CN105910956B - A kind of method of industry CT object analysis density and Density Distribution - Google Patents
A kind of method of industry CT object analysis density and Density Distribution Download PDFInfo
- Publication number
- CN105910956B CN105910956B CN201610237541.5A CN201610237541A CN105910956B CN 105910956 B CN105910956 B CN 105910956B CN 201610237541 A CN201610237541 A CN 201610237541A CN 105910956 B CN105910956 B CN 105910956B
- Authority
- CN
- China
- Prior art keywords
- circle
- reference substance
- testee
- section
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention provides a kind of method of industry CT object analysis density and Density Distribution, including monitor station is placed in together with testee using known density substance as reference substance；Reference substance is consistent away from monitor station centre distance with testee；To the two linear array column scan；Taking in testing result comprising testee and any section of reference substance is analysis object, does basic circle using beam hardening ring artifact center as the center of circle, obtain on basic circle circumference with the consistent reference substance of the centre distance and testee section position；Object circle is made reference by the center of circle of any point on basic circle circumference on reference substance section, the circle location is within reference substance section；Testee circle is done by the center of circle of any point on basic circle circumference on testee section, the circle location is within testee section；Testee circle is consistent with the reference substance area of a circle；Gray analysis is carried out to two circles using industry CT to obtain the two gray scale；Based on the gray count testee density value.
Description
Technical field
The invention belongs to material property detection technique fields, and in particular, to a kind of test method of object density, especially
It is related to a kind of method of industry CT object analysis density and Density Distribution.
Background technique
The basic principle of industry CT is that attenuation coefficient when passing through different material according to X-ray is different, passes through radionetric survey
And image processing techniques, the attenuation function of different material is obtained using the solution of Equations of Mathematical Physics, to obtain the interior of substance
Portion's information.Testee is divided into multiple sufficiently small voxel cells, the attenuation coefficient of each voxel is considered as constant.Pass through
CT image scanning is carried out from multiple angles, can be obtained the corresponding attenuation coefficient of each voxel.In practical applications, declining with water
Subtract and defines CT value, CT value=(voxel attenuation coefficient-water fade coefficient)/water fade coefficient × 1000 on the basis of coefficient.
The CT value of voxel is corresponded into the gray value on image, can be obtained so-called CT image.Gray value and material
Density is closely related, in same test, gray value and the linear correlativity of density of material.It, can be right using this characteristic
The object for being difficult to measure density measures or the density gradient of object is measured or calculated.
The test that Archimedes's drainage carries out density is generallyd use in research at present, but this method needs to soak on object
Enter in water, it is impossible to be used in the density measurement of the objects such as biscuit of ceramics, and be the average close of exemplar by the density that this method obtains
Degree, can not obtain the density gradient of interior of articles different zones.
Summary of the invention
For the above-mentioned deficiency of the prior art, technical problem to be solved by the present invention lies in provide a kind of industry CT point
The method for analysing object density and Density Distribution.
In order to solve the above technical problems, on the one hand, a kind of method of industry CT object analysis density provided by the present invention,
Include:
Using the substance of known density as reference substance, it is placed on monitor station together with testee；
Distance of the reference substance with the testee apart from the monitor station center is consistent；
Linear array column scan is carried out to the reference substance and the testee；
Take any section comprising the testee and the reference substance in testing result for analysis object, it is hard with beam
The center for changing ring artifact is that basic circle is done in the center of circle, obtain on the circumference of the basic circle, with the consistent ginseng of the centre distance
Examine the section position of object and testee；
On the section of reference substance, object circle, circle place are made reference by the center of circle of any point on the circumference of the basic circle
Range is within the section of the reference substance；
On the section of testee, testee circle, the circle are done by the center of circle of any point on the circumference of the basic circle
Location is within the section of the testee；And the testee is round consistent with the area of reference substance circle；
Gray analysis is carried out to obtain the gray scale of the two with reference substance circle using industry CT is round to the testee；
Density value based on testee described in obtained gray count.
According to the present invention, using the gray value of industry CT non-destructive testing and the linear corresponding relation of density of material, quilt is carried out
Survey the Statistics of Density analysis of object.And using the method for industry CT object analysis density of the invention, there are high sensitivity, data
Reliable feature, being capable of effective object analysis density.
Also, in the present invention, being also possible to when reference substance substance uniform for component, by a known density
Substance is placed on the monitor station as the reference substance together with the testee.
Also, in the present invention, be also possible to when reference substance substance non-uniform for component, it will be multiple known close
The substance of degree is placed on the monitor station as the reference substance together with the testee；Obtain each reference substance
The section position done using any point on the circumference of the basic circle as the center of circle more on the section of each reference substance
A reference substance circle, each reference substance circle location is within the section of the corresponding reference substance；And it obtains multiple
The gray scale of the reference substance circle, with the gray scale of the average value of the gray scale based on multiple reference substance circles and testee circle
Calculate the density value of the testee.
On the other hand, the present invention also provides a kind of methods of industry CT object analysis Density Distribution, comprising:
Using the substance of known density as reference substance, it is placed on monitor station together with testee；
Distance of the reference substance with the testee apart from the monitor station center is consistent；
Linear array column scan is carried out to the reference substance and the testee；
Any section for taking multiple regions to be measured and the reference substance in testing result comprising the testee is point
Object is analysed, basic circle is done as the center of circle using the center of beam hardening ring artifact, is obtained on the circumference of the basic circle and in this
The section position in multiple to be measured regions of the heart apart from consistent reference substance and testee；
On the section of reference substance, object circle, circle place are made reference by the center of circle of any point on the circumference of the basic circle
Range is within the section of the reference substance；
On the section in multiple regions to be measured of testee, done using any point on the circumference of the basic circle as the center of circle more
A testee circle, each testee circle location is in corresponding multiple regions to be measured of the testee
Within section；And the round area justified with the reference substance of multiple testees is consistent；
It is round to multiple testees respective to obtain with reference substance circle progress gray analysis using industry CT
Gray scale；
The Density Distribution in multiple regions to be measured is obtained by comparing the gray value in each region to be measured.
In accordance with the invention it is possible under the premise of not damaging tested object, the density point of different zones inside object analysis
Cloth carries out the evaluation of material property.
According to following specific embodiments and attached drawing is referred to, is better understood with above content of the invention and other mesh
, feature and advantage.
Detailed description of the invention
Fig. 1 is the sectional drawing that certain biscuit of ceramics density measurement is carried out using homogeneous object liquid water as reference substance；
The sectional drawing of biscuit of ceramics density measurement when Fig. 2 is using nonuniformity object as reference substance
The linear relationship chart of gray scale when Fig. 3 is using nonuniformity object as reference substance, density of material；
Fig. 4 is the region X to be measured for showing certain sample to be tested, the photo in kind of Y location.
Specific embodiment
Illustrate the progress of substantive distinguishing features and conspicuousness of the invention below with reference to specific implementation form and attached drawing.Ying Li
Solution, these implementation forms are only used for that invention is further explained, should not be understood as limiting the scope of the invention.
In order to solve in the prior art, the present invention provides the sides of a kind of industry CT object analysis density and Density Distribution
Method.
According to the present invention, using the gray value of industry CT non-destructive testing and the linear corresponding relation of density of material, quilt is carried out
Survey the Statistics of Density analysis of object.And using industry CT object analysis density of the invention method, can not damage it is tested
Under the premise of object, the Density Distribution of object analysis different zones carries out the evaluation of material property.In addition, method of the invention
Also there is high sensitivity, the reliable feature of data.
The method of industry CT object analysis density of the invention is according to the line of CT gray value and density of material in same test
Property corresponding relationship, using industry CT test object density gradient or investigate object density, by the intensity profile of industry CT and
The known density of reference substance carries out the calculating of density.
The method of industry CT object analysis density of the invention is related to a kind of test method for analyzing homogeneous object density ρ,
Using the gray value of industry CT non-destructive testing and the linear corresponding relation of density of material, the density of homogeneous object is calculated.Specifically,
The method of the industry CT object analysis density of an implementation form according to the present invention, specifically can comprise the following steps that
It (1) can be ρ by a known density0, the uniform substance of component as reference substance, detection is placed in together with testee
On platform.
(2) distance of the reference substance with testee apart from monitor station center is consistent, is penetrated with eliminating in industry CT detection process
Beam hardens the influence to gray value.
(3) take any section comprising testee and reference substance in testing result for analysis object, with beam hardening ring
The center of shape artifact be the center of circle do circle 0, obtain circle 0 circumference on, with the consistent reference substance of the centre distance and testee
Section position.
(4) on the section of reference substance, circle 1 is done using any point on 0 circumference of circle as the center of circle, which is referring to
Within the section of object.
(5) on the section of testee, circle 2 is done using any point on 0 circumference of circle as the center of circle, the circle location is in quilt
It surveys within the section of object, and circle 2 is consistent with the area of circle 1.
(6) gray analysis is carried out to circle 1, circle 2 using industry CT, the gray scale of the two is respectively g1、g2。
(7) (4)-(6) are repeated the above steps three times, the average gray for obtaining reference substance and testee is g0、g。
(8) then the density value of testee can be calculated as ρ=ρ0·g0/g。
In addition, when more difficult acquisition component equably reference substance, the industry CT analysis of another implementation form according to the present invention
The method of object density, specifically can comprise the following steps that
It (9) can be ρ by multiple, such as three or more known densities1、ρ2、ρ3Substance as reference substance, and it is tested
Object is placed on monitor station together.
(10) distance of each reference substance with testee apart from monitor station center is consistent, to eliminate in industry CT detection process
Influence of the beam hardening to gray value.
(11) take any section comprising testee and reference substance in testing result for analysis object, with beam hardening ring
The center of shape artifact be the center of circle do circle 3, obtain circle 3 circumference on, with the consistent reference substance of the centre distance and testee
Section.
(12) on the section of each reference substance, circle 4,5,6 of the same area is done using any point on 3 circumference of circle as the center of circle,
Each round location is within the section of corresponding reference substance.
(13) be that circle 7 is done in the center of circle using any point on 3 circumference of circle on the section of testee, it is desirable that 7 areas of circle with round 4,
5,6 is all the same, and the circle location is within the section of testee.
(14) gray analysis is carried out to circle 4-7 using industry CT, then the gray value difference of each reference substance and tested inspection object
For g4、g5、g6、g。
(15) gray value g4、g5、g6With density value ρ1、ρ2、ρ3Between there is linear relationship, fitting obtains straight by 3 points
Line, bringing gray value g into straight line can be obtained the density p of testee.
In addition, this method is related to a kind of point the present invention also provides a kind of method of industry CT object analysis Density Distribution
The test method of homogeneous object density distribution is analysed, is capable of the Density Distribution of object analysis inside different zones, carries out material property
Evaluation.Specifically, the method for the industry CT object analysis Density Distribution of an implementation form according to the present invention, specifically may include with
Lower step:
It (16) is ρ by a known density0, the uniform substance of component as reference substance, detection is placed in together with testee
On platform.
(17) distance of the reference substance with testee apart from monitor station center is consistent, is penetrated with eliminating in industry CT detection process
Beam hardens the influence to gray value.
(18) placement angle for adjusting testee takes the region A to be measured in testing result comprising testee and reference
Any section of object be analysis object, using the center of beam hardening ring artifact be the center of circle do circle 0, obtain justify 0 circumference on,
With the section position of the consistent reference substance of the centre distance and testee.
(19) on the section of reference substance, circle 1 is done using any point on 0 circumference of circle as the center of circle, which is joining
It examines within the section of object.
(20) on the section of testee, circle 2 is done using any point on 0 circumference of circle as the center of circle, which exists
Within the section of testee, and circle 2 is consistent with the area of circle 1.
(21) gray analysis is carried out to circle 1, circle 2 using industry CT, the gray scale of the two is respectively g1、g2。
(22) (19)-(21) are repeated the above steps three times, the average gray for obtaining reference substance and tested object is g0、gA。
(23) placement angle for adjusting tested object takes the region B to be measured in testing result comprising testee and reference
Any section of object is analysis object, does circle 0 ' by the center of circle of the center of beam hardening ring artifact, obtains the circumference in circle 0 '
Section position upper, with the consistent reference substance of the centre distance and testee.
(24) on the section of reference substance, circle 1 ' is done using any point on 0 ' circumference of circle as the center of circle, which exists
Within the section of reference substance.
(25) on the section of testee, circle 2 ' is done using any point on 0 ' circumference of circle as the center of circle, the circle location is equal
Within the section of testee, and circle 2 ' is consistent with the area of circle 1 '.
(26) gray analysis is carried out to circle 1 ', circle 2 ' using industry CT, the gray scale of the two is respectively g1′、g2′。
(27) step (24)-(26) are repeated three times, the average gray for obtaining reference substance and tested object is g0′、gB′。
(28) gray value of region B to be measured is by conversion gB=gB′·g0/g0′。
The Density Distribution of (29) two region A, B can pass through gA、gBIt is compared.
Below by way of the method for the specific embodiment industry CT object analysis density that present invention be described in more detail.
Embodiment 1
It can be respectively 1.00g/cm by known density3Liquid water A be reference substance, to certain biscuit of ceramics B carry out densitometer
It calculates.
By exemplar A, B to be uniformly placed on monitor station away from monitor station center same distance.Linear array is carried out to exemplar to sweep
It retouches.Circle is done as the center of circle using the center of beam hardening ring artifact to analyze object comprising any section exemplar A, B in testing result
0, circle 0 will be by the section of exemplar A-B body.
On the section of exemplar A, circle 1 is done by the center of circle of any point on above-mentioned 0 circumference of circle, the circle location is in exemplar
Within the section of A.It is larger in the section of testee B, using above-mentioned round 0 week upper any point as the center of circle do circle 2 of the same area,
3.Each round location is within the section of corresponding testee.As shown in Figure 1.
Gray analysis, gray value g are carried out to circle 1-3 using industry CTWater、gObject 1、gObject 2Respectively 136.42,228.47,
229.15。
The then density of testee
Embodiment 2
It can be respectively 1.07g, 1.56,1.13,0.98g/cm by known density3Porous ceramics C, D, E, F be reference substance,
Density calculating is carried out to two biscuit of ceramics G, H.
By exemplar C-H to be uniformly placed on monitor station away from monitor station center same distance.Linear array is carried out to exemplar to sweep
It retouches.Any section in testing result comprising the section exemplar C-H is analysis object, is circle with the center of beam hardening ring artifact
The heart does circle 0, and circle 0 will be by the section of exemplar C-H body.
On the section of reference substance C-F, it is round 1-4 of the same area using any point on above-mentioned 0 circumference of circle as the center of circle, each
Circle location is within the section of corresponding reference substance.On the section of testee G, H, with any on above-mentioned 0 circumference of circle
Point is that round 5-7 of the same area is in the center of circle, and since exemplar H is slightly larger, circle 6,7 is on the section of same exemplar H.Where each circle
Range is within the section of corresponding testee.As shown in Figure 2.
Gray analysis, gray value g are carried out to circle 1-7 using industry CT1-g7Respectively 139.4,196.6,144.4,
124.8 and 208.4,209.8,210.0.
Gray value g1、g2、g3、g4There is linear relationship between the density value of corresponding reference substance, fitting is obtained by 3 points
Straight line g=120.47 ρ+7.41, as shown in Figure 3.By gray value g5-g7It brings straight line into, can be obtained the density p of testeeG
=1.67g/cm3And ρH=1.68g/cm3(ρH1And ρH2It is averaged as ρH)。
Embodiment 3
It can will be reference substance by liquid water, and compare the Density Distribution of different zones X, Y of certain sample, the position of X, Y such as Fig. 4
It is shown.
Exemplar and reference substance are uniformly placed on monitor station.Position and the disposing way for adjusting exemplar, by the area of exemplar
Domain X and reference substance are adjusted to the same horizontal position, carry out linear array column scan to exemplar.
Taking the section of inclusion region X and reference substance in testing result is analysis object, in beam hardening ring artifact
The heart is that circle 0 is done in the center of circle, and circle 0 will be by the section of region X and reference substance.
On the section of reference substance, circle 1 is done using any point on 0 circumference of circle as the center of circle；On the section of region X, with 0 circle of circle
Any point is that the center of circle is done and 1 circle 2 of the same area of circle on week.Each round location is within corresponding section.Such as Fig. 1 institute
Show.
Gray analysis, the gray value g of reference substance and region X are carried out to circle 1-2 using industry CT0、gXRespectively 158.37,
492.28。
Position and the disposing way for adjusting exemplar, the region Y of exemplar and reference substance are adjusted to the same horizontal position, to sample
Part carries out linear array column scan.Taking the section of inclusion region Y and reference substance in testing result is analysis object, with beam hardening ring-type
The center of artifact is that circle 0 ' is done in the center of circle, and circle 0 ' will be by the section of region Y and reference substance.
On the section of reference substance, circle 1 ' is done using any point on 0 ' circumference of circle as the center of circle；On the section of region Y, with circle
Any point is that the center of circle is done and 1 ' circle 2 ' of the same area of circle on 0 ' circumference.Each round location is within corresponding section.
Gray analysis, the gray value g of reference substance and region Y are carried out to two circles 1 ', 2 ' using industry CT0′, g ' be respectively
129.35、403.93。
Then the gray value of region Y can be scaledThen region X, Y
Density size is to be compared by gray value 492.28,494.55, and region Y is high compared with region X density by about 0.46%.
Under the objective for not departing from essential characteristic of the invention, the present invention can be presented as diversified forms, therefore in the present invention
Implementation form be to be illustrative rather than definitive thereof, limited since the scope of the present invention is defined by the claims rather than by specification,
And all changes fallen in the full scope of equivalents of the range that claim defines or the range that it is defined be understood to include
In detail in the claims.
Claims (4)
1. a kind of method of industry CT object analysis density characterized by comprising
Using the substance of known density as reference substance, it is placed on monitor station together with testee；
Distance of the reference substance with the testee apart from the monitor station center is consistent；
Linear array column scan is carried out to the reference substance and the testee；
Take any section comprising the testee and the reference substance in testing result for analysis object, with beam hardening ring
The center of shape artifact is that basic circle is done in the center of circle, obtain on the circumference of the basic circle, with the consistent reference substance of the centre distance
And the section position of testee；
On the section of reference substance, object circle, the circle location are made reference by the center of circle of any point on the circumference of the basic circle
Within the section of the reference substance；
On the section of testee, testee circle, circle place are done by the center of circle of any point on the circumference of the basic circle
Range is within the section of the testee；And the testee is round consistent with the area of reference substance circle；
Gray analysis is carried out to obtain the gray scale of the two with reference substance circle using industry CT is round to the testee；
Density value based on testee described in obtained gray count.
2. the method according to claim 1, wherein
When reference substance substance uniform for component, using the substance of a known density as the reference substance, with the quilt
Object is surveyed to be placed in together on the monitor station.
3. the method according to claim 1, wherein
When reference substance substance non-uniform for component, using the substance of multiple known densities as the reference substance, with institute
Testee is stated to be placed in together on the monitor station；The section position of each reference substance is obtained, in each ginseng
It examines on the section of object, does multiple reference substance circles, each reference substance circle by the center of circle of any point on the circumference of the basic circle
Location is within the section of the corresponding reference substance；And the gray scale of multiple reference substance circles is obtained, based on more
The density value of testee described in the average value of gray scale and the gray count of testee circle of a reference substance circle.
4. a kind of method of industry CT object analysis Density Distribution characterized by comprising
Using the substance of known density as reference substance, it is placed on monitor station together with testee；
Distance of the reference substance with the testee apart from the monitor station center is consistent；
Linear array column scan is carried out to the reference substance and the testee；
Take any section in the multiple regions to be measured and the reference substance in testing result comprising the testee for analysis pair
As, basic circle is done as the center of circle using the center of beam hardening ring artifact, obtain on the circumference of the basic circle, with the center away from
The section position in multiple regions to be measured from consistent reference substance and testee；
On the section of reference substance, object circle, the circle location are made reference by the center of circle of any point on the circumference of the basic circle
Within the section of the reference substance；
On the section in multiple regions to be measured of testee, multiple quilts are made using any point on the circumference of the basic circle as the center of circle
Object circle is surveyed, each testee circle location is in the section in corresponding multiple regions to be measured of the testee
Within；And the round area justified with the reference substance of multiple testees is consistent；
Gray analysis is carried out to obtain respective gray scale with reference substance circle using industry CT is round to multiple testees；
The Density Distribution in multiple regions to be measured is obtained by comparing the gray value in each region to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237541.5A CN105910956B (en) | 2016-04-15 | 2016-04-15 | A kind of method of industry CT object analysis density and Density Distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610237541.5A CN105910956B (en) | 2016-04-15 | 2016-04-15 | A kind of method of industry CT object analysis density and Density Distribution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105910956A CN105910956A (en) | 2016-08-31 |
| CN105910956B true CN105910956B (en) | 2019-02-26 |
Family
ID=56747172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610237541.5A Active CN105910956B (en) | 2016-04-15 | 2016-04-15 | A kind of method of industry CT object analysis density and Density Distribution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105910956B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663287B (en) * | 2018-04-25 | 2021-02-26 | 中国地质大学（北京） | Method for accurately calculating coal rock density by utilizing CT (computed tomography) image |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305610A (en) * | 1998-02-11 | 2001-07-25 | 模拟技术公司 | Computed tomography X-ray photography apparatus and method for classifying objects |
| CN1779444A (en) * | 2004-11-26 | 2006-05-31 | 清华大学 | Safety CT inspection and inspector for liquid by ray resource |
| JP2007175160A (en) * | 2005-12-27 | 2007-07-12 | Shimadzu Corp | Tomograph and radiation signal processing method |
| CN101315342A (en) * | 2008-07-17 | 2008-12-03 | 西北工业大学 | Density calibration method of carbon/silicon carbide ceramic matrix composite |
| GB2452187A (en) * | 2004-11-26 | 2009-02-25 | Nuctech Co Ltd | Computed Tomography apparatus for detecting unsafe liquids |
| CN102095666A (en) * | 2007-10-05 | 2011-06-15 | 清华大学 | Method and equipment for checking liquid object |
| WO2011132820A1 (en) * | 2010-04-22 | 2011-10-27 | Agency For Defense Development | Method for evaluation of density profile in carbon/carbon material and method for production of standard density test block used therein |
| WO2013003533A1 (en) * | 2011-06-29 | 2013-01-03 | Board Of Regents-University Of Texas System | Device and method for deriving ct numbers in cone beam computed tomography |
| CN102944566A (en) * | 2012-11-22 | 2013-02-27 | 哈尔滨工业大学 | Method for testing digital imaging accuracy of bituminous mixtures based on computed tomography (CT) machine |
| CN102279141B (en) * | 2010-06-12 | 2013-05-01 | 中国民航科学技术研究院 | Test box for detecting CT (Computed Tomography) type safety inspection equipment |
| CN103674774A (en) * | 2013-11-20 | 2014-03-26 | 国家电网公司 | Basin-type insulator density uniformity testing method |
| TW201421378A (en) * | 2012-11-21 | 2014-06-01 | Univ Nat Cheng Kung | Methods for processing enhancement of target pattern, method for generating classification system of target patterns and classifying detected target patterns |
| CN104297267A (en) * | 2013-07-16 | 2015-01-21 | 中国科学院寒区旱区环境与工程研究所 | Cylindrical disk for quantitatively measuring fault density of rock and soil on CT-machine scanning bed and method thereof |
| CN104316546A (en) * | 2014-10-23 | 2015-01-28 | 航天材料及工艺研究所 | Nondestructive tracking and evaluation method for quality of antenna housing made of composite material |
| CN104825195A (en) * | 2015-05-25 | 2015-08-12 | 无锡海斯凯尔医学技术有限公司 | Shear wave viscoelasticity imaging method and system |
| CN104931515A (en) * | 2015-06-01 | 2015-09-23 | 大连海事大学 | Interior uniformity recognition method based on relative density of all components of bituminous mixture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6990222B2 (en) * | 2001-11-21 | 2006-01-24 | Arnold Ben A | Calibration of tissue densities in computerized tomography |
| KR100912832B1 (en) * | 2008-01-25 | 2009-08-18 | 가톨릭대학교 산학협력단 | Phantom for quality assurance for image base radiation treatment device |
-
2016
- 2016-04-15 CN CN201610237541.5A patent/CN105910956B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305610A (en) * | 1998-02-11 | 2001-07-25 | 模拟技术公司 | Computed tomography X-ray photography apparatus and method for classifying objects |
| CN1779444A (en) * | 2004-11-26 | 2006-05-31 | 清华大学 | Safety CT inspection and inspector for liquid by ray resource |
| GB2452187A (en) * | 2004-11-26 | 2009-02-25 | Nuctech Co Ltd | Computed Tomography apparatus for detecting unsafe liquids |
| JP2007175160A (en) * | 2005-12-27 | 2007-07-12 | Shimadzu Corp | Tomograph and radiation signal processing method |
| CN102095666A (en) * | 2007-10-05 | 2011-06-15 | 清华大学 | Method and equipment for checking liquid object |
| CN101315342A (en) * | 2008-07-17 | 2008-12-03 | 西北工业大学 | Density calibration method of carbon/silicon carbide ceramic matrix composite |
| WO2011132820A1 (en) * | 2010-04-22 | 2011-10-27 | Agency For Defense Development | Method for evaluation of density profile in carbon/carbon material and method for production of standard density test block used therein |
| CN102279141B (en) * | 2010-06-12 | 2013-05-01 | 中国民航科学技术研究院 | Test box for detecting CT (Computed Tomography) type safety inspection equipment |
| WO2013003533A1 (en) * | 2011-06-29 | 2013-01-03 | Board Of Regents-University Of Texas System | Device and method for deriving ct numbers in cone beam computed tomography |
| TW201421378A (en) * | 2012-11-21 | 2014-06-01 | Univ Nat Cheng Kung | Methods for processing enhancement of target pattern, method for generating classification system of target patterns and classifying detected target patterns |
| CN102944566A (en) * | 2012-11-22 | 2013-02-27 | 哈尔滨工业大学 | Method for testing digital imaging accuracy of bituminous mixtures based on computed tomography (CT) machine |
| CN104297267A (en) * | 2013-07-16 | 2015-01-21 | 中国科学院寒区旱区环境与工程研究所 | Cylindrical disk for quantitatively measuring fault density of rock and soil on CT-machine scanning bed and method thereof |
| CN103674774A (en) * | 2013-11-20 | 2014-03-26 | 国家电网公司 | Basin-type insulator density uniformity testing method |
| CN104316546A (en) * | 2014-10-23 | 2015-01-28 | 航天材料及工艺研究所 | Nondestructive tracking and evaluation method for quality of antenna housing made of composite material |
| CN104825195A (en) * | 2015-05-25 | 2015-08-12 | 无锡海斯凯尔医学技术有限公司 | Shear wave viscoelasticity imaging method and system |
| CN104931515A (en) * | 2015-06-01 | 2015-09-23 | 大连海事大学 | Interior uniformity recognition method based on relative density of all components of bituminous mixture |
Non-Patent Citations (2)
| Title |
|---|
| GB/T 29067-2012 无损检测 工业计算机层析成像（CT）图像测量方法;中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会;《GB/T 29067-2012 无损检测 工业计算机层析成像（CT）图像测量方法》;20121231;全文 * |
| 多材质构件密度的工业CT无损检测;陈慧能 等;《测试技术学报》;20101115;第24卷(第6期);第547-551页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105910956A (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104062308B (en) | Rock nondestructive mineral composition detection method | |
| Prade et al. | Nondestructive characterization of fiber orientation in short fiber reinforced polymer composites with X-ray vector radiography | |
| Moreno et al. | Tillage and soil type effects on soil surface roughness at semiarid climatic conditions | |
| US20110299752A1 (en) | Method for implementing depth deconvolution algorithm for enhanced thermal tomography 3d imaging | |
| CN103892809B (en) | A kind of magnetic nano temperature formation method and system | |
| Ma et al. | Planar magnetic induction tomography for 3D near subsurface imaging | |
| Marinetti et al. | Pulse phase thermography for defect detection and visualization | |
| Pires et al. | Porosity distribution by computed tomography and its importance to characterize soil clod samples | |
| CN108627440A (en) | A kind of composite material porosity test device and method | |
| Bhuiyan et al. | Consideration of X-ray microtomography to quantitatively determine the size distribution of bubble cavities in iron ore pellets | |
| Wei et al. | Evaluation of planar 3D electrical capacitance tomography: from single-plane to dual-plane configuration | |
| CN102590248A (en) | Method for online detecting electronic element by translational type micro focus CT (Computerized Tomography) detection device | |
| CA3020520A1 (en) | Table top image calibration phantom | |
| Vavilov et al. | Dynamic thermal tomography of composites: a comparison of reference and reference-free approaches | |
| Yang et al. | Calibration method of projection coordinate system for X-ray cone-beam laminography scanning system | |
| CN105910956B (en) | A kind of method of industry CT object analysis density and Density Distribution | |
| CN107300562A (en) | A kind of X-ray lossless detection method of measuring relay finished product contact spacing | |
| Flay et al. | Application of the optical transfer function in x-ray computed tomography-a review. | |
| KR101492254B1 (en) | Ultrasound diagnostic apparatus and method for quality control | |
| Konovalov et al. | Theoretical limit of spatial resolution in diffuse optical tomography using a perturbation model | |
| Plotnikov et al. | Visualization of subsurface defects in composites using a focal plane array infrared camera | |
| 李硕 et al. | Prediction of vertical distribution of soil nitrogen content in soil profile using spectral imaging technique | |
| Krishnan et al. | Feature‐space assessment of electrical impedance tomography coregistered with computed tomography in detecting multiple contrast targets | |
| Eskandari et al. | Experimental investigation of factorization method as a qualitative approach for near-field microwave imaging | |
| KR100341867B1 (en) | Automatic Evaluation System of Fabric Wrinkles and Seam Puckers and Their Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |