CN106124413B - A kind of device of the raising THz wave compressed sensing image quality based on double image element - Google Patents
A kind of device of the raising THz wave compressed sensing image quality based on double image element Download PDFInfo
- Publication number
- CN106124413B CN106124413B CN201610567286.0A CN201610567286A CN106124413B CN 106124413 B CN106124413 B CN 106124413B CN 201610567286 A CN201610567286 A CN 201610567286A CN 106124413 B CN106124413 B CN 106124413B
- Authority
- CN
- China
- Prior art keywords
- terahertz
- wave detector
- mask plate
- terahertz wave
- array
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1765—Method using an image detector and processing of image signal
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of devices of the raising THz wave compressed sensing image quality based on double image element, including：Realize that the mask plate of transmission and reflection, the first, second terahertz wave detector model are identical simultaneously；The THz wave for carrying imaging object information is modulated by mask plate, and mask plate is placed in parallel in the optical path with imaging object；First, second terahertz wave detector receives the terahertz emission for transmiting and reflecting by mask plate respectively；The radiation intensity array that first, second terahertz wave detector receives is corresponded into the processing of phase adduction, the transmission after being normalized and reflected radiation array respectively；Intensity in transmission array after normalization is corresponding with reflected intensity array to subtract each other and handles, the test data of be inhibited output pulsation and external interference；Test data input compressed sensing recovery routine can be obtained reconstructed image.The sample phase that the present invention is imaged in Terahertz compressed sensing, which just utmostly reduces external condition, to be influenced, and image quality is improved.
Description
Technical field
The present invention relates to THz wave field of detecting more particularly to a kind of raising THz wave based on double image element to compress sense
Know the device of image quality.
Background technology
Terahertz (Terahertz, abbreviation THz, 1THz=1012Hz) radiation refers to frequency from 0.1THz to 10THz, accordingly
Wavelength from 3 millimeters to 30 micron, the comparatively wide electromagnetic spectrum region of spectral range between millimeter wave and infrared light.Terahertz
It hereby radiates in electromagnetic spectrum residing specific position and imparts a series of its special property, this so that Terahertz Technology can be with
It is applied to the directions such as biomedical detection, substance characteristics research, safety check.THz wave the relevant technologies achieved for 20 years in the past
Very fast development, wherein THz wave imaging are even more to achieve a series of achievements as one of its research hotspot.With THz wave
Speed, sensitivity and the spatial resolution of the continuous maturation of imaging technique, point by point scanning formula and array imaging are gradually promoted.So
And the problem relatively low with array image sensitivity is not still solved preferably point by point scanning formula image taking speed slowly, terahertz
Hereby imaging field is to quickly and with highly sensitive imaging method having urgent demand.
Compressed sensing is that a kind of completely new signal acquisition making full use of signal sparsity or compressibility, encoding and decoding are theoretical,
It can be in sample rate much smaller than the sampling for realizing signal under Shannon-nyquist sampling theorem.2006, Rice Univ USA ground
Imaging model machine of the first item based on compressed sensing has been made, " single pixel camera " is referred to as, it only utilizes a detector energy
Enough realize the acquisition of two dimensional image signal.Based on compressed sensing THz wave imaging be it is a kind of can be before ensureing sensitivity
Putting effectively reduces sample rate, improves the novel THz imaging technology of image taking speed.Common compressed sensing imaging process is
Imaging object is covered after THz wave is homogenized, and carries object information through the THz wave of imaging object, then Terahertz
Radiation is modulated by the mask matrix on mask plate, and detector receives modulated intensity or phase information.
The accurate global information of imaging object in order to obtain needs terahertz emission uniformly to cover imaging object, still
The general Gaussian distributed of terahertz emission.The homogenization device of terahertz wave band is deficient, although radiation profiles can be led to by expanding
It is relatively uniform, but still can not preferably meet the requirement of radiation homogenization.If be imaged with terahertz emission unevenly distributed,
This is equivalent to and is added to a radiation profiles matrix on imaging object, and Gaussian Profile be not easy it is sparse, so imaging knot
Fruit will not be simple imaging object to be superimposed with radiation profiles, but will appear the error even mistake of reconstruction.
In addition, it still needs further improvement for the stability in terahertz emission source at this stage, it is difficult to meet and measure for a long time
Requirement, and the fluctuation in terahertz emission source and Terahertz heat-sensitive eye be affected by the external environment generation temperature drift
It moves, imaging results can be caused to generate the possibility sharp increase of error or directly generate large error.
Currently, by improving recovery algorithms from incompleteness or being recovered the side of original signal in the sampled signal of noise pollution
Method, also achieves certain effect, however the approach can only interfere it is small to preferably being restored with certain probability under certain condition
Go out signal.So being badly in need of a kind of can to eliminate or reduce the side of noise and other influences in the signal sampling stage at this stage
Method.
Invention content
The present invention provides a kind of device of the raising THz wave compressed sensing image quality based on double image element, the present invention
The deficiency for overcoming the existing method of sampling just utmostly reduces extraneous item in the sample phase of THz wave compressed sensing imaging
Part influences, and improves image quality, described below：
A kind of device of the raising THz wave compressed sensing image quality based on double image element, described device include：Terahertz
Hereby wave condenser lens, described device further include：
Mask plate, the first terahertz wave detector and the second terahertz wave detector of transmission and reflection are realized simultaneously,
The model of first terahertz wave detector and second terahertz wave detector is identical, the Terahertz
Wave condenser lens is arranged between the mask plate and first terahertz wave detector；
The THz wave of imaging object information is carried by the mask plate and is modulated by the mask plate, it is described to cover
Template is placed in parallel in the optical path with imaging object；
First terahertz wave detector and second terahertz wave detector are received respectively by the mask
Plate transmits and the terahertz emission of reflection；
Radiation intensity array that first terahertz wave detector is received is visited with second THz wave respectively
It surveys the radiation intensity array that device receives and corresponds to the processing of phase adduction, the transmission after being normalized and reflected radiation array；
Intensity in transmission array after normalization is corresponding with reflected intensity array to subtract each other and handles, be inhibited output pulsation with
The test data of external interference；
Test data input compressed sensing recovery routine be can be obtained into reconstructed image.
The advantageous effect of technical solution provided by the invention is：
1, two-way detector transmits and the terahertz emission of reflection after receiving modulation respectively, compared to single channel detector, etc.
It is same as improving modulation depth, Signal-to-Noise can be improved, improve the quality for restoring image；
2, it is carried out at the same time the acquisition of transmission and reflected radiation using two same model detectors, radiation can be effectively reduced
Influence of the fluctuation in source to imaging data improves the accuracy that image restores；
3, radiation intensity that transmission receives is subtracted each other with the radiation intensity that reflection detects, can be reduced between adjacent pixel
The influence of the uneven and other external disturbance (such as temperature, vibration) of radiation profiles, improves the quality for restoring image.
4, the present invention acquires the transmission and reflected radiation in the imaging of THz wave compressed sensing using two-way detector simultaneously,
Have the advantages that device is simple, data processing is simple, noise suppression effect is good.
Description of the drawings
Fig. 1 is the structural schematic diagram of the device of the raising THz wave compressed sensing image quality based on double image element；
(a) of Fig. 2 is imaging object figure, (b and c) is contrast effect figure.
In attached drawing, what each component indicated is listed as follows：
1：It can be realized simultaneously the mask plate of transmission and reflection； 2：THz wave condenser lens；
3：First terahertz wave detector； 4：Second terahertz wave detector.
Wherein, the first terahertz wave detector 3, the model of the second terahertz wave detector 4 are identical.
The acceptance of the bid part B of mask plate 1 indicates that THz wave can penetrate, and the radiation of transmission is converged by THz wave condenser lens 2
Gather the first terahertz wave detector 4；
The acceptance of the bid part A of mask plate 1 indicates (polishing or surface gold-plating are handled) anti-to Terahertz wave height, the Terahertz spoke of reflection
It penetrates and is received by the second terahertz wave detector 4.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention is made below further
It is described in detail on ground.
Embodiment 1
Referring to Fig. 1, a kind of device of the raising THz wave compressed sensing image quality based on double image element, including：It can be with
Mask plate 1, THz wave condenser lens 2, the first terahertz wave detector 3 and the second terahertz of transmission and reflection are realized simultaneously
Hereby wave detector 4.
Wherein, the model of the first terahertz wave detector 3 and the second terahertz wave detector 4 is identical, and THz wave is poly-
Focus lens 2 are arranged between mask plate 1 and the first terahertz wave detector 3.
When specific implementation, THz source generates THz wave output, THz wave incident imaging object at an angle
1, the THz wave of imaging object information is carried by mask plate 1 and is masked the modulation of plate 1, and mask plate 1 exists with imaging object
It is placed in parallel in light path.
First terahertz wave detector 3 and the second terahertz wave detector 4 are received respectively by the transmission of mask plate 1 and anti-
It is strong to be distinguished collected radiation by the terahertz emission penetrated for first terahertz wave detector 3 and the second terahertz wave detector 4
Degree summation, normalizes it fluctuation influence on RT that can eliminate radiation source.
The radiation intensity correspondence that first terahertz wave detector 3 and the second terahertz wave detector 4 receive is subtracted each other,
Can reduce radiation intensity distribution it is uneven caused by influence, while can largely Removing Random No and ambient noise.
Wherein, mask plate 1 can realize the transmission and reflection of THz wave simultaneously.The part of hollow out can on metal mask plate 1
To realize the transmission of THz wave, non-hollow-out part is polished or gold-plated processing, increases the reflectivity to THz wave.Total
The radiation intensity of transmission and reflection substantially approaches 1:1.
Radiation intensity array that first terahertz wave detector 3 of final transmission end is received, respectively with reflection end
The radiation intensity array correspondence that two terahertz wave detectors 4 receive is added one by one, and the array being added is different time
Through the radiation overall strength of imaging object, in the case where output is without fluctuation, each element all should be equal in the array.It is existing
Its element, which is all multiplied a coefficient, makes it be equal to get to normalized overall strength, transmission after then being normalized and
Reflected radiation array is to get to eliminating the measurement data after radiation source output pulsation.
Intensity in transmission array after normalization is corresponding with reflected intensity array to subtract each other, you can reduce radiation profiles it is uneven and
The influence of outside noise.Then it will make the array that difference obtains and input recovery algorithms, you can the output pulsation that is inhibited is dry with the external world
The recovery image disturbed.
Wherein, intensity in transmission array mentioned above addition corresponding with reflected intensity array, intensity in transmission array and reflection
Intensity array correspondence is subtracted each other, normalized step and recovery algorithms are known to one of skill in the art, and the present invention is implemented
Example does not make any improvement to the part for being related to software, has only directly used those softwares.
In conclusion the dress of the raising Terahertz compressed sensing image quality provided in an embodiment of the present invention based on double image element
It sets, influence of the external environment to Terahertz compressed sensing imaging results can be reduced in sample phase, effectively improve image quality.
Embodiment 2
With reference to Fig. 1, scheme, the operation principle in embodiment 1 are further introduced, it is described below：
The embodiment of the present invention is designed to provide a kind of fluctuation and noise reducing radiation source in data acquisition phase
To the device of THz wave compressed sensing Imaging.
THz source generates THz wave output, and THz wave carries imaging object information after imaging object
THz wave is by mask plate 1 (can be realized simultaneously transmission and reflection) and is masked the modulation of plate 1, and mask plate 1 is with certain angle
Degree (30 °~75 °) is placed on THz wave path, and the specific angle of inclination of mask plate 1 is determined by the size of imaging object, and
Mask plate 1 is placed in parallel in the optical path with imaging object.
The first terahertz wave detector 3, the second terahertz wave detector 4 of two same models receive respectively passes through mask
The terahertz emission intensity of the transmission of plate 1 (passing through THz wave condenser lens 2) and reflection, replaces mask matrix, obtains different
It modulates and receives corresponding terahertz emission intensity.
Wherein, the theoretical model (known to one of skill in the art) of compressed sensing imaging is：Y=AX, A are mask square
Battle array, X is imaging object, and the unstability of radiation source shows as U, noise N.The measured value Y ' obtained during actual experiment=
UAX+N.Influence of the unstability of radiation source to measurement is of overall importance, is equivalent to before mask matrix A and has multiplied a coefficient.
The noise that external environment generates, which acts directly on detector, only allows the output intensity of detector to produce fluctuation.If ignoring this
The influence of a little factors, directly by A-1Y ' goes to restore X, it is clear that obtain is inaccurate X.
Distinguish the terahertz emission of acquisition of transmission and reflection according to two same model detectors, transmission end first too
The radiation Y that hertz wave detector 3 collects1=U1AX+N1, the radiation that the second terahertz wave detector of reflection end 4 detects is
Y2=U2AX+N2, N1And N2For noise jamming.
In mask matrix transmissive part (B) and can not transmissive portion (A) and must be matrix size, so transmission
The radiation intensity that first terahertz wave detector 3 at end detects and the spoke that the second terahertz wave detector of reflection end 4 detects
The summation for penetrating intensity is the radiation amount through imaging object.
If the radiation intensity of radiation source output stabilization, transmission end and reflection end and always a definite value.Array Y1And Y2It asks
With obtain (Y1+Y2), normalization coefficient α is sought, α (Y are made1+Y2) it is a steady state value, the fluctuation of radiation source is eliminated in this way
Influence to measurement data.
Because the model of the first terahertz wave detector 3, the second terahertz wave detector 4 is identical, and is in identical survey
It measures in environment, so the influence size that external interference generates it is equal, N1=N2.By the Y after normalization1And Y2It is poor to make,
Influence of the noise to measurement can be eliminated.
In conclusion the dress of the raising Terahertz compressed sensing image quality provided in an embodiment of the present invention based on double image element
It sets, overcomes the deficiency of existing sampling, just utmostly reduce external condition in the sample phase of Terahertz compressed sensing imaging
It influences, improves image quality.
Embodiment 3
Feasibility verification is carried out to the device in Examples 1 and 2 with reference to Fig. 2, it is described below：
This experimental simulation detector obtains all the way under noise situations recovery image, is mentioned with the embodiment of the present invention
The image that the terahertz emission of transmission and reflection restores is detected simultaneously, as shown in Figure 2.
Wherein, a of Fig. 2 is imaging object, specially 20 × 20 letter " H ".The b of Fig. 2 is shown to make an uproar in 2% random
Under sound, the image only then restored with the radiation of detector acquisition of transmission all the way, Y-PSNR (peak signal to
Noise ratio, PSNR) it is 5.95, image can not recognize.The c of Fig. 2 is shown under 2% random noise, is visited with two-way
Surveying device (the first terahertz wave detector 3, the second terahertz wave detector 4), respectively then the radiation of acquisition of transmission and reflection restores
The image gone out, PSNR 23.1.It can be seen that image overall contrast ratio is significantly increased, edge svelteness.First terahertz
The result that hereby wave detector 3, the second terahertz wave detector 4 obtain is not only the simple superposition of two restoration results, but
Noise is largely inhibited, remains the information of imaging object to the greatest extent.
By above-mentioned experiment, the feasibility of device in the embodiment of the present invention 1 and 2 can be directly verified, reality is met
A variety of needs in, improve image quality.
To the model of each device in addition to doing specified otherwise, the model of other devices is not limited the embodiment of the present invention,
As long as the device of above-mentioned function can be completed.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, the embodiments of the present invention
Serial number is for illustration only, can not represent the quality of embodiment.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of device of the raising THz wave compressed sensing image quality based on double image element, which is characterized in that described device
Including：THz wave condenser lens, which is characterized in that described device further includes：
Mask plate, the first terahertz wave detector and the second terahertz wave detector of transmission and reflection are realized simultaneously；
The model of first terahertz wave detector and second terahertz wave detector is identical, and the THz wave is poly-
Focus lens are arranged between the mask plate and first terahertz wave detector；
The THz wave of imaging object information is carried by the mask plate and is modulated by the mask plate, the mask plate
It is placed in parallel in the optical path with imaging object；
First terahertz wave detector and second terahertz wave detector receive saturating by the mask plate respectively
The terahertz emission penetrated and reflected；
Radiation intensity array that first terahertz wave detector is received, respectively with second terahertz wave detector
The radiation intensity array received corresponds to the processing of phase adduction, the transmission after being normalized and reflected radiation array；
Intensity in transmission array after normalization is corresponding with reflected intensity array to subtract each other and handles, be inhibited output pulsation with it is extraneous
The test data of interference；
Test data input compressed sensing recovery routine be can be obtained into reconstructed image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610567286.0A CN106124413B (en) | 2016-07-18 | 2016-07-18 | A kind of device of the raising THz wave compressed sensing image quality based on double image element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610567286.0A CN106124413B (en) | 2016-07-18 | 2016-07-18 | A kind of device of the raising THz wave compressed sensing image quality based on double image element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106124413A CN106124413A (en) | 2016-11-16 |
| CN106124413B true CN106124413B (en) | 2018-08-24 |
Family
ID=57288938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610567286.0A Active CN106124413B (en) | 2016-07-18 | 2016-07-18 | A kind of device of the raising THz wave compressed sensing image quality based on double image element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106124413B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840109A (en) * | 2017-01-20 | 2017-06-13 | 长沙全度影像科技有限公司 | A kind of single pixel imaging hardware system based on difference |
| CN107831144B (en) * | 2017-10-20 | 2020-02-21 | 上海理工大学 | Optical filter transmittance detection method based on compressed sensing time correlation imaging |
| FR3077641B1 (en) * | 2018-02-07 | 2020-02-21 | TiHive | TERAHERTZ REFLECTIVE IMAGING SYSTEM |
| CN108267418B (en) * | 2018-03-30 | 2023-12-05 | 北京农业信息技术研究中心 | Terahertz chromatography technology-based seed internal morphology acquisition method and device |
| CN110213467B (en) * | 2019-05-27 | 2020-10-23 | 中国科学院国家空间科学中心 | Multi-scale modulation compressed sensing imaging system and imaging method thereof |
| CN111510578B (en) * | 2020-03-31 | 2021-07-09 | 天津大学 | JPEG compressed image reconstruction method based on reinforcement learning |
| CN111579521B (en) * | 2020-05-06 | 2021-10-15 | 中国科学院沈阳自动化研究所 | Terahertz compression imaging optimization method and system based on data selection |
| CN111812672B (en) * | 2020-07-31 | 2023-02-10 | 广东工业大学 | Image reconstruction method and reflective terahertz ghost imaging system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072593A2 (en) * | 2003-02-12 | 2004-08-26 | Philip Morris Products, S.A. | System and method for terahertz imaging using a single terahertz detector |
| CN204255853U (en) * | 2014-12-03 | 2015-04-08 | 天津大学 | Quick THz continuous wave scanning imaging system |
| CN105044018A (en) * | 2015-07-10 | 2015-11-11 | 上海理工大学 | Multifunctional terahertz wave imaging system and imaging method |
| CN205317664U (en) * | 2015-12-31 | 2016-06-15 | 天津大学 | Detection device who lacks blood brain tissue based on reflective formation of image of terahertz wave |
| CN205352940U (en) * | 2015-12-31 | 2016-06-29 | 天津大学 | Detection device who lacks blood brain tissue based on formation of image of terahertz wave transmission -type |
| CN205844166U (en) * | 2016-07-18 | 2016-12-28 | 天津大学 | A kind of device improving THz wave compressed sensing image quality based on double image element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6734974B2 (en) * | 2001-01-25 | 2004-05-11 | Rensselaer Polytechnic Institute | Terahertz imaging with dynamic aperture |
-
2016
- 2016-07-18 CN CN201610567286.0A patent/CN106124413B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072593A2 (en) * | 2003-02-12 | 2004-08-26 | Philip Morris Products, S.A. | System and method for terahertz imaging using a single terahertz detector |
| CN204255853U (en) * | 2014-12-03 | 2015-04-08 | 天津大学 | Quick THz continuous wave scanning imaging system |
| CN105044018A (en) * | 2015-07-10 | 2015-11-11 | 上海理工大学 | Multifunctional terahertz wave imaging system and imaging method |
| CN205317664U (en) * | 2015-12-31 | 2016-06-15 | 天津大学 | Detection device who lacks blood brain tissue based on reflective formation of image of terahertz wave |
| CN205352940U (en) * | 2015-12-31 | 2016-06-29 | 天津大学 | Detection device who lacks blood brain tissue based on formation of image of terahertz wave transmission -type |
| CN205844166U (en) * | 2016-07-18 | 2016-12-28 | 天津大学 | A kind of device improving THz wave compressed sensing image quality based on double image element |
Non-Patent Citations (1)
| Title |
|---|
| Single pixel imaging with tunable terahertz parametric oscillator;PAN DUAN等;《Applied Optics》;20160429;第55卷(第13期);第3670-3675页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106124413A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106124413B (en) | A kind of device of the raising THz wave compressed sensing image quality based on double image element | |
| US11692900B2 (en) | Apparatuses and methods for anomalous gas concentration detection | |
| CN205844166U (en) | A kind of device improving THz wave compressed sensing image quality based on double image element | |
| US9658314B2 (en) | System and method for geo-locating and detecting source of electromagnetic emissions | |
| US6909095B2 (en) | System and method for terahertz imaging using a single terahertz detector | |
| US8527242B2 (en) | Methods and devices for analyzing material properties and detecting objects in scattering media | |
| US8633699B2 (en) | Techniques for determining physical properties of underground structures using lightning | |
| US8686362B2 (en) | Millimeter wave sensor for far-field standoff vibrometry | |
| CN108225541A (en) | The distributed fiberoptic sensor and foreign body intrusion signal for identifying foreign body intrusion perceive processing method | |
| US10876892B2 (en) | Measuring biological analytes using time-resolved spectroscopy | |
| US9645252B2 (en) | Method to extract photon depth-of interaction and arrival time within a positron emission tomography detector | |
| CN106053433B (en) | Laser-induced spectral analysis method and apparatus are perceived based on light modulation compression dimensionality reduction | |
| CN106814359B (en) | A kind of airfield runway foreign bodies detection radar signal preprocess method | |
| CN103954357B (en) | The acquisition methods of compressed spectrum imaging system calculation matrix | |
| US20230152131A1 (en) | Techniques and apparatus for improved spatial resolution for locating anomolies in optical fiber | |
| TW201418712A (en) | Method for detecting the motion of object by ultra-wideband radar imaging and system thereof | |
| US6657596B2 (en) | Method of measuring a pattern of electromagnetic radiation | |
| CN103438980B (en) | Method and device for liquid surface wave detection based on linear array CCD and linear infrared laser | |
| CN103471532A (en) | System and corresponding method for measuring surface waviness of aircraft | |
| He et al. | Non-line-of-sight imaging with radio signals | |
| Gennarelli et al. | Performance analysis of incoherent RF tomography using wireless sensor networks | |
| WO2017020402A1 (en) | Mail detection device and method | |
| CN203489968U (en) | Terahertz wave far field detection super diffraction resolution imager | |
| Stapp et al. | Simulation of a Fourier telescopy imaging system for objects in low earth orbit | |
| CN115900958A (en) | Geothermal region judgment system and method based on thermal infrared hyperspectral remote sensing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230510 Address after: 264000 Yingrui Industrial Park, Building 5, No. 66, Feilong Road, Laishan District, Yantai, Shandong Patentee after: Shandong Zhongjia Yingrui Medical Technology Co.,Ltd. Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |
|
| TR01 | Transfer of patent right |