measuring normalized areal density of volume fraction through image processing in imagej
Post on 15-Jan-2017
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Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
1
Advanced Materials Processing & Testing Lab
Trevor Aguirre
Areal density – Adjust contrast & brightnessOriginal image Contrast & Brightness adjusted
Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
2
Advanced Materials Processing & Testing Lab
Trevor Aguirre
Areal density – Binary operationsThreshold adjusted
Adjusts pixels to have values within threshold
Unconnected pixels “opened”Removes isolated pixels
Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
3
Advanced Materials Processing & Testing Lab
Trevor Aguirre
Areal density – Binary operation & AnalyzeHoles filled in Analyzed particles
Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
4
Advanced Materials Processing & Testing Lab
Trevor Aguirre
Areal density – Overlay and comparisonOverlay on original image Original image
98.54% density
Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
5
Advanced Materials Processing & Testing Lab
Trevor Aguirre
Areal density results
Sample Name Average Density from ImageJ
Standard Deviation of Density from
ImageJArchimedes Density
HA BNNT 015 98.48% 0.67% 92.72%HA BNNT 017 98.42% 0.90% 91.85%HA BNNT 021 95.96% 1.45% 93.78%
Advanced Materials Processing & Testing Lab
Colorado State UniversityMechanical Engineering
6
Advanced Materials Processing & Testing Lab
Trevor Aguirre
1. Analyze Set scale1. Set Global scale for images captured at the same conditions
2. Image Duplicate1. Work with duplicated image to compare to original while working
3. Image Adjust Contrast/Brightness4. Image Adjust Threshold5. Process Binary Make Binary6. Process Binary Open7. Process Binary Fill Holes8. Analyze Set Measurements
1. Choose what calculations you want ImageJ to perform9. Analyze Analyze Particles
1. Display results2. Clear (previous) results3. Show: Outlines
Image J user guide
Areal density process
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