CN206906245U - A kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle - Google Patents
A kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle Download PDFInfo
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Abstract
The utility model provides a kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle, it is characterised in that including：One word laser generator, high speed synchroniser, image rectification mark, Digital Image Processor and a camera；High speed synchroniser is according to prefixed time interval, a word laser generator is controlled to send light beam, camera is controlled to carry out image taking to region to be measured simultaneously, the light beam that a word laser generator is sent is imaged after the raindrop refraction in region to be measured in the image of camera shooting；Camera shoots predetermined number group image, and the image that Digital Image Processor is shot to camera is analyzed, and obtains Regional Rainfall uniformity spatial distribution map.The device is not influenceed by human factor and apparatus factor, simultaneously as the light beam that a word laser generator is sent is on ground, is not influenceed by orographic factor, and the rainfall uniformity distribution results of measurement are more accurate.
Description
Technical field
Rain making parametric measurement or sprinkling irrigation equipment parametric measurement technical field are the utility model is related to, more particularly to it is a kind of
Regional Rainfall uniformity measurement apparatus based on laser refraction principle.
Background technology
The method of the current measurement rainfall uniformity mainly has following several：One kind is in designated area using multiple rainfall gauges
It is interior to be laid according to certain form, the rainfall uniformity is converted after determining a period of time, the following spray being such as widely used at present is artificial
Rainer.This kind of rainfall measurement apparatus is to combine to be formed by multiple different flow section shower nozzles, can simulate some strength and
The rainfall of the uniformity, the rainfall region that different shower nozzles is formed is circle, but circle when different height or sustained height
Intensity distribution in domain has differences, therefore the degree of accuracy of measurement result is low.Another measuring method is to use laser raindrop size distribution
Instrument is to specifying the raindrop distribution in zonule to measure.
For above two prior art, some drawbacks be present.First way is people due to udometric installation position
For setting, therefore there is larger subjective factor in whole device in layout, and udometric control position just to the uniformity
Calculating has considerable influence, therefore, measurement data can be caused inaccurate.Moreover, this method is difficult measure different height position
The rainfall uniformity, be only capable of the droplet size distribution for specific plane and measure.Simultaneously using in continuous mode during such method
Trial zone place is taken, often needs to close rain controller after the completion of measure, lays pilot region etc. again, increase experiment process
In uncertainty, influence test efficiency.Another method by measuring principle due to being limited, and the region of measure is very small, typically
Only it is used for determining the composition of raindrop diameter, it is difficult to realize the measurement of the rainfall uniformity in large area.
In summary, the device of the uniformity of existing measurement rainfall, due to factors such as measuring apparatus and measuring principles
Influence, it is difficult to quick, accurate measurement is carried out to the droplet size distribution of Different Plane.
The content of the invention
The utility model provides a kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle, existing to solve
In due to factors such as measuring apparatus and measuring principles, it is difficult to quick, accurate measurement is carried out to the droplet size distribution of Different Plane.
In order to solve the above problems, the utility model discloses a kind of Regional Rainfall uniformity based on laser refraction principle
Measurement apparatus, described device include：One word laser generator, high speed synchroniser, image rectification mark, Digital Image Processor with
An and camera；The one word laser generator horizontal aligument region to be measured is set, and the camera is located at the area to be measured
Domain rear and the word laser generator are oppositely arranged and close to the regions to be measured；The high speed synchroniser respectively with institute
A word laser generator is stated to connect with camera；Described image calibration mark is arranged in the shooting visual field of the camera, and
And record has the distance between each image rectification mark and position coordinates in the Digital Image Processor；The high speed synchroniser
According to prefixed time interval, the word laser generator is controlled to send light beam, while control the camera to described to be measured
Region carry out image taking, the light beam that the word laser generator is sent through in the region to be measured raindrop refraction after,
It is imaged in the image of the camera shooting；The camera shoots predetermined number group image, the Digital Image Processor pair
The image of the camera shooting is analyzed, and obtains Regional Rainfall uniformity spatial distribution map.
Preferably, the word laser generator light beam that lights out is horizontal through the region to be measured, the light beam
Feux rouges or green glow.
Preferably, the distance between the word laser generator and the region to be measured, equal to the camera and institute
State the vertical range between region to be measured.
Preferably, the Digital Image Processor includes：Correct unit, non-linear enhancement unit, hot spot extraction unit, folded
Add unit and spatial distribution map generation unit；The correction unit carries out geometric correction respectively to each image, after obtaining correction
Image；The non-linear enhancement unit carries out non-linear enhancing processing, obtains enhanced figure to each image after correction
Picture；The hot spot extraction unit extracts hot spot corresponding to raindrop image from each enhanced image, and each hot spot is corresponding one
Point position；Whole hot spots of extraction are overlapped by the superpositing unit, obtain identical region to be measured, the Bright folding of same point position
Number；Identical region to be measured that the spatial distribution map generation unit obtains according to superposition, the Bright folding number of same point position,
Formation zone rainfall uniformity spatial distribution map.
Preferably, the Digital Image Processor also includes：Binary conversion treatment unit；The binary conversion treatment unit will increase
Image after strong carries out binary conversion treatment, so that the hot spot extraction unit extracts raindrop figure from the image after binary conversion treatment
The hot spot as corresponding to.
Compared with prior art, the utility model has advantages below：
The Regional Rainfall uniformity measurement apparatus based on laser refraction principle that the utility model embodiment provides, by a word
The beam level that laser generator is sent passes through region to be measured, and high speed synchroniser connects with a word laser generator and camera respectively
Connect；High speed synchroniser is used for according to prefixed time interval, and one word laser generator of control sends light beam, while controls camera pair
Region to be measured carries out image taking, and the light beam that a word laser generator is sent is being photographed after the raindrop refraction in region to be measured
It is imaged in the image of device shooting；Camera shoots predetermined number group image, the image that Digital Image Processor is shot to camera
Analyzed, obtain Regional Rainfall uniformity spatial distribution map.It can be seen that by provided by the utility model former based on laser refraction
The Regional Rainfall uniformity measurement apparatus of reason, image based on the refraction photogenerated to raindrop carries out corresponding graphical analysis can be with
The Regional Rainfall uniformity is accurately measured, and this method is not influenceed by human factor and apparatus factor, simultaneously as a word
The light beam that laser generator is sent is on ground, is not influenceed by orographic factor, the rainfall uniformity distribution results of measurement
It is more accurate.Moreover, the device may also adapt to the droplet size distribution measurement in Different Plane or inclined-plane.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, below by the utility model embodiment
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle of the utility model embodiment
Structured flowchart；
Fig. 2 is the structured flowchart of the Digital Image Processor of the utility model embodiment two；
Light path schematic diagram when Fig. 3 is laser irradiation raindrop.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that described embodiment is the utility model part of the embodiment, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment one
Reference picture 1, show that a kind of Regional Rainfall based on laser refraction principle of the utility model embodiment one is uniform
Spend the structured flowchart of measurement apparatus.
The Regional Rainfall uniformity measurement apparatus based on laser refraction principle of the utility model embodiment includes：One word swashs
Optical generator 101, high speed synchroniser 102, image rectification mark 103, Digital Image Processor 104 and a camera 105.
The horizontal aligument of one word laser generator 101 region 106 to be measured is set, and a word laser generator lights out light beam water
Flat through region to be measured, camera 105 is arranged on the rear of a word laser generator 101, is set relatively with a word laser generator 101
Put and be connected respectively with a word laser generator 101 and camera 105 close to region to be measured, high speed synchroniser 102；Image calibration
Positive mark 103 is arranged in the shooting visual field of camera 105, on four angles in region to be measured, and Digital Image Processor
In record the distance between each image rectification mark and position coordinates.It is feux rouges or green that one word laser generator, which sends light beam,
Light.
Assuming that region to be measured includes tetra- sides of A, B, C and D, A and D is relative edge, before a word laser generator is arranged on A sides
Side, camera 105 are then arranged on D sides rear, i.e. a word laser generator is oppositely arranged with camera, specifically, camera 105
Which specific position on D sides is arranged on, can be configured according to the actual requirements by those skilled in the art, can ensure to photograph
Device can receive the refraction light of raindrop in region to be measured.
High speed synchroniser 102 sends light beam, controlled simultaneously according to prefixed time interval, one word laser generator 101 of control
Camera 105 carries out image taking to region to be measured, and the light beam that a word laser generator 101 is sent is through the raindrop in region to be measured
After refraction, it is imaged in the image that camera 105 is shot；Camera 105 shoots predetermined number group image, Digital Image Processor
The image that 104 pairs of cameras 105 are shot is analyzed, and obtains Regional Rainfall uniformity spatial distribution map.
Wherein, camera can be high speed high-definition camera, and camera is when carrying out image taking, every between preset time
Every image of the extraction single frames picture as captured by from screen.
It should be noted that a word laser generator is a kind of convenient and practical positioning instrument.It can be widely used for measurement drop
The positioning instrument of the rain uniformity or other measurement process.
A wordline laser device svelteness, it is compact, it is easily installed, accurate location technology can be provided for the utility model,
It can be arranged on the horizontal or vertical face using machinery, there is provided a visible straight line laser so that entirely rainfall is being measured
During produce a visible, non-contacting position line, the advantages of facilitating production operation and improve production efficiency, and laser
Line can arbitrarily finely tune in three dimensions, reach best use effect.The glancing incidence beam thickness of laser is 2 to 6 millimeters
Light, therefore, the thickness in region to be measured is 2 to 6 millimeters.
It should be noted that those skilled in the art can control a word to swash default high speed synchroniser according to actual conditions
Optical generator is luminous and the image temporal interval of camera shooting is selected, prefixed time interval can be arranged to 5ms,
6ms, 10ms etc., are not specifically limited in the utility model embodiment to this.
The time interval is that laser is sent to the time completed in raindrop needed for refraction, the time interval and a word laser
Generator is relevant with treating interval between side region and raindrop size to be measured.
While high speed synchroniser controls a word laser generator to send light beam according to prefixed time interval, due at a high speed
Synchronizer is connected with a word laser generator and camera respectively, while a word laser generator sends light beam, photography
Device can be shot to region to be measured, and generate image, and the light beam warp that the image generated sends for a word laser generator
Cross image captured after raindrop reflect.
It should be noted that those skilled in the art can set according to actual conditions to the quantity of image, in order to
So that the accuracy of measurement data, can shoot 3 groups, 4 groups or 5 groups etc., this is not specifically limited.Picture in every group can
Think any amounts such as 5,6 or 8.
The multiple series of images collected to camera, is analyzed by Digital Image Processor, you can obtains Regional Rainfall
Uniformity spatial distribution map.When being analyzed, firstly, since may be deformed in image shoot process, it is therefore desirable to foundation
Image rectification mark is corrected to image；Secondly, in a sub-picture, some seems the relative raindrop of camera closely
Picture, and some is then the picture of the relative remote raindrop of camera, it is unintelligible to have a picture of part raindrop, therefore, needs
Non-linear enhancing processing is carried out to the image after correction, reduce the authenticity of each raindrop picture.Again, image was carried out at early stage
, it is necessary to be that raindrop image extracts to the hot spot in each image after reason, and information superposition will be carried out with group image, obtained same
There is the number of raindrop in region same point position.Finally, the stack result of multiple series of images is analyzed, it is uniform finally gives rainfall
Spend spatial distribution map.
The Regional Rainfall uniformity measurement apparatus based on laser refraction principle that the utility model embodiment provides, by a word
The light beam that laser generator is sent passes through region to be measured, and high speed synchroniser connects with a word laser generator and camera respectively
Connect；High speed synchroniser is used for according to prefixed time interval, and one word laser generator of control sends light beam, while controls camera pair
Region to be measured carries out image taking, and the light beam that a word laser generator is sent is being photographed after the raindrop refraction in region to be measured
It is imaged in the image of device shooting；Camera shoots predetermined number group image, the image that Digital Image Processor is shot to camera
Analyzed, obtain Regional Rainfall uniformity spatial distribution map.It can be seen that by provided by the utility model former based on laser refraction
The Regional Rainfall uniformity measurement apparatus of reason, image based on the refraction photogenerated to raindrop carries out corresponding graphical analysis can be with
The Regional Rainfall uniformity is accurately measured, and this method is not influenceed by human factor and apparatus factor, the rainfall of measurement is equal
Evenness distribution results are more accurate, and moreover, the device may also adapt to the droplet size distribution measurement in Different Plane.
Embodiment two
Still reference picture 1, to the rainfall uniformity measurement apparatus based on laser refraction principle of the utility model embodiment
Illustrate.
The Regional Rainfall uniformity measurement apparatus based on laser refraction principle that the utility model embodiment provides includes：One
Word laser generator 101, high speed synchroniser 102, image rectification mark 103, Digital Image Processor 104 and a camera
105；The horizontal aligument of one word laser generator 101 region 106 to be measured is set, and camera 105 is located at the rear of region 106 to be measured and one
Word laser generator 101 is oppositely arranged and close to region to be measured, high speed synchroniser 102 respectively with a word laser generator 101 and
Camera 105 connects；Image rectification mark 103 is arranged in the shooting visual field of camera 105, in Digital Image Processor 104
Record the distance between each image rectification mark and position coordinates.One word laser generator 101 light out light beam horizontal through
Region to be measured, light beam are feux rouges or green glow.
It should be noted that a word laser generator is a kind of convenient and practical positioning instrument.It can be widely used for measurement drop
The positioning instrument of the rain uniformity or other measurement process, image rectification mark number are three.
High speed synchroniser 102 sends light beam, controlled simultaneously according to prefixed time interval, one word laser generator 101 of control
Camera 105 carries out image taking to region to be measured, and the light beam that a word laser generator 101 is sent is through the raindrop in region to be measured
After refraction, it is imaged in the image that camera 105 is shot.
Wherein, index path during laser irradiation raindrop is as shown in Figure 3.As can be known from Fig. 3, during laser irradiation raindrop, can produce
Give birth to two secondary reflections and reflect twice, light specifically moves towards shown in Figure 3.
For more preferable shooting image, the distance between a word laser generator and region to be measured are equal to take the photograph
Vertical range between shadow device and region to be measured.
Camera 105 shoots predetermined number group image, and the image that Digital Image Processor 104 is shot to camera 105 enters
Row analysis, obtains Regional Rainfall uniformity spatial distribution map.
While high speed synchroniser controls a word laser generator to send light beam according to prefixed time interval, due at a high speed
Synchronizer is connected with a word laser generator and camera respectively, while a word laser generator sends light beam, photography
Device can be shot to region to be measured, and generate image, and the light beam warp that the image generated sends for a word laser generator
Cross image captured after raindrop reflect.
It should be noted that those skilled in the art can set according to actual conditions to the quantity of image, in order to
So that the accuracy of measurement data, can shoot any amount group image, this is not limited specifically in the utility model embodiment
System.Preferably, three groups of images are shot, and 5 images are included in every group.
The image of camera shooting can be sent to Digital Image Processor in real time by wireless network, can also be in whole
After the completion of image taking, image copy is to data and image processing device as captured by technical staff by camera.
Multiple series of images has been collected by camera, multiple series of images analyzed by Digital Image Processor, you can
Regional Rainfall uniformity spatial distribution map is obtained, distribution map generating principle is as follows：The structural representation of Digital Image Processor is such as
Shown in Fig. 2, data and image processing device 104 includes：Correct unit 1041, non-linear enhancement unit 1042, hot spot extraction unit
1043rd, superpositing unit 1044, spatial distribution map generation unit 1045 and binary conversion treatment unit 1046.Digital Image Processor
In each unit that includes be the hardware module with data-handling capacity, in the hardware module programming have computer program.
Correction unit 1041 carries out geometric correction respectively to each image, the image after being corrected.
When correction unit is corrected to image, according to the distance between pre-recorded each image rectification mark and position
Coordinate, image is corrected.
The basic skills of the geometric correction of imagery is first to establish the mathematical modeling of geometric correction, and secondly condition known to utilization is true
Rational method, geometric correction is finally carried out to image according to model.Concretely comprise the following steps the first step：Image space transformation, first,
The mapping relations established between the image picture point left side (row, column number) and the corresponding point coordinates of object space (or reference chart), solution seek mapping relations
In unknown parameter, each pixel coordinate of image is corrected according to mapping relations；Second step：Determine the gray scale of each pixel
Value.Image after being corrected by above-mentioned two step.In the utility model embodiment, when carrying out image rectification, it is necessary to
Image rectification mark is applied to, image rectification is carried out using the picture of each image rectification mark as correction reference.
By the above-mentioned means, each image in each group image is corrected, each group image after being corrected.
Non-linear enhancement unit 1042 carries out non-linear enhancing processing, obtains enhanced figure to each image after correction
Picture.
Due to the influence in the shooting process to image due to extraneous factor, cause overall partially dark, the mesh of image shot
The deficiencies of mark is low with background contrasts, texture is weak, the intensity profile of image is more concentrated, is not easy to the thin of object observing image
Section, due to above feature, image rectification is processed into prominent target image details and improvement image as enhancing is carried out to image
The Main Means of quality.
At present, the method for image enhaucament is divided into spatial processing and frequency domain handles two major classes.Spatial processing is on original image
Data operation is directly carried out, common processing method has：Linear stretch, histogram equalization and unsharp masking etc..
In addition, the method that non-linear enhancing processing is carried out to image can also be contourlet transformation, it can be any
The decomposition of any direction is realized on yardstick, the profile and Directional texture information being good in description image, in Contourlet domains
It is middle that Nonlinear Processing is carried out to low frequency sub-band coefficient and each band logical directional subband coefficient respectively, obtain enhanced figure through anti-change
Picture.
Contourlet change basic thought be initially used for each similar small echo multi-resolution decomposition seizure edge it is unusual
Point, singular point similar in position is accumulated into contour segment further according to directional information.From the tower filter construction pair of Laplce
Image Multiresolution Decomposition catches singular point, and the tower filter construction of Laplce produces a low pass of primary signal first
Sampling approaches and an error image between original image and low pass prognostic chart picture, and obtained low-pass pictures are continued to decompose
Low-pass pictures and error image to next layer.So progressively filtering obtains the Multiresolution Decomposition of image.Two-dimensional directional filters
Device is applied to the tower filter construction of Laplce and decomposed in obtained every one-level high fdrequency component, can be decomposed on any yardstick
The directional subband of 2 n power numbers is obtained, image is known high caused by decomposition by the tower filter construction of Laplce every time
Logical subband input two-dimensional directional wave filter, will gradually put unusual connection linear arrangement, so as to the profile in capture images.Two dimension
Anisotropic filter and the tower filter construction of Laplce combine to form double-deck filter bank structure, turn into turriform trend pass filtering
Device group, because the basic function of conversion contour segment form approaches original and image, therefore also referred to as discrete Contourlet becomes
Change.
Image side can be effectively maintained to the lifting of target image and background overall contrast by the above method
Edge, reduce the authenticity of raindrop imaging.
It should be noted that those skilled in the art can select nonlinear method non-to image progress according to actual conditions
Linear enhancing processing, is not specifically limited to this.
Binary conversion treatment unit 1046；Enhanced image is carried out binary conversion treatment by binary conversion treatment unit, for light
Spot extraction unit extracts hot spot corresponding to raindrop image from the image after binary conversion treatment.
Non-linear enhanced image is subjected to binary conversion treatment, wherein, image binaryzation is exactly by the pixel on image
The gray value of point is arranged to 0 or 255, that is, whole image is showed into obvious black and white effect.In binary conversion treatment unit
In the related computer program of image binaryzation can be set.
In Digital Image Processing, bianry image occupies very important status, and first, the binaryzation of image is advantageous to figure
The further processing of picture, makes image become simple, and data volume reduces, and can highlight the profile of target interested.Secondly,
The processing and analysis of bianry image are carried out, a Binary Sketch of Grey Scale Image is first had to, obtains binary image.All gray scales are more than
Or be judged as belonging to certain objects equal to the pixel of threshold value, its gray value is 255 expressions, and otherwise these pixels are excluded
Beyond object area, gray value 0, the object area of background or exception is represented.By carrying out binary conversion treatment, side to image
Just to the measurement of the measurement rainfall uniformity.
It should be noted that image binaryzation processing is optional step, can be directly to non-thread during specific implementation
Property enhancing processing after image carry out hot spot.That is, binary conversion treatment unit is optional module, in Digital Image Processor
Binary conversion treatment unit can not be included.
Hot spot extraction unit 1043 extracts hot spot corresponding to raindrop image from each enhanced image, and each hot spot is corresponding
One point position.
It should be noted that hot spot can use the method based on block and conversion, triangle corresponding to extraction raindrop image
The methods of network stereo image coding algorithm or utilization PS (Adobe Photoshop, image processing software) extraction images pair
The extraction of characteristic point.The related computer program that hot spot can be set to extract in hot spot extraction unit.
Wherein, using the image extraction method of triangular net stereo image coding algorithm, using left image as reference picture,
Characteristic point is extracted to left image, the characteristic point in figure area is linked to be Delaunay triangular nets, to the characteristic point of each extraction
The corresponding points most matched with it are found in right image, obtain the parallax of the point, parallax is all calculated to all characteristic points
After vector, it is linked to be Delaunay triangles with these characteristic points and the difference vector of all pixels is obtained by affine transformation, so
The difference of the parallax reconstruction image of right image, original right image and parallax reconstruction image is just obtained, is exactly residual image, it is necessary to compile
The object of code has the difference vector and residual image of left image, the characteristic point of left image, characteristic point.
The characteristic point extracting method of the algorithm makes full use of the edge of objects in images, is tried one's best when establishing Delaunay triangles
Physics is distinguished and treated, so when carrying out triangle affine transformation, embodies rotation, dimensions shrink and the bullet of object as far as possible
Property deformation etc..
Using the method for PS extraction images, because PS image procossings are as the important component in computer application,
Many fields play an important role, and the extraction of image are contained in image procossing, and this kind of method is easily operated.
Whole hot spots of extraction are overlapped by superpositing unit 1044, obtain identical region to be measured, the hot spot of same point position
It is superimposed number.
Whole hot spots of extraction are overlapped and hot spot can also be overlapped using PS, are obtained in same region to be measured
The number of the hot spot of same point position, facilitate follow-up processing.
Identical region to be measured that spatial distribution map generation unit 1045 obtains according to superposition, the Bright folding of same point position
Number, formation zone rainfall uniformity spatial distribution map.
The Regional Rainfall uniformity spatial distribution map of generation can characterize rainfall of the region to be measured in certain period of time point
Cloth.
The Regional Rainfall uniformity measurement apparatus based on laser refraction principle that the utility model embodiment provides, by a word
Laser generator face region to be measured is set, and high speed synchroniser is connected with a word laser generator and camera respectively；It is same at a high speed
Walk device to be used for according to prefixed time interval, one word laser generator of control sends light beam, while controls camera to region to be measured
Image taking is carried out, the light beam that a word laser generator is sent is after the raindrop refraction in region to be measured, in camera shooting
It is imaged in image；Camera shoots predetermined number group image, and the image that Digital Image Processor is shot to camera is analyzed,
Obtain Regional Rainfall uniformity spatial distribution map.It can be seen that pass through the region provided by the utility model based on laser refraction principle
Rainfall uniformity measurement apparatus, the image based on the refraction photogenerated to raindrop carry out corresponding graphical analysis and become and can accurately survey
The Regional Rainfall uniformity is measured, and the device is not influenceed by human factor and apparatus factor, the rainfall uniformity point of measurement
Cloth result is more accurate.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.For system embodiment
For, because it is substantially similar to embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
Defend oneself bright.
Above to a kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle provided by the utility model,
It is described in detail, specific case used herein is set forth to principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method and its core concept of the present utility model；Meanwhile for this area
Those skilled in the art, according to thought of the present utility model, there will be changes, comprehensive in specific embodiments and applications
Upper described, this specification content should not be construed as to limitation of the present utility model.
Algorithm and display be not inherently related to any certain computer, electronic system or miscellaneous equipment provided herein.
Various general-purpose systems can also be used together with based on above-mentioned teaching.As described above, required by constructing this kind of system
Structure be obvious.In addition, the utility model is not also directed to any certain programmed language.It should be understood that it can utilize
Various programming languages realize content of the present utility model described here, and the description done above to language-specific be in order to
Disclose preferred forms of the present utility model.
In the specification that this place provides, numerous specific details are set forth.It is it is to be appreciated, however, that of the present utility model
Embodiment can be put into practice in the case of these no details.In some instances, be not been shown in detail known method,
Structure and technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify open and help to understand one or more of each utility model aspect,
In the description to exemplary embodiment of the present utility model above, each feature of the present utility model is grouped together into sometimes
In single embodiment, figure or descriptions thereof.However, the method for the disclosure should not be construed to be intended to as follows：Want
Seek the requires of the utility model features more more than the feature being expressly recited in each claim of protection.More properly
Say, as the following claims reflect as, be in terms of utility model less than single embodiment disclosed above
All features.Therefore, it then follows thus claims of embodiment are expressly incorporated in the embodiment, wherein often
Individual claim is all used as separate embodiments of the present utility model in itself.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in this practicality newly
Within the scope of type and form different embodiments.For example, in the following claims, embodiment claimed
One of any mode can use in any combination.
All parts embodiment of the present utility model can be realized with hardware, or be transported on one or more processor
Capable software module is realized, or is realized with combinations thereof.It will be understood by those of skill in the art that it can make in practice
One in the client device according to the utility model embodiment is realized with microprocessor or digital signal processor (DSP)
The some or all functions of a little or whole parts.The utility model can be implemented for performing method as described herein
Some or all equipment or program of device (for example, computer program and computer program product).Such reality
Existing program of the present utility model can store on a computer-readable medium, or can have the shape of one or more signal
Formula.Such signal can be downloaded from internet website and obtained, and either be provided or with any other shape on carrier signal
Formula provides.
The utility model is limited it should be noted that above-described embodiment illustrates rather than to the utility model,
And those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.In right
In it is required that, any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" is not arranged
Except element or step not listed in the claims being present.Word "a" or "an" before element does not exclude the presence of more
Individual such element.The utility model can be by means of including the hardware of some different elements and by means of properly programmed
Computer is realized.In if the unit claim of equipment for drying is listed, several in these devices can be by same
One hardware branch embodies.The use of word first, second, and third does not indicate that any order.Can be by these lists
Word is construed to title.
Claims (5)
1. a kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle, it is characterised in that described device includes：
One word laser generator, high speed synchroniser, image rectification mark, Digital Image Processor and a camera；
The one word laser generator horizontal aligument region to be measured is set, and the camera is located at the region rear to be measured and institute
A word laser generator is stated to be oppositely arranged and close to the region to be measured；The high speed synchroniser respectively with the word laser
Generator connects with camera；Described image calibration mark is arranged in the shooting visual field of the camera, and the numeral
Record has the distance between each image rectification mark and position coordinates in image processor；
The high speed synchroniser controls the word laser generator to send light beam, while control institute according to prefixed time interval
State camera and image taking is carried out to the region to be measured, the light beam that the word laser generator is sent is through the region to be measured
In raindrop refraction after, the camera shooting image in be imaged；
The camera shoots predetermined number group image, and the image that the Digital Image Processor is shot to the camera is carried out
Analysis, obtains Regional Rainfall uniformity spatial distribution map.
2. device according to claim 1, it is characterised in that the word laser generator beam level that lights out is worn
The region to be measured is crossed, the light beam is feux rouges or green glow.
3. device according to claim 1, it is characterised in that between the word laser generator and the region to be measured
Distance, equal to the vertical range between the camera and the region to be measured.
4. device according to claim 1, it is characterised in that the Digital Image Processor includes：Correct unit, non-thread
Property enhancement unit, hot spot extraction unit, superpositing unit and spatial distribution map generation unit；
The correction unit carries out geometric correction respectively to each image, the image after being corrected；
The non-linear enhancement unit carries out non-linear enhancing processing, obtains enhanced image to each image after correction；
The hot spot extraction unit extracts hot spot corresponding to raindrop image from each enhanced image, and each hot spot is corresponding one
Point position；
Whole hot spots of extraction are overlapped by the superpositing unit, obtain identical region to be measured, the Bright folding of same point position
Number；
Identical region to be measured that the spatial distribution map generation unit obtains according to superposition, the Bright folding number of same point position,
Formation zone rainfall uniformity spatial distribution map.
5. device according to claim 1, it is characterised in that the Digital Image Processor also includes：Binary conversion treatment
Unit；
Enhanced image is carried out binary conversion treatment by the binary conversion treatment unit, so that hot spot extraction unit is at binaryzation
Hot spot corresponding to raindrop image is extracted in image after reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158209.XU CN206906245U (en) | 2017-02-21 | 2017-02-21 | A kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158209.XU CN206906245U (en) | 2017-02-21 | 2017-02-21 | A kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle |
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| CN206906245U true CN206906245U (en) | 2018-01-19 |
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| CN201720158209.XU Expired - Fee Related CN206906245U (en) | 2017-02-21 | 2017-02-21 | A kind of Regional Rainfall uniformity measurement apparatus based on laser refraction principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770038A (en) * | 2017-02-21 | 2017-05-31 | 中国水利水电科学研究院 | A kind of Regional Rainfall uniformity measuring system and method based on laser refraction principle |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770038A (en) * | 2017-02-21 | 2017-05-31 | 中国水利水电科学研究院 | A kind of Regional Rainfall uniformity measuring system and method based on laser refraction principle |
| CN106770038B (en) * | 2017-02-21 | 2024-02-02 | 中国水利水电科学研究院 | Regional rainfall uniformity measuring system and method based on laser refraction principle |
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