Table 5.

Recognition accuracy (%) comparison of different transformation methods on different networks.

Method	ResNet18	GoogleNet	AlexNet	UCNet6 (from Scratch)	UCNet6 (Pre-Trained)
Raw signal plot	93.82	94.55	94.15	93.08	94.24
Spectrogram	95.19	96.87	96.09	93.40	95.46
Recurrence plot	98.10	96.38	96.15	91.15	94.37
Multichannel	98.55	99.02	98.07	98.14	98.71
Iss2Image	99.70	99.46	98.97	98.16	99.27
Average	97.07	97.25	96.68	95.78	96.41