Table 3.

AREs for three clinical metrics of three types of tactile sensors after eight denoising methods.

		Butterworth [19]	Wavelet [20]	EMD [22]	VMD [24]	MA [26]	RPCA [27]	WRPCA [28]	cc-DWRPCA [13]	ANOVAa
3 × 4	pAIx	0.095 ± 0.039	0.210 ± 0.067	0.152 ± 0.061	0.096 ± 0.038	0.138 ± 0.058	0.083 ± 0.032	0.084 ± 0.031	0.083 ± 0.031	p < 0.05
	h3/h1	0.197 ± 0.094	0.419 ± 0.108	0.284 ± 0.106	0.187 ± 0.093	0.230 ± 0.096	0.178 ± 0.098	0.178 ± 0.095	0.177 ± 0.093	p < 0.05
	h4/h1	0.116 ± 0.043	0.167 ± 0.062	0.169 ± 0.056	0.115 ± 0.043	0.122 ± 0.049	0.093 ± 0.038	0.093 ± 0.038	0.093 ± 0.038	p < 0.05
4 × 6	PAIx	0.225 ± 0.084	0.341 ± 0.115	0.262 ± 0.074	0.224 ± 0.084	0.280 ± 0.102	0.199 ± 0.069	0.197 ± 0.068	0.199 ± 0.069	p < 0.05
	h3/h1	0.496 ± 0.158	0.762 ± 0.189	0.554 ± 0.139	0.477 ± 0.158	0.541 ± 0.160	0.451 ± 0.158	0.448 ± 0.157	0.448 ± 0.157	p < 0.05
	h4/h1	0.324 ± 0.169	0.366 ± 0.175	0.374 ± 0.160	0.319 ± 0.165	0.331 ± 0.164	0.254 ± 0.101	0.248 ± 0.104	0.247 ± 0.105	p < 0.05
5 × 5−1	pAIx	0.045 ± 0.019	0.181 ± 0.069	0.292 ± 0.163	0.062 ± 0.037	0.089 ± 0.035	0.057 ± 0.018	0.056 ± 0.016	0.057 ± 0.019	p < 0.05
	h3/h1	0.089 ± 0.039	0.341 ± 0.072	0.476 ± 0.258	0.131 ± 0.119	0.120 ± 0.048	0.084 ± 0.045	0.084 ± 0.043	0.083 ± 0.042	p < 0.05
	h4/h1	0.064 ± 0.027	0.138 ± 0.045	0.242 ± 0.086	0.101 ± 0.096	0.071 ± 0.027	0.046 ± 0.019	0.045 ± 0.018	0.045 ± 0.017	p < 0.05

^aThe one-way ANOVA results indicate the significant difference among AREs of the eight algorithms.