Virtual Sectioning and Haptic Exploration of Volumetric Shapes in the Absence of Visual Feedback

Table 3

Confusion matrix of recognition and identification (%) of virtual shapes in the parallel scanning mode at the playback velocity of the virtual trajectory of 42 mm/s, averaged over all participants.

Test objects	Cylinder	2 Cylinders	Trapez. prism	2 Trap. prisms	2 Balls	A ball	2 Hemisph.	Half ball	Torus	Ripples
Cylinder	99.33		0.67
2 Cylinders		97.99		1.34					0.67
Trapez. prism		0.67	97.99			1.34
2 Trap. prisms				99.33	0.67
2 Balls					98.66				1.34
A ball			0.67			95.31		4.02
2 Hemispheres		0.67					99.33
A half ball	0.67					1.34		97.99
Torus	0.67				0.67				98.66
Ripples										100