CN103453850A - Method and system for measuring transparent liquid level micro-features based on digital speckle related technology - Google Patents
Method and system for measuring transparent liquid level micro-features based on digital speckle related technology Download PDFInfo
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Abstract
The invention discloses a method and system for measuring transparent liquid level micro-features based on the digital speckle related technology. The method comprises the step of placing a purpose-made speckle picture at the bottom of the liquid level and capturing the speckle picture emerging when the liquid level is still and speckle pictures at each time after the liquid level is deformed, the step of processing the distortion of the speckle pictures based on the digital speckle related technology to obtain displacement vector field data in the U direction and V direction in a plane at each time on the speckle pictures, the step of processing the displacement vector field data in the U direction and V direction in the plane in an iteration mode to obtain two sets of overall transformation data of the liquid level at each time, and the step of averaging numerical values of the two sets of overall transformation data to obtain the final result data of liquid level features at each time to generate the variation diagram of the liquid level features. The method and system solve the problems that a liquid level feature measuring method measures the liquid level dynamic features hardly, the measuring span is short, efficiency is low, the real-time performance is poor and the measuring method is complex and hard to operate.
Description
Technical field
The application relates to the optical measurement field, specifically, relates to a kind of transparent liquid level micromorphology measuring method and system based on Digital Speckle Correlation Method.
Background technology
Occurring in nature, the insects such as water skipper can freely be drawn swimming or spring and submerged not at the water surface.To play important effect to the development in the fields such as following navigation, shipping industry, military affairs to probing into of its floatation principle.The floating hydro-planing of the solid as representative of the water skipper of take is considered to the result of gravity and buoyancy, surface tension and capillary force isoequilibrium.Because small buoyancy is measured difficulty, surface tension and capillary force experiment are complicated, cause the mechanism of the floating mechanism of small items and aquatic sports up to the present also not fully aware of.Wherein surface tension and micro-buoyancy are two the epochmaking physical quantitys relevant to the liquid level distortion, so Accurate Measurement liquid level pattern and distortion thereof, for the explanation floating mechanism of solid and with the interaction mechanism of liquid level be very important.
Liquid level micromorphology measuring technique mainly is based on traditional laser interferance method at present, and J.C.Wyant has proposed Holographic Shearing Interferometry (J.C.Wyant, Appl Opt, 1973; 12:2057 – 60.), K.D.Hinsch has proposed holographic interferometry (K.D.Hinsch, Appl Opt, 1978; 17:3101-7.).These two kinds of measuring methods reach nano-scale owing to utilizing laser interference to measure sensitivity, but it is smaller due to the constraint of laser beam wavelength to measure range, can't measure the large distortion to mm size.In addition, atomic force microscope level probe probe method also can be realized the nano-precision measurement of liquid level from the face height, but it belongs to probe contact point measurement, can only measure the surface deformation height of single-point, and it is extremely low to measure efficiency, and real-time is poor.These three kinds of universal measurement methods equipment price used is expensive, measure that cost is high, complicated operation, is unfavorable for popularizing of method.A.K.Asundi proposes to utilize streak reflex commercial measurement liquid level pattern (Huang L, A.K.Asundi etc., Opt Express, 2011; 12809-14), this method is simple to operate, but the reflecting power of general transparency liquid is poor, light transmission can affect by force camera to the catching of light, and makes the loss of learning gathered cause larger measuring error, when in addition, liquid surface curvature is larger, will cause the reflection strip light can't record.(" Chinese laser " 2012 such as Zhao Yuchen; 39(9): 0908001-5), (Optics and Lasers in Engineering, 2012 such as Liu Zhanwei; 51(2); The empty grid method of transmission 167-171) proposed respectively based on unidirectional and quadrature grid line is measured the liquid level pattern.These two kinds of methods are due to the method for having used the transmission grid line, and the grid line principal direction of placement is difficult to guarantee parallel with horizontal direction (or vertical direction), if any angle, will cause result that larger error is arranged, and are difficult to get rid of.Simultaneously, these two kinds of methods generally are only applicable to the static topography measurement of liquid level and are not easy to the measurement of liquid level dynamic profile.
Therefore, how to solve existing liquid level topography measurement method and be difficult to the liquid level dynamic profile is measured, measure range little, measure efficiency low, real-time is poor, and the measuring method complicated difficult just becomes technical matters urgently to be resolved hurrily with operation.
Summary of the invention
The application's technical matters to be solved is to provide a kind of transparent liquid level micromorphology measuring method and system based on Digital Speckle Correlation Method, to solve existing liquid level topography measurement method, be difficult to the liquid level dynamic profile is measured, the measurement range is little, measurement efficiency is low, real-time is poor, and the complicated unworkable problem of measuring method.
For solving the problems of the technologies described above, the application provides a kind of transparent liquid level micromorphology measuring method based on Digital Speckle Correlation Method, it is characterized in that, comprising:
A special speckle pattern is placed in to described liquid level bottom, catches each speckle image constantly after the speckle image of described liquid level when static and the distortion of described liquid level;
To the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern;
Carry out respectively iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, then these two groups of whole field deformation data are carried out to the digital average processing to obtain each net result data of described liquid level pattern constantly, generate described liquid level pattern variation diagram.
Further, wherein, to the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern, be further: according to the direction of distortion, the speckle point of distorted is processed to obtain the displacement vector field data of described speckle point U, V direction in face of distorted in speckle pattern.
Further, wherein, carry out iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, be further: set up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, after the displacement vector field data of obtaining described interior U, V direction, carry out iterative processing according to described funtcional relationship and obtain each two groups of whole field deformation data constantly of described liquid level.
Further, wherein, described speckle image is further: water-bed speckle pattern reflects efficient light sources the image captured by image capture device after described liquid level.
For solving the problems of the technologies described above, the application also provides a kind of transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method, it is characterized in that, comprising: image capture module, vector processing module and liquid level micromorphology processing module; Wherein,
Described image capture module, with the vector processing module is described, couple mutually, for a special speckle pattern being placed in to described liquid level bottom, catch each speckle image constantly after the speckle image of described liquid level when static and the distortion of described liquid level, the described speckle image generated is sent to described vector processing module;
Described vector processing module, with described image capture module and liquid level micromorphology processing module, couple mutually respectively, the described speckle image sent for receiving described image capture module, to the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern, this displacement vector field data is sent to described liquid level micromorphology processing module;
Described liquid level micromorphology processing module, with described vector processing module, couple mutually, the described displacement vector field data sent for receiving described vector processing module, carry out iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, these two groups of whole field deformation data are carried out to digital average and process the net result data that obtain each described liquid level pattern of moment, generate described liquid level pattern variation diagram.
Further, wherein, described vector processing module, be further used for, according to the direction of distortion, the speckle point of distorted is used to described speckle point that Digital Speckle Correlation Method processed to obtain distorted in speckle pattern displacement vector field data in each moment on U, V direction in face.
Further, wherein, described liquid level micromorphology processing module, be further used for setting up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, after the displacement vector field data of obtaining described interior U, V direction, carry out iterative processing according to described funtcional relationship and obtain each described two groups of whole field deformation data constantly of described liquid level.
Further, wherein, described speckle image, further reflect efficient light sources for water-bed speckle pattern the image captured by image capture device after liquid level.
Further, wherein, described vector processing module, further for by CPU, GPU and/or have the vector processing module that the chip of data processing function forms.
Further, wherein, described liquid level micromorphology processing module, further for by CPU, GPU and/or have the liquid level micromorphology processing module that the chip of data processing function forms.
Compared with prior art, the described a kind of liquid level micromorphology measuring method of the application and system have reached following effect:
1) the application is by recording liquid level when static and each speckle image constantly after the liquid level distortion, the advantages such as the measurement of full field that uses Digital Speckle Correlation Method to have, simple to operate and sensitivity are high, can realize Static and dynamic liquid level pattern is carried out to the measurement of quick high accuracy ground;
2) the application adopts the liquid level deformation curve is infinitely cut apart, and abundant cut-point is set, and then effectively improves and measure range, and sufficient cut-point can effectively measure small deformation extent, has improved the sensitivity of measuring;
3) light that the application measures speckle image reflection transmits that angle after the distortion liquid level changes and the difference in height of each cut-point, just can comprehensively draw liquid level pattern variation diagram, has simplified dramatically measuring method, is convenient to experimental implementation.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the application, forms the application's a part, and the application's schematic description and description, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
The process flow diagram that Fig. 1 is the described liquid level micromorphology of the embodiment of the present application one measuring method;
Fig. 2 is the diagrammatic cross-section that in the described liquid level micromorphology of Fig. 1 the embodiment of the present application one measuring method, liquid level deforms;
The structured flowchart that Fig. 3 is the described liquid level micromorphology of the embodiment of the present application one measuring system.
Embodiment
Censure specific components as used some vocabulary in the middle of instructions and claim.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the difference on function is used as the criterion of distinguishing with assembly.As " comprising " mentioned in the middle of instructions and claim in the whole text is an open language, therefore should be construed to " comprise but be not limited to "." roughly " refer in receivable error range, those skilled in the art can solve the technical problem in the certain error scope, substantially reach described technique effect.In addition, " couple " word and comprise any indirectly electric property coupling means that directly reach at this.Therefore, if describe a first device in literary composition, be coupled to one second device, represent that described first device can directly be electrically coupled to described the second device, or indirectly be electrically coupled to described the second device by other devices or the means that couple.The instructions subsequent descriptions is for implementing the application's better embodiment, and right described description is to illustrate that the application's rule is purpose, not in order to limit the application's scope.The application's protection domain is as the criterion when looking the claims person of defining.
Below in conjunction with accompanying drawing, the application is described in further detail, but not as the restriction to the application.
Embodiment mono-:
As shown in Figure 1, be the described a kind of transparent liquid level micromorphology measuring method flow process based on Digital Speckle Correlation Method (specific term, a photodynamics measuring technique of development in twenty end of the century) of the embodiment of the present application one.
In the present embodiment, described speckle image is that water-bed speckle pattern reflects efficient light sources the image captured by image capture device after liquid level, and wherein, described speckle pattern is a kind of spot with certain shade of gray of stochastic distribution.Catching of described speckle image can be passed through CCD(Charge-coupled Device, charge coupled cell, i.e. imageing sensor) camera and/or there is the image capture device that changes image into the digital signal function and realize.In actual applications, described speckle pattern is placed in to the bottom, outside of the glass flume that fills appropriate transparency liquid, for improving field luminance at the other light source of arranging of tank, image capture device (as: CCD camera) is arranged at the tank top.In addition, speckle pattern is exactly to be placed in liquid level bottom or below, the refraction law that could should use up like this, i.e. Snell's law in the method.
In the present embodiment, after described liquid level deforms, the skew of transmission angle can occur in the light that described speckle pattern reflects after the deformed region of described liquid level, thereby produce distortion phenomenon (as: in described speckle image, a certain speckle point can extend or contraction etc. towards a certain side of image) in the described speckle image captured, therefore can be processed the described speckle point utilization Digital Speckle Correlation Method of distorted according to the direction of distortion, further obtain described speckle point U in face of distorted in described speckle pattern, the displacement vector field data of V direction.
Here U, V direction displacement vector field can iteration go out the whole field deformation data, and these two kinds of results are identical in theory, understand deviation to some extent in reality, so just can further carry out digital average, purpose is to reduce error.
Further, carrying out before iterative processing obtains each two groups of whole field deformation data constantly of described liquid level, need to set up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, specifically, as shown in Figure 2, the deformation curve of described liquid level is cut apart and be approximated to the small broken line of unlimited multistage according to the distortion diagrammatic cross-section of described liquid level, wherein
On described speckle pattern, the light of small speckle point reflection penetrates liquid level, and snell law is followed in the propagation of this light:
N in formula
airand n
waterbe respectively the refractive index of sky G&W; I means each cut-point sequence in described liquid level deformation curve, i=1, and 2 ...;
and θ
ibe respectively the i section and cut apart incident angle and the emergence angle of transmitted ray on broken line.
The right angle △ NiPNi-1 meeting geometric triangle relation formed between each cut-point:
tanθ
i=h
i/L (b)
In formula, hi means the difference in height between i-1 cut-point and i cut-point, the i.e. deformation gradient of each cut-point; L is for calculating step-length, and its value is relevant to computational accuracy, and (in practical operation, the size of L has determined the quantity of cut-point, and L is less, and cut-point is more, and measuring accuracy is higher; In addition, the less computing velocity of L is slower, considers measuring accuracy and measures efficiency, and the general value of L is 5 pixel sizes, and the size of pixel is determined by the image size collected and the ratio of physical size); θ
imean i section liquid level cut apart broken line and surface level angle its equal emergence angle.
The right angle △ ANiB meeting geometric triangle relation that in described speckle pattern, the horizontal shift of speckle point forms with corresponding described cut-point:
S in formula
ihorizontal shift for small speckle point in described speckle pattern; H is initial level; Σ hi-1 means the 1st cut-point and i-1(i>1) difference in height between individual cut-point, also the i-1 cut-point departs from the height of surface level.
In above-mentioned (a) and (b), (c), n
air, n
water, but L, H be initial known quantity or direct measurement;
θ
i, h
ifor known variables, it is that described liquid level does not deform that its original bulk is 0().
Thereby, after the displacement vector field data that obtains described interior U, V direction, carry out iterative processing according to the above-mentioned relation formula and just can obtain each two groups of whole field deformation data constantly of described liquid level.
Embodiment bis-:
As shown in Figure 3, be the described a kind of liquid level micromorphology measuring system based on Digital Speckle Correlation Method of the embodiment of the present application two, comprising: image capture module 201, vector processing module 202 and liquid level micromorphology processing module 203; Wherein,
Described image capture module 201, with vector processing module 202 is described, couple mutually, for a special speckle pattern being placed in to described liquid level bottom, catch each speckle image constantly after the speckle image of described liquid level when static and the distortion of described liquid level, will generate speckle image and be sent to described vector processing module 202.
Described vector processing module 202, with described image capture module 201 and liquid level micromorphology processing module 203, couple mutually respectively, the described speckle image sent for receiving described image capture module 201, to the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern, this displacement vector field data is sent to described liquid level micromorphology processing module 203.
Described liquid level micromorphology processing module 203, with described vector processing module 202, couple mutually, the described displacement vector field data sent for receiving described vector processing module 202, carry out respectively iterative processing according to the displacement vector field data of described interior U, V direction and obtain each two groups of whole field deformation data constantly of described liquid level, these two groups of whole field deformation data are carried out to digital average and process the net result data of obtaining each described liquid level pattern of moment, generate described liquid level pattern variation diagram.
In the present embodiment, described speckle image is that water-bed speckle pattern reflects efficient light sources the image captured by image capture device after liquid level, and wherein, described speckle pattern is a kind of spot with certain shade of gray of stochastic distribution.In actual applications, described speckle pattern is placed in to the bottom, outside of the transparent tank that fills appropriate transparency liquid, for improving field luminance at the other light source of arranging of tank, image capture device (as: CCD camera) is arranged at the tank top.
Further, image capture module 201 can be CCD(Charge-coupled Device, charge coupled cell, i.e. imageing sensor) camera and/or there is the image capture device that image is changed into to the digital signal function.
In the present embodiment, after described liquid level deforms, the skew of transmission angle can occur in the light that described speckle pattern reflects after the deformed region of described liquid level, thereby produce distortion phenomenon (as: in described speckle image, a certain speckle point can extend or contraction etc. towards a certain side of image) in the described speckle image captured in described image capture module 201, therefore described vector processing module 202 can be processed the described speckle point utilization Digital Speckle Correlation Method of distorted according to the direction of distortion, further obtain described speckle point U in face of distorted in described speckle pattern, the displacement vector field data of V direction.
Further, described liquid level micromorphology processing module 203 is before carrying out iterative processing, set up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, specifically, as shown in Figure 2, described liquid level micromorphology processing module 203 is cut apart the deformation curve of described liquid level and is approximated to the small broken line of unlimited multistage according to the distortion sectional view of described liquid level, wherein
On described speckle pattern, the light of small speckle point reflection penetrates liquid level, and snell law is followed in the propagation of this light:
N in formula
airand n
waterbe respectively the refractive index of sky G&W; I means each cut-point sequence in described liquid level deformation curve, i=1, and 2 ...;
and θ
ibe respectively the i section and cut apart incident angle and the emergence angle of transmitted ray on broken line.
The right angle △ NiPNi-1 meeting geometric triangle relation formed between each cut-point:
tanθ
i=h
i/L (b)
In formula, hi means the difference in height between i-1 cut-point and i cut-point, the i.e. deformation gradient of each cut-point; L is for calculating step-length, and its value is relevant to computational accuracy, and (in practical operation, the size of L has determined the quantity of cut-point, and L is less, and cut-point is more, and measuring accuracy is higher; In addition, the less computing velocity of L is slower, considers measuring accuracy and measures efficiency, and the general value of L is 5 pixel sizes, and the size of pixel is determined by the image size collected and the ratio of physical size); θ
imean i section liquid level cut apart broken line and surface level angle its equal emergence angle.
The right angle △ ANiB meeting geometric triangle relation that in described speckle pattern, the horizontal shift of speckle point forms with corresponding described cut-point:
S in formula
ihorizontal shift for small speckle point in described speckle pattern; H is initial level; Σ hi-1 means the 1st cut-point and i-1(i>1) difference in height between individual cut-point, also the i-1 cut-point departs from the height of surface level.
In above-mentioned (a) and (b), (c), n
air, n
water, but L, H be initial known quantity or direct measurement;
θ
i, h
ifor known variables, it is that described liquid level does not deform that its original bulk is 0().
Thereby described liquid level micromorphology processing module 203, after the displacement vector field data that obtains described interior U, V direction, is carried out iterative processing according to the above-mentioned relation formula and just can be obtained each two groups of whole field deformation data constantly of described liquid level.
In the present embodiment, described vector processing module 202 can be CPU(CentralProcessingUnit, central processing unit), GPU(Graphic Processing Unit, graphic process unit) and/or there is the chip of data processing function.
Equally, described liquid level micromorphology processing module 203 can be also CPU(CentralProcessingUnit, central processing unit), GPU(Graphic Processing Unit, graphic process unit) and/or there is the chip of data processing function.
Compared with prior art, the described a kind of liquid level micromorphology measuring method of the application and system have reached following effect:
1) the application is by recording liquid level when static and each speckle image constantly after the liquid level distortion, the advantages such as the measurement of full field that uses Digital Speckle Correlation Method to have, simple to operate and sensitivity are high, can realize Static and dynamic liquid level pattern quick high accuracy ground is measured;
2) the application adopts the liquid level deformation curve is infinitely cut apart, and abundant cut-point is set, and then effectively improves and measure range, and sufficient cut-point can effectively measure small deformation extent, has improved the sensitivity of measuring;
3) light that the application measures speckle image reflection transmits that angle after the distortion liquid level changes and the difference in height of each cut-point, just can comprehensively draw liquid level pattern variation diagram, has simplified dramatically measuring method, is convenient to experimental implementation.
Above-mentioned explanation has illustrated and has described some preferred embodiments of the application, but as previously mentioned, be to be understood that the application is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in application contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, be changed.And the spirit and scope that the change that those skilled in the art carry out and variation do not break away from the application, all should be in the protection domain of the application's claims.
Claims (10)
1. the transparent liquid level micromorphology measuring method based on Digital Speckle Correlation Method, is characterized in that, comprising:
A special speckle pattern is placed in to described liquid level bottom, catches each speckle image constantly after the speckle image of described liquid level when static and the distortion of described liquid level;
To the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern;
Carry out respectively iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, then these two groups of whole field deformation data are carried out to the digital average processing to obtain each net result data of described liquid level pattern constantly, generate described liquid level pattern variation diagram.
2. the transparent liquid level micromorphology measuring method based on Digital Speckle Correlation Method as claimed in claim 1, it is characterized in that, to the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern, be further: according to the direction of distortion, the speckle point of distorted is processed to obtain the displacement vector field data of described speckle point U, V direction in face of distorted in speckle pattern.
3. the transparent liquid level micromorphology measuring method based on Digital Speckle Correlation Method as claimed in claim 1, it is characterized in that, carry out iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, be further: set up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, after the displacement vector field data of obtaining described interior U, V direction, carry out iterative processing according to described funtcional relationship and obtain each two groups of whole field deformation data constantly of described liquid level.
4. the transparent liquid level micromorphology measuring method based on Digital Speckle Correlation Method as claimed in claim 1, it is characterized in that, described speckle image is further: water-bed speckle pattern reflects efficient light sources the image captured by image capture device after described liquid level.
5. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method, is characterized in that, comprising: image capture module, vector processing module and liquid level micromorphology processing module; Wherein,
Described image capture module, with the vector processing module is described, couple mutually, for a special speckle pattern being placed in to described liquid level bottom, catch each speckle image constantly after the speckle image of described liquid level when static and the distortion of described liquid level, the described speckle image generated is sent to described vector processing module;
Described vector processing module, with described image capture module and liquid level micromorphology processing module, couple mutually respectively, the described speckle image sent for receiving described image capture module, to the distortion in described speckle image, use Digital Speckle Correlation Method to be processed to obtain the displacement vector field data of U, V direction in the face in each moment on speckle pattern, this displacement vector field data is sent to described liquid level micromorphology processing module;
Described liquid level micromorphology processing module, with described vector processing module, couple mutually, the described displacement vector field data sent for receiving described vector processing module, carry out iterative processing to obtain each two groups of whole field deformation data constantly of described liquid level according to the displacement vector field data of described interior U, V direction, these two groups of whole field deformation data are carried out to digital average and process the net result data that obtain each described liquid level pattern of moment, generate described liquid level pattern variation diagram.
6. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method as claimed in claim 5, it is characterized in that, described vector processing module, be further used for, according to the direction of distortion, the speckle point of distorted is used to described speckle point that Digital Speckle Correlation Method processed to obtain distorted in speckle pattern displacement vector field data in each moment on U, V direction in face.
7. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method as claimed in claim 5, it is characterized in that, described liquid level micromorphology processing module, be further used for setting up the surface deformation of described liquid level and the funtcional relationship between described speckle pattern in-plane displacement, after the displacement vector field data of obtaining described interior U, V direction, carry out iterative processing according to described funtcional relationship and obtain each described two groups of whole field deformation data constantly of described liquid level.
8. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method as claimed in claim 5, is characterized in that, described speckle image, further reflect efficient light sources for water-bed speckle pattern the image captured by image capture device after liquid level.
9. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method as claimed in claim 5, is characterized in that, described vector processing module, further for by CPU, GPU and/or have the vector processing module that the chip of data processing function forms.
10. the transparent liquid level micromorphology measuring system based on Digital Speckle Correlation Method as claimed in claim 5, it is characterized in that, described liquid level micromorphology processing module, further for by CPU, GPU and/or have the liquid level micromorphology processing module that the chip of data processing function forms.
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| CN107677697A (en) * | 2017-09-20 | 2018-02-09 | 华中科技大学 | A kind of chip thermal deformation measurement method based on SEM |
| CN110986811A (en) * | 2019-11-01 | 2020-04-10 | 武汉科技大学 | Speckle preparation method for deformation test of shaped refractory material |
| CN113405628A (en) * | 2021-06-22 | 2021-09-17 | 北京理工大学 | Liquid level deformation and morphology measurement method and system based on double-layer graph transmission imaging |
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| CN104154955A (en) * | 2014-05-19 | 2014-11-19 | 北京理工大学 | Method and system for dynamic measurement of liquid surface morphology and dosage of liquid propellant in storage tank |
| CN104154955B (en) * | 2014-05-19 | 2016-05-11 | 北京理工大学 | Tank liquid propellant liquid level pattern and dosage dynamic measurement method and system |
| CN107677697A (en) * | 2017-09-20 | 2018-02-09 | 华中科技大学 | A kind of chip thermal deformation measurement method based on SEM |
| CN107677697B (en) * | 2017-09-20 | 2019-05-21 | 华中科技大学 | A kind of chip thermal deformation measurement method based on scanning electron microscope |
| CN110986811A (en) * | 2019-11-01 | 2020-04-10 | 武汉科技大学 | Speckle preparation method for deformation test of shaped refractory material |
| CN110986811B (en) * | 2019-11-01 | 2021-05-25 | 武汉科技大学 | Speckle preparation method for deformation test of shaped refractory material |
| CN113405628A (en) * | 2021-06-22 | 2021-09-17 | 北京理工大学 | Liquid level deformation and morphology measurement method and system based on double-layer graph transmission imaging |
| CN113405628B (en) * | 2021-06-22 | 2022-03-29 | 北京理工大学 | Liquid level deformation and morphology measurement method and system based on double-layer graph transmission imaging |
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