width reproduction image are accurately positioned, wavelet transformation is adopted to extract the different frequency information of the sub-reproduction image in 360 width reproduction image, it is weighted the different frequency information obtained merging, it is thus achieved that the reproduction image of multidimensional super-resolution。
Described laser instrument adopts centre wavelength to be the solid state laser of 532nm, and power is 300mW。
Described spatial light modulator adopts resolution to be 1920 × 1080 pixels, and Pixel size is the amplitude type transmissive spatial photomodulator of 8.5 μ m 8.5 μm。
Described imageing sensor adopts CCD to be 4016 × 2672 pixels, and pixel dimension is the CCD camera of 9 μ m 9 μm。
Beneficial effects of the present invention: the automatic super-resolution digital hologram imaging device of multidimensional and method, by spatial light modulator being loaded automatically the grating of different angles, collect multidirectional Object light wave high-frequency information, realize multidimensional super-resolution imaging, this formation method is without Mechanical Moving optical element and manual operations, the automatic super-resolution digital hologram imaging of multidimensional can be realized, can be used for applications such as the higher biomedicine of resolution requirement, micro-nano detections。
Accompanying drawing explanation
Fig. 1 is the automatic super-resolution digital holography imaging device index path of multidimensional。
1, laser instrument, 2, fiber coupler, 3, fiber optic splitter, 4, optical fiber collimator, 5, testing sample, 6, spatial light modulator, 7, beam cementing prism, 8 imageing sensors, 9, computer。
Detailed description of the invention
The automatic super-resolution digital hologram imaging device of multidimensional, is made up of laser instrument 1, fiber coupler 2, fiber optic splitter 3, optical fiber collimator 4, testing sample 5, spatial light modulator 6, beam cementing prism 7, imageing sensor 8 and computer 9, as shown in Figure 1。Laser instrument 1 in the automatic super-resolution digital holography imaging device of multidimensional is solid state laser, and the centre wavelength of employing is 532nm, and power is 300mW。Spatial light modulator 6 adopts resolution to be 1920 × 1080 pixels, and Pixel size is the amplitude type transmissive spatial photomodulator of 8.5 μ m 8.5 μm。Imageing sensor 8 adopts resolution to be 4016 × 2672 pixels, and pixel dimension is the CCD camera of 9 μ m 9 μm。
Laser instrument 1 exit end is assembled with fiber coupler 2 and fiber optic splitter 3 successively, the laser beam of laser instrument 1 outgoing is perpendicular to fiber coupler 2 and fiber optic splitter 3, it is divided into reference light and object light two-beam ripple through the laser beam of fiber optic splitter 3, reference light wave therein through the direct vertical incidence of optical fiber on beam cementing prism 7, Object light wave incides optical fiber collimator 4 through fiber perpendicular, the Object light wave of optical fiber collimator 4 outgoing impinges perpendicularly on testing sample 5, testing sample 5 front is sequentially placed spatial light modulator 6, beam cementing prism 7 and imageing sensor 8。Spatial light modulator 6 is connected with computer 9 with imageing sensor 8, utilizes computer 9 to be carried in spatial light modulator 6 by the grating of different angles。
Utilize computer to carry out imageing sensor 8 and the sequencing contro of spatial light modulator 6, the loading of the grating information of spatial light modulator 6 is realized by Labview software, after often loading an amplitude grating information, computer 9 controls imageing sensor 8 and records digital hologram, the grating of spatial light modulator 6 changes and nyctitropic is spaced apart 0.5 °, the cycle index 360 width digital hologram successively from 0 ° to 180 °。Each width digital hologram has the diffraction reconstruction picture of three levels time, obtains 360 width digital holograms continuously, and the reproduction image of 360 width digital holograms is overlapped。
Utilize the automatic super-resolution digital holography imaging device of multidimensional, super-resolution digital holography image can be obtained by following step:
1) by the automatic super-resolution digital holography imaging device of multidimensional, the reference light wave through fiber optic splitter 3 and the Object light wave through spatial light modulator 6 being interfered on beam cementing prism 7, the digital hologram obtained is gathered by imageing sensor 8。Wherein, utilizing computer 9 to modulate spatial light modulator 6, obtain the grating of different angles, the direction of grating is adjusted from 0 ° to 180 °, often regulating 0.5 °, imageing sensor 8 shoots a width digital hologram, obtains 360 width digital holograms, respectively H1, H2, Hi, HN, (wherein i=0,1,2,, N, N=360)。
2) Reconstructed image is obtained: be stored in computer 9 by the 360 width digital holograms obtained, it is programmed by Matlab software, respectively 360 width digital holograms are carried out Fourier transformation and obtain 360 width reproduction image, every width reproduction image has 6 sub-reproduction image separated, it is Oit wherein (t=1 respectively, 2,6)。
3) super-resolution Reconstructed image is obtained: utilize the frequency domain registration method with sub-pixel precision that 6 sub-reproduction image Oit in each width reproduction image are accurately positioned, wavelet transformation is adopted to extract the different frequency information of the sub-reproduction image in 360 width reproduction image, it is weighted the different frequency information obtained merging, it is thus achieved that the reproduction image of multidimensional super-resolution。
Claims (5)
1. the automatic super-resolution digital hologram imaging device of multidimensional, by laser instrument (1), fiber coupler (2), fiber optic splitter (3), optical fiber collimator (4), testing sample (5), spatial light modulator (6), beam cementing prism (7), imageing sensor (8) and computer (9) composition, it is characterized in that: described laser instrument (1) exit end is assembled with described fiber coupler (2) and fiber optic splitter (3) successively, the laser beam of laser instrument (1) outgoing is perpendicular to fiber coupler (2) and fiber optic splitter (3), it is divided into two-beam through fiber optic splitter (3) laser beam, wherein a branch of as reference light wave through the direct vertical incidence of optical fiber on described beam cementing prism (7), additionally a branch of incide described optical fiber collimator (4) as Object light wave through fiber perpendicular, the Object light wave of optical fiber collimator (4) outgoing impinges perpendicularly on described testing sample (5), testing sample (5) front is sequentially placed described spatial light modulator (6), beam cementing prism (7) and imageing sensor (8), its spatial light modulator (6) and imageing sensor (8) are connected with described computer (9), and, described spatial light modulator (6) is amplitude type transmissive spatial photomodulator, grating angle therein is adjustable, and the Object light wave beam sizes of optical fiber collimator (4) outgoing is more than the region to be measured of testing sample (5)。
2. the automatic super-resolution digital hologram imaging device of multidimensional as claimed in claim 1, it is characterised in that: described laser instrument (1) adopts centre wavelength to be the solid state laser of 532nm, and power is 300mW。
3. the automatic super-resolution digital hologram imaging device of multidimensional as claimed in claim 1, it is characterized in that: described spatial light modulator (6) adopts resolution to be 1920 × 1080 pixels, and Pixel size is the amplitude type transmissive spatial photomodulator of 8.5 μ m 8.5 μm。
4. the automatic super-resolution digital hologram imaging device of multidimensional as claimed in claim 1, it is characterised in that: described imageing sensor (8) adopts CCD to be 4016 × 2672 pixels, and pixel dimension is the CCD camera of 9 μ m 9 μm。
5. adopt the automatic super-resolution digital hologram imaging device of multidimensional as claimed in claim 1 to obtain super-resolution digital hologram formation method, it is characterised in that to comprise the steps:
(1) several super-resolution digital holograms are recorded: utilize computer (9) modulation spatial light modulator (6), the direction of the grating in spatial light modulator (6) is adjusted from 0 ° to 180 °, regulating 0.5 °, computer (9) controls imageing sensor (8) record 360 width digital holograms continuously every time；
(2) Reconstructed image is obtained: be stored in computer by the 360 width digital holograms obtained, it is programmed by Matlab software, respectively 360 width digital holograms being carried out Fourier transformation, obtain reproduction image, every width reproduction image has 6 sub-reproduction image separated；
(3) super-resolution Reconstructed image is obtained: utilize the frequency domain registration method with sub-pixel precision that six sub-reproduction image in each width reproduction image are accurately positioned, wavelet transformation is adopted to extract the different frequency information of the sub-reproduction image in 360 width reproduction image, it is weighted the different frequency information obtained merging, it is thus achieved that the reproduction image of multidimensional super-resolution。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108178.8A CN103941568B (en) | 2014-03-21 | 2014-03-21 | The automatic super-resolution digital hologram imaging device of multidimensional and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108178.8A CN103941568B (en) | 2014-03-21 | 2014-03-21 | The automatic super-resolution digital hologram imaging device of multidimensional and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103941568A CN103941568A (en) | 2014-07-23 |
| CN103941568B true CN103941568B (en) | 2016-06-22 |
Family
ID=51189293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108178.8A Active CN103941568B (en) | 2014-03-21 | 2014-03-21 | The automatic super-resolution digital hologram imaging device of multidimensional and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103941568B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898217B (en) * | 2016-04-14 | 2019-08-06 | 京东方科技集团股份有限公司 | Holography operation equipment and control equipment, holographic operating method and control method |
| CN105739281B (en) | 2016-04-14 | 2018-12-21 | 京东方科技集团股份有限公司 | Image display system and image display method |
| CN108519728A (en) * | 2018-02-12 | 2018-09-11 | 北京工业大学 | A kind of high resolution ratio digital holographic Diffraction tomography |
| CN109709786B (en) * | 2019-02-25 | 2020-08-25 | 中国科学院光电技术研究所 | Super-resolution digital holographic imaging system and imaging method |
| CN110020988B (en) * | 2019-04-04 | 2020-08-18 | 山东大学 | Super-resolution reconstruction system and reconstruction method based on micro-nano motion platform |
| CN112288633B (en) * | 2020-10-29 | 2022-07-29 | 燕山大学 | Novel sub-pixel resolution diffraction imaging method |
| CN112596362B (en) * | 2020-12-18 | 2022-07-26 | 昆明理工大学 | Digital holographic device and imaging method for full-field super-resolution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350212A (en) * | 2001-11-07 | 2002-05-22 | 苏州苏大维格数码光学有限公司 | Digital 3D optical variable image making process and laser photocomposition system |
| CN202421745U (en) * | 2011-09-29 | 2012-09-05 | 北京工业大学 | Optical fiber digital holographic speckle removing imaging system |
| CN103092049A (en) * | 2013-01-16 | 2013-05-08 | 北京工业大学 | All-solid digital holography imaging system capable of reducing speckle noise |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4650409B2 (en) * | 2006-12-22 | 2011-03-16 | 富士ゼロックス株式会社 | Hologram recording method, hologram recording apparatus, hologram reproducing method, hologram reproducing apparatus, and optical recording medium |
| US9164479B2 (en) * | 2011-09-16 | 2015-10-20 | University Of Massachusetts | Systems and methods of dual-plane digital holographic microscopy |
-
2014
- 2014-03-21 CN CN201410108178.8A patent/CN103941568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350212A (en) * | 2001-11-07 | 2002-05-22 | 苏州苏大维格数码光学有限公司 | Digital 3D optical variable image making process and laser photocomposition system |
| CN202421745U (en) * | 2011-09-29 | 2012-09-05 | 北京工业大学 | Optical fiber digital holographic speckle removing imaging system |
| CN103092049A (en) * | 2013-01-16 | 2013-05-08 | 北京工业大学 | All-solid digital holography imaging system capable of reducing speckle noise |
Non-Patent Citations (1)
| Title |
|---|
| 数字全息技术在生物医学成像和分析中的应用;王云新，王大勇等;《中国激光》;20140228;第41卷(第2期);第1-13页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103941568A (en) | 2014-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103941568B (en) | The automatic super-resolution digital hologram imaging device of multidimensional and method | |
| CN103257441B (en) | A kind of dynamic micro imaging system of incoherent digital holography three-dimensional and method | |
| Mandracchia et al. | Holographic microscope slide in a spatio-temporal imaging modality for reliable 3D cell counting | |
| CN102914367B (en) | Multispectral imaging device and multispectral imaging method based on compressed sensing | |
| Huang et al. | Holographic image reconstruction with phase recovery and autofocusing using recurrent neural networks | |
| KR102083875B1 (en) | Apparatus and method for measuring quality of holographic image | |
| US20160139388A1 (en) | Methods and systems for transport-of-intensity imaging | |
| DE112009001652T5 (en) | Multichannel recording | |
| CN101765755A (en) | Three-dimensional shape measuring device, three-dimensional shape measuring method, three-dimensional shape measuring program, and recording medium | |
| JP6228965B2 (en) | Three-dimensional refractive index measuring method and three-dimensional refractive index measuring apparatus | |
| JP2020529602A (en) | Coded aperture spectrum image analyzer | |
| CN103823353A (en) | Sub-wavelength super-resolution digital holographic imaging system based on microspheres | |
| CN114264370B (en) | Compressed sensing computed tomography spectrometer system and imaging method | |
| WO2016062296A1 (en) | Interferometric system and method of measurement of refractive index spatial distribution | |
| CN109799672A (en) | The non-detection device and method for improving imaging lens | |
| KR101784336B1 (en) | Method and Apparatus for Measuring 3D Refractive Index Tomograms Using a High-Speed Wavefront Shaper | |
| WO2021127726A1 (en) | Apparatus, system and method of digital imaging | |
| CN1800803B (en) | Examination method and examination apparatus for optical component | |
| KR101404183B1 (en) | Device and method for generating hologram | |
| KR20170078580A (en) | Fyperspectral camera based on Fourier transform | |
| CN103558160A (en) | Method and system for improving resolution ratio of spectral imaging space | |
| Yang et al. | Measurement of a microchamber flow by using a hybrid multiplexing holographic velocimetry | |
| CN109883656A (en) | The non-detection device and method for improving imaging lens | |
| WO2016010670A1 (en) | Method and apparatus for measuring optical systems and surfaces with optical ray metrology | |
| KR100715033B1 (en) | Content-based fused off-axis illumination direct-to-digital holography |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |