Table 9.

Hypothesis test results for CNN-I model.

Preprocessing	$\overline{{\mathit{x}}_1}$	${\mathit{\sigma }}_1$	$\overline{{\mathit{x}}_2}$	${\mathit{\sigma }}_2$	Z-Score
Fuzzy Sobel vs. RGB	0.6708	0.0186	0.6687	0.0141	1.4347
Fuzzy Prewitt vs. RGB	0.6775	0.0151	0.6687	0.0141	2.3336
Fuzzy MG vs. RGB	0.6751	0.0196	0.6687	0.0141	0.4892
Fuzzy Sobel vs. grayscale	0.6708	0.0186	0.6601	0.0199	2.9244
Fuzzy Prewitt vs. grayscale	0.6775	0.0151	0.6601	0.0199	3.8144
Fuzzy MG vs. grayscale	0.6751	0.0196	0.6601	0.0199	2.1474