CN202693258U - Imaging system for non-contact measurement of oceanic turbulence parameters - Google Patents
Imaging system for non-contact measurement of oceanic turbulence parameters Download PDFInfo
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- CN202693258U CN202693258U CN 201220351528 CN201220351528U CN202693258U CN 202693258 U CN202693258 U CN 202693258U CN 201220351528 CN201220351528 CN 201220351528 CN 201220351528 U CN201220351528 U CN 201220351528U CN 202693258 U CN202693258 U CN 202693258U
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Abstract
The utility model discloses an imaging system for the non-contact measurement of oceanic turbulence parameters. The imaging system comprises a pulse laser transmitter system, a stripe target board and a receiver system, wherein the pulse laser transmitter system is used for producing an optical wave with uniform energy distribution; the stripe target board is opposite to the pulse laser transmitter system, and the optical wave passes through oceanic turbulence to be measured, reaches a stripe target and is reflected; and the reflected optical wave passes through the oceanic turbulence to be measured, and then is received and acquired by the receiver system to obtain remote sensing image information of oceanic turbulence. The imaging system can detect structural parameters of the oceanic turbulence on the premise of not damaging turbulence structures in a laser imaging mode.
Description
Technical field
The utility model relates to oceanic turbulence parameter measurement field, particularly a kind of imaging system of oceanic turbulence parameter non-cpntact measurement.
Background technology
In recent years, Underwater Imaging is surveyed and is widely used in the every field such as Underwater Target Detection, the observation of underwater topography landforms, for human research sea life, marine environment provide strong research means.But, now about the report of laser imaging distance and picture element, be mostly to obtain under the Static Water concrete conditions in the establishment of a specific crime controlled under laboratory environment.Survey for the laser imaging under the complicated ocean condition, not only be difficult to reach the maximum detectable range under the Static Water concrete conditions in the establishment of a specific crime, and the mechanism that affects of picture element is not quite similar also.In true marine environment, turbulent flow becomes the key factor that affects Laser Underwater image-forming range and picture element.Owing to be subject to the impact of turbulent flow under water, when transmitting under water, light can pass turbulent flow from diverse location, and cause working direction to change, affect the Illumination Distribution on the measured target, and the light wave of measured target reflection will see through turbulence transfer again.This will cause image quality to be subject to the impact of scalloping, picture noise etc.For underwater lidar system, this can badly influence the image quality of light beam.Therefore, the research oceanic turbulence is very necessary on the impact of Underwater Imaging system.Survey oceanic turbulence and can set up a turbulent flow Refractive Index Model, obtain the optical transfer function of turbulent flow, set up turbulence model under water, this surveys for the research Underwater Imaging and image recovers to have important effect.
Because the randomness of oceanic turbulence diffusion process, and to be subject to the impact of the many factors such as sea area hydrometeorology and season, go back so far the satisfied Universal Theory of neither one.In the research aspect experiment, the technology that the employed method of detection oceanic turbulence is mainly used is ocean observation technology, depend on acoustic Doppler fluid velocity profile instrument, three-D high frequency point type current meter, turbulent flow microscale section plotter and high precision thermohaline deep profile instrument, this method is multiplex mixes scientific domain in the research oceanic turbulence.Wherein, shear flow sensor is a kind of turbulent flow microscale section plotter, specializes in the detector of oceanic turbulence microstructure, mainly is to measure the Turbulent Kinetic dissipative shock wave.This detection method belongs to the measurement of contact, shear flow sensor is installed on its special carrier, following carrier moves in seawater with certain speed, the piezoelectric ceramic piece of shear flow sensor inside is measured the pulsation of the horizontal or vertical direction of Oceanic Microstructure turbulent flow in the motion process, can obtain the seawater microstructure turbulence dissipation rate in measured zone according to physical quantitys such as seawater viscosity, carrier movement speed again.
In turbulence detecting, most crucial part is exactly the structural parameters that obtain turbulent flow.The method of measuring at present the structural parameters of turbulent flow mainly is the temperature fluctuation method, and it is the indirect measurement method that obtains turbulent flow refractive index fluctuation characteristic by measuring temperature fluctuation, and its prerequisite is that the fluctuation characteristic of refractive index depends on the fluctuation characteristic of temperature fully.The weak point of this method is: one, serviceability temperature Fluctuation Method detection oceanic turbulence has certain limitation.At first oceanic turbulence is subject to affects more complicated, and the refractive index of water is relevant with density, temperature, pressure, salinity and wavelength, can not single serviceability temperature affect to replace; Secondly, this temperature fluctuation method space distribution rate and time distributive law are limited, and the size of oceanic turbulence extensively distributes to the km magnitude from the mm magnitude, and the temperature fluctuation method can not meet the demands when measuring the small size turbulent flow; The 3rd, the temperature fluctuation ratio juris causes it inevitably can cause certain disturbance to turbulence structure, brings inevitable error for detection operations.
The method that optics also occurred at present utilizing is the method by the laser measurement Turbulent Structure Parameters particularly, this method has the precision height, but do not destroy the advantage of turbulence structure and continuous probe, but existing turbulent flow spy optical means all is the detector for the atmospheric sounding turbulent flow, the key element that affects of atmospheric turbulence and oceanic turbulence exists very large different, the parameter that characterizes turbulence structure is also different, therefore on the method for measuring method and deal with data, can not adopt identical method, and owing to there is the logical light window of 470-580nm in the ocean, this and be not suitable for the detection of oceanic turbulence.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art, and a kind of imaging system of the non-contact measurement for oceanic turbulence is provided, and utilizes the mode of laser imaging, detects the oceanic turbulence structural parameters under the prerequisite of not destroying turbulence structure.
In order to achieve the above object, the utility model is taked following technical scheme:
A kind of imaging system that noncontact is surveyed of taking for oceanic turbulence is characterized in that this imaging system comprises:
The pulse laser emitter system is for generation of the light wave of energy distribution homogenising;
The stripe target plate is oppositely arranged with described pulse laser emitter system, and turbulent flow to be measured is distributed with the rectangle striped at black and white interval on it, and described light wave passes and is reflected after oceanic turbulence to be measured arrives on this stripe target;
Receiver system, described reflecting light are received and gather after passing this oceanic turbulence to be measured, obtain the remote sensing images information of oceanic turbulence.
As improvement of the present utility model, described receiver system comprises narrow band pass filter, telescopic optical system and ICCD, reflecting light gathers the remote sensing images information that the signal that converges can obtain turbulent flow through converging to after described narrow band pass filter and the telescopic optical system on the ICCD focal plane.
As improvement of the present utility model, the pulse laser emitter system comprises laser instrument, transmitter-telescope system and frosted glass, and the exploring laser light of laser instrument emission incides on the frosted glass after this transmitter-telescope system expands, this frosted glass is with the laser homogenising, to incide in the oceanic turbulence.
In transmitter system, pulsed laser sends pulsed light wave, and after expanding via Kepler telescope, process frosted glass is to its being evenly distributed of light-wave energy.Light wave after the homogenising arrives the black and white rectangular strip card that is positioned at Turbulent Base by oceanic turbulence to be measured, and produces reflection, and reflecting light will again pass oceanic turbulence and return.In receiver system, then reflecting light is converged on the image intensifier focal plane by convex lens through inciding on the convex lens behind the narrow band pass filter, is gathered by CCD by the image intensifier amplifying signal, and is sent to image processing system and carries out data and process.Wherein, the rear orientation light that produces in the laser light wave transmission course is when arriving receiving system, owing to adopted rangerate-gate technique, the storbing gate among the enhancement mode electric charge coupling mechanism ICCD is in closed condition, so that rear orientation light can't pass through receiving optics, can't be received by CCD.When the reflecting light signal of target channel(l)ed plate arrived ICCD, storbing gate was in opening, and what CCD received is the reflecting light signal, thereby has effectively avoided the interference of rear orientation light.
Comprising the turbulent flow information relevant with detecting devices in the image information that imaging system obtains in the utility model, these information are carried out data process the modulation transfer function that just can obtain turbulent flow, the index distribution that then is finally inversed by turbulent flow characterizes turbulence structure.It is very difficult that the reflected image of arbitrary target is carried out spectrum analysis, generally is to select the artificial target of laying, and image quality is higher, is conducive to the comparatively accurate modulation transfer function of measuring and analyze.The rectangle black and white strip that uses known frequency spectrum in the utility model is analyzed the modulation transfer function method and is adopted the blade method as object.Can certainly adopt additive method to calculate, such as impulse method, sinusoidal input method and some impulse method etc.
When carrying out the oceanic turbulence measurement, at first utilize the pulsed laser in the imaging system to survey oceanic turbulence, obtain the turbulent flow remote sensing images information between detector and the measured target; Secondly, the image information that obtains is analyzed, obtained the modulation transfer function of turbulent flow; Then, the modulation transfer function of the described turbulent flow that measures is carried out inverting, thereby obtain the structural parameters of oceanic turbulence.
The concrete steps that obtain turbulent flow remote sensing images information are as follows: the pulsed laser transponder pulse light wave of imaging system, pass and produce reflection after oceanic turbulence to be measured arrives the stripe target plate that is positioned at opposite side, reflecting light again passes oceanic turbulence and returns, receive by receiving trap, can obtain the turbulent flow remote sensing images of oceanic turbulence.
Be provided with enhancement mode electric charge coupling mechanism (ICCD) in the receiving trap, it is controlled this enhancement mode electric charge coupling mechanism (ICCD) receiving target reflecting light and stops rear orientation light by storbing gate, thereby obtains turbulent flow remote sensing images information.
Modulation transfer function (the MTF of turbulent flow
Turtulence) calculate by following formula:
MTF
total＝MTF
equipment×MTF
turtulence
Wherein, MTF
EquipmenBe the modulation transfer function of imaging system, MTF
TotalBe the modulation transfer function of imaging system when surveying oceanic turbulence.
The modulation transfer function of imaging system when surveying oceanic turbulence
TotalCalculate by the blade method, the blade method mainly is to utilize the jump in brightness district to extract the edge and calculate MTF.The step that the blade method is calculated MTF is:
1) intensity profile according to edge imaging simulates edge spread function curve ESF.
2) differentiate of edge spread function curve draws the line spread function curve.
3) the line spread function curve is done Fourier transform and obtain the MTF curve.
Survey the resulting information of oceanic turbulence system and process the modulation transfer function that the imaging system that obtains is total through above-mentioned data
TotaThe modulation transfer function that this is total
TotaThe MTF that not only comprises detecting devices
Equipm, and comprise the modulation transfer function of turbulent flow
Turtulence
The MTF computing formula of whole optical system is:
MTF
total＝MTF
equipment×MTF
turtulence
Use same set of equipment, partly use still air to substitute oceanic turbulence, the MTF that utilizes detection system to measure is the MTF of detecting devices, namely MTF
EquipmentFinally by calculating the modulation transfer function that can draw turbulent flow
Turtulence
By the modulation transfer function to oceanic turbulence
TurtulenceCarry out inverting to obtain the structural parameters of oceanic turbulence.In the inversion step, set up in advance first the corresponding relation between oceanic turbulence structural parameters and the turbulent flow modulation transfer function, the modulation transfer function (MTF of the described turbulent flow that then detection is obtained
Trtulence) compare with above-mentioned relation, can determine the oceanic turbulence structural parameters.
The detailed process that corresponding relation is set up is: at first, simulate the index distribution of various oceanic turbulences, obtain corresponding structural parameters; Then obtain the turbulent flow modulation transfer function of various oceanic turbulences; At last, set up the one-to-one relationship of oceanic turbulence structural parameters and turbulent flow modulation transfer function.
The utility model uses the index distribution of hydrodynamic theory oceanic turbulence, wherein the model present embodiment of theoretical oceanic turbulence preferably uses RNG κ-ε model, certainly can use other theoretical oceanic turbulence model, such as standard model, κ-ω model etc.Utilize the derive modulation transfer function of theoretical oceanic turbulence of ray tracing method; Set up the one by one database of corresponding modulating transport function MTF of oceanic turbulence structural parameters; The MTF that the usage data library information obtains actual measurement
TurtulenceCarry out inverting, can obtain the structural parameters of oceanic turbulence.
The structural parameters of oceanic turbulence of the present utility model are preferably the structural parameters in RNG κ-ε turbulence model, RNG κ-ε turbulence model can be used for processing high rate of strain and larger the flowing of streamline degree of crook, and the structural parameters in its equation are fit to characterize the architectural feature of oceanic turbulence.
Adopt the blade method comparatively simple to the requirement of image, as long as there is the blade district of jump in brightness can reach requirement.When especially surveying oceanic turbulence, resulting image is desirable not as the image that obtains under laboratory condition, but it is relatively easy to seek knife edge.And utilize blade method deal with data more quick, can realize continuous Measuring Oceanic turbulent flow in conjunction with the application of Fluid Computation method.
Beneficial effect with respect to prior art is:
What one, the utility model adopted is contactless mode, utilizes the principle of laser imaging, and the Binding distance gating technique can not destroyed under the prerequisite of turbulence structure not contacting turbulent flow, detects accurately the image information of oceanic turbulence.According to these image informations, adopt frequency spectrum relative method and Fourier transform, just can obtain the modulation transfer function of oceanic turbulence, and then be finally inversed by the structural parameters of oceanic turbulence, reach the purpose of contactless detection oceanic turbulence parameter.
Its two, the utility model has adopted the laser active illumination detection based on the method for laser imaging, utilizes bluish-green pulsed laser to produce bluish-green light wave the black and white rectangular strip card of Turbulent Base is carried out imaging.Adopted simultaneously rangerate-gate technique, improved greatly image quality, so that detection data is more accurately credible.The detecting turbulence method advantage that the method for this imaging is compared traditional is visual result, be convenient to process and understand, and image spatial resolution is high, and can the customer service time impact of upper and experimental situation.
They are three years old, the method of deal with data has fast and accurately characteristics in the utility model, what detector directly obtained is the reflected image information of target, because what adopt is active target, the method of utilizing Frequency spectrum ratio to combine than analytical approach and CFD analog simulation, on obtaining information and the deal with data, obtain accurately the parameter of the dynamic turbulence structure in ocean fast and accurately, in the past traditional method of comparing is easier accurately.
They are four years old, adopted the method for optical method for measuring oceanic turbulence in conjunction with computational fluid dynamics in the utility model, but this method can realize accurate continuity and measure, and can access real-time oceanic turbulence structure, has larger advantage than traditional detection method.
Description of drawings
Fig. 1 is turbulence detecting synoptic diagram of the present utility model.
Fig. 2 is that detection system of the present utility model is at the structural representation of a direction.
Fig. 3 is that detection system of the present utility model is at the structural representation of another direction.
Fig. 4 is the method flow diagram of detection oceanic turbulence structural parameters of the present utility model.
Fig. 5 is that blade method of the present utility model is calculated the MTF process flow diagram.
Fig. 6 is optical transmitting system structural representation of the present utility model.
Fig. 7 is receiving optics structural representation of the present utility model.
Among the figure: 1 is the pulse laser emitter system, 2 is pulsed laser, and 3 is the Kepler telescope optical system, and 4 is frosted glass, 5 is the artificial stripe target plate of laying, 6 is receiver system, and 7 is narrow band pass filter, and 8 is the Galileo telescope optical system, 9 is enhancement mode electric charge coupling mechanism ICCD, 10 is fixed guide, and 11 is plant bottom case, and 12 is web member.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The imaging system that the oceanic turbulence of a kind of laser imaging in the present embodiment is surveyed, this imaging system comprise transmitter system 1, manually lay stripe target plate 5 and receiver system 6.
Emission telescopic system 3 in the present embodiment is preferred Keplerian telescope system, as shown in Figure 6.The image quality of refracting telescope is relatively good, and the visual field is large, and is easy to use, is easy to safeguard.Because the single lens objective spherical aberration is more serious, telescopic system adopts two lens combination to make object lens.The concavees lens that the convex lens that this lens doublet is made by a crown glass of close proximity and flint glass are made form to a certain extent cancellation spherical aberration and coma.The multiple that expands of emission telescopic system is 3 ~ 5 times, and it is 25mm that object lens and eyepiece are the aperture.Focal length is suitably selected according to expanding multiple.
Lay target 5 settings and be positioned at the turbulent flow opposite side, this is manually laid target 5 and is the black and white strip plate, and fringe distribution is the rectangular arranged of homogenising.The artificial Target Board material of laying target 5 is preferably PVC.The light wave of homogenising is easier to analysis and calculation to the image-forming information of target.
Exploring laser light incides on the laying target 5 after passing oceanic turbulence, and received machine system 6 receives after the reflected light of reflection passes oceanic turbulence.
Receiver system 6 comprises receiving optics 8, optical filter 7, enhancement mode electric charge coupling mechanism ICCD9.
Reflected light is input to receive in the optical lens 8 after optical filter 7 filters and carries out exporting after the light beam convergence processing.
The reception optical lens 8 preferred Galileo optical telescopes that adopt in the present embodiment, as shown in Figure 7.It is simple in structure, and optical energy loss is few, and lens barrel is short, very light.It is 25mm that object lens and eyepiece are the aperture, and focal length is selected according to the effect that focuses on.
The light beam that receives optical lens 8 outputs is input among the enhancement mode electric charge coupling mechanism ICCD9, carry out amplification and the opto-electronic conversion of signal, obtain the image information of oceanic turbulence, calculate and inverting by the modulation transfer function to image, obtain at last the structural parameters of oceanic turbulence.
Enhancement mode electric charge coupling mechanism ICCD9 in the present embodiment is applicable to adopt in the laser imaging system of rangerate-gate technique.Rangerate-gate technique is to use pulsed laser and gating video camera, utilizes the priority of time to separate scattered light on the different distance and the reflected light of target, so that the signal that is reflected by target arrives video camera and imaging within the time of gating work.For other pulse laser of nanosecond, want to obtain the gating image of Active Imaging target, receive the function that image device must possess quick gating.Be the millisecond magnitude frame-scan period of general ccd video camera, and laser pulse is nanosecond order, so just causes the target echo of part to lose, and affected greatly the ability of surveying.In order to reach the purpose of Laser Active Imaging System Used service range gating technique, need to before CCD, settle the gated imaging booster, the gated imaging booster has played fast gate action, has compensated again simultaneously because CCD reduces the effective sensitivity reduction that causes integral time.Ccd video camera links to each other with the image enhancement device by optical fiber, has just consisted of enhancement mode electric charge coupling mechanism ICCD9.The Laser Range Gated Imaging System that adopts enhancement mode electric charge coupling mechanism ICCD9 and laser instrument to consist of can be realized gating easily, and the shutter opening time is shorter, and range resolution is just higher.Its reference performance technical indicator has: minimum gate-width 2ns, and spectral range 125～900nm, effectively the pixel number can reach 1380 * 1024, and the quantum efficiency of photocathode reaches 50%.
When utilizing above-mentioned imaging system to carry out the oceanic turbulence detection, at first utilize pulsed laser 2 to survey oceanic turbulences, obtain the turbulent flow remote sensing images information between enhancement mode electric charge coupling mechanism ICCD9 and the measured target 5.
Adopt pulsed laser 2 transponder pulse light waves in the present embodiment, after expanding via Kepler telescope optical system 3, frosted glass 4 being evenly distributed to its light-wave energy.Light wave after the homogenising arrives the artificial laying stripe target plate 5 that is positioned at the turbulent flow opposite side by oceanic turbulence to be measured, and produces reflection, and reflecting light will again pass oceanic turbulence and return.In receiver system 6, reflecting light passes Galileo telescope optical system 8 through behind the narrow band pass filter 7, converged on the image intensifier focal plane of enhancement mode electric charge coupling mechanism ICCD9, gather the image intensifier amplifying signal and obtain turbulent flow remote sensing images information.In this imaging process, adopt range-gated imaging technique, by the storbing gate among the enhancement mode electric charge coupling mechanism ICCD9, effectively avoided the impact of rear orientation light, greatly improved the quality of imaging, so that measurement result is more accurate.
The striped of stripe target plate 5 is preferably black and white and rectangular distribution.
Utilize the method for laser imaging to survey oceanic turbulence traditional optical means of comparing, has especially the advantage that visual result is easy to analyze, while Binding distance gating technique, can effectively avoid the impact of rear orientation light, greatly improved the quality of imaging, so that measurement result is more accurate.
Second step is analyzed the image information that obtains, and obtains the modulation transfer function of above-mentioned institute detecting turbulence
TotalRealize detection to the oceanic turbulence structural parameters by modulation transfer function in the utility model.
The method of in the present embodiment image being carried out preferably adopting when the data processing obtains modulation transfer function is the blade method, also can use other computing method.The step that the blade method is calculated MTF is:
1) intensity profile according to edge imaging simulates edge spread function curve ESF.
2) differentiate of edge spread function curve draws the line spread function curve.
3) the line spread function curve is done Fourier transform and obtain the MTF curve.
Survey the resulting image of oceanic turbulence system and process through above-mentioned data, obtain MTF
TotalMF to whole detection oceanic turbulence system
TotalHave:
MTF
total＝MTF
equipment×MTF
turtulence
MTF
TotalThe modulation transfer function that imaging detection system obtains when surveying oceanic turbulence, MTF
EquipmentThe modulation transfer function of imaging detection system itself, MTF
TurtulenceIt is the modulation transfer function of oceanic turbulence.
Use same set of equipment, partly use still air to substitute oceanic turbulence, utilize detection system to measure the MTF of detecting devices itself
EquipmentFinally by calculating the modulation transfer function that can draw turbulent flow
Turtulence
The 3rd step is with the modulation transfer function of the described turbulent flow that measures
TrtulenceCarry out inverting, thereby obtain the structural parameters of oceanic turbulence.The mistake of inverting claims as follows:
1) by RNG κ-ε turbulence model, uses the index distribution of computational fluid dynamics modeling theory oceanic turbulence; The preferred RNG κ-ε turbulence model that adopts also can adopt other turbulence models, as long as can simulate the index distribution of oceanic turbulence in the present embodiment.
2) utilize the derive modulation transfer function of theoretical oceanic turbulence of ray tracing method;
3) set up the one by one database of corresponding modulating transport function MTF of oceanic turbulence structural parameters;
4) usage data library information MTF that actual measurement is obtained
TurtulenceCarry out inverting, can obtain the structural parameters of oceanic turbulence.
Structural parameters are the structural parameters in RNG κ-ε turbulence model in the present embodiment.
Claims (3)
1. imaging system that is used for the non-cpntact measurement of oceanic turbulence parameter is characterized in that this imaging system comprises:
Pulse laser emitter system (1) is for generation of the light wave of energy distribution homogenising;
Stripe target plate (5) is oppositely arranged with described pulse laser emitter system (1), and turbulent flow to be measured is distributed with the rectangle striped at black and white interval on it, and described light wave passes and is reflected after oceanic turbulence to be measured arrives on this stripe target;
Receiver system (6), described reflecting light are received and gather after passing this oceanic turbulence to be measured, obtain the remote sensing images information of oceanic turbulence.
2. imaging system according to claim 1, it is characterized in that, described receiver system (6) comprises narrow band pass filter (7), telescopic optical system (8) and ICCD(9), reflecting light converges on the ICCD focal plane after described narrow band pass filter (7) and telescopic optical system (8), gathers the remote sensing images information that the signal that converges can obtain turbulent flow.
3. imaging system according to claim 1 and 2, it is characterized in that, pulse laser emitter system (1) comprises laser instrument (2), transmitter-telescope system (3) and frosted glass (4), the exploring laser light of laser instrument (2) emission is after this transmitter-telescope system (3) expands, incide on the frosted glass (4), this frosted glass (4) is with the laser homogenising, to incide in the oceanic turbulence.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788678A (en) * | 2012-07-19 | 2012-11-21 | 华中科技大学 | Oceanic turbulence parameter non-contact measuring method and system |
| CN104568378A (en) * | 2014-12-31 | 2015-04-29 | 中国科学院南海海洋研究所 | Oceanic turbulence fixed point mixer and using method thereof |
| CN116402722A (en) * | 2023-05-29 | 2023-07-07 | 新奥特(南京)视频技术有限公司 | Video image turbulence suppression processing method and device and video processing equipment |
-
2012
- 2012-07-19 CN CN 201220351528 patent/CN202693258U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788678A (en) * | 2012-07-19 | 2012-11-21 | 华中科技大学 | Oceanic turbulence parameter non-contact measuring method and system |
| CN102788678B (en) * | 2012-07-19 | 2015-01-28 | 华中科技大学 | Oceanic turbulence parameter non-contact measuring method and system |
| CN104568378A (en) * | 2014-12-31 | 2015-04-29 | 中国科学院南海海洋研究所 | Oceanic turbulence fixed point mixer and using method thereof |
| CN104568378B (en) * | 2014-12-31 | 2017-05-03 | 中国科学院南海海洋研究所 | Oceanic turbulence fixed point mixer and using method thereof |
| CN116402722A (en) * | 2023-05-29 | 2023-07-07 | 新奥特(南京)视频技术有限公司 | Video image turbulence suppression processing method and device and video processing equipment |
| CN116402722B (en) * | 2023-05-29 | 2023-08-22 | 新奥特(南京)视频技术有限公司 | Video image turbulence suppression processing method and device and video processing equipment |
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