Table 4.
Exportable features
| Name of feature | Description |
|---|---|
| Source Image |
Path to raw image data file |
| Area |
Object area |
| Perimeter |
Object perimeter |
| Width |
Object width (along major axis) |
| Height |
Object height (perpendicular to major axis) |
| Rotation Angle |
Rotation angle of the major axis |
| Segmentation Method |
Segmentation method used to derive the object shape |
| Optimization Method |
Optimization method applied to the object shape |
| Best Template (EFDIs) |
Path to the best matching template (according to matching of elliptic Fourier descriptor invariants) |
| Template Difference (EFDIs) |
Value for matching of elliptic Fourier descriptor invariants between object and best matching template |
| Hu-match for best EFDIs-Template |
Value of matching of Hu invariants between object shape and best matching template |
| Standard Deviation |
Standard deviation of texture gray levels within the inner 50% of the object boundaries |
| Width/Height-Ratio |
Aspect ratio of the object shape |
| Smoothed Perimeter Ratio |
Ratio between the perimeters of the smoothed and the original contour; smoothing is performed by Gaussian filtering of the contour coordinates. |
| Quality Index |
Number of fulfilled quality indicators |
| Template is convex |
Indicator showing if the best matching template is convex |
| Convexity is used |
Indicator showing if convexity was judged directly to calculate convexity indicators (use of absolute convexity measures) |
| Rectangularity |
Heuristic descriptor |
| Compactness |
Heuristic descriptor |
| Ellipticity |
Heuristic descriptor |
| Triangularity |
Heuristic descriptor |
| Roundness |
Heuristic descriptor |
| Convexity by perimeter |
Heuristic descriptor |
| Convexity by area |
Heuristic descriptor |
| Formfactor |
Heuristic descriptor |
| CDF |
Convexity defect measure |
| PCAF |
Convexity defect measure |
| CHMDF |
Convexity defect measure |
| CDF-Match |
Ratio of CDF between object and template |
| PCAF-Match |
Ratio of PCAF between object and template |
| Compactness-Match |
Ratio of heuristic descriptor "formfactor" between object and template |
| Convexity Defect Index |
Number of fulfilled absolute or relative convexity indicators |
| Ranking Index |
Ranking for object shape, i.e. estimation of quality and relevance of result |
| Contour Image |
Name of the file containing the image data cropped to the object area |
| Contour Image top left Corner |
Coordinates of the top left corner of the cropped object image with respect to the raw data |
| Image Moments (mu) |
Image moments of the object shape |
| Hu Invariants (Hu) | Hu-Invariants of the object shape |