Microstructure vision-based porosity analysis

Notebooks:

porosity_analysis_aluminum.ipynb

Large scale image (Aluminum, 300 microns)

Input data:

Grayscale threshold = 60
Minimum pore area = 50 px2
Maximum pore area = 50000 px2
Critical eccentricity = 0.6

Output data:

Image area = 2595840 px2
Pore area = 36730 px2
Pore fraction = 1.41%
Total number of pores = 630
- Number of circular pores = 45
- Number of elliptical pores = 142
- Number of ignored pores = 443
- Total area of circular pores = 36730 px2
- Total perimeter of circular pores = 2693 px
- Median equivalent diameter of circular pores = 30 px
- Mean eccentricity of circular pores = 0.48

Small scale image (Aluminum, 30 microns)

Input data:

Grayscale thresholds = [0…44; 45…84; 85…255]

Output data:

Source image area = 3145728 px2
Total 'dark' area = 45145.0 px2 (1.44%)
Total 'mid' area = 919080.0 px2 (29.22%)
Total 'light' area = 1899140.0 px2 (60.37%)