CN103126710A - High time resolution three-dimensional imaging method based on framing camera - Google Patents
High time resolution three-dimensional imaging method based on framing camera Download PDFInfo
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- CN103126710A CN103126710A CN2012105794037A CN201210579403A CN103126710A CN 103126710 A CN103126710 A CN 103126710A CN 2012105794037 A CN2012105794037 A CN 2012105794037A CN 201210579403 A CN201210579403 A CN 201210579403A CN 103126710 A CN103126710 A CN 103126710A
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Abstract
The invention relates to a high time resolution three-dimensional imaging method based on a framing camera. The high time resolution three-dimensional imaging method based on the framing camera includes the following steps: 1), obtaining a two-dimensional image of an object to be tested by utilization of the framing camera; and 2), performing three-dimensional reconstruction on the obtained two-dimensional image of the object to be tested to obtain the three-dimensional visual effect object to be tested. The high time resolution three-dimensional imaging method based on the framing camera is capable of obtaining the three-dimensional image with picosecond (10-12 S) time resolution, and providing a reliable basis for direct improving on laser beam forms in a test process.
Description
Technical field
The invention belongs to inertial confinement fusion diagnostic techniques field, relate to a kind of three-D imaging method, relate in particular to a kind of high time resolution three-D imaging method based on framing camera.
Background technology
X ray microchannel plate travelling wave gating framing camera is a kind of two dimensional image deriving means, be used for the ultrafast phenomenon diagnosis in X ray and ultraviolet spectral range, its range of application has contained the Overseas New subjects such as nuclear physics, Biomedical Photonics, plasma physics, high field physics.At present, in inertial confinement fusion experiment, obtain by framing camera the plasma pinch radioscopic image that several have Picosecond, but be the imaging system of two dimension, only can obtain fusion two-dimensional imaging image, can't be intuitively determine in real time laser irradiation inhomogeneous position, the experimenter can not the on-line control experimental provision and obtain better experimental result.
The Computerized chromatographic technology has obtained to use widely at aspects such as medical science, industrial tomographies as a kind of diagnostic tool.But owing to being subjected to the condition restriction such as environment, do not apply to the ultrafast phenomenon diagnosis process.
At present, the country of research inertial confinement fusion has all obtained the diagnostic result of two-dimentional picosecond frame image, but does not all obtain the 3-D view result.
Summary of the invention
In order to solve the above-mentioned technical problem that exists in background technology, the invention provides and a kind ofly can obtain psec (10
-12S) time-resolved tri-dimensional picture and the form that can directly improve laser beam in for experimentation provide the high time resolution three-D imaging method based on framing camera of reliable basis.
Technical solution of the present invention is: the invention provides a kind of high time resolution three-D imaging method based on framing camera, its special character is: said method comprising the steps of:
1) utilize framing camera to obtain the two dimensional image of target to be measured;
The two dimensional image of the target to be measured that 2) step 1) is acquired carries out three-dimensional reconstruction, obtains having the target to be measured of 3D vision effect.
Above-mentioned steps 1) specific implementation is:
1.1) accurately design the position of pinhole imaging system optical system, make target to be measured be projected in respectively the little of framing camera and be with;
1.2) for a cover framing camera recording system, be engraved in little minute other strobe position of being with during same gating, arrive target to be measured at the two dimensional image of different angles by the pinhole imaging system system acquisition;
1.3) along with electric pulse little with on transmission, every framing camera can obtain not two-dimensional images in the same time;
1.4) calculate respectively the strength factor of the X ray of each pixel of imaging plane according to the corresponding relation of ray emission characteristic and target internal state of matter to be measured from the information data of two-dimensional images;
1.5) according to step 1.4) strength factor of the X ray of resulting each pixel of imaging plane sets up the two-dimentional intensity matrix of target image synchronization different angles to be measured;
1.6) repeating step 1.1) to step 1.5), set up many framing cameras and obtain not the two-dimensional images of different directions in the same time, and set up each two-dimentional intensity matrix of different angles constantly.
Above-mentioned steps 1) be to utilize X ray microchannel plate travelling wave gating framing camera to obtain the two dimensional image of target to be measured.
Above-mentioned framing camera be according to etc. the orientation mode of arranging obtain the two dimension view of target to be measured.
Above-mentioned framing camera etc. the orientation mode of arranging be square, positive tetrahedron or regular hexahedron.
Above-mentioned steps 2) specific implementation is:
2.1) two dimensional image of target to be measured that step 1) is acquired carries out the calculating of three-dimensional data;
2.2) according to step 2.1) three-dimensional data that calculates rebuilds, and obtains having the target to be measured of 3D vision effect.
Above-mentioned 2.1) account form is that the mode that the two dimensional image of target to be measured that step 1) is acquired carries out image registration and three-dimensional difference is carried out the calculating of three-dimensional data.
Advantage of the present invention is:
The invention discloses a kind of image acquiring method for research motion of matter ultrafast process, the method is mainly used in the ultrafast diagnosis direction of inertial confinement fusion experiment, mainly combined by X ray travelling wave gating framing imaging technique and three-dimensional reconstruction, finally obtain three-dimensional real time imaging information.at first many framing cameras are pressed square, arrange in the orientation such as positive tetrahedron or regular hexahedron, system is divided into several to the X ray target image information by pin-hole imaging, recycle many X ray microchannel plate travelling wave gating framing cameras and convert radioscopic image information to visible light information, obtain the two dimensional image of high time resolution, obtain not in the same time image by the precision synchronous electric control system, by particular algorithm, the two-dimensional image information that obtains is carried out three-dimensional reconstruction at last, thereby acquisition has the Three-Dimensional Dynamic image of the target pellet fusion process of high time resolution.Enforcement of the present invention makes the two-dimension picture that originally obtained be increased to three-dimensional.The present invention a kind ofly can obtain psec (10
-12S) diagnostic techniques of time-resolved tri-dimensional picture, can be in the inertial confinement fusion process the direct result of the position information such as observation laser emission unsymmetry and pellet processing inhomogeneities, the form that can directly improve laser beam in for experimentation provides reliable basis, and can save great many of experiments time and funds.
Description of drawings
Fig. 1 is the specific implementation principle schematic of three-D imaging method provided by the present invention;
Fig. 2 is tetragon camera disposing way schematic diagram of the present invention;
Fig. 3 is positive tetrahedron disposing way schematic diagram of the present invention;
Fig. 4 is regular hexahedron disposing way schematic diagram of the present invention.
The specific embodiment
The present invention uses many framing cameras and Computer Three-dimensional reproduction technology to combine, and obtains three-dimensional image.
Referring to Fig. 1, the present invention is integrate innovations method.Obtain the two dimensional image of Picosecond by X ray microchannel plate travelling wave gating framing camera, combine with three-dimensional rebuilding method, obtain the 3-D view of Picosecond.Purpose is in ultrafast fusion process, for diagnosis implosion pellet temporal-spatial evolution process, implosion symmetry and hydrodynamie stability etc. provide a kind of technology with Picosecond rate, three-dimensional image of obtaining.
Concrete technical scheme mainly was divided into for two steps: two-dimensional signal is obtained and Studies About Reconstruction of Three-Dimension Information.
Two-dimensional signal is obtained:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, utilize X ray microchannel plate travelling wave gating framing camera to obtain the two dimensional image of target to be measured.At first accurately design the position of pinhole imaging system optical system, make target respectively projection imaging on little being with of framing camera, under the accurate control of synchronous gate, for a cover framing camera recording system, be engraved in 4 little minute other strobe position of being with during same gating, by the 4 width two dimensional images of pinhole imaging system system acquisition to target (implosion pellet) different angles.Along with electric pulse little with on transmission, camera can obtain 4 not in the same time two-dimensional images, each has 4 width images constantly.Corresponding relation according to ray emission characteristic and pellet inner material state, calculate the strength factor of the X ray of each pixel of imaging plane respectively from 4 width image information datas, thereby set up the two-dimentional intensity matrix of implosion pellet image synchronization different angles.More the picture number that many cameras obtain will overlap framing camera respectively by the disposing way of positive tetrahedron, positive tetrahedron and regular hexahedron, thereby obtain two-dimensional images by that analogy.
Studies About Reconstruction of Three-Dimension Information:
Three-dimensional reconstruction is improvement projective transformation equation, makes it be applicable to the image transformation of pinhole array sampling.Namely adopt the iterative reconstruction that carries out sparse projection based on the non-complete data that obtains to study.Grenz ray pin-hole imaging technology, its projection pattern is different from Computerized chromatographic (CT) technology, must improve the image transformation of just taking a sample applicable to pinhole array to the projective transformation equation.Employing is studied based on the iterative reconstruction that the non-complete data that obtains carries out sparse projection.By the shooting process analyses such as projection wire harness that pin hole sampling theorem, pin hole are taken a sample, the information that detector records is that the various combination of acquisition can't be separated into independently individual or local along with the locus of each camera shooting is different.The bin that therefore can not be simplified to as the method for CT several separation is independently found the solution, and should as a whole, once find the solution.So for pinhole imaging system, the information that detects by each effective sensitization unit on test surface is the stack of the light intensity of all luminous points on this light, sets up matrix, and definite matrix coefficient, the problem reduction of three-dimensional reconstruction is become the problem of an equation solution.For several slice information that get, set up threedimensional model, carry out the calculating of three-dimensional data and reconstruct according to this implosion pellet target with 3D vision effect by methods such as image registration, three-dimensional differences.And along with electric pulse little with on transmission, gating is in the same time the two dimensional image of explosion pellet not, the change of the image parameter of obtaining, the information such as form of the three-dimensional implosion pellet of reconstruction also change thereupon, therefore preferably the Real Time Observation pellet in the not variation under in the same time.And these information will provide sound assurance for three-dimensional implosion pellet temporal-spatial evolution, the symmetric analysis of implosion with variation.
In the inertial confinement fusion test, detectable window number is less, and observed azimuth is limited, and pellet is small-sized and time course is short, can not pinhole camera be done the rotation sweep motion in the target practice process.Can only fix the probe (detector) in a plurality of orientation measures when physical process occurs simultaneously.Because consider cost factor, can only pop one's head in a few; Zone that in addition may be to be measured in physical study is very little, makes observed bearing limited, and this also makes can only be in test with a small amount of probe.Therefore mounting means is: four or six framing cameras are installed, utilize spininess hole optical system to its imaging, along with electric pulse negative electrode little with on transmission and gating, not in the same time the two dimensional image that obtains, the information such as form of the three-dimensional implosion pellet of rebuilding obtain different gatings several real time 3-D images constantly also with the gating time changing.
Claims (7)
1. high time resolution three-D imaging method based on framing camera is characterized in that: said method comprising the steps of:
1) utilize framing camera to obtain the two dimensional image of target to be measured;
The two dimensional image of the target to be measured that 2) step 1) is acquired carries out three-dimensional reconstruction, obtains having the target to be measured of 3D vision effect.
2. the high time resolution three-D imaging method based on framing camera according to claim 1, it is characterized in that: the specific implementation of described step 1) is:
1.1) accurately design the position of pinhole imaging system optical system, make target to be measured be projected in respectively the little of framing camera and be with;
1.2) for a cover framing camera recording system, be engraved in little minute other strobe position of being with during same gating, arrive target to be measured at the two dimensional image of different angles by the pinhole imaging system system acquisition;
1.3) along with electric pulse little with on transmission, every framing camera can obtain not two-dimensional images in the same time;
1.4) calculate respectively the strength factor of the X ray of each pixel of imaging plane according to the corresponding relation of ray emission characteristic and target internal state of matter to be measured from the information data of two-dimensional images;
1.5) according to step 1.4) strength factor of the X ray of resulting each pixel of imaging plane sets up the two-dimentional intensity matrix of target image synchronization different angles to be measured;
1.6) repeating step 1.1) to step 1.5), set up many framing cameras and obtain not the two-dimensional images of different directions in the same time, and set up each two-dimentional intensity matrix of different angles constantly.
3. the high time resolution three-D imaging method based on framing camera according to claim 1 and 2, it is characterized in that: described step 1) is to utilize X ray microchannel plate travelling wave gating framing camera to obtain the two dimensional image of target to be measured.
4. the high time resolution three-D imaging method based on framing camera according to claim 3 is characterized in that: described framing camera be according to etc. the orientation mode of arranging obtain the two dimension view of target to be measured.
5. the high time resolution three-D imaging method based on framing camera according to claim 4 is characterized in that: described framing camera etc. the orientation mode of arranging be square, positive tetrahedron or regular hexahedron.
6. the high time resolution three-D imaging method based on framing camera according to claim 5, it is characterized in that: specific implementation described step 2) is:
2.1) two dimensional image of target to be measured that step 1) is acquired carries out the calculating of three-dimensional data;
2.2) according to step 2.1) three-dimensional data that calculates rebuilds, and obtains having the target to be measured of 3D vision effect.
7. the high time resolution three-D imaging method based on framing camera according to claim 6 is characterized in that: account form described 2.1) is that the mode that the two dimensional image of target to be measured that step 1) is acquired carries out image registration and three-dimensional difference is carried out the calculating of three-dimensional data.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085220A (en) * | 2017-06-21 | 2017-08-22 | 中国工程物理研究院流体物理研究所 | A kind of full light framing 3D hologram imaging device of trillion amplitude-frequencies and method |
| CN108663894A (en) * | 2018-05-16 | 2018-10-16 | 中国工程物理研究院上海激光等离子体研究所 | Framing camera diagnostic system on II laser aid of God Light and its adjusting method |
| CN112927829A (en) * | 2019-12-05 | 2021-06-08 | 核工业西南物理研究院 | Method for monitoring high-energy optical radiation of fusion device in real time |
| CN113112494A (en) * | 2021-04-29 | 2021-07-13 | 同济大学 | Three-dimensional collaborative diagnosis device for image with ICF hot spot spatial morphology evolving along with time |
| CN113218530A (en) * | 2021-04-29 | 2021-08-06 | 同济大学 | Diagnostic equipment for obtaining three-dimensional space distribution of ICF hot spot electron temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017829A (en) * | 1987-09-01 | 1991-05-21 | Hamamatsu Photonics Kabushiki Kaisha | Framing camera |
| CN2773749Y (en) * | 2005-07-26 | 2006-04-19 | 中国科学院西安光学精密机械研究所 | Travelling gated framing camera of x-ray micro-channel panel |
| CN102679961A (en) * | 2012-05-23 | 2012-09-19 | 武汉大学 | Portable four-camera three-dimensional photographic measurement system and method |
-
2012
- 2012-12-27 CN CN2012105794037A patent/CN103126710A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017829A (en) * | 1987-09-01 | 1991-05-21 | Hamamatsu Photonics Kabushiki Kaisha | Framing camera |
| CN2773749Y (en) * | 2005-07-26 | 2006-04-19 | 中国科学院西安光学精密机械研究所 | Travelling gated framing camera of x-ray micro-channel panel |
| CN102679961A (en) * | 2012-05-23 | 2012-09-19 | 武汉大学 | Portable four-camera three-dimensional photographic measurement system and method |
Non-Patent Citations (2)
| Title |
|---|
| 常增虎: "微通道板选通X射线皮秒分幅相机", 《光子学报》 * |
| 贾云得，等: "微型实时多目立体视觉机设计与实现", 《电子学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085220A (en) * | 2017-06-21 | 2017-08-22 | 中国工程物理研究院流体物理研究所 | A kind of full light framing 3D hologram imaging device of trillion amplitude-frequencies and method |
| CN107085220B (en) * | 2017-06-21 | 2023-09-22 | 中国工程物理研究院流体物理研究所 | Trillion amplitude frequency full-light framing three-dimensional holographic imaging device and method |
| CN108663894A (en) * | 2018-05-16 | 2018-10-16 | 中国工程物理研究院上海激光等离子体研究所 | Framing camera diagnostic system on II laser aid of God Light and its adjusting method |
| CN112927829A (en) * | 2019-12-05 | 2021-06-08 | 核工业西南物理研究院 | Method for monitoring high-energy optical radiation of fusion device in real time |
| CN113112494A (en) * | 2021-04-29 | 2021-07-13 | 同济大学 | Three-dimensional collaborative diagnosis device for image with ICF hot spot spatial morphology evolving along with time |
| CN113218530A (en) * | 2021-04-29 | 2021-08-06 | 同济大学 | Diagnostic equipment for obtaining three-dimensional space distribution of ICF hot spot electron temperature |
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Application publication date: 20130605 |