Rough Set Neural Network Feature Extraction and Pattern Recognition of Shaft Orbits Based on the Zernike Moment

Table 6

Average values of improved Hu moments.

Axis orbit
Ellipse	0.396	6.497	7.111	7.073	3.645	7.599
Banana	0.904	1.864	2.063	1.778	1.105	2.066
Inner 8	0.919	1.199	1.009	0.852	0.330	1.325
Outer “8”	0.422	1.382	5.756	5.154	2.974	4.817
Petal	0.540	1.117	2.026	1.480	1.338	1.567