CN106997604A - A kind of each component thickness analysis method of power equipment based on X ray image - Google Patents
A kind of each component thickness analysis method of power equipment based on X ray image Download PDFInfo
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- CN106997604A CN106997604A CN201710240100.5A CN201710240100A CN106997604A CN 106997604 A CN106997604 A CN 106997604A CN 201710240100 A CN201710240100 A CN 201710240100A CN 106997604 A CN106997604 A CN 106997604A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The application is related to technical field of electric power, and in particular to a kind of each component thickness analysis method of power equipment based on X ray image.X-ray imaging plate acquired image is plane picture, the relative position between all parts can only be reflected, can not be differentiated for the thickness of part, due to the difference of picture shooting angle, each station diagram picture has overlapping, is difficult to differentiate for the position relationship of overlapping part.The application provides a kind of each component thickness analysis method of power equipment based on X ray image：The image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；Image is pre-processed；Treated image is labeled；Segmentation figure picture；Calculate the gross thickness that X-ray passes through equipment；Calculate the thickness and all parts thickness corresponding to the color of each in image.By colour system distribution map, the thickness distribution of part in picture is most clearly shown in picture with different colors, the analysis work to image provides new foundation.
Description
Technical field
The application is related to technical field of electric power, and in particular to a kind of each part of power equipment based on X ray image
Thickness analysis method.
Background technology
During X-ray detection, X-ray passes through measuring samples, then forms one on X-ray image intensifier again
The X-ray figure of amplification.It is power equipment event as X-ray non-destructive testing technology is commonly used in power equipment Non-Destructive Testing
Hinder service work and provide extremely advantageous detection means, the technology can quickly fault point and fault type, significantly
Shorten the maintenance time of power equipment.Now, power equipment X-ray non-destructive testing technology starts to develop to intelligent direction,
Namely the automatic detection of power equipment is realized by robot technology and computer technology.Identification for radioscopic image is real
Existing X-ray intellectualized detection key technology, because fault type is numerous, trouble location is inconsistent, the autonomous detection technique hair of X-ray
Postpone slow.Image recognition refers to that pictorial stimulus acts on sense organ, people recognize it be a certain figure that experience is crossed mistake
Journey, also makes image re-recognize.In image recognition, there should be the information for entering sense organ at that time, also to there is the information stored in memory.
The process being only compared by the information of storage with current information, could realize and image is re-recognized.Image is known
Autonomous judgement and positioning of the development of other technology to radioscopic image failure provide strong technical support.
But, X-ray imaging plate acquired image is plane picture, can only reflect the relative position between all parts
Put, can not be differentiated for the thickness of part, due to the difference of picture shooting angle, each station diagram picture have it is overlapping, for overlapping
The position relationship at position is difficult to differentiate.
The content of the invention
It is above-mentioned due to the difference of picture shooting angle the invention aims to solve, each station diagram picture have it is overlapping,
It is difficult to differentiate for the position relationship of overlapping part, it is impossible to the problem of differentiating power equipment component thickness.
Therefore, the embodiments of the invention provide following technical scheme：A kind of each part of power equipment based on X ray image
Thickness analysis method, the analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) image is pre-processed；
(3) pixel gray level is calculated；
(4) segmentation figure picture；
(5) gross thickness that X-ray passes through equipment is calculated；
(6) thickness and all parts thickness corresponding to the color of each in image are calculated.
Alternatively, the analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) noise filtering is carried out to image and gray processing is handled；
(3) the gray scale G of pixel in gray level image is expressed as a percentage, 0% represents white, and 100% represents black；
(4) segmentation figure picture, depicts the profile in gray scale identical region, the gray areas such as divides, obtains each area grayscale
Value G and maximum gradation value GmaxRatio, obtain gray percentage M；
(5) according to attenuation law of X-ray intensity when through object, transmitted intensity and gray percentage M relation, ask
Obtain the gross thickness that X-ray passes through equipment；
(6) by red, orange, yellow, green, blue, blue, purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray scale
Percentage generates colour system distribution map into one-to-one relation, and by corresponding color according to ready-portioned image in step (4),
Calculate the thickness corresponding to the color of each in image and annotate out corresponding component thickness in the picture.
Alternatively, attenuation law formula is in the step (5)：
I in formula0It is respectively the X-ray intensity before and after X-ray passes through object, μ with ImInhaled by the quality of ray through material
Coefficient is received, ρ is passed through the density of material by ray, and d is passed through the gross thickness of equipment by ray, and k is correction factor.
Alternatively, transmitted intensity I and gray percentage M relation are in the step (5)：
I=I0(1-M) (2)
The formula (2) substitutes into formula (1) and can obtained
The gross thickness that X-ray passes through equipment can be tried to achieve.
Alternatively, the correction factor k can substitute into formula (3) by measuring the gross thickness d of corresponding device in image, instead
Solve correction factor k.
Alternatively, the X-ray intensity can change with transmission range, when the position of part in image is not same
During plane, it can be drawn according to the propagation law formula of X-ray.
Alternatively, the propagation law formula of the X-ray is：
In formula, R1And R0For irradiation current point to the distance of X-ray emission point, I1And I0For the X-ray at correspondence point of irradiation
Intensity.
Technical scheme provided in an embodiment of the present invention includes following beneficial effect：The present invention is by gray-scale map to being set in image
Standby gross thickness size is calculated, and by colour system distribution map, by the thickness distribution of part in picture with different colors
It is most clearly shown in picture, the analysis work to image provides new foundation.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it should be apparent that, for those of ordinary skills, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is each component thickness analysis method schematic flow sheet of power equipment in the embodiment of the present invention.
Embodiment
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, can also obtain other accompanying drawings according to these accompanying drawings.
Radial energy, which penetrates the material that can not penetrate of naked eyes, makes light reaching the film, when X-ray or r radiation exposure films, and general
Thang-kng line is the same, and the silver halide in film emulsion layer can be made to produce latent image, because the material of different densities is to the absorption system of ray
Number is different, and difference will also be produced by being irradiated to the ray energy of film everywhere, just can be black everywhere according to the egative film after darkroom disposal
Difference is spent to differentiate defect.
Below by embodiment, and with reference to accompanying drawing, the technical scheme to the application is described in further detail.
Embodiment one
Referring to Fig. 1, the application provides a kind of each component thickness analysis method of power equipment based on X ray image, described
Analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) image is pre-processed；
(3) pixel gray level is calculated；
(4) segmentation figure picture；
(5) gross thickness that X-ray passes through equipment is calculated；
(6) thickness and all parts thickness corresponding to the color of each in image are calculated.
The application specific work process is as follows：Computer is received after the image that X-ray digital imagery plate is obtained, and judges image
Whether quality meets requirement；Image is pre-processed, picture noise is filtered, while carrying out gray processing processing to image；Calculate
The gray scale of pixel；Segmentation figure picture, the gray areas such as divides according to gradation of image；Datum plane is set in the picture；Calculate base
Directrix plane correction factor k；Figure layer is divided according to the spatial distribution of part in image；Calculate each figure layer and datum plane apart from R；
Calculate the transmitted intensity I for being distributed in each figure layer0；Calculate each figure layer component thickness；Distribution color is simultaneously shown.
Embodiment two
Referring to Fig. 1, the application provides a kind of each component thickness analysis method of power equipment based on X ray image, described
Analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) noise filtering is carried out to image and gray processing is handled；
(3) the gray scale G of pixel in gray level image is expressed as a percentage, 0% represents white, and 100% represents black；
(4) segmentation figure picture, depicts the profile in gray scale identical region, the gray areas such as divides, obtains each area grayscale
Value G and maximum gradation value GmaxRatio, obtain gray percentage M；
(5) according to attenuation law of X-ray intensity when through object, transmitted intensity and gray percentage M relation, ask
Obtain the gross thickness that X-ray passes through equipment；
(6) by red, orange, yellow, green, blue, blue, purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray scale
Percentage generates colour system distribution map into one-to-one relation, and by corresponding color according to ready-portioned image in step (4),
Calculate the thickness corresponding to the color of each in image and annotate out corresponding component thickness in the picture.
The application specific work process is as follows：Computer is received after the image that X-ray digital imagery plate is obtained, and judges image
Whether quality meets requirement；Image is pre-processed, picture noise is filtered, while carrying out gray processing processing to image；Calculate
The gray scale of pixel, the gray scale G of pixel in gray level image is expressed as a percentage, and 0% represents white, and 100% represents black；Point
Image is cut, the profile in gray scale identical region is depicted, the gray areas such as divides, obtains each area grayscale value G and maximum gray scale
Value GmaxRatio, obtain gray percentage M；Datum plane is set in the picture；Calculating benchmark plane correction factor k；According to figure
The spatial distribution of part divides figure layer as in；Calculate each figure layer and datum plane apart from R；Calculate the ray for being distributed in each figure layer
Intensity I0；Calculate each figure layer component thickness；Distribution color is simultaneously shown.
Embodiment three
Referring to Fig. 1, the application provides a kind of each component thickness analysis method of power equipment based on X ray image, described
Analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) noise filtering is carried out to image and gray processing is handled；
(3) the gray scale G of pixel in gray level image is expressed as a percentage, 0% represents white, and 100% represents black；
(4) segmentation figure picture, depicts the profile in gray scale identical region, the gray areas such as divides, obtains each area grayscale
Value G and maximum gradation value GmaxRatio, obtain gray percentage M；
(5) the attenuation law formula according to X-ray intensity when through object：
I in formula0It is respectively the X-ray intensity before and after X-ray passes through object, μ with ImInhaled by the quality of ray through material
Coefficient is received, ρ is passed through the density of material by ray, and d is passed through the gross thickness of equipment by ray, and k is correction factor；
According to transmitted intensity I and gray percentage M relation：
I=I0(1-M) (2)
The formula (2) substitutes into formula (1) and can obtained
The gross thickness that X-ray passes through equipment can be tried to achieve.
(6) by red, orange, yellow, green, blue, blue, purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray scale
Percentage generates colour system distribution map into one-to-one relation, and by corresponding color according to ready-portioned image in step (4),
Calculate the thickness corresponding to the color of each in image and annotate out corresponding component thickness in the picture.
The application specific work process is as follows：Computer is received after the image that X-ray digital imagery plate is obtained, and judges image
Whether quality meets requirement；Image is pre-processed, picture noise is filtered, while carrying out gray processing processing to image；Calculate
The gray scale of pixel, the gray scale G of pixel in gray level image is expressed as a percentage, and 0% represents white, and 100% represents black；Point
Image is cut, the profile in gray scale identical region is depicted, the gray areas such as divides, obtains each area grayscale value G and maximum gray scale
Value GmaxRatio, obtain gray percentage M；Try to achieve the gross thickness that X-ray passes through equipment；Datum plane is set in the picture；
Calculating benchmark plane correction factor k；Figure layer is divided according to the spatial distribution of part in image；Calculate each figure layer and datum plane
Apart from R；Calculate the transmitted intensity I for being distributed in each figure layer0；Calculate each figure layer component thickness；Distribution color is simultaneously shown.
Example IV
Referring to Fig. 1, the application provides a kind of each component thickness analysis method of power equipment based on X ray image, described
Analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) noise filtering is carried out to image and gray processing is handled；
(3) the gray scale G of pixel in gray level image is expressed as a percentage, 0% represents white, and 100% represents black；
(4) segmentation figure picture, depicts the profile in gray scale identical region, the gray areas such as divides, obtains each area grayscale
Value G and maximum gradation value GmaxRatio, obtain gray percentage M；
(5) the attenuation law formula according to X-ray intensity when through object：
I in formula0It is respectively the X-ray intensity before and after X-ray passes through object, μ with ImInhaled by the quality of ray through material
Coefficient is received, ρ is passed through the density of material by ray, and d is passed through the gross thickness of equipment by ray, and k is correction factor；
According to transmitted intensity I and gray percentage M relation：
I=I0(1-M) (2)
The formula (2) substitutes into formula (1) and can obtained
The gross thickness that X-ray passes through equipment can be tried to achieve.
(6) by red, orange, yellow, green, blue, blue, purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray scale
Percentage generates colour system distribution map into one-to-one relation, and by corresponding color according to ready-portioned image in step (4),
Calculate the thickness corresponding to the color of each in image and annotate out corresponding component thickness in the picture.
Alternatively, the correction factor k can substitute into formula (3) by measuring the gross thickness d of corresponding device in image, instead
Solve correction factor k.
Alternatively, the X-ray intensity can change with transmission range, when the position of part in image is not same
During plane, it can be drawn according to the propagation law formula of X-ray；
In formula, R1And R0For irradiation current point to the distance of X-ray emission point, I1And I0For the X-ray at correspondence point of irradiation
Intensity.
The application specific work process is as follows：Computer is received after the image that X-ray digital imagery plate is obtained, and judges image
Whether quality meets requirement；Image is pre-processed, picture noise is filtered, while carrying out gray processing processing to image；Calculate
The gray scale of pixel, the gray scale G of pixel in gray level image is expressed as a percentage, and 0% represents white, and 100% represents black；Point
Image is cut, the profile in gray scale identical region is depicted, the gray areas such as divides, obtains each area grayscale value G and maximum gray scale
Value GmaxRatio, obtain gray percentage M；Try to achieve the gross thickness that X-ray passes through equipment；By it is red, orange, yellow, green, blue or green, blue,
Purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray percentage into one-to-one relation, and will correspondence
Color generate colour system distribution map according to ready-portioned image, calculate thickness corresponding to the color of each in image and in image
It is middle to annotate out corresponding component thickness.
Described above is only the embodiment of the embodiment of the present invention, is made skilled artisans appreciate that or realizing
The present invention.A variety of modifications to these embodiments will be apparent to one skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty
Consistent most wide scope.
It should be appreciated that the content that the application is not limited to be described above and is shown in the drawings, and can
To carry out various modifications and changes without departing from the scope.Scope of the present application is only limited by appended claim.
Claims (7)
1. a kind of each component thickness analysis method of power equipment based on X ray image, it is characterised in that the analysis method bag
Include following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) image is pre-processed；
(3) pixel gray level is calculated；
(4) segmentation figure picture；
(5) gross thickness that X-ray passes through equipment is calculated；
(6) thickness and all parts thickness corresponding to the color of each in image are calculated.
2. analysis method as claimed in claim 1, it is characterised in that the analysis method comprises the following steps：
(1) image that X-ray digital imagery plate is obtained is received, judges whether picture quality meets requirement；
(2) noise filtering is carried out to image and gray processing is handled；
(3) the gray scale G of pixel in gray level image is expressed as a percentage, 0% represents white, and 100% represents black；
(4) segmentation figure picture, depicts the profile in gray scale identical region, the gray areas such as divides, obtain each area grayscale value G with
Maximum gradation value GmaxRatio, obtain gray percentage M；
(5) according to attenuation law of X-ray intensity when through object, transmitted intensity and gray percentage M relation, X is tried to achieve
Ray passes through the gross thickness of equipment；
(6) by red, orange, yellow, green, blue, blue, purple, seven kinds of colour systems are divided into 100 kinds of colors according to arrangement, by color and gray scale percentage
Than generating colour system distribution map according to ready-portioned image in step (4) into one-to-one relation, and by corresponding color, calculate
Go out the thickness corresponding to the color of each in image and annotate out corresponding component thickness in the picture.
3. analysis method as claimed in claim 2, it is characterised in that attenuation law formula is in the step (5)：
I in formula0It is respectively the X-ray intensity before and after X-ray passes through object, μ with ImThe mass absorption system of material is passed through by ray
Number, ρ is passed through the density of material by ray, and d is passed through the gross thickness of equipment by ray, and k is correction factor.
4. analysis method as claimed in claim 2, it is characterised in that transmitted intensity I and gray percentage in the step (5)
M relation is：
I=I0(1-M) (2)
The formula (2) substitutes into formula (1) and can obtained
The gross thickness that X-ray passes through equipment can be tried to achieve.
5. analysis method as described in claim 3, it is characterised in that the correction factor k can be by measuring in image
The gross thickness d of corresponding device substitutes into formula (3), counter to solve correction factor k.
6. analysis method as claimed in claim 3, it is characterised in that the X-ray intensity can become with transmission range
Change, when the position of part in image is not in same plane, can be drawn according to the propagation law formula of X-ray.
7. analysis method as claimed in claim 6, it is characterised in that the propagation law formula of the X-ray is：
In formula, R1And R0For irradiation current point to the distance of X-ray emission point, I1And I0For the X-ray intensity at correspondence point of irradiation.
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Cited By (1)
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| CN113376185A (en) * | 2021-04-28 | 2021-09-10 | 无锡宝通智能物联科技有限公司 | X-ray-based real-time online monitoring method for thickness of conveying belt |
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Application publication date: 20170801 |