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. Author manuscript; available in PMC: 2020 May 20.
Published in final edited form as: IEEE Trans Haptics. 2020 Jan 16;13(1):152–158. doi: 10.1109/TOH.2020.2967366

Fig. 8.

Fig. 8.

Confusion matrix (A) quantifying the perceived surface topology with the ground truth. The average accuracy and standard error across the subjects (B) are reported with a single asterisk indicating significance of p<0.001. ‘LL’ corresponds to a surface with a low ridge height and spacing, ‘LH’ a surface with a low ridge height and high ridge spacing, ‘HL’ a surface with a high ridge height and low ridge spacing, and ‘HH’ a surface with a high ridge height and spacing. ** indicates significant difference of p<0.05.