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

Table 5

Average values of Hu moments.

Axis orbit
Ellipse	0.211	0.386	3.211	3.518	6.998	3.595	7.523
Banana	0.137	0.655	0.339	1.976	3.150	2.363	3.455
Inner 8	0.162	0.595	1.026	0.710	1.758	1.188	2.105
Outer “8”	0.262	0.137	0.515	2.727	4.852	2.772	4.514
Petal	0.115	0.310	0.219	1.478	2.409	1.958	2.497