CN107957428A - One kind is based on DSP adapting to image energy decline processing method - Google Patents
One kind is based on DSP adapting to image energy decline processing method Download PDFInfo
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- CN107957428A CN107957428A CN201711228106.7A CN201711228106A CN107957428A CN 107957428 A CN107957428 A CN 107957428A CN 201711228106 A CN201711228106 A CN 201711228106A CN 107957428 A CN107957428 A CN 107957428A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/10—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being confined in a container, e.g. in a luggage X-ray scanners
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
- G01N2223/1016—X-ray
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/401—Imaging image processing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/637—Specific applications or type of materials liquid
Abstract
The invention discloses one kind based on DSP adapting to image energy decline processing method, it is related to energy-ray graphics analysis techniques field.In the present invention：The foundation of the energy projects model to fail including X-ray through liquid article energy absorption；Obtain the image data information after X-ray is projected for testing liquid；Enhancing analyzing and processing is carried out to the testing liquid radioscopic image of collection；Image analysis processing after being projected using corresponding energy-ray to testing liquid.The present invention is by establishing the energy projects model of X-ray, so that the X-ray for analyzing corresponding electron energy carries out corresponding testing liquid the energy intensity during X-ray projection；Image data information after the present invention projects testing liquid by X-ray analyzes and processes, establish corresponding decay coefficient analytic process, the detection precision of the X-ray liquid dangerous material relatively low to concentration is improved, improves the security and high efficiency of corresponding security action.
Description
Technical field
The present invention relates to energy-ray graphics analysis techniques field, more particularly to one kind to be based on DSP adapting to image energy
Fail processing method.
Background technology
, it is necessary to testing liquid is placed on X-ray projected area, according to prepare liquid during liquid hazardous material detection
Body absorbs the ability of X-ray, can interpolate that whether testing liquid is liquid dangerous material.If the concentration of liquid dangerous material is too low,
The degree of absorption of X-ray will be greatly reduced in liquid dangerous material, cause the fluctuation of liquid dangerous material absorption coefficient smaller.Prepare liquid
Volume density, which reduces, causes the reduction of testing liquid concentration factor.Testing liquid concentration factor reduces and causes testing liquid to X-ray
Absorption coefficient waving interval is minimum, if waving interval is too small, testing result will appear from misalignment, causes accurately to detect low
The drawbacks of concentration liquid dangerous material.How due to liquid dangerous material concentration reduce caused by liquid dangerous material absorbability is avoided
The defects of degeneration, improve the accuracy rate of liquid hazardous material detection, become problem to be solved.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind based on DSP adapting to image energy decline processing method, lead to
Cross and establish X-ray energy projection model, and using the processing of image energy regression analysis, so as to improve liquid hazardous material detection
Accuracy rate.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions：
The present invention provides one kind based on DSP adapting to image energy decline processing method, including X-ray is through liquid article
The foundation of the energy projects model of energy absorption decline；Including obtaining the picture number after X-ray is projected for testing liquid
It is believed that breath；Including carrying out enhancing analyzing and processing to the testing liquid radioscopic image of collection；Including using corresponding energy-ray
Image analysis processing after being projected to testing liquid.
Wherein, the energy projects model of X-ray is established, corresponding calculation process is carried out by DSP, electronic position is moved
Situation carries out data acquisition operations；The faultage image of testing liquid is obtained by X-ray；Wherein, faultage image is included continuously
Collection of illustrative plates and characteristic spectrum.
Wherein, the image data information after X-ray projection is obtained, one group of sampled pixel is chosen in the image after projection
Point, the neighbouring pixel number of analysis sampled pixel point, establishes corresponding background area pixels point data set.
Wherein, the image of collection carries out enhancing analyzing and processing, analyzing liquid article area grayscale data and background area ash
Degrees of data, is analyzed to the gradation data after testing liquid X image enhancement processings.
Wherein, testing liquid is projected using energy-ray, draws corresponding projects images；Analyze corresponding energy X
Initial energy of electron on ray；Analyzed and processed to projecting the decay of the electron energy on testing liquid；It is dangerous to liquid
The decay coefficient of product energy is analyzed and processed accordingly.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is by establishing the energy projects model of X-ray, so as to analyze the X-ray pair of corresponding electron energy
Corresponding testing liquid carries out the energy intensity during X-ray projection；
2nd, the image data information analyzing and processing after the present invention projects testing liquid by X-ray, is established corresponding
Decay coefficient analytic process, improve the detection precisions of the X-ray liquid dangerous material relatively low to concentration, improve corresponding
The security and high efficiency of security action.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Specific embodiment one：
The present invention is based on DSP adapting to image energy decline processing method to be a kind of, including X-ray is through liquid article energy
Amount absorbs the foundation of the energy projects model of decline；Including obtaining the view data after X-ray is projected for testing liquid
Information；Including carrying out enhancing analyzing and processing to the testing liquid radioscopic image of collection；Including using corresponding energy-ray pair
Testing liquid projected after image analysis processing.
Further, the energy projects model of X-ray is established, corresponding calculation process is carried out by DSP, to electronic position
Situation of movement carries out data acquisition operations；The faultage image of testing liquid is obtained by X-ray；Wherein, faultage image includes
Precession diagram and characteristic spectrum.
Further, the image data information after X-ray projection is obtained, one group of sample is chosen in the image after projection
Pixel, the neighbouring pixel number of analysis sampled pixel point, establishes corresponding background area pixels point data set.
Further, the image of collection carries out enhancing analyzing and processing, analyzing liquid article area grayscale data and background area
Domain gradation data, is analyzed to the gradation data after testing liquid X image enhancement processings.
Further, testing liquid is projected using energy-ray, draws corresponding projects images；Analysis is corresponding
Initial energy of electron on Energy X-ray；Analyzed and processed to projecting the decay of the electron energy on testing liquid；To liquid
The decay coefficient of state dangerous material energy is analyzed and processed accordingly.
Specific embodiment two：
The energy projects model of X-ray is established, detection method of X-ray is that one kind obtains testing liquid by X-ray radiation
Primary data, the method that computing is carried out with DSP.Data extraction is carried out according to the stronger electronic position situation of movement of energy ratio.
The faultage image of testing liquid can be obtained by X-ray.The collection of illustrative plates of X-ray can be divided into precession diagram and characteristic spectrum two
A different classification.Precession diagram is used for describing the situation of electronics continuous position movement, and characteristic spectrum is used for describing a certain spy
The distribution situation of different moving electron.
The energy for setting the X-ray projected to testing liquid is m0(F), the thickness of testing liquid is M, in X-ray
Electron motion after energy be m (F), then can obtain following formula：
M (F)=m0(F)·ep·ε·M (1)
Wherein, ε=εpe(A4,F3)+A·εnsc(F)=10A4/F3- 0.665A is the area of testing liquid tomography, p
=PBσ/B is to specify X-ray number of electrons in area of space.
Formula (2) can be obtained according to formula (1)：
Above formula can be obtained according to X-ray theory：
According to two above formula, can obtain with following X-ray correlation formulas：
Wherein, the absorbability parameter of testing liquid is v, and density is σ, and the sequence number of electronics is A, the energy parameter of X-ray
It is F.
Assuming that testing liquid is projected using the X-ray of different-energy, then following X ray energies can be obtained
Project model：
In formula, m0(F) be X-ray initial electron energy parameter, m (F) is after X-ray projects testing liquid
Electron energy parameter, ν F be during the ray of a certain energy projects testing liquid electron energy decay ginseng
Number.
By set forth above, X-ray energy projection model can be obtained, for describing the X-ray of different electron energies
Energy intensity during X-ray projection is carried out to different testing liquids.
Specific embodiment three：
By above-mentioned X-ray by above-mentioned X-ray energy project model, can obtain X-ray for testing liquid into
Image after row projection, randomly selects one group of pixel as sample：
It is 2 (n-1) × 2 (n-1) that then its neighborhood pixels, which is counted out,.Assuming that n=0, then the pixel randomly selected closes on
Pixel is represented with (y, z).Background area needs to choose 8 pixels one background area pixels point data set of composition.
Assuming that the value of n is known, then the adjacent pixel gray level in testing liquid radioscopic image pixel midpoint
Ratio can be calculated with following formula：
Wherein,It is to choose sample adjacent pixels point gray variance value；
Wherein,It is background area gray variance value, R is P2In include close on area
Domain pixel quantity.
Enhancing processing is carried out to the testing liquid radioscopic image of collection, then liquid dangerous material area grayscale value and the back of the body
The ratio of scene area gray scale value is Dyz, sets and the gray level ratio D' after enhancing processing is carried out to testing liquid radioscopic image
The symbol of yz and initial gray ratio Dyz is identical, and needs to meet following conditions：
0≤[Dyz] ＜ [D, yz]≤1 (2)
Assuming that replacing Dyz with D'yz, then following formula can be obtained：
It can be learnt according to radioscopic image correlation theory, it is assumed thatThen judge testing liquid area pixel gray scale
Value is more than background area pixels gray value, then after carrying out above-mentioned image enhancement processing, the increase of testing liquid grey scale pixel value；It is false
IfThen judge that testing liquid area pixel gray value is less than background area pixels gray value, then carry out above-mentioned image
After enhancing processing, testing liquid grey scale pixel value reduces.By the above-mentioned means, testing liquid region and the back of the body can be effectively improved
The intensity contrast of scene area.
The gray scale difference value of radioscopic image testing liquid region and background area can be calculated using following formula：
Testing liquid is projected respectively using high-energy rays and low energy rays, it is different that two width can be obtained
Image, the primary power for setting electronics on high-energy X-rays is ehigh, projecting the decay of the electron energy on testing liquid is
e′high, the primary power of electronics is e on low-energy X-raylow, the electron energy decay projected on testing liquid is el′ow,
So liquid dangerous material energy decay coefficient λ can be calculated using following formula:
Testing liquid energy decay coefficient and liquid dangerous material standard energy decay coefficient are contrasted, it is assumed that it declines
Variable coefficient is in the energy decay coefficient section of liquid dangerous material, then can interpolate that testing liquid belongs to liquid dangerous material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (5)
1. one kind is based on DSP adapting to image energy decline processing method, it is characterised in that：
The foundation of the energy projects model to fail including X-ray through liquid article energy absorption；
Including obtaining the image data information after X-ray is projected for testing liquid；
Including carrying out enhancing analyzing and processing to the testing liquid radioscopic image of collection；
Including the image analysis processing after being projected using corresponding energy-ray to testing liquid.
It is 2. according to claim 1 a kind of based on DSP adapting to image energy decline processing method, it is characterised in that：
The energy projects model of X-ray is established, corresponding calculation process is carried out by DSP, to electronic position situation of movement into line number
Operated according to obtaining；
The faultage image of testing liquid is obtained by X-ray；
Wherein, faultage image includes precession diagram and characteristic spectrum.
It is 3. according to claim 1 a kind of based on DSP adapting to image energy decline processing method, it is characterised in that：
The image data information after X-ray projection is obtained, one group of sampled pixel point is chosen in the image after projection, analyzes sample
The neighbouring pixel number of pixel, establishes corresponding background area pixels point data set.
It is 4. according to claim 1 a kind of based on DSP adapting to image energy decline processing method, it is characterised in that：
The image of collection carries out enhancing analyzing and processing, analyzing liquid article area grayscale data and background area gradation data, point
Analysis is to the gradation data after testing liquid X image enhancement processings.
It is 5. according to claim 1 a kind of based on DSP adapting to image energy decline processing method, it is characterised in that：
Testing liquid is projected using energy-ray, draws corresponding projects images；
Analyze the initial energy of electron on corresponding Energy X-ray；
Analyzed and processed to projecting the decay of the electron energy on testing liquid；
The decay coefficient of liquid dangerous material energy is analyzed and processed accordingly.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7092485B2 (en) * | 2003-05-27 | 2006-08-15 | Control Screening, Llc | X-ray inspection system for detecting explosives and other contraband |
| CN101382505A (en) * | 2008-09-25 | 2009-03-11 | 中北大学 | X ray imaging arrangement and method |
| CN101435783A (en) * | 2007-11-15 | 2009-05-20 | 同方威视技术股份有限公司 | Method and apparatus for recognizing substance |
| CN102095666A (en) * | 2007-10-05 | 2011-06-15 | 清华大学 | Method and equipment for checking liquid object |
| CN103604819A (en) * | 2013-11-25 | 2014-02-26 | 东北大学 | Device and method for carrying out substance identification by double-energy transmission and low-energy scattering |
| CN105911604A (en) * | 2016-05-30 | 2016-08-31 | 公安部第研究所 | Channel-type dangerous liquid detection device and channel-type dangerous liquid detection method |
-
2017
- 2017-11-29 CN CN201711228106.7A patent/CN107957428A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7092485B2 (en) * | 2003-05-27 | 2006-08-15 | Control Screening, Llc | X-ray inspection system for detecting explosives and other contraband |
| CN102095666A (en) * | 2007-10-05 | 2011-06-15 | 清华大学 | Method and equipment for checking liquid object |
| CN101435783A (en) * | 2007-11-15 | 2009-05-20 | 同方威视技术股份有限公司 | Method and apparatus for recognizing substance |
| CN101382505A (en) * | 2008-09-25 | 2009-03-11 | 中北大学 | X ray imaging arrangement and method |
| CN103604819A (en) * | 2013-11-25 | 2014-02-26 | 东北大学 | Device and method for carrying out substance identification by double-energy transmission and low-energy scattering |
| CN105911604A (en) * | 2016-05-30 | 2016-08-31 | 公安部第研究所 | Channel-type dangerous liquid detection device and channel-type dangerous liquid detection method |
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Application publication date: 20180424 |