Automated Visual Inspection of Ship Hull Surfaces Using the Wavelet Transform

Table 1

Normalized entropies of four decomposition levels for textures of Figure 5.

Decomposition level, 𝑗		𝑆^𝑗𝑠	𝑆^𝑗ℎ	𝑆^𝑗𝑣	𝑆^𝑗𝑑
H225	𝑗=1	0.00011	0.00008	0.00007	0.00004
	𝑗=2	0.00048	0.00042	0.00042	0.00037
	𝑗=3	0.00200	0.00172	0.00168	0.00179
	𝑗=4	0.00796	0.00750	0.00681	0.00716
H34	𝑗=1	0.00011	0.00007	0.00008	0.00006
	𝑗=2	0.00046	0.00038	0.00039	0.00038
	𝑗=3	0.00185	0.00179	0.00169	0.00186
	𝑗=4	0.00732	0.00750	0.00662	0.00698
H241	𝑗=1	0.00011	0.00007	0.00007	0.00005
	𝑗=2	0.00046	0.00038	0.00037	0.00036
	𝑗=3	0.00194	0.00159	0.00151	0.00164
	𝑗=4	0.00763	0.00669	0.00640	0.00643
H137	𝑗=1	0.00011	0.00007	0.00006	0.00004
	𝑗=2	0.00047	0.00028	0.00027	0.00031
	𝑗=3	0.00191	0.00127	0.00132	0.00118
	𝑗=4	0.00726	0.00593	0.00581	0.00524
H10	𝑗=1	0.00013	0.00004	0.00004	0.00002
	𝑗=2	0.00057	0.00035	0.00037	0.00025
	𝑗=3	0.00214	0.00190	0.00182	0.00140
	𝑗=4	0.00841	0.00711	0.00737	0.00665