Table 1.
Feature vector composition.
| Shape Features | Invariant Moments | Statistical Features |
|---|---|---|
| f1, f2, f3: Areas of XY, XZ, YZ projections | f22, f23, f24: Hu moment 1 over XY, XZ, YZ projections | f43, f44: Means of distances and reflexivity |
| f4, f5, f6: Perimeters of XY, XZ, YZ projections | f25, f26, f27: Hu moment 2 over XY, XZ, YZ projections | f45, f46: Standard deviations of distances and reflexivity |
| f7, f8, f9: Solidity of XY, XZ, YZ projections | f28, f29, f30: Hu moment 3 over XY, XZ, YZ projections | f47, f48: Kurtosis of distances and reflexivity |
| f10, f11, f12: Equivalent diameters of XY, XZ, YZ projections | f31, f32, f33: Hu moment 4 over XY, XZ, YZ projections | f49, f50: Skewness of distances and reflexivity |
| f13, f14, f15: Eccentricity of XY, XZ, YZ projections | f34, f35, f36: Hu moment 5 over XY, XZ, YZ projections | |
| f16, f17, f18: Length major axis of XY, XZ, YZ projections | f37, f38, f39: Hu moment 6 over XY, XZ, YZ projections | |
| f19, f20, f21: Length minor axis of XY, XZ, YZ projections | f40, f41, f42: Hu moment 7 over XY, XZ, YZ projections |