A Morphological Filtering Method Based on Particle Swarm Optimization for Railway Vehicle Bearing Fault Diagnosis

Table 3

The construction of triangle SEs.

Scale	Length	Matrix form
1	3	h1{0, 1, 0}
2	5	h2{0, 1, 2, 1, 0}
3	7	h3{0, 1, 2, 3, 2, 1, 0}
n	2n + 1	hn{0, 1, …, n, …, 1, 0}