CN108444967A - A kind of modified pitch effect evaluation method based on image processing techniques - Google Patents
A kind of modified pitch effect evaluation method based on image processing techniques Download PDFInfo
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
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- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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- G—PHYSICS
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Abstract
The present invention relates to a kind of modified pitch effect evaluation method based on image processing techniques, produces the good polymer modified asphalt print of observing effect, fluorescence microscope images is obtained under the observation of fluorescence microscope first；Then bianry image acquisition is carried out to the fluorescence microscope images that step S1 is obtained：Fluorescence microscope images are carried out with gray level image acquisition, gray level image denoising, gray level image equalization, image completion, Ostu Threshold segmentations, opening operation successively；It is finally based on the bianry image that step S2 is obtained, image features extraction is carried out, and carry out evaluation index numerical computations, to judge the modified effect of polymer modified asphalt.The present invention can quickly, efficiently judge the modified effect of polymer modified asphalt and at low cost.
Description
Technical field
The present invention relates to battery testing field, especially a kind of modified pitch effect assessment side based on image processing techniques
Method.
Background technology
With deepening continuously both at home and abroad to asphalt performance research, fluorescence microscopy is auxiliary as detection asphalt performance
Assistant's section is come into being.It can convenient, efficiently differentiate that the distribution of polymer phase in pitch is special by fluorescence microscopy
Property, and then differentiate the thermodynamic compatibility of pitch and polymer, to judge the modified effect of polymer modified asphalt.
The sample preparation of polymer modified asphalt can influence observed result, and film-making temperature and film-making film thickness are to influence observation to gather
The principal element of polymer modified pitch dispersity can just be surveyed from the point of view of current research by a kind of polymer modified asphalt
Uniform film thickness temperature control pelletizer and method realize the preparation of standard sample；In addition, in fluorescence microscopy, figure is obtained
Picture and image processing method differ, and do not seek unity of standard.Even same class method, step used by different researchers
Very variant, this also results in greatest differences of the polymer phase obtained after processing on Morphologic Parameters, closely influences polymerization
The evaluation of object modified pitch effect.
Invention content
In view of this, the purpose of the present invention is to propose to a kind of modified pitch effect assessment side based on image processing techniques
Method can quickly, efficiently judge the modified effect of polymer modified asphalt and at low cost.
The present invention is realized using following scheme：A kind of modified pitch effect evaluation method based on image processing techniques, tool
Body includes the following steps：
Step S1：The good polymer modified asphalt print of observing effect is produced, is obtained under the observation of fluorescence microscope
Obtain fluorescence microscope images；
Step S2：Bianry image acquisition is carried out to the fluorescence microscope images that step S1 is obtained：Successively to fluorescence microscope images
The acquisition of progress gray level image, gray level image denoising, gray level image equalization, image completion, Ostu Threshold segmentations, image open fortune
It calculates；
Step S3：Based on the bianry image that step S2 is obtained, image features extraction is carried out, and carry out evaluation index number
Value calculates, to judge the modified effect of polymer modified asphalt.
Further, in step S1, the good polymer modified asphalt print passes through a kind of polymer modified asphalt
Uniform film thickness temperature control pelletizer can be surveyed to be made；
It includes babinet and the ultrasound that is located in babinet that the polymer modified asphalt, which can survey uniform film thickness temperature control pelletizer,
Wave measurement component, temperature control are evenly heated component, display module and adjusting control component；
The ultrasonic measurement component includes Probing pen 1 and ultrasonic meter；The Probing pen 1 is in high-frequency electrical arteries and veins
Ultrasonic wave is generated and receives under punching triggering, the ultrasonic meter is to measure polymer modified asphalt film-making film thickness, ultrasound
Wave measurement instrument is connected with Probing pen 1 and display screen respectively；
The temperature control is evenly heated component and includes electromagnetic oven, the metallic plate that is located on electromagnetic oven, is located at chamber above metallic plate
Indoor conduction oil and ferroaluminium landing slab and temperature controller positioned at conduction oil top；The electromagnetic oven is for making metal
Plate generates heat；The metallic plate is used to transmit heat to conduction oil, and the conduction oil is flat for transferring heat to ferroaluminium
Platen；The ferroaluminium landing slab is for carrying glass slide and being evenly heated glass slide, and the temperature controller is by thermometer measure
Temperature in conduction oil, the temperature controller are electrically connected with electromagnetic oven to control its operating temperature；
The display module includes indicator light and display screen；The indicator light, display screen are electrically connected with power on button；
The adjusting control component includes power on button and temperature setting button；The power on button and the temperature controller,
The electromagnetic oven, the ultrasonic measurement component are connected；The temperature setting button to control the temperature of the conduction oil,
It is connected with temperature controller.
Its work step is as follows：
Step S1：It places the device on experimental bench, adjusts the foot screw 17, observe the gas in the circular bubble
Bubble keeps it placed in the middle；
Step S2：Glass slide is positioned on landing slab, film-making number as needed is placed, and is taken about
The pitch of 0.5g mass is put on glass slide；
Step S3：By power on button opening device, the indicator light is shown as green light；It is set using temperature setting button
Heating temperature T2 and by the display screen displays temperature, the temperature of the landing slab and conduction oil is real-time by the display screen
Show current film-making temperature T1；
Step S4：Reach the set temperature shown in the platform plate temperature, that is, display screen T1, i.e., the described display screen T2
When shown, coverslip is put, opens ultrasonic meter, be filmed by the pressing coverslip of the Probing pen 1 and is surveyed in real time
Go out film thickness, and by shown in display screen D；
Step S5：The Probing pen 1 can be by the control of polymer modified asphalt film-making uniform film thickness by the measurement of multiple spot
In a certain range；
Step S6：It can be shifted with proximity gloves or other transfer tools after the completion of film-making, wait for that it is cooled to room temperature, put
Under fluorescence microscope, observed image obtains image and is stored with BMP formats.
Wherein, 1 size of above-mentioned Probing pen：Diameter 5mm, long 150mm, nib are the round platform of high 5mm, a diameter of 1mm of round platform.
The above-mentioned bottom of box is equipped with multiple adjustable for height foot screws 17, and the tank surface is equipped with circular bubble.Above-mentioned metallic plate is
Iron plate；Conduction oil is methyl-silicone oil；The temperature controller is electric conduction thermometer.Above-mentioned ultrasonic meter measures film thickness
Controllable precision is：0.01mm.To control electromagnetic oven working condition and then control platform plate temperature, temperature controls above-mentioned temperature controller
Ranging from：20℃-200℃.
Further, the amplification factor of the fluorescence microscope is × 40 to × 4000, fluorescence microscope images storage format
For BMP.
Further, in step S2, it is described gray level image acquisition is carried out successively to fluorescence microscope images, gray level image is gone
It makes an uproar, gray level image equalization, image completion, Ostu Threshold segmentations, opening operation are realized in Matlab softwares.Described image
Denoising carries out noise elimination to the gray level image；The gray level image equalizes that gray level image is made to be more clear；It is described
Image completion is filled the inside blank parts of polymer phase；The Ostu Threshold segmentations are calculating segmentation threshold；Institute
Opening operation is stated, opening operation (first corrode and expand afterwards, number can determine as needed) is carried out to the image after segmentation, i.e.,
It can get the bianry image.
Further, in step S3, described image characteristic parameter extraction is realized in Image Pro Plus softwares.
Further, described image characteristic parameter includes shape area, equivalent polygon area, fractal dimension, equivalent circular
Diameter, the Gao Yukuan of equivalent rectangular, circularity, polymer phase are to the inertia of X-axis and Y-axis.
Further, the evaluation index numerical computations include：
Polymer volume characteristic index DP, calculated using following formula：DP=A1/A0, wherein A1For shape area or equivalent polygon
Shape area, A0For zoning area；
Polymer form characteristic index R, i.e. circularity, are one of image features, and R uses software I mage Pro Plus
Included calculation calculates；
Polymer and pitch boundary characteristic index, i.e. fractal dimension, are one of image features, using Image Pro
Plus carries calculation and calculates；
Polymer dispersity characteristic index：It is calculated using following formula：Wherein, SiFor
The polymer area of each subregion；
Polymer homogeneity characteristic index I, is calculated using following formula：Ix/Iy, wherein IxWith IyRespectively polymer phase for
The inertia of X-axis and Y-axis.
Further, the gray level image denoising influences hardly macro property to remove in polymer modified asphalt
The molecule of meter, and then reduce the influence to the characteristic parameter of polymer phase.Described image opening operation, to binary image elder generation
It is expanded after corrosion, tiny object can be eliminated, the separating objects at very thin point, when boundary of smooth larger object is unconspicuous
Change its area.
The present invention can survey uniform film thickness temperature control pelletizer and method by a kind of polymer modified asphalt, change to polymer
Property pitch film-making realize that even temperature control and film thickness can be surveyed simultaneously, and then reduce the shadow observed fluorescence microscopy of print error
It rings；And then image is obtained using fluorescence microscopy print, ash is carried out to image according to Matlab image processing programs code
The extraction etc. of degreeization processing, Ostu methods Threshold segmentation and polymer phase parameter obtains binary image；And pass through Image Pro
Plus softwares carry out characteristic parameter acquisition to bianry image, are based on this, can differentiate pitch and the physical compatibility of polymer, polymerize
Object volume, polymer dispersity etc., to evaluate the modified effect of polymer modified asphalt.
Compared with prior art, the present invention has following advantageous effect：The present invention is a kind of set of based on image procossing
Polymer modified asphalt evaluation of modification effect method；Combine multinomial apparatus and method for, can ensure the polymer modification obtained drip
Temperature uniform, controllable, film thickness can be surveyed when green print heating, reduce extraneous factor as far as possible and done to fluorescence microscopy effect
It disturbs；The present invention can ensure that obtain gray level image and binary image more coincide with real image；Can quickly, efficiently it judge
The modified effect of polymer modified asphalt and at low cost.
Description of the drawings
Fig. 1 is the method flow schematic diagram of the present invention.
Fig. 2, which is the polymer modified asphalt of the present invention, can survey the signal of uniform film thickness temperature control pelletizer structure front view structure
Figure.
Fig. 3, which is the polymer modified asphalt of the present invention, can survey uniform film thickness temperature control pelletizer structure top view.
Fig. 4, which is the polymer modified asphalt of the present invention, can survey the uniform film thickness temperature control pelletizer structure right side regarding schematic diagram.
Fig. 5 handles code schematic diagram for parts of images in the Matlab of the present invention.
Fig. 6 is the binary image analysis schematic diagram of the embodiment of the present invention.
In figure, 1 for Probing pen 1,2 be landing slab, 3 be conduction oil, and 4 be electromagnetic oven, and 5 be temperature controller, and 6 be display screen, and 7 are
Button control area, 8 be heat-insulating material, and 9 be indicator light, and 10 be conduction oil oil level, and 11 connect formula thermometer for electricity, and 13 be to wait for film-making sample
This, 14 be oil transportation hole, and 15 be metallic plate, and 16 be circular bubble, and 17 for foot screw 17,18 be babinet.
In Fig. 2 to Fig. 4, A is ultrasonic measurement component, and B is that temperature control is evenly heated component, and C is display module, adjusting control
Component D.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, present embodiments providing a kind of modified pitch effect evaluation method based on image processing techniques, have
Body includes the following steps：
Step S1：The good polymer modified asphalt print of observing effect is produced, is obtained under the observation of fluorescence microscope
Obtain fluorescence microscope images；
Step S2：Bianry image acquisition is carried out to the fluorescence microscope images that step S1 is obtained：Successively to fluorescence microscope images
The acquisition of progress gray level image, gray level image denoising, gray level image equalization, image completion, Ostu Threshold segmentations, image open fortune
It calculates；
Step S3：Based on the bianry image that step S2 is obtained, image features extraction is carried out, and carry out evaluation index number
Value calculates, to judge the modified effect of polymer modified asphalt；
In the present embodiment, in step S1, the good polymer modified asphalt print passes through a kind of polymer modification
Pitch can survey uniform film thickness temperature control pelletizer and be made；
The polymer modified asphalt as described in Fig. 2,3,4 can survey uniform film thickness temperature control pelletizer and include babinet 18 and be located at case
Ultrasonic measurement component, temperature control in body 18 are evenly heated component, display module and adjusting control component；
The ultrasonic measurement component includes Probing pen 1 and ultrasonic meter；The Probing pen 1 is in high-frequency electrical arteries and veins
Ultrasonic wave is generated and receives under punching triggering, the ultrasonic meter is to measure polymer modified asphalt film-making film thickness, ultrasound
Wave measurement instrument is connected with Probing pen 1 and display screen 6 respectively；
The temperature control is evenly heated component and includes electromagnetic oven 4, the metallic plate 15 that is located on electromagnetic oven 4, is located at metallic plate 15
Conduction oil 3 in upper chambers and the ferroaluminium landing slab 2 and temperature controller 5 positioned at 3 top of conduction oil；The electromagnetic oven 4
For making metallic plate 15 generate heat；The metallic plate 15 is used to transmit heat to conduction oil 3, and the conduction oil 3 is for transmitting
Heat is to ferroaluminium landing slab 2；The ferroaluminium landing slab 2 is described for carrying glass slide and being evenly heated glass slide
By the temperature in thermometer measure conduction oil 3, the temperature controller 5 is electrically connected with electromagnetic oven 4 to control its work temperature temperature controller 5
Degree；
The display module includes indicator light and display screen 6；The indicator light 9, display screen 6 are electrically connected with power on button；
The adjusting control component includes power on button and temperature setting button；The power on button and the temperature controller 5,
The electromagnetic oven 4, the ultrasonic measurement component are connected；The temperature setting button to control the temperature of the conduction oil 3,
It is connected with temperature controller 5.
Its work step is as follows：
Step S1：It places the device on experimental bench, adjusts the foot screw 17, observe the gas in the circular bubble 16
Bubble keeps it placed in the middle；
Step S2：Glass slide is positioned on landing slab, film-making number as needed is placed, and is taken about
The pitch of 0.5g mass is put on glass slide；
Step S3：By power on button opening device, the indicator light is shown as green light；It is set using temperature setting button
Heating temperature T2 and by the display screen displays temperature, the temperature of the landing slab and conduction oil is real-time by the display screen
Show current film-making temperature T1；
Step S4：Reach the set temperature shown in the platform plate temperature, that is, display screen T1, i.e., the described display screen T2
When shown, coverslip is put, opens ultrasonic meter, be filmed by the pressing coverslip of the Probing pen 1 and is surveyed in real time
Go out film thickness, and by shown in display screen D；
Step S5：The Probing pen 1 can be by the control of polymer modified asphalt film-making uniform film thickness by the measurement of multiple spot
In a certain range；
Step S6：It can be shifted with proximity gloves or other transfer tools after the completion of film-making, wait for that it is cooled to room temperature, put
Under fluorescence microscope, observed image obtains image and is stored with BMP formats.
Wherein, 1 size of above-mentioned Probing pen：Diameter 5mm, long 150mm, nib are the round platform of high 5mm, a diameter of 1mm of round platform.
18 bottom of above-mentioned babinet is equipped with multiple adjustable for height foot screws 17, and 18 surface of the babinet is equipped with circular bubble 16.Above-mentioned gold
Category plate 15 is iron plate；Conduction oil is methyl-silicone oil；The temperature controller is electric conduction thermometer.Above-mentioned ultrasonic meter measures
Film thickness controllable precision is：0.01mm.Above-mentioned temperature controller to control electromagnetic oven working condition and then control platform plate temperature,
Temperature controlling range is：20℃-200℃.
Wherein, the ultrasonic meter includes technology door, counter, decoder, to analyze the super of Probing pen reception
Acoustic signals and the digital signal for being converted to surveyed film thickness.Ferroaluminium landing slab is slightly below display screen so that film-making is not
Easily leave operating platform.The size of landing slab can make 3 film-makings simultaneously.The adjusting control component include power on button,
Temperature setting button measures film thickness button, Level tune button.The first three button is arranged at button area 7；The power on button
It is connected with the temperature controller, the electric furnace, the ultrasonic measurement component；The temperature setting button is controlling the heat conduction
The temperature of oil is connected with temperature controller.The temperature controller is received by being inserted into the electric conduction thermometer in conduction oil in conduction oil
Heating signal and then control electric furnace working condition.The temperature of the conduction oil can by temperature controller be arranged conduction oil burning point with
Under each temperature section, to be adapted to the different polymer modified asphalt temperature for obtaining preferable dispersity.The electric furnace with
The higher device heat-insulating material of the temperature such as conduction oil 8 is kept apart.
In the present embodiment, by oil transportation hole 14, control conduction oil oil level 10 keeps ferroaluminium landing slab heated more
It is even.The content of the display screen includes three parts, is platform plate temperature, set temperature and film thickness respectively from top to bottom.
In the present embodiment, the amplification factor of the fluorescence microscope is × 40 to × 4000, fluorescence microscope images storage
Format is BMP.
In the present embodiment, described that gray level image acquisition, gray level image are carried out successively to fluorescence microscope images in step S2
Denoising, gray level image equalization, image completion, Ostu Threshold segmentations, opening operation realize in Matlab softwares, such as Fig. 5
It is shown.Described image denoising carries out noise elimination to the gray level image；The gray level image equalizes to make gray level image
It is more clear；Described image filling is filled the inside blank parts of polymer phase；The Ostu Threshold segmentations are counting
Calculate segmentation threshold；Described image opening operation carries out opening operation to the image after segmentation and (first corrodes and expand afterwards, number can root
According to it needs to be determined that), you can obtain the bianry image.
In the present embodiment, in step S3, described image characteristic parameter extraction is realized in Image Pro Plus softwares.
In the present embodiment, described image characteristic parameter include shape area, equivalent polygon area, fractal dimension, etc.
Circular diameter, the Gao Yukuan of equivalent rectangular, circularity, polymer phase are imitated to the inertia of X-axis and Y-axis.
In the present embodiment, the evaluation index numerical computations include：
Polymer volume characteristic index DP, calculated using following formula：DP=A1/A0, wherein A1For shape area or equivalent polygon
Shape area, A0For zoning area；
Polymer form characteristic index R, i.e. circularity, are one of image features, and R uses software I mage Pro Plus
Included calculation calculates；
Polymer and pitch boundary characteristic index, i.e. fractal dimension, are one of image features, using Image Pro
Plus carries calculation and calculates；
Polymer dispersity characteristic index：It is calculated using following formula：Wherein, SiFor
The polymer area of each subregion；
Polymer homogeneity characteristic index I, is calculated using following formula：Ix/Iy, wherein IxWith IyRespectively polymer phase for
The inertia of X-axis and Y-axis.
Characteristic parameter is shown in Table 1 and is shown in Table 2 with evaluation index, is based on above-mentioned image features and evaluation index, can be evaluated
To the Phase velocity map feature of polymer, physical compatibility, polymer volume, the polymer dispersity of pitch and polymer are differentiated
Deng to judge the modified effect of polymer modified asphalt.
Table 1
Table 2
In the present embodiment, the gray level image denoising is several on macro property influence in polymer modified asphalt to remove
The molecule disregarded, and then reduce the influence to the characteristic parameter of polymer phase.Described image opening operation, to binary picture
It is expanded afterwards as first corroding, tiny object can be eliminated, the separating objects at very thin point, when boundary of smooth larger object is unknown
Its area of aobvious change.
The present embodiment can survey uniform film thickness temperature control pelletizer and method by a kind of polymer modified asphalt, to polymer
Modified pitch film-making realizes that even temperature control and film thickness can be surveyed simultaneously, and then reduces what print error observed fluorescence microscopy
It influences；And then image is obtained using fluorescence microscopy print, image is carried out according to Matlab image processing programs code
The extraction etc. of gray processing processing, Ostu methods Threshold segmentation and polymer phase parameter obtains binary image；And pass through Image Pro
Plus softwares carry out characteristic parameter acquisition to bianry image, are based on this, can differentiate pitch and the physical compatibility of polymer, polymerize
Object volume, polymer dispersity etc., to evaluate the modified effect of polymer modified asphalt.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification should all belong to the covering scope of the present invention.
Claims (7)
1. a kind of modified pitch effect evaluation method based on image processing techniques, it is characterised in that：Include the following steps：
Step S1：The good polymer modified asphalt print of observing effect is produced, is obtained under the observation of fluorescence microscope glimmering
Light microscope images；
Step S2：Bianry image acquisition is carried out to the fluorescence microscope images that step S1 is obtained：Fluorescence microscope images are carried out successively
Gray level image acquisition, gray level image denoising, gray level image equalization, image completion, Ostu Threshold segmentations, opening operation；
Step S3：Based on the bianry image that step S2 is obtained, image features extraction is carried out, and carry out evaluation index numerical value meter
It calculates, to judge the modified effect of polymer modified asphalt.
2. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：In step S1, the good polymer modified asphalt print can survey uniform film thickness control by a kind of polymer modified asphalt
Warm pelletizer is made；
It includes babinet and the ultrasound that is located in babinet that the polymer modified asphalt, which can survey uniform film thickness temperature control pelletizer,
Amount component, temperature control are evenly heated component, display module and adjusting control component；
The ultrasonic measurement component includes Probing pen 1 and ultrasonic meter；The Probing pen 1 is to tactile in high frequency electric pulse
It gives generation and receives ultrasonic wave, the ultrasonic meter is measuring polymer modified asphalt film-making film thickness, ultrasound
Amount instrument is connected with Probing pen 1 and display screen respectively；
The temperature control is evenly heated component and includes electromagnetic oven, the metallic plate that is located on electromagnetic oven, is located in metallic plate upper chambers
Conduction oil and ferroaluminium landing slab and temperature controller positioned at conduction oil top；The electromagnetic oven is for making metallic plate produce
Heat amount；The metallic plate is used to transmit heat to conduction oil, and the conduction oil is for transferring heat to ferroaluminium landing slab；
The ferroaluminium landing slab is for carrying glass slide and being evenly heated glass slide, and the temperature controller is by thermometer measure conduction oil
In temperature, the temperature controller is electrically connected with electromagnetic oven to control its operating temperature；
The display module includes indicator light and display screen；The indicator light, display screen are electrically connected with power on button；
The adjusting control component includes power on button and temperature setting button；It is the power on button and the temperature controller, described
Electromagnetic oven, the ultrasonic measurement component are connected；The temperature setting button is to control the temperature of the conduction oil, with control
Warm instrument is connected.
3. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：The amplification factor of the fluorescence microscope is × 40 to × 4000, and fluorescence microscope images storage format is BMP.
4. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：It is described that fluorescence microscope images are carried out with gray level image acquisition, gray level image denoising, gray level image equilibrium successively in step S2
Change, image completion, Ostu Threshold segmentations, opening operation are realized in Matlab softwares.
5. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：In step S3, described image characteristic parameter extraction is realized in Image Pro Plus softwares.
6. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：Described image characteristic parameter includes shape area, equivalent polygon area, fractal dimension, equivalent diameter, equivalent rectangular
Gao Yukuan, circularity, polymer phase are to the inertia of X-axis and Y-axis.
7. a kind of modified pitch effect evaluation method based on image processing techniques according to claim 1, feature exist
In：The evaluation index numerical computations include：
Polymer volume characteristic index DP, calculated using following formula：DP=A1/A0, wherein A1For shape area or equivalent polygon face
Product, A0For zoning area；
Polymer form characteristic index R, i.e. circularity, are one of image features, and R is included using software I mage Pro Plus
Calculation calculates；
Polymer and pitch boundary characteristic index, i.e. fractal dimension, are one of image features, using Image Pro Plus
Included calculation calculates；
Polymer dispersity characteristic index：It is calculated using following formula：Wherein, SiIt is each point
The polymer area in area；
Polymer homogeneity characteristic index I, is calculated using following formula：Ix/Iy, wherein IxWith IyRespectively polymer phase for X-axis with
The inertia of Y-axis.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763466A (en) * | 2020-12-24 | 2021-05-07 | 山东省交通科学研究院 | Method for identifying phase state distribution characteristics of polymer modified asphalt |
| CN114353706A (en) * | 2022-01-11 | 2022-04-15 | 哈尔滨工业大学 | Asphalt two-dimensional morphology determination method based on environmental scanning electron microscope |
| CN114460132A (en) * | 2022-02-22 | 2022-05-10 | 河北交投路桥建设开发有限公司 | Phase change and temperature adjustment evaluation system and method for asphalt mixture |
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| CN114460132B (en) * | 2022-02-22 | 2024-01-12 | 河北交投路桥建设开发有限公司 | Asphalt mixture phase-change temperature-adjustment evaluation system and method |
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